Biofuels – a safer substitute
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This document discusses biofuels as a safer substitute for gasoline. It defines biofuels as fuels produced from living organisms through biomass conversion. The document outlines the three generations of biofuels: first generation from sugar, starch or vegetable oil; second generation from sustainable feedstock; and future cellulosic ethanol. It then focuses on ethanol biofuels, describing their production from corn or cellulosic biomass. While corn ethanol currently reduces greenhouse gas emissions by 20% compared to gasoline, cellulosic ethanol has the potential to reduce emissions by 86%. The document concludes that with depleting fossil fuels, biofuels can act as a perfect substitute and have less environmental impact.
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This presentation provides an overview of different types of biofuels. First generation biofuels are made from sugars and vegetable oils, while second generation biofuels can be made from various biomass sources like cellulosic ethanol from algae or wood. Specific biofuels discussed include bioethanol, biomethanol, biobutanol, biodiesel, green diesel, biofuel gasoline, vegetable oils, bioethers, biogas, and solid biofuels. Advantages are reduced reliance on foreign oil and reduced pollution, while disadvantages include potential rises in food prices, vehicle safety concerns, and issues with energy balance. Biofuels can be used as alternatives to fossil fuels for transportation, heating homes, and
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3) The oil extracted from algae can be converted into biodiesel fuel through a process called transesterification, where the algal oil reacts with ethanol and a catalyst to produce biodiesel and glycerol.
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Biofuels were first used by ancient people and have increased in popularity due to rising oil prices and the need for energy security. Biofuels can be made from biomass sources like sugarcane, maize, jatropha plants, and more. Ethanol is commonly made from sugarcane and is used as fuel in Brazil. Jatropha is a non-edible oilseed plant used to produce biodiesel and grows well in marginal lands. India aims to replace 20% of its diesel with jatropha biodiesel by promoting large-scale jatropha cultivation. Biotechnology advances may enhance biofuel production through genetic modification of energy crops.
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- Ethanol is typically produced from sugars and starches through fermentation. Biodiesel is made through a chemical process called transesterification of vegetable oils.
- Biogas is produced through anaerobic digestion of organic waste to produce a methane-rich gas.
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3) The enzymatic hydrolysis of pretreated biomass into glucose and other sugars and models for consolidated bioprocessing using single or consortia of microbes.
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Biofuels can be made from agricultural crops and biomass as alternatives to fossil fuels. First generation biofuels are made from sugar, starch, vegetable oils or animal fats using conventional technology like fermentation of corn into ethanol. Biodiesel is made through transesterification of vegetable oils like soybean, rapeseed or waste cooking oil. Biogas is produced through anaerobic digestion of animal waste and contains methane that can be used for energy. While biofuels provide benefits like reducing emissions, some concerns include high production costs, competition with food crops for land, and sustainability issues depending on feedstock.
Bioethanol biofuel renewable energy resources
This document summarizes a lecture about renewable energy resources, focusing on bioethanol production from lignocellulosic biomass. It discusses the classification of biofuels as first or second generation. The process of producing cellulosic bioethanol involves pretreating lignocellulosic biomass, followed by enzymatic hydrolysis to break it down into sugars and fermentation to convert the sugars to ethanol. Advantages of bioethanol include cleaner exhaust, reduced greenhouse gases, and energy security. Challenges include the amount of land required and potential impacts on food production. Biodiesel production via transesterification of vegetable oils is also summarized.
Biofuel
This document discusses biofuels as a sustainable alternative to fossil fuels. It defines biofuels as liquid fuels produced through biological processes from biomass sources. The document outlines four generations of biofuels from first generation using food crops, to fourth generation using non-arable land. The main types of biofuels - bioethanol, biodiesel, biogas, and algal-based biofuels - are described. Microbes play an important role in producing and refining biofuels from oils, carbohydrates, and proteins. The document concludes that continued advances in biofuels will help conserve non-renewable resources and lead to a more sustainable energy future.
bioethanol production from sugarcane waste
This document summarizes the production of bioethanol from sugar cane waste. It discusses that bioethanol is an alcohol made by fermenting carbohydrates from plants like sugarcane and corn. There are three main methods of bioethanol production: sugar ethanol from sugarcane, starch ethanol from grains, and cellulosic ethanol from plant waste. The production process involves hydrolysis to break down biomass into sugars, fermentation of the sugars into ethanol using yeast, and fractional distillation to separate ethanol from water. Bioethanol has advantages as a cleaner-burning, renewable fuel but also has disadvantages related to energy efficiency, land use, and food competition. Future development aims to make bioethanol
Biomass:an alternative energy source ppt
Biomass is a renewable energy source derived from living or recently living organisms. It includes materials like wood chips, agricultural waste, and human/animal waste. Biomass can be converted into energy through processes like combustion, anaerobic digestion, and fermentation to produce electricity, heat, or fuels like ethanol and biodiesel. While biomass has benefits as a renewable alternative to fossil fuels, it also faces challenges in terms of production costs and potential environmental impacts like air pollution and soil erosion if not managed properly.
Biofuel presentation org
This document discusses various types of biofuels including bioethanol, biodiesel, biogas, and biobutanol. It provides details on the production processes and feedstocks used for each type of biofuel. The advantages and disadvantages of biofuels compared to fossil fuels are also summarized.
THE ROLE OF MICROBES IN ALTERNATE ENERGY GENERATION.pptx
This document discusses how microbes can help generate alternative energy. It describes several ways microbes are used to produce biofuels like ethanol, butanol, biogas, biomethane, hydrogen, and biodiesel. Microbes can ferment plant biomass to produce ethanol, or be engineered to produce butanol as a higher energy alternative to gasoline. Anaerobic digestion of organic waste by microbes produces biogas which can be upgraded to biomethane. Some microbes can produce hydrogen through biological processes. Microbes are also used to produce biodiesel through microbial lipids. Finally, microbial fuel cells generate electricity directly from organic compounds using bacteria.
Biomass an Alternative.pdf
This document discusses biomass as an alternative energy source. It notes that biomass is a renewable source derived from living or recently living organisms, including waste agricultural materials, human waste, and dead plant matter. Biomass can be converted into energy through processes like combustion, anaerobic digestion, and fermentation to produce electricity, heat, or fuels like ethanol and biodiesel. While biomass has potential as a renewable alternative to fossil fuels, it also faces challenges in terms of cost, infrastructure needs, and potential environmental impacts from production and use.
Biomass ppt By Mitesh Kumar
This document discusses biomass as an alternative energy source. It notes that biomass is a renewable source derived from living or recently living organisms, including waste products from agriculture, forestry and human activities. Biomass can be converted into energy through processes like combustion, anaerobic digestion, fermentation and pyrolysis. While biomass has potential benefits as a renewable resource, it also faces challenges in terms of cost, infrastructure requirements, and environmental impacts from production and use. The document concludes that biomass can play a role as a complement to fossil fuels but has limitations and is not a complete replacement on its own due to technical and economic issues.
Chapter 1, FUEL BIOTECHNOLOGY 1 pptx.pptx
Biofuel (AKA agrofuel): any fuel whose energy is obtained through a process of biological carbon fixation
Bioenergy is renewable energy made available from materials derived from biological sources.
Role of bioenergy in energy management
it covers various types of bioenergy and also contains various energy yielding technologies. it shows the bioenergy scenerio in India.it also shows various activities and programmes related with bioenergy
Biofuels
Biofuels are a type of renewable energy derived from biological carbon fixation. They include fuels produced from biomass conversion as well as solid biomass, liquid fuels, and biogases. Factors such as rising oil prices, energy security concerns, and reducing greenhouse gas emissions are driving increased attention to biofuels. Biomass can be used to produce transportation fuels like ethanol and biodiesel, as well as thermal energy. Advanced biofuel production may utilize biorefineries that integrate processes to produce multiple fuels and chemicals from biomass, analogous to petroleum refineries. Environmental impacts of biofuel production include both benefits like carbon neutrality and waste reduction, and concerns over air and soil pollution.
BIO-FUEL AND BIO-DIESEL PRESENTATION
This document discusses different types of biofuels including bioethanol, biodiesel, and biogas. It provides details on their production processes and feedstocks. Bioethanol is produced from sugars and starches via fermentation. Biodiesel is made from vegetable oils or animal fats using transesterification. Biogas is generated from organic waste through anaerobic digestion by bacteria. The advantages of biofuels are provided such as being renewable and reducing greenhouse gas emissions, though high production costs and potential food shortages are disadvantages.
1 Biomass Energy Systems.ppt
This document discusses various types of biomass energy systems and biofuels. It covers first, second, third and fourth generation biofuels produced from biomass sources like sugarcane, corn, vegetable oils, algae, and cellulosic feedstocks. The document discusses technologies like gasification, biogas production, and the use of biomass for liquid fuels and electricity. It also covers topics like the economic and policy aspects of biomass energy systems.
Biofuelcomplete
Biofuels are fuels produced from biological sources such as plants and are seen as an alternative to fossil fuels. The document discusses various types of biofuels including first, second, and third generation biofuels produced from sources like vegetable oils, non-edible plant materials, and algae. Benefits of biofuels include reducing dependence on foreign oil, lowering emissions, and boosting rural economies. However, higher production costs and potential issues with low temperatures are disadvantages.
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Biofuels – a safer substitute
- 1. Biofuels - A Safer Substitute - Piyush Pattanaik
- 2. What are “biofuels”? • A biofuel is a fuel that contains energy from geologically recent carbon fixation. These fuels are produced from living organisms. • These fuels are made by a biomass conversion (biomass refers to recently living organisms, most often referring to plants or plant-derived materials). This biomass can be converted to convenient energy containing substances in three different ways: thermal conversion, chemical conversion, and biochemical conversion.
- 3. The First Generation • 'First-generation' or conventional biofuels are made from sugar, starch, or vegetable oil. 1.1.1 Bioalcohols 1.1.2 Biodiesel 1.1.3 Green diesel 1.1.4 Biofuel gasoline 1.1.5 Vegetable oil 1.1.6 Bioethers 1.1.7 Biogas 1.1.8 Syngas 1.1.9 Solid biofuels
- 4. Second-generation (advanced) biofuels • Second-generation biofuels are produced from sustainable feedstock. Sustainability of a feedstock is defined, among others, by availability of the feedstock, impact on GHG emissions, and impact on biodiversity and land use. • Many second-generation biofuels are under development such as Cellulosic ethanol, Algae fuel, biohydrogen, biomethanol, DMF, BioDME, Fischer- Tropsch diesel, biohydrogen diesel, mixed alcohols and wood diesel.
- 5. A Brief Study Ethanol Biofuels • Bioethanol is an alcohol made by fermentation, mostly from carbohydrates produced in sugar or starch crops such as corn or sugarcane. • Cellulosic biomass, derived from non-food sources, such as trees and grasses, is also being developed as a feedstock for ethanol production. • Ethanol can be used as a fuel for vehicles in its pure form, but it is usually used as a gasoline additive to increase octane and improve vehicle emissions. • Bioethanol is widely used in the USA and in Brazil. Current plant design does not provide for converting the lignin portion of plant raw materials to fuel components by fermentation.
- 6. Corn Ethanol • Corn ethanol is ethanol produced from corn that is used as a biomass. Corn ethanol is produced by means of ethanol fermentation and distillation. • Corn ethanol is mainly used as an oxygenate in gasoline to produce a low-level blend. To a lesser extent, it is used as fuel for E85 flex-fuel vehicles. • Corn is the main feedstock used for producing ethanol fuel in the United States.
- 7. Production Methods • Broadly, there are two main types of corn ethanol production: i) Dry milling process - It is an enzymatic/biological process in which yeast is used for conversion of sugar(carbohydrate) into ethanol & CO2. ii) Wet milling process – It is a chemical process in which sulphuric acid along with water is added that separates the grain into many components. This slurry is then mechanically processed to segregate the corn germ. The oil is obtained as bi- product. The remaining components of fiber, gluten and starch are segregated out using screen, hydroclonic and centrifugal separators. Out of these components, the corn starch and remaining water are fermented to form ethanol through a process similar to dry-milling.
- 8. Environmental view • Ethanol produced today results in fewer greenhouse gas (GHG) emissions than gasoline and is fully biodegradable, unlike some fuel additives. • Today, on a life cycle basis, ethanol produced from corn results in about a 20 percent reduction in GHG emissions relative to gasoline. With improved efficiency and use of renewable energy, this reduction could be as much as 52 percent. • In the future, ethanol produced from cellulose has the potential to cut life cycle GHG emissions by up to 86 percent relative to gasoline. • Ethanol blended fuels currently in the market – whether E10 or E85 – meet stringent tailpipe emission standards. • Ethanol readily biodegrades without harm to the environment, and is a safe, high-performance replacement for fuel additives.
- 9. Conclusion • With the increasing demand for fuel and depleting fossil fuel resources, biofuels can act as a perfect substitute for gasoline and diesel in the future. • Derived from bio sources, these have least environmental effects. • While biodiesel remains more expensive than regular diesel, consumers need to look beyond the cost per gallon to really gauge the economic benefits. Biodiesel vehicles get 30 percent better fuel economy than gasoline-powered vehicles [Consumer Reports]. • Above all, biofuels can be readily considered as renewable sources of energy.
- 10. - Piyush Pattanaik, 12BBT0077