Ozone Depletion
•Download as PPT, PDF•
2 likes•258 views
Ozone, a gas found in the stratosphere, protects life on Earth from UV radiation. Ozone depletion occurs when ozone is lessened, reducing its ability to absorb 97-99% of harmful UV rays from the sun. Depletion is caused by chemicals like CFCs and threatens human health, marine life, and animals. Solutions include reducing pesticide and private vehicle use and choosing eco-friendly cleaning products to help repair the ozone layer.
Report
Share
Report
Share
Recommended
Ozone depletion
The document summarizes the ozone layer, how it is formed through the Chapman Cycle of chemical reactions involving oxygen and ozone, and maintained by a balance of these reactions. It also discusses how ozone protects life by absorbing harmful UV rays and the health and environmental effects of ozone depletion caused by substances like CFCs. The Montreal Protocol was created to help address ozone depletion by reducing CFC production.
Ozone Depletion
The document discusses ozone depletion, its causes, effects, and potential solutions. It defines the ozone layer and depletion, noting a large hole observed over the poles. The worst affected region is Antarctica, where ozone levels have dropped over 50% since 1975. Main causes of depletion include chlorofluorocarbons (CFCs), sulfur, and stratospheric clouds containing chlorine and bromine. Depletion leads to increased UV rays and consequences like higher skin cancer rates, reduced crop yields, and damage to planktons and eyes. Suggested solutions include phasing out pollutants, international cooperation, and destroying CFCs.
Ozone depletion
This document summarizes a seminar on ozone depletion presented by Ravi Singh Jadaun on March 23, 2017 at Jiwanji University in Gwalior, India. It defines the ozone layer, discusses its structure and history. It then explains the causes of ozone depletion, both natural and man-made, focusing on ozone depleting substances like CFCs. The effects of depletion on human health, the environment, marine life and animals are outlined. Finally, solutions to reduce depletion like banning pesticides and using public transportation are proposed.
Ozone layer
The ozone layer is a planetary sunscreen located 15-48 kilometers above the Earth's surface that protects life from UV radiation. It is composed of ozone (O3), which is formed when oxygen (O2) absorbs ultraviolet light and splits into single oxygen atoms. Depletion of the ozone layer allows more UV to reach the lower atmosphere and surface, increasing risks of skin cancer, cataracts, and harming plants, plankton, fish and other organisms. Solutions include limiting sun exposure, applying sunscreen, phasing out ozone-depleting chemicals via the Montreal Protocol, and reducing air pollution.
ozone layer depletion
The document summarizes information about the ozone layer, including:
1. The ozone layer is found in the stratosphere and protects life on Earth by absorbing harmful UV radiation.
2. Ozone in the stratosphere ("good ozone") is important, while ground-level tropospheric ozone ("bad ozone") can harm health.
3. Ozone depletion is caused by ozone-depleting substances like CFCs released from products, and one chlorine atom can destroy 100,000 ozone molecules. Depletion is most severe over Antarctica.
Ozone depletion
Ozone exists naturally in two forms - good ozone in the stratosphere and bad ozone in the troposphere. The ozone layer is a region of the stratosphere that contains naturally occurring ozone. Ozone depletion refers to the reduction of ozone in the stratosphere caused by human emissions of chlorofluorocarbons and other ozone-depleting substances. Effects of ozone depletion include increased UV radiation at the Earth's surface, which can harm humans, plants and animals. While volcanoes also release ozone-depleting substances, human activities are the primary contributor. The only way to stop ozone depletion is to reduce emissions of chlorofluorocarbons and other chemicals that destroy stratospheric o
Ozone depletion
Ozone exists naturally in two layers of the atmosphere. Ground-level ozone is a pollutant but the ozone layer in the stratosphere protects the Earth from harmful UV rays. The ozone layer was depleted by CFCs but this was addressed by the Montreal Protocol which phased out CFC production, allowing the ozone layer to recover over time. Continued monitoring is needed to understand impacts of ozone depletion and climate change.
Ozone layer
The document discusses the distribution and depletion of the ozone layer. It notes that the thickness of the ozone layer varies globally depending on latitude, seasons, and solar intensity. Depletion of the ozone layer by human actions like CFC emissions could have catastrophic effects by allowing more harmful UV radiation to reach the Earth. This would increase health issues like eye cataracts, skin cancer, and immune system suppression in humans. The formation of an ozone hole over Antarctica is a result of CFC release and has been proven to be caused by human activity.
Recommended
Ozone depletion
The document summarizes the ozone layer, how it is formed through the Chapman Cycle of chemical reactions involving oxygen and ozone, and maintained by a balance of these reactions. It also discusses how ozone protects life by absorbing harmful UV rays and the health and environmental effects of ozone depletion caused by substances like CFCs. The Montreal Protocol was created to help address ozone depletion by reducing CFC production.
Ozone Depletion
The document discusses ozone depletion, its causes, effects, and potential solutions. It defines the ozone layer and depletion, noting a large hole observed over the poles. The worst affected region is Antarctica, where ozone levels have dropped over 50% since 1975. Main causes of depletion include chlorofluorocarbons (CFCs), sulfur, and stratospheric clouds containing chlorine and bromine. Depletion leads to increased UV rays and consequences like higher skin cancer rates, reduced crop yields, and damage to planktons and eyes. Suggested solutions include phasing out pollutants, international cooperation, and destroying CFCs.
Ozone depletion
This document summarizes a seminar on ozone depletion presented by Ravi Singh Jadaun on March 23, 2017 at Jiwanji University in Gwalior, India. It defines the ozone layer, discusses its structure and history. It then explains the causes of ozone depletion, both natural and man-made, focusing on ozone depleting substances like CFCs. The effects of depletion on human health, the environment, marine life and animals are outlined. Finally, solutions to reduce depletion like banning pesticides and using public transportation are proposed.
Ozone layer
The ozone layer is a planetary sunscreen located 15-48 kilometers above the Earth's surface that protects life from UV radiation. It is composed of ozone (O3), which is formed when oxygen (O2) absorbs ultraviolet light and splits into single oxygen atoms. Depletion of the ozone layer allows more UV to reach the lower atmosphere and surface, increasing risks of skin cancer, cataracts, and harming plants, plankton, fish and other organisms. Solutions include limiting sun exposure, applying sunscreen, phasing out ozone-depleting chemicals via the Montreal Protocol, and reducing air pollution.
ozone layer depletion
The document summarizes information about the ozone layer, including:
1. The ozone layer is found in the stratosphere and protects life on Earth by absorbing harmful UV radiation.
2. Ozone in the stratosphere ("good ozone") is important, while ground-level tropospheric ozone ("bad ozone") can harm health.
3. Ozone depletion is caused by ozone-depleting substances like CFCs released from products, and one chlorine atom can destroy 100,000 ozone molecules. Depletion is most severe over Antarctica.
Ozone depletion
Ozone exists naturally in two forms - good ozone in the stratosphere and bad ozone in the troposphere. The ozone layer is a region of the stratosphere that contains naturally occurring ozone. Ozone depletion refers to the reduction of ozone in the stratosphere caused by human emissions of chlorofluorocarbons and other ozone-depleting substances. Effects of ozone depletion include increased UV radiation at the Earth's surface, which can harm humans, plants and animals. While volcanoes also release ozone-depleting substances, human activities are the primary contributor. The only way to stop ozone depletion is to reduce emissions of chlorofluorocarbons and other chemicals that destroy stratospheric o
Ozone depletion
Ozone exists naturally in two layers of the atmosphere. Ground-level ozone is a pollutant but the ozone layer in the stratosphere protects the Earth from harmful UV rays. The ozone layer was depleted by CFCs but this was addressed by the Montreal Protocol which phased out CFC production, allowing the ozone layer to recover over time. Continued monitoring is needed to understand impacts of ozone depletion and climate change.
Ozone layer
The document discusses the distribution and depletion of the ozone layer. It notes that the thickness of the ozone layer varies globally depending on latitude, seasons, and solar intensity. Depletion of the ozone layer by human actions like CFC emissions could have catastrophic effects by allowing more harmful UV radiation to reach the Earth. This would increase health issues like eye cataracts, skin cancer, and immune system suppression in humans. The formation of an ozone hole over Antarctica is a result of CFC release and has been proven to be caused by human activity.
Ozone deplection
The document discusses ozone depletion and the ozone layer. It explains that ozone in the stratosphere protects life on Earth by filtering out UV radiation from the sun. In the 1980s, evidence emerged of an ozone hole developing over Antarctica each spring. The cause was determined to be man-made chlorofluorocarbons (CFCs) which are transported into the stratosphere by winds and break down ozone molecules. While CFC production has been restricted, full recovery of the ozone layer may not occur until 2050 due to CFCs' long lifetime in the atmosphere. Ozone depletion can negatively impact human health and ecosystems if it results in increased UV radiation reaching the Earth's surface.
Ozone depletion presentation Mr.P.R.Tambe
The document summarizes information about the ozone layer, including:
1) The ozone layer is a layer in the stratosphere that protects the Earth from harmful UV radiation. It is formed when oxygen molecules interact with solar radiation.
2) Chlorofluorocarbons (CFCs) released from products like aerosol sprays are the primary cause of ozone layer depletion, as chlorine atoms from CFCs destroy ozone molecules.
3) Depletion of the ozone layer leads to increased UV radiation reaching the Earth's surface, which can cause skin cancer, eye damage, and harm plants and plankton. International agreements have led to a ban on CFCs to allow
The ozone layer
The document discusses the ozone layer, which protects the Earth from UV radiation. It absorbs 97-99% of harmful UV light from the sun. The largest recorded Antarctic ozone hole was as big as North America. Chlorine gases primarily cause ozone depletion there. Without protection, skin cancer and infectious diseases would increase and plankton may not survive, harming ecosystems. Actions to protect the ozone layer include phasing out ozone-depleting substances and banning their unnecessary release. The ozone layer is expected to return to pre-1980 levels by 2070.
Ozone layer depletion
The ozone layer sits 9.3 to 18.6 miles above Earth and shields it from harmful UV radiation. It is formed from ozone, a molecule containing three oxygen atoms that absorbs most UV rays. The ozone layer has been depleted since the 1960s due to gases like CFCs released from aerosols and refrigerants, leading to holes forming. This depletion allows more UV radiation to reach Earth and increases health risks like skin cancer for humans, infections for animals, and decreased crop yields. The 1987 Montreal Protocol aimed to phase out ozone-depleting substances by 2010.
Ozone layer
The ozone layer is a layer of concentrated ozone gas in the lower stratosphere that protects the Earth from harmful ultraviolet radiation from the sun. It is formed through a natural process called the Chapman cycle where oxygen is converted to ozone via photolysis. However, man-made chlorofluorocarbons have been depleting the ozone layer since the 1970s. Ozone depletion occurs when CFCs release chlorine atoms that catalytically destroy ozone. This has led to health and environmental effects from increased UV exposure such as skin cancer. International agreements have sought to regulate ozone depleting substances to allow the ozone layer to recover.
Ozone layer depletion
The ozone layer is situated 20-30 km above the Earth's surface and contains 90% of the atmospheric ozone. It is formed through photochemical reactions involving oxygen, molecular oxygen, UV radiation, and ozone. Chlorofluorocarbons and other ozone depleting chemicals released these reactions and led to thinning of the ozone layer, most pronounced in the lower stratosphere. Depletion of the ozone layer has negative effects on human health through increased UV exposure and impacts ecosystems and climate through changes in temperatures and CO2 absorption. The Montreal Protocol was enacted in 1987 to phase out ozone depleting substances and has been successful in stabilizing and beginning to repair the ozone layer.
Ozone Layer depletion C.U.EBONG
The document discusses the stratospheric ozone layer, the causes and impacts of its depletion, and efforts to address the problem. It notes that the ozone layer protects the Earth from UV radiation but has been thinning due to ozone-depleting substances like CFCs. Increased UV exposure can harm humans, agriculture, and ecosystems. The Montreal Protocol banned production of major ozone-depleting chemicals and governments are regulating their use, but continued actions are needed to prevent further ozone layer depletion.
ozone Layer
1. The document discusses ozone depletion, specifically the formation of an ozone hole over Antarctica each spring.
2. CFCs released chemicals like chlorine that act as catalysts to destroy ozone through chemical reactions, disrupting the natural ozone layer balance.
3. Special conditions in Antarctica, like polar stratospheric ice clouds and its winter circulation pattern, make ozone depletion most severe there through faster chemical reactions that destroy ozone.
What Is Ozone Layer Destruction
The ozone layer, situated 15-30 km above the Earth's surface, protects life by absorbing harmful UV radiation from the sun. CFCs released into the atmosphere are destroying the ozone layer, with depletion rates highest in polar regions. This destruction increases harmful UV rays, risking skin cancer, eye cataracts, and damage to plants and small organisms. CFCs were widely used but are being phased out and banned due to their ozone-destroying effects.
Destruction Of The Ozone Layer
The ozone layer protects life on Earth by absorbing most of the sun's harmful ultraviolet rays. However, chlorofluorocarbons (CFCs) used in refrigerants, aerosols, and other products are destroying the ozone layer by releasing chlorine atoms that break down ozone molecules. This depletion causes increased skin cancer, cataracts, damage to crops and plankton, and impacts the Earth's climate. While reducing CFC use helps, fully phasing out these chemicals is needed to allow the ozone layer to recover over time.
Ozone layer
The document discusses the ozone layer, how it forms, and its importance in protecting the Earth. It notes that the ozone layer is a concentration of ozone gas in the upper atmosphere between 20-50km high. Ultraviolet rays from the sun split oxygen molecules, which then combine with other oxygen to form ozone. Certain gases from refrigerants and aerosols can rise and deplete the ozone layer, forming holes that allow more UV rays to reach the surface. Without the ozone layer, there would be increased skin cancer, climate change, damage to food chains and crops from UV rays.
Ozone Layer by Girishwar
This is PPT was presented by Mr. Girishwar of 9th std, JNV Lepakshi, to the INOVIT-2015 organised by Vellore Institute of Technology, Vellore, Tamilnadu on 24-25th Jan 2015.
ozone depletion
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
• Introduction
Ozone
Ozone layer
• Ozone–oxygen cycle
Chapman cycle
• Ozone Depletion
• Ozone Hole
• Effect Of Ozone Depletion
• Solution
• World Ozone Day
Ozone
The document discusses the ozone layer, its importance in shielding the Earth from UV radiation, and the threats to it. It notes that ozone is found mainly in the stratosphere, where it forms the ozone layer between 6-30 miles above the surface. The ozone layer absorbs most of the sun's UV rays and plays a key role in atmospheric temperature. However, chlorofluorocarbons and other ozone-depleting substances have damaged the ozone layer, leading to the Antarctic ozone hole. This depletion increases UV levels and can harm both human health and the environment. International agreements like the Montreal Protocol have sought to phase out ozone-harming chemicals and find alternatives.
Ozone Depletion
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
Ozone layer, Ozone–oxygen cycle, ozone depletion,Ozone Depleting Substances, Ozone Depletion Process,Ozone Hole, Effect Of Ozone Depletion,solution
Ozone depletion
The ozone layer is a layer in the stratosphere between 20-30 km above the Earth's surface that contains 90% of the atmosphere's ozone. Ozone is formed through the Chapman cycle where oxygen is converted to ozone via ultraviolet radiation. Ozone depletion occurs when gases like CFCs and halons react with ozone due to UV radiation, forming chlorine atoms that can destroy 100,000 ozone molecules each. This causes thinning of the ozone layer, known as the ozone hole over Antarctica. Ozone depletion leads to increased UV radiation reaching the Earth, harming humans, animals, plants and contributing to global warming. International agreements like the Montreal Protocol aim to phase out ozone depleting
The Ozone Layer and Its Depletion
The document discusses the ozone layer in the Earth's stratosphere that protects the planet from harmful UV radiation. It is formed through a reaction involving oxygen and ultraviolet light. While ozone itself is poisonous at ground level, the ozone layer is beneficial as it prevents excessive UV radiation from reaching the surface and causing issues like skin cancer. However, the ozone layer is under threat due to ozone depleting substances released into the atmosphere such as CFCs, halons, HCFCs, and methyl chloroform which are used in products like refrigerants and aerosol sprays.
Ozone depletion and prevention (p.a.c 2015)
The document discusses the ozone layer, how it is formed through the Chapman cycle, and how it is depleted. The ozone layer is a layer in the stratosphere that contains 90% of atmospheric ozone and protects the Earth from harmful UV rays. It is formed through a process called the Chapman cycle where oxygen is converted to ozone. Ozone depletion occurs when gases like CFCs and halons react with ozone due to UV light, destroying the ozone molecules. This depletion leads to the formation of the ozone hole over Antarctica and increased UV radiation reaching the Earth's surface, harming human health, aquatic life, and contributing to global warming.
The ozone layer
The ozone layer is a gas layer located in the stratosphere that protects life on Earth from UV radiation. CFCs released into the atmosphere were depleting the ozone layer by destroying ozone molecules. This was causing the ozone hole over Antarctica to grow and allowing more UV radiation to reach the Earth's surface, threatening life. In response, the international community adopted the Montreal Protocol to phase out CFC production, which has successfully led to the recovery of the ozone layer by 2050-2075 while also helping reduce greenhouse gases.
Ozone depletion
The document discusses ozone depletion in the stratosphere. It notes that a thin layer of ozone in the stratosphere protects the Earth from harmful UV radiation. The concentration of ozone is highest at mid-latitudes in the stratosphere. The document then explains that chlorofluorocarbons (CFCs) released into the atmosphere can travel to the stratosphere and destroy ozone molecules. It highlights that annual ozone depletion over Antarctica reaches up to 70% due to chemical reactions on polar stratospheric clouds that release chlorine. The 1991 eruption of Mount Pinatubo increased mid-latitude ozone depletion by injecting sulfur into the stratosphere. International agreements aim to phase out CFC production but developing nations
ozone layer depletion.pptx
The document discusses the ozone layer, its importance in protecting Earth from UV radiation, and the causes and impacts of ozone layer depletion. The ozone layer absorbs UV radiation in the stratosphere and protects living organisms. Ozone depletion is caused by ozone depleting substances (ODS) released by human activities like CFCs from refrigerants. This thins the ozone layer and allows more UV radiation to reach the Earth's surface, harming humans, animals and plants through increased skin cancer and other health issues. Preventive measures include replacing CFCs and reducing vehicle use and emissions.
Ozone Layer Depletion
This document discusses ozone layer depletion. It defines ozone and distinguishes between good and bad ozone. The ozone layer in the stratosphere protects the Earth from UV radiation. Certain chemicals like CFCs used in manufacturing and products deplete the ozone layer when they reach the stratosphere. Volcanic ash also contributes to ozone depletion. Increased UV radiation due to depletion causes health effects in humans like skin cancer and environmental effects like climate change and reduced plankton. The largest ozone hole forms over Antarctica each year. Prevention efforts include using eco-friendly products and reducing emissions.
More Related Content
What's hot
Ozone deplection
The document discusses ozone depletion and the ozone layer. It explains that ozone in the stratosphere protects life on Earth by filtering out UV radiation from the sun. In the 1980s, evidence emerged of an ozone hole developing over Antarctica each spring. The cause was determined to be man-made chlorofluorocarbons (CFCs) which are transported into the stratosphere by winds and break down ozone molecules. While CFC production has been restricted, full recovery of the ozone layer may not occur until 2050 due to CFCs' long lifetime in the atmosphere. Ozone depletion can negatively impact human health and ecosystems if it results in increased UV radiation reaching the Earth's surface.
Ozone depletion presentation Mr.P.R.Tambe
The document summarizes information about the ozone layer, including:
1) The ozone layer is a layer in the stratosphere that protects the Earth from harmful UV radiation. It is formed when oxygen molecules interact with solar radiation.
2) Chlorofluorocarbons (CFCs) released from products like aerosol sprays are the primary cause of ozone layer depletion, as chlorine atoms from CFCs destroy ozone molecules.
3) Depletion of the ozone layer leads to increased UV radiation reaching the Earth's surface, which can cause skin cancer, eye damage, and harm plants and plankton. International agreements have led to a ban on CFCs to allow
The ozone layer
The document discusses the ozone layer, which protects the Earth from UV radiation. It absorbs 97-99% of harmful UV light from the sun. The largest recorded Antarctic ozone hole was as big as North America. Chlorine gases primarily cause ozone depletion there. Without protection, skin cancer and infectious diseases would increase and plankton may not survive, harming ecosystems. Actions to protect the ozone layer include phasing out ozone-depleting substances and banning their unnecessary release. The ozone layer is expected to return to pre-1980 levels by 2070.
Ozone layer depletion
The ozone layer sits 9.3 to 18.6 miles above Earth and shields it from harmful UV radiation. It is formed from ozone, a molecule containing three oxygen atoms that absorbs most UV rays. The ozone layer has been depleted since the 1960s due to gases like CFCs released from aerosols and refrigerants, leading to holes forming. This depletion allows more UV radiation to reach Earth and increases health risks like skin cancer for humans, infections for animals, and decreased crop yields. The 1987 Montreal Protocol aimed to phase out ozone-depleting substances by 2010.
Ozone layer
The ozone layer is a layer of concentrated ozone gas in the lower stratosphere that protects the Earth from harmful ultraviolet radiation from the sun. It is formed through a natural process called the Chapman cycle where oxygen is converted to ozone via photolysis. However, man-made chlorofluorocarbons have been depleting the ozone layer since the 1970s. Ozone depletion occurs when CFCs release chlorine atoms that catalytically destroy ozone. This has led to health and environmental effects from increased UV exposure such as skin cancer. International agreements have sought to regulate ozone depleting substances to allow the ozone layer to recover.
Ozone layer depletion
The ozone layer is situated 20-30 km above the Earth's surface and contains 90% of the atmospheric ozone. It is formed through photochemical reactions involving oxygen, molecular oxygen, UV radiation, and ozone. Chlorofluorocarbons and other ozone depleting chemicals released these reactions and led to thinning of the ozone layer, most pronounced in the lower stratosphere. Depletion of the ozone layer has negative effects on human health through increased UV exposure and impacts ecosystems and climate through changes in temperatures and CO2 absorption. The Montreal Protocol was enacted in 1987 to phase out ozone depleting substances and has been successful in stabilizing and beginning to repair the ozone layer.
Ozone Layer depletion C.U.EBONG
The document discusses the stratospheric ozone layer, the causes and impacts of its depletion, and efforts to address the problem. It notes that the ozone layer protects the Earth from UV radiation but has been thinning due to ozone-depleting substances like CFCs. Increased UV exposure can harm humans, agriculture, and ecosystems. The Montreal Protocol banned production of major ozone-depleting chemicals and governments are regulating their use, but continued actions are needed to prevent further ozone layer depletion.
ozone Layer
1. The document discusses ozone depletion, specifically the formation of an ozone hole over Antarctica each spring.
2. CFCs released chemicals like chlorine that act as catalysts to destroy ozone through chemical reactions, disrupting the natural ozone layer balance.
3. Special conditions in Antarctica, like polar stratospheric ice clouds and its winter circulation pattern, make ozone depletion most severe there through faster chemical reactions that destroy ozone.
What Is Ozone Layer Destruction
The ozone layer, situated 15-30 km above the Earth's surface, protects life by absorbing harmful UV radiation from the sun. CFCs released into the atmosphere are destroying the ozone layer, with depletion rates highest in polar regions. This destruction increases harmful UV rays, risking skin cancer, eye cataracts, and damage to plants and small organisms. CFCs were widely used but are being phased out and banned due to their ozone-destroying effects.
Destruction Of The Ozone Layer
The ozone layer protects life on Earth by absorbing most of the sun's harmful ultraviolet rays. However, chlorofluorocarbons (CFCs) used in refrigerants, aerosols, and other products are destroying the ozone layer by releasing chlorine atoms that break down ozone molecules. This depletion causes increased skin cancer, cataracts, damage to crops and plankton, and impacts the Earth's climate. While reducing CFC use helps, fully phasing out these chemicals is needed to allow the ozone layer to recover over time.
Ozone layer
The document discusses the ozone layer, how it forms, and its importance in protecting the Earth. It notes that the ozone layer is a concentration of ozone gas in the upper atmosphere between 20-50km high. Ultraviolet rays from the sun split oxygen molecules, which then combine with other oxygen to form ozone. Certain gases from refrigerants and aerosols can rise and deplete the ozone layer, forming holes that allow more UV rays to reach the surface. Without the ozone layer, there would be increased skin cancer, climate change, damage to food chains and crops from UV rays.
Ozone Layer by Girishwar
This is PPT was presented by Mr. Girishwar of 9th std, JNV Lepakshi, to the INOVIT-2015 organised by Vellore Institute of Technology, Vellore, Tamilnadu on 24-25th Jan 2015.
ozone depletion
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
• Introduction
Ozone
Ozone layer
• Ozone–oxygen cycle
Chapman cycle
• Ozone Depletion
• Ozone Hole
• Effect Of Ozone Depletion
• Solution
• World Ozone Day
Ozone
The document discusses the ozone layer, its importance in shielding the Earth from UV radiation, and the threats to it. It notes that ozone is found mainly in the stratosphere, where it forms the ozone layer between 6-30 miles above the surface. The ozone layer absorbs most of the sun's UV rays and plays a key role in atmospheric temperature. However, chlorofluorocarbons and other ozone-depleting substances have damaged the ozone layer, leading to the Antarctic ozone hole. This depletion increases UV levels and can harm both human health and the environment. International agreements like the Montreal Protocol have sought to phase out ozone-harming chemicals and find alternatives.
Ozone Depletion
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
Ozone layer, Ozone–oxygen cycle, ozone depletion,Ozone Depleting Substances, Ozone Depletion Process,Ozone Hole, Effect Of Ozone Depletion,solution
Ozone depletion
The ozone layer is a layer in the stratosphere between 20-30 km above the Earth's surface that contains 90% of the atmosphere's ozone. Ozone is formed through the Chapman cycle where oxygen is converted to ozone via ultraviolet radiation. Ozone depletion occurs when gases like CFCs and halons react with ozone due to UV radiation, forming chlorine atoms that can destroy 100,000 ozone molecules each. This causes thinning of the ozone layer, known as the ozone hole over Antarctica. Ozone depletion leads to increased UV radiation reaching the Earth, harming humans, animals, plants and contributing to global warming. International agreements like the Montreal Protocol aim to phase out ozone depleting
The Ozone Layer and Its Depletion
The document discusses the ozone layer in the Earth's stratosphere that protects the planet from harmful UV radiation. It is formed through a reaction involving oxygen and ultraviolet light. While ozone itself is poisonous at ground level, the ozone layer is beneficial as it prevents excessive UV radiation from reaching the surface and causing issues like skin cancer. However, the ozone layer is under threat due to ozone depleting substances released into the atmosphere such as CFCs, halons, HCFCs, and methyl chloroform which are used in products like refrigerants and aerosol sprays.
Ozone depletion and prevention (p.a.c 2015)
The document discusses the ozone layer, how it is formed through the Chapman cycle, and how it is depleted. The ozone layer is a layer in the stratosphere that contains 90% of atmospheric ozone and protects the Earth from harmful UV rays. It is formed through a process called the Chapman cycle where oxygen is converted to ozone. Ozone depletion occurs when gases like CFCs and halons react with ozone due to UV light, destroying the ozone molecules. This depletion leads to the formation of the ozone hole over Antarctica and increased UV radiation reaching the Earth's surface, harming human health, aquatic life, and contributing to global warming.
The ozone layer
The ozone layer is a gas layer located in the stratosphere that protects life on Earth from UV radiation. CFCs released into the atmosphere were depleting the ozone layer by destroying ozone molecules. This was causing the ozone hole over Antarctica to grow and allowing more UV radiation to reach the Earth's surface, threatening life. In response, the international community adopted the Montreal Protocol to phase out CFC production, which has successfully led to the recovery of the ozone layer by 2050-2075 while also helping reduce greenhouse gases.
Ozone depletion
The document discusses ozone depletion in the stratosphere. It notes that a thin layer of ozone in the stratosphere protects the Earth from harmful UV radiation. The concentration of ozone is highest at mid-latitudes in the stratosphere. The document then explains that chlorofluorocarbons (CFCs) released into the atmosphere can travel to the stratosphere and destroy ozone molecules. It highlights that annual ozone depletion over Antarctica reaches up to 70% due to chemical reactions on polar stratospheric clouds that release chlorine. The 1991 eruption of Mount Pinatubo increased mid-latitude ozone depletion by injecting sulfur into the stratosphere. International agreements aim to phase out CFC production but developing nations
What's hot (20)
Similar to Ozone Depletion
ozone layer depletion.pptx
The document discusses the ozone layer, its importance in protecting Earth from UV radiation, and the causes and impacts of ozone layer depletion. The ozone layer absorbs UV radiation in the stratosphere and protects living organisms. Ozone depletion is caused by ozone depleting substances (ODS) released by human activities like CFCs from refrigerants. This thins the ozone layer and allows more UV radiation to reach the Earth's surface, harming humans, animals and plants through increased skin cancer and other health issues. Preventive measures include replacing CFCs and reducing vehicle use and emissions.
Ozone Layer Depletion
This document discusses ozone layer depletion. It defines ozone and distinguishes between good and bad ozone. The ozone layer in the stratosphere protects the Earth from UV radiation. Certain chemicals like CFCs used in manufacturing and products deplete the ozone layer when they reach the stratosphere. Volcanic ash also contributes to ozone depletion. Increased UV radiation due to depletion causes health effects in humans like skin cancer and environmental effects like climate change and reduced plankton. The largest ozone hole forms over Antarctica each year. Prevention efforts include using eco-friendly products and reducing emissions.
EDU 11 Practicum.pdf
1) The document discusses ozone layer depletion, its causes, effects, and solutions.
2) The main causes of ozone depletion are man-made chemicals like chlorofluorocarbons that destroy the ozone when released into the air.
3) Depletion of the ozone layer leads to increased UV radiation reaching the Earth's surface, which can harm human health, animals, plants, and marine life.
Presentation on ozone depletion
Ozone is a bluish gas composed of three oxygen atoms that exists in two main layers in the atmosphere. The majority of ozone exists in the stratosphere, where it forms the ozone layer that protects life on Earth by absorbing harmful ultraviolet radiation. Ozone depletion occurs when chlorofluorocarbons released by industry break down in the stratosphere, releasing chlorine atoms that destroy ozone molecules. This depletion increases ultraviolet radiation at the surface with negative impacts on human health, agriculture, plants, animals and materials. International agreements like the Montreal Protocol have led countries to ban ozone-depleting substances to prevent further damage to the protective ozone layer.
Ozone Layer
Ozone is a molecule composed of three oxygen atoms that absorbs ultraviolet radiation. It is found in both the stratosphere, where it forms an important protective ozone layer, and at ground level as a component of smog. The document discusses the composition and properties of ozone, how the stratospheric ozone layer can be depleted by man-made chemicals like CFCs, and the significance of monitoring ozone levels globally.
Ozone day
Ozone (O3) is a gas that occurs naturally in small amounts in the Earth's upper atmosphere and protects life on Earth by absorbing harmful ultraviolet radiation from the sun. The ozone layer is being depleted by human-produced chemicals like chlorofluorocarbons which release chlorine that destroys ozone molecules. This depletion is leading to thinning of the ozone layer and formation of an "ozone hole" over Antarctica, allowing more ultraviolet radiation to reach the Earth's surface and harm humans, animals and plants. Solutions to address ozone depletion include phasing out ozone-depleting substances and reducing emissions of other gases that contribute to the problem.
The ozone layer
The document discusses the ozone layer, including what it is, where it is located, and why it is important for life on Earth. It protects the Earth from harmful ultraviolet radiation from the sun. The ozone layer is being affected by human emissions of chlorofluorocarbons (CFCs), which are destroying the ozone. This is leading to thinning of the ozone layer and the formation of an ozone hole over Antarctica. The consequences of ozone depletion include increased skin cancer risks and other health impacts. Humans can help protect themselves from UV radiation by wearing sunscreen, hats, and sunglasses when outside.
Ozone Layer.pptx
Ozone (O3) is a molecule made up of three atoms of oxygen (O), and very reactive gas.
Bluish gas that harmful to breathe.
Is mostly found in the stratosphere, where it protects us from the Sun’s harmful ultraviolet (UV) radiation.
Although it represents only a tiny fraction of the atmosphere, ozone is essential for life on Earth.
Ozone in the stratosphere— a layer of the atmosphere between 15 and 50 kilometers (10 and 31 miles) above us—acts as a shield to protect Earth’s surface from the sun’s harmful ultraviolet radiation.
Ozone
Ozone (O3) is a bluish gas composed of three oxygen atoms that forms a protective layer in the stratosphere. It is produced through chemical reactions involving oxygen and ultraviolet radiation from the sun. Nearly 90% of Earth's ozone is found in the ozone layer between 15-30 km above the surface. The ozone layer protects life on Earth by absorbing harmful ultraviolet radiation from the sun. Depletion of the ozone layer is caused primarily by chlorofluorocarbons (CFCs) released into the atmosphere from industry. CFCs rise into the stratosphere where UV light breaks them down, releasing chlorine atoms that catalyze the destruction of ozone molecules. Ozone depletion increases risks
Ozone depletion and imacts
The document discusses ozone depletion and its impacts. It defines the ozone layer and explains its importance in protecting life on Earth from UV radiation. Ozone depletion occurs when chlorofluorocarbons (CFCs) released into the atmosphere break down ozone molecules. This allows more UV radiation to reach the surface, affecting global warming, human health, agriculture, and marine ecosystems. The document traces the history of ozone depletion research and international agreements like the Montreal Protocol to regulate CFC emissions and limit further damage to the ozone layer.
Semester 4
The ozone layer absorbs harmful UV radiation from the sun and is important for life on Earth. CFCs and HCFCs released chemicals like chlorine when they reached the stratosphere, which caused chemical reactions that depleted the ozone layer. One chlorine atom can break down over 100,000 ozone molecules. Thinning of the ozone layer allows more UV radiation to reach the Earth, which could harm humans, animals and plants. Measures to control depletion include limiting private vehicles, using eco-friendly cleaners, avoiding pesticides and banning dangerous gases.
ozone layer.pdf
The document discusses the ozone layer, what ozone layer depletion is, its causes and effects. The ozone layer is a region in the stratosphere that protects the earth from UV radiation. Ozone layer depletion is the thinning of this layer caused by chemicals like CFCs releasing chlorine and bromine which destroy ozone. This exposes the earth to harmful UV rays and causes health issues in humans and damage to plants, animals and marine life. Solutions proposed are avoiding ozone depleting substances and using alternatives.
Greenhouse gases and global warming by MUHAMMAD FAHAD ANSARI 12IEEM 14
The document discusses ozone depletion and its causes and health effects. It explains that ozone, comprised of 3 oxygen molecules (O3), is found in the stratosphere and absorbs harmful UV radiation. Pollution containing CFCs and other compounds deplete the ozone layer by releasing chlorine and bromine when broken down by UV light, which then break down over 100,000 ozone molecules. As the ozone layer thins, more UV radiation reaches the Earth's surface, increasing health risks like skin cancer.
Ozone depletion....varun
The document discusses ozone, the ozone layer, and ozone depletion. It defines ozone as a triatomic form of oxygen found in the upper and lower atmosphere, and the ozone layer as absorbing 97-99% of the sun's ultraviolet light. The ozone layer is being destroyed by chemicals like CFCs released from industries and vehicles. Low temperatures in the upper atmosphere allow chlorine and bromine to destroy ozone, forming a hole. Overexposure to ultraviolet rays due to ozone depletion increases risks of skin cancer, eye damage, immune system damage, and DNA damage. Actions are needed to limit chemicals that deplete ozone and encourage plant growth to increase oxygen production.
A_seminar_on_the_depletion_of_the_Ozone.pptx
This seminar presentation summarizes Ozone layer depletion. It introduces ozone and the ozone layer, how ozone depleting substances like CFCs react with ozone leading to its destruction. The consequences of ozone layer depletion include increased skin cancer and other health issues. International agreements like the Montreal Protocol were enacted to regulate ozone depleting substances and protect the ozone layer.
Ozone layer - Guardian of our planet /importance of it/depletion and recovery...
Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere (see details below). ... CFCs and halons cause chemical reactions that break down ozone molecules, reducing ozone's ultraviolet radiation-absorbing capacity.
The ozone layer that shields life from cancer-causing solar rays is recovering at a rate of one to three percent per decade, reversing years of dangerous depletion caused by the release of harmful chemicals, a U.N. study said on November 5. “The Antarctic ozone hole is recovering, while continuing to occur every year.
Presentation (1)-1.pdf
The document discusses a presentation given on World Ozone Day about the ozone layer. It provides background on the ozone layer, noting that it protects life on Earth by absorbing 97-99% of harmful UV radiation from the sun. It then summarizes the five layers of the atmosphere, with an emphasis on the stratosphere where the ozone layer is located. The document outlines some of the main causes of ozone layer depletion including chlorofluorocarbons and other ozone depleting substances, as well as the harmful effects of depletion on human health, animals, plants, and marine life.
Ozone
The document discusses the ozone layer, its importance in shielding the Earth from UV radiation, and the threats to it. It notes that ozone is found mainly in the stratosphere, where it forms the ozone layer between 6-30 miles above the surface. The ozone layer absorbs most of the sun's UV rays and plays a key role in atmospheric temperature. However, chlorofluorocarbons and other ozone-depleting substances have damaged the ozone layer, leading to the Antarctic ozone hole. This depletion increases UV levels and can harm both human health and the environment. International agreements like the Montreal Protocol have sought to phase out ozone-harming chemicals and find alternatives.
Observation of ozone day
The document discusses World Ozone Day which is observed annually on September 16th to commemorate the signing of the Montreal Protocol on substances that deplete the ozone layer. It provides background on the formation of the ozone layer and how it allowed life to evolve on land. It also describes the causes and effects of ozone depletion and the various international agreements to phase out ozone depleting substances like CFCs. Satellite images show the Antarctic ozone hole has reduced in size in recent decades but recovery is still ongoing. Continued enforcement of protocols and further scientific study are needed.
Ozone depletion, Acid Rain, Greenhouse effect and UV Radiation
Environmental Issues-Ozone depletion, Acid Rain, Greenhouse effect and UV Radiation (Definition, Cause/Source, Effects, Preventive Measures)
Similar to Ozone Depletion (20)
Greenhouse gases and global warming by MUHAMMAD FAHAD ANSARI 12IEEM 14
Greenhouse gases and global warming by MUHAMMAD FAHAD ANSARI 12IEEM 14
Ozone layer - Guardian of our planet /importance of it/depletion and recovery...
Ozone layer - Guardian of our planet /importance of it/depletion and recovery...
Ozone depletion, Acid Rain, Greenhouse effect and UV Radiation
Ozone depletion, Acid Rain, Greenhouse effect and UV Radiation
Recently uploaded
Epcon is One of the World's leading Manufacturing Companies.
Epcon is One of the World's leading Manufacturing Companies. With over 4000 installations worldwide, EPCON has been pioneering new techniques since 1977 that have become industry standards now. Founded in 1977, Epcon has grown from a one-man operation to a global leader in developing and manufacturing innovative air pollution control technology and industrial heating equipment.
Wildlife-AnIntroduction.pdf so that you know more about our environment
All about wildlife, if you are fond of animals and wildlife then do follow us for more content like this
在线办理(lboro毕业证书)拉夫堡大学毕业证学历证书一模一样
学校原件一模一样【微信：741003700 】《(lboro毕业证书)拉夫堡大学毕业证学历证书》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Recycling and Disposal on SWM Raymond Einyu pptx
Increasing urbanization, rural–urban migration, rising standards of living, and rapid development associated with population growth have resulted in increased solid waste generation by industrial, domestic and other activities in Nairobi City. It has been noted in other contexts too that increasing population, changing consumption patterns, economic development, changing income, urbanization and industrialization all contribute to the increased generation of waste.
With the increasing urban population in Kenya, which is estimated to be growing at a rate higher than that of the country’s general population, waste generation and management is already a major challenge. The industrialization and urbanization process in the country, dominated by one major city – Nairobi, which has around four times the population of the next largest urban centre (Mombasa) – has witnessed an exponential increase in the generation of solid waste. It is projected that by 2030, about 50 per cent of the Kenyan population will be urban.
Aim:
A healthy, safe, secure and sustainable solid waste management system fit for a world – class city.
Improve and protect the public health of Nairobi residents and visitors.
Ecological health, diversity and productivity and maximize resource recovery through the participatory approach.
Goals:
Build awareness and capacity for source separation as essential components of sustainable waste management.
Build new environmentally sound infrastructure and systems for safe disposal of residual waste and replacing current dumpsites which should be commissioned.
Current solid waste management situation:
The status.
Solid waste generation rate is at 2240 tones / day
collection efficiently is at about 50%.
Actors i.e. city authorities, CBO’s , private firms and self-disposal
Current SWM Situation in Nairobi City:
Solid waste generation – collection – dumping
Good Practices:
• Separation – recycling – marketing.
• Open dumpsite dandora dump site through public education on source separation of waste, of which the situation can be reversed.
• Nairobi is one of the C40 cities in this respect , various actors in the solid waste management space have adopted a variety of technologies to reduce short lived climate pollutants including source separation , recycling , marketing of the recycled products.
• Through the network, it should expect to benefit from expertise of the different actors in the network in terms of applicable technologies and practices in reducing the short-lived climate pollutants.
Good practices:
Despite the dismal collection of solid waste in Nairobi city, there are practices and activities of informal actors (CBOs, CBO-SACCOs and yard shop operators) and other formal industrial actors on solid waste collection, recycling and waste reduction.
Practices and activities of these actor groups are viewed as innovations with the potential to change the way solid waste is handled.
CHALLENGES:
• Resource Allocation.
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
The incorporation of a 3DCSM and completion of HRSC provided a tool for enhanced, data-driven, decisions to support a change in remediation closure strategies. Currently, an approved pilot study has been obtained to shut-down the remediation systems (ISCO, P&T) and conduct a hydraulic study under non-pumping conditions. A separate micro-biological bench scale treatability study was competed that yielded positive results for an emerging innovative technology. As a result, a field pilot study has commenced with results expected in nine-twelve months. With the results of the hydraulic study, field pilot studies and an updated risk assessment leading site monitoring optimization cost lifecycle savings upwards of $15MM towards an alternatively evolved best available technology remediation closure strategy.
Microbial characterisation and identification, and potability of River Kuywa ...
Microbial characterisation and identification, and potability of River Kuywa ...Open Access Research Paper
Water contamination is one of the major causes of water borne diseases worldwide. In Kenya, approximately 43% of people lack access to potable water due to human contamination. River Kuywa water is currently experiencing contamination due to human activities. Its water is widely used for domestic, agricultural, industrial and recreational purposes. This study aimed at characterizing bacteria and fungi in river Kuywa water. Water samples were randomly collected from four sites of the river: site A (Matisi), site B (Ngwelo), site C (Nzoia water pump) and site D (Chalicha), during the dry season (January-March 2018) and wet season (April-July 2018) and were transported to Maseno University Microbiology and plant pathology laboratory for analysis. The characterization and identification of bacteria and fungi were carried out using standard microbiological techniques. Nine bacterial genera and three fungi were identified from Kuywa river water. Clostridium spp., Staphylococcus spp., Enterobacter spp., Streptococcus spp., E. coli, Klebsiella spp., Shigella spp., Proteus spp. and Salmonella spp. Fungi were Fusarium oxysporum, Aspergillus flavus complex and Penicillium species. Wet season recorded highest bacterial and fungal counts (6.61-7.66 and 3.83-6.75cfu/ml) respectively. The results indicated that the river Kuywa water is polluted and therefore unsafe for human consumption before treatment. It is therefore recommended that the communities to ensure that they boil water especially for drinking.
Promoting Multilateral Cooperation for Sustainable Peatland management
Presented by Agus Julianto on GLF Peatlands 2024 - 360 Degree Approach to Improving Capacity of Multiple Stakeholders to Manage Peatland Sustainably
Global Peatlands Map and Hotspot Explanation Atlas
Presented by Alexandra Barthelmes at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
ENVIRONMENT~ Renewable Energy Sources and their future prospects.
This presentation is for us to know that how our Environment need Attention for protection of our natural resources which are depleted day by day that's why we need to take time and shift our attention to renewable energy sources instead of non-renewable sources which are better and Eco-friendly for our environment. these renewable energy sources are so helpful for our planet and for every living organism which depends on environment.
Improving the Management of Peatlands and the Capacities of Stakeholders in I...
Improving the Management of Peatlands and the Capacities of Stakeholders in I...Global Landscapes Forum (GLF)
Presented by Sonya Dewi at GLF Peatlands 2024 - 360 Degree Approach to Improving Capacity of Multiple Stakeholders to Manage Peatland SustainablyOverview of the Global Peatlands Assessment
Presented by Patrick Scheel at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
Climate Change All over the World .pptx
Climate change refers to significant and lasting changes in the average weather patterns over periods ranging from decades to millions of years. It encompasses both global warming driven by human emissions of greenhouse gases and the resulting large-scale shifts in weather patterns. While climate change is a natural phenomenon, human activities, particularly since the Industrial Revolution, have accelerated its pace and intensity
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...Open Access Research Paper
Water polluted by dyestuffs compounds is a global threat to health and the environment; accordingly, we prepared a green novel sorbent chemical and Physical system from an algae, chitosan and chitosan nanoparticle and impregnated with algae with chitosan nanocomposite for the sorption of Malachite green dye from water. The algae with chitosan nanocomposite by a simple method and used as a recyclable and effective adsorbent for the removal of malachite green dye from aqueous solutions. Algae, chitosan, chitosan nanoparticle and algae with chitosan nanocomposite were characterized using different physicochemical methods. The functional groups and chemical compounds found in algae, chitosan, chitosan algae, chitosan nanoparticle, and chitosan nanoparticle with algae were identified using FTIR, SEM, and TGADTA/DTG techniques. The optimal adsorption conditions, different dosages, pH and Temperature the amount of algae with chitosan nanocomposite were determined. At optimized conditions and the batch equilibrium studies more than 99% of the dye was removed. The adsorption process data matched well kinetics showed that the reaction order for dye varied with pseudo-first order and pseudo-second order. Furthermore, the maximum adsorption capacity of the algae with chitosan nanocomposite toward malachite green dye reached as high as 15.5mg/g, respectively. Finally, multiple times reusing of algae with chitosan nanocomposite and removing dye from a real wastewater has made it a promising and attractive option for further practical applications.
Peatlands of Latin America and the Caribbean
Presented by The Global Peatlands Assessment: Mapping, Policy, and Action at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
Peatland Management in Indonesia, Science to Policy and Knowledge Education
Peatland Management in Indonesia, Science to Policy and Knowledge EducationGlobal Landscapes Forum (GLF)
Presented by Feri Johana at GLF Peatlands 2024 - 360 Degree Approach to Improving Capacity of Multiple Stakeholders to Manage Peatland Sustainably原版制作(Newcastle毕业证书)纽卡斯尔大学毕业证在读证明一模一样
学校原件一模一样【微信：741003700 】《(Newcastle毕业证书)纽卡斯尔大学毕业证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Improving the viability of probiotics by encapsulation methods for developmen...
Improving the viability of probiotics by encapsulation methods for developmen...Open Access Research Paper
The popularity of functional foods among scientists and common people has been increasing day by day. Awareness and modernization make the consumer think better regarding food and nutrition. Now a day’s individual knows very well about the relation between food consumption and disease prevalence. Humans have a diversity of microbes in the gut that together form the gut microflora. Probiotics are the health-promoting live microbial cells improve host health through gut and brain connection and fighting against harmful bacteria. Bifidobacterium and Lactobacillus are the two bacterial genera which are considered to be probiotic. These good bacteria are facing challenges of viability. There are so many factors such as sensitivity to heat, pH, acidity, osmotic effect, mechanical shear, chemical components, freezing and storage time as well which affects the viability of probiotics in the dairy food matrix as well as in the gut. Multiple efforts have been done in the past and ongoing in present for these beneficial microbial population stability until their destination in the gut. One of a useful technique known as microencapsulation makes the probiotic effective in the diversified conditions and maintain these microbe’s community to the optimum level for achieving targeted benefits. Dairy products are found to be an ideal vehicle for probiotic incorporation. It has been seen that the encapsulated microbial cells show higher viability than the free cells in different processing and storage conditions as well as against bile salts in the gut. They make the food functional when incorporated, without affecting the product sensory characteristics.
Enhanced action and stakeholder engagement for sustainable peatland management
Enhanced action and stakeholder engagement for sustainable peatland managementGlobal Landscapes Forum (GLF)
Presented by Jan Peters at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and ActionRecently uploaded (20)
world-environment-day-2024-240601103559-14f4c0b4.pptx
world-environment-day-2024-240601103559-14f4c0b4.pptx
Epcon is One of the World's leading Manufacturing Companies.
Epcon is One of the World's leading Manufacturing Companies.
Wildlife-AnIntroduction.pdf so that you know more about our environment
Wildlife-AnIntroduction.pdf so that you know more about our environment
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
Microbial characterisation and identification, and potability of River Kuywa ...
Microbial characterisation and identification, and potability of River Kuywa ...
Promoting Multilateral Cooperation for Sustainable Peatland management
Promoting Multilateral Cooperation for Sustainable Peatland management
Global Peatlands Map and Hotspot Explanation Atlas
Global Peatlands Map and Hotspot Explanation Atlas
ENVIRONMENT~ Renewable Energy Sources and their future prospects.
ENVIRONMENT~ Renewable Energy Sources and their future prospects.
Improving the Management of Peatlands and the Capacities of Stakeholders in I...
Improving the Management of Peatlands and the Capacities of Stakeholders in I...
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...
Peatland Management in Indonesia, Science to Policy and Knowledge Education
Peatland Management in Indonesia, Science to Policy and Knowledge Education
Improving the viability of probiotics by encapsulation methods for developmen...
Improving the viability of probiotics by encapsulation methods for developmen...
Enhanced action and stakeholder engagement for sustainable peatland management
Enhanced action and stakeholder engagement for sustainable peatland management
Ozone Depletion
- 1. Ozone Depletion English Club Sadiri G. Ulep Mary Rose S. Dalmen
- 2. Ozone Depletion OZONE -an odourless gas found in the stratosphere. - made up of 3 oxygen atoms stuck together which is vital to life on earth.
- 3. Ozone Depletion • OZONE LAYER – the amount of ozone gas that protects life on earth from strong ultraviolet radiation that comes from the sun. – absorbs 97-99 % of the UV radiation. • ULTRAVIOLET RAYS -harmful rays emitted by the sun.
- 4. Ozone Layer
- 5. Ozone Depletion • DEPLETION – to lessen markedly,in quantity, content, power, or value. – WHAT THEN IS OZONE DEPLETION?
- 8. Ozone Depletion IMPACT OF OZONE DEPLETION TO THE ENVIRONMENT
- 9. Ozone Depletion 1. Damage to human health. 2. Devastation to environment. 3.Threat to marine life. 4. Effect on animals.
- 12. Ozone Depletion 1. Desist from using pesticides. 2.Discourage driving of private vehicles. 3. Utilize environmentally friendly cleaning products.