Biodegradation
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This document discusses biodegradation, which is the breakdown of materials by bacteria, fungi and other microorganisms. Biodegradation can occur aerobically with oxygen or anaerobically without oxygen. It breaks down organic materials into basic components like carbon, hydrogen and oxygen. Factors that affect biodegradation include the microbial community present, oxygen levels, temperature, pH and the presence of light and water. Biodegradable plastics have been treated to break down when discarded using additives. While biodegradation can help eliminate waste, some chemicals cannot degrade and unknown byproducts may form.
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Biodegradation of xenobiotics
The document summarizes biodegradation of xenobiotic compounds, specifically petroleum hydrocarbons and pesticides. It discusses how various microorganisms can degrade these compounds through aerobic and anaerobic pathways. Key points include how bacteria and enzymes are able to break down petroleum, degrade pesticides, and transform toxic contaminants into less hazardous substances through microbial metabolic pathways and catabolic reactions. Recent research is also cited that studied biodegradation of crude oil by bacterial consortium in the marine environment.
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This document discusses bioleaching, which uses microorganisms to dissolve metals from ores. The most common microorganisms used are Thiobacillus thiooxidants and Thiobacillus ferrooxidants. Bioleaching can occur directly via microbial contact with ores or indirectly by microbes producing leaching agents. Common applications include copper, uranium, gold and silver, and silica leaching. Bioleaching is used commercially in slope, heap, and in situ leaching with ores placed in piles or left in the ground and irrigated with microbes.
Biodegradation of pesticides
1. Biodegradation is the process by which microorganisms like bacteria and fungi break down pesticides into non-toxic substances.
2. Common pesticides that are biodegraded include the soil fumigant methyl bromide, the herbicide dalapon, and the fungicide chloroneb.
3. For effective biodegradation, organisms must be able to degrade the pesticide, the pesticide must be bioavailable, and soil conditions must support microbial growth. Strategies to enhance biodegradation include biostimulation, bioventing, and bioaugmentation.
Biodegradation of hydrocarbon
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Bioremediation
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Biodegradation of xenobiotics
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2. Common pesticides that are biodegraded include the soil fumigant methyl bromide, the herbicide dalapon, and the fungicide chloroneb.
3. For effective biodegradation, organisms must be able to degrade the pesticide, the pesticide must be bioavailable, and soil conditions must support microbial growth. Strategies to enhance biodegradation include biostimulation, bioventing, and bioaugmentation.
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Environmental biotechnology
1) Environmental biotechnology uses biological processes to study and benefit the natural environment, such as remediating pollution or developing green technologies.
2) Bioaccumulation occurs when organisms absorb substances like pesticides at a higher rate than they can eliminate them, resulting in increasing concentration of the substance in the organism's body over time.
3) Bioremediation uses microorganisms to remove pollutants from the environment, either on-site (in situ) or by removing contaminated material (ex situ). Examples include phytoremediation and bioleaching.
BIODEGRADATION
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A biodegradable product can dissolve easily in the environment without destroying nature. It’s the opposite of plastic and Styrofoam, which harm the environment.
The meaning of biodegradation is breaking down of organic substances by the help of other living organisms such as bacteria and microbes.
History:
The first known use of the word in biological text was in 1961 when employed to describe the breakdown of material into the base components of carbon, hydrogen, and oxygen by microorganisms .
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Type of pesticides
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3. This helps maintain the organisms in suspension and provides conditions for optimum growth, such as gas-liquid contact and mixing, while minimizing shear stress on the cells.
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Bioremediation
•Introduction of bioremediation: Bioremediation refers to the process of using microorganisms to remove the environmental pollutants i.e. toxic wastes found in soil, water, air etc.
•In situ bioremediation:
It involves a direct approach for the microbial
degradation of xenobiotics at the sites of pollution
(soil, ground water).
•Types of in situ bioremediation:
Natural attenuation.
Engineered in situ bioremediation.
- Bioventing, biosparging, bioslurping,
phytoremediation.
•Ex situ bioremediation:
Waste or toxic pollutants can be collected from the polluted sites and bioremediation can be carried out at a designated place or site.
• Types of ex situ bioremediation
Land farming, windrow, biopiles, bioreactors.
•Microorganisms use in bioremediation:
A number of naturally occurring marine microbes
such as Pseudomonas sp. is capable of degrading oil and other hydrocarbons.
•Factors affecting bioremediation:
Nutrient availability, moisture content, pH, temperature, contaminant availability.
•References:
Satyanarayana U. Biotechnology. BOOKS AND ALLIED (P) Ltd.
Sharma P.D. Environmental Microbiology. RASTOGI PUBLICATIONS.
Gupta P.K. Biotechnology and Genomics. RASTOGI PUBLICATIONS.
Dubey R.C. A Textbook of Biotechnology. S Chand And Company Ltd.
Dubey R.C. A Textbook of Microbiology. S Chand And Company Ltd.
Willey/Sherwood/Woolverton. Prescott’s Microbiology. McGRAW-HILL INTERNATIONAL EDITION.
www.sciencedirect.com/bioremediation.
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Soil microorganisms play important roles in maintaining soil health and fertility. They are involved in nutrient cycling by decomposing organic matter, fixing nitrogen, and carrying out other biochemical processes. The main types of microbes found in soil are bacteria, actinomycetes, fungi, algae, and protozoa. Soil microbes affect soil structure, plant growth, and carry out important processes like nitrogen fixation, nutrient availability, and degradation of pollutants. However, human activities like agricultural practices, urbanization, and climate change threaten soil microbes by reducing organic matter, increasing salinity, and introducing pollutants. Proper management is needed to protect these vital soil microorganisms.
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This document summarizes microbial degradation of various xenobiotics and pollutants. It discusses how microbes like bacteria, fungi and actinomycetes are able to degrade compounds like hydrocarbons, PAHs, pesticides, dyes and other xenobiotics. The microbes produce enzymes that allow them to use these compounds as carbon and energy sources and breakdown the compounds into simpler molecules like carbon dioxide and water.
Phosphate solubilizers
This document discusses plant growth promoting rhizobacteria (PGPR) and their ability to solubilize inorganic phosphate. Some key points:
- PGPR are bacteria that live in the rhizosphere and provide benefits to plants. An important function is solubilizing insoluble phosphate minerals making phosphorus available for plant uptake.
- Common insoluble phosphates include tricalcium phosphate, dicalcium phosphate, and hydroxyapatite. Bacteria secrete organic acids like lactic acid and acetic acid to solubilize these minerals.
- Successful phosphate solubilizing bacteria include species from Bacillus, Pseudomonas, and Rhizobium genera. Screening methods involve checking for clearing zones
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Bio mining uses microorganisms like bacteria and fungi to extract metals from ores. It involves two main processes: bioleaching and biooxidation. Bioleaching involves dumping low-grade ore into a heap and soaking it with acid and bacteria, which degrade the ore and release minerals into fluid. This technique is commonly used to extract gold, copper, nickel, zinc, uranium, and silver. The most common microbes used are Thiobacillus and Leptospirillium.
Bioremediation1.pdf
This document summarizes biodegradation and bioremediation. It defines biodegradation as the breakdown of organic matter by microorganisms like bacteria and fungi. Bioremediation uses these microorganisms to remove pollutants from contaminated sites. The mechanism of biodegradation involves three stages: biodeterioration, biofragmentation, and assimilation. Biodegradation can occur aerobically, in the presence of oxygen, or anaerobically, in the absence of oxygen. Bioremediation has advantages like completely destroying contaminants on-site, but is limited to biodegradable compounds and can take a long time.
Biodegradation
Biodegradation is the breakdown of materials by microorganisms like bacteria and fungi. It is distinct from but related to composting. Biodegradable materials like plant and animal matter can be broken down aerobically with oxygen or anaerobically without oxygen. Factors like moisture, oxygen, temperature affect the rate of biodegradation. Many plastics are now made to be biodegradable by incorporating materials like cornstarch. Bioremediation uses organisms like fungi and bacteria to remove pollutants from contaminated sites, either through natural biodegradation or by adding nutrients or microbes to stimulate the process. It has advantages over traditional chemical or physical treatment methods.
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Environmental biotechnology
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A biodegradable product can dissolve easily in the environment without destroying nature. It’s the opposite of plastic and Styrofoam, which harm the environment.
The meaning of biodegradation is breaking down of organic substances by the help of other living organisms such as bacteria and microbes.
History:
The first known use of the word in biological text was in 1961 when employed to describe the breakdown of material into the base components of carbon, hydrogen, and oxygen by microorganisms .
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Introduction
Type of pesticides
Advantage & disadvantages of pesticides
Degradation of pesticide
Microbial degradation of pesticides
Mode of microbial metabolism of pesticides
Strategies for biodegradation
Approaches for biodegradation of pesticide
Chemical reaction leading biodegradation of pesticide
Metabolism of pesticides by MO
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3. This helps maintain the organisms in suspension and provides conditions for optimum growth, such as gas-liquid contact and mixing, while minimizing shear stress on the cells.
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•Introduction of bioremediation: Bioremediation refers to the process of using microorganisms to remove the environmental pollutants i.e. toxic wastes found in soil, water, air etc.
•In situ bioremediation:
It involves a direct approach for the microbial
degradation of xenobiotics at the sites of pollution
(soil, ground water).
•Types of in situ bioremediation:
Natural attenuation.
Engineered in situ bioremediation.
- Bioventing, biosparging, bioslurping,
phytoremediation.
•Ex situ bioremediation:
Waste or toxic pollutants can be collected from the polluted sites and bioremediation can be carried out at a designated place or site.
• Types of ex situ bioremediation
Land farming, windrow, biopiles, bioreactors.
•Microorganisms use in bioremediation:
A number of naturally occurring marine microbes
such as Pseudomonas sp. is capable of degrading oil and other hydrocarbons.
•Factors affecting bioremediation:
Nutrient availability, moisture content, pH, temperature, contaminant availability.
•References:
Satyanarayana U. Biotechnology. BOOKS AND ALLIED (P) Ltd.
Sharma P.D. Environmental Microbiology. RASTOGI PUBLICATIONS.
Gupta P.K. Biotechnology and Genomics. RASTOGI PUBLICATIONS.
Dubey R.C. A Textbook of Biotechnology. S Chand And Company Ltd.
Dubey R.C. A Textbook of Microbiology. S Chand And Company Ltd.
Willey/Sherwood/Woolverton. Prescott’s Microbiology. McGRAW-HILL INTERNATIONAL EDITION.
www.sciencedirect.com/bioremediation.
What is biosorption
Biosorption is the process by which inactive microbial biomass binds and concentrates heavy metals from aqueous solutions. The cell walls of certain algae, fungi and bacteria are responsible for this phenomenon. It has advantages over conventional treatment methods like low cost and high efficiency. Biosorption mechanisms can be metabolism-dependent or non-metabolism dependent, and removal can occur extracellularly, on the cell surface, or intracellularly. Factors like pH, biomass concentration, and interaction of metal ions affect biosorption. Common biosorbents include bacteria, fungi, algae and seaweed. Biosorption has environmental and industrial uses such as filtering wastewater and recovering metals.
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This document discusses bioremediation techniques for oil spill cleanup. It begins by defining bioremediation as using microorganisms like bacteria and fungi to break down pollutants like oil. Several methods are described to enhance bioremediation including adding nutrients, oxygen, or microbes. The Exxon Valdez oil spill is discussed as a case study where techniques like controlled burns, dispersants, and fertilizer-enhanced bioremediation were used. Overall, the document provides an overview of bioremediation and how it can be applied to effectively treat oil spills in the environment.
Bioremediation
This document discusses bioremediation, which uses microorganisms like bacteria and fungi to degrade environmental pollutants. It defines bioremediation and describes how it works by stimulating existing microbes or adding specialized microbes. The key factors for effective bioremediation like nutrients, water, oxygen and temperature are outlined. In-situ and ex-situ bioremediation methods are compared, and applications to treat soil, groundwater, marine spills and air are reviewed. Advantages like low cost are balanced with longer timescales. Related technologies like phytoremediation and bioventing are also mentioned.
Soil microbiology
Soil microorganisms play important roles in maintaining soil health and fertility. They are involved in nutrient cycling by decomposing organic matter, fixing nitrogen, and carrying out other biochemical processes. The main types of microbes found in soil are bacteria, actinomycetes, fungi, algae, and protozoa. Soil microbes affect soil structure, plant growth, and carry out important processes like nitrogen fixation, nutrient availability, and degradation of pollutants. However, human activities like agricultural practices, urbanization, and climate change threaten soil microbes by reducing organic matter, increasing salinity, and introducing pollutants. Proper management is needed to protect these vital soil microorganisms.
Microbial degradation of xenobiotics
This document summarizes microbial degradation of various xenobiotics and pollutants. It discusses how microbes like bacteria, fungi and actinomycetes are able to degrade compounds like hydrocarbons, PAHs, pesticides, dyes and other xenobiotics. The microbes produce enzymes that allow them to use these compounds as carbon and energy sources and breakdown the compounds into simpler molecules like carbon dioxide and water.
Phosphate solubilizers
This document discusses plant growth promoting rhizobacteria (PGPR) and their ability to solubilize inorganic phosphate. Some key points:
- PGPR are bacteria that live in the rhizosphere and provide benefits to plants. An important function is solubilizing insoluble phosphate minerals making phosphorus available for plant uptake.
- Common insoluble phosphates include tricalcium phosphate, dicalcium phosphate, and hydroxyapatite. Bacteria secrete organic acids like lactic acid and acetic acid to solubilize these minerals.
- Successful phosphate solubilizing bacteria include species from Bacillus, Pseudomonas, and Rhizobium genera. Screening methods involve checking for clearing zones
Downstream processing
Downstream processing refers to the stages involved after fermentation or bioconversion, including separation, purification, and packaging of the product. The key stages are removal of insolubles through filtration, centrifugation or flocculation, product isolation using techniques like liquid-liquid extraction or adsorption, product purification using chromatography or crystallization, and product polishing which prepares the product for packaging and storage. Downstream processing aims to recover and purify the target product from the fermentation or reaction broth.
Biomining
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This document summarizes biodegradation and bioremediation. It defines biodegradation as the breakdown of organic matter by microorganisms like bacteria and fungi. Bioremediation uses these microorganisms to remove pollutants from contaminated sites. The mechanism of biodegradation involves three stages: biodeterioration, biofragmentation, and assimilation. Biodegradation can occur aerobically, in the presence of oxygen, or anaerobically, in the absence of oxygen. Bioremediation has advantages like completely destroying contaminants on-site, but is limited to biodegradable compounds and can take a long time.
Biodegradation
Biodegradation is the breakdown of materials by microorganisms like bacteria and fungi. It is distinct from but related to composting. Biodegradable materials like plant and animal matter can be broken down aerobically with oxygen or anaerobically without oxygen. Factors like moisture, oxygen, temperature affect the rate of biodegradation. Many plastics are now made to be biodegradable by incorporating materials like cornstarch. Bioremediation uses organisms like fungi and bacteria to remove pollutants from contaminated sites, either through natural biodegradation or by adding nutrients or microbes to stimulate the process. It has advantages over traditional chemical or physical treatment methods.
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This document discusses bioremediation and the degradation of pollutants by microorganisms. It defines bioremediation as the process of using microbes to biologically degrade organic wastes under controlled conditions. It describes how microbes possess enzymes that allow them to break down environmental contaminants. The document outlines different bioremediation methods including biostimulation, bioattenuation, bioaugmentation, bioventing, and biopiles. It discusses factors that affect microbial bioremediation and concludes that bioremediation is an attractive option for cleaning polluted environments, though its effectiveness depends on environmental conditions that support microbial growth.
Bioremidiation
Water pollution adversely affects aquatic life. Fishes are particularly impacted and die from pesticide pollution from nearby farms. Large quantities of untreated wastes from leather and other industries also pollute water bodies. Sewage discharge near coasts can poison shellfish and make swimming unsafe. Bioremediation uses microorganisms to break down pollutants into less toxic forms and helps clean contaminated ponds, soils and water. It has benefits over other remediation methods like being natural, lower cost, and less disruptive to the environment. Both in situ and ex situ bioremediation can be used to treat different types of contamination.
Bioremediation
The document discusses biodegradation and bioremediation. It defines biodegradation as nature's way of breaking down organic matter using microorganisms. Biodegradation can occur aerobically or anaerobically. Bioremediation uses microorganisms to transform hazardous contaminants into less harmful byproducts and is used to treat contaminated sites. There are two types of bioremediation - in situ, which treats contamination on site, and ex situ, which physically extracts contaminated media. Ex situ techniques include solid phase methods like landfarming and biopiling, and slurry phase treatment in bioreactors. Bioremediation has advantages of being relatively low cost and having general public acceptance.
biodegradable plastic.pptx
The document discusses biodegradable plastics and polyhydroxyalkanoates (PHAs). It notes that traditional plastics are not biodegradable and accumulate in landfills, causing environmental issues. PHAs are introduced as a potential replacement as they are naturally produced and biodegraded by microorganisms. The document provides details on the production of PHAs by bacteria, their properties, and their biodegradability, establishing PHAs as a sustainable and biodegradable alternative to conventional plastics.
BIOREMEDIATION PHYTOREMEDIATION (1).pptx
This document provides an overview of bioremediation and phytoremediation. It defines bioremediation as using biological organisms like microbes and plants to treat contaminated soil and water. The document discusses the history of bioremediation and categorizes different bioremediation techniques. It also outlines the pros and cons of various in-situ and ex-situ bioremediation methods like bioventing, bioaugmentation, biostimulation, biosparging, land farming and composting. Finally, it introduces the concept of phytoremediation and notes that it involves using plants to remediate environmental contaminants.
Microbes involved in aerobic and anaerobic process in nature
This document provides an overview of microbes involved in aerobic and anaerobic processes in nature. It discusses bioremediation, the bioremediation cycle, biodegradation, and the roles of various microorganisms. Bioremediation uses microorganisms to break down environmental pollutants. The bioremediation cycle involves microbes consuming contaminants and converting them into harmless substances. Biodegradation is the breakdown of organic matter by microbes. Various microbes are involved in aerobic and anaerobic biodegradation processes to break down contaminants.
MSc env micro biodegradation 4.pptx
This document discusses various types of bioremediation technologies used to degrade hazardous contaminants. It describes bioremediation as using microorganisms like bacteria and fungi to break down contaminants into less hazardous substances. The document outlines in situ and ex situ bioremediation approaches and divides bioremediation into intrinsic, enhanced, biostimulation, and bioaugmentation categories. It provides details on various enhanced in situ bioremediation techniques for soils, groundwater, and saturated zones including aerobic bioventing, cometabolic bioventing, anaerobic bioventing, and anaerobic reductive dechlorination.
Bioremediation lecture.pptx
The document discusses various methods of bioremediation and biodegradation to remediate contaminated soil and groundwater. It defines bioremediation as using biological organisms such as bacteria and fungi to solve environmental problems through technological innovation. Biodegradation is the natural breakdown of materials by microorganisms. The document then describes various in situ and ex situ bioremediation techniques in detail, including bioventing, biosparging, bioslurping, phytoremediation, land farming, biopiles, and windrows. The key factors in selecting a bioremediation method are the contaminants present, their accessibility to microbes, and any environmental conditions that could inhibit microbial activity.
Bioremediation ppt.pptx
This document discusses bioremediation of soil and water contaminated by hydrocarbons and surfactants. It describes hydrocarbon and surfactant contamination sources and various bioremediation methods like bioaugmentation, biostimulation, and land farming that can be used. Advantages of bioremediation include using natural microbial processes while limitations include requirements for suitable microbial populations and environmental conditions. The document also discusses biofilms - microbial communities attached to surfaces, how they form, properties like antibiotic resistance, and challenges they pose for water treatment. Methods to dissolve biofilms like enzymatic treatments are also covered.
Bioremediation by shoyeb, GEBT, JUST
This document provides an overview of bioremediation presented by Md. Shoyeb. It defines bioremediation as using organisms or their enzymes to return polluted environments to their original condition. The mechanisms, principles, strategies (in situ and ex situ), types (bioventing, biosparging, bioaugmentation), advantages and disadvantages are summarized. Key contaminants amenable to bioremediation are identified along with persistent pollutants that are difficult to degrade.
Biodegradation of Environmental Pollutants
The USEPA defines biodegradation as a process by which microbial organisms transform or alter (through metabolic or enzymatic action) the structure of chemicals introduced into the environment.
According to the definition by the International Union of Pure and Applied Chemistry, the term biodegradation is “Breakdown of a substance catalyzed by enzymes in vitro or in vivo.
The term is often used in relation to ecology, waste management, biomedicine, and the natural environment (bioremediation) and is now commonly associated with environmentally friendly products that are capable of decomposing back into natural elements.
Biodegradable matter is generally organic material such as plant and animal matter and other substances originating from living organisms, or artificial materials that are similar enough to plant and animal matter to be put to use by microorganisms.
Biodegradation of Organic Compound and Plastic Materials
This document discusses biodegradation of organic compounds and plastics. It defines biodegradation as the breakdown of materials by microorganisms like bacteria and fungi. Biodegradation of organic compounds like hydrocarbons from oil spills involves many microorganisms and factors like temperature, nutrients, and surface area affect the rate. Plastics biodegradation depends on chemical structure and environmental conditions. Common microbes involved include fungi, bacteria and yeasts which secrete enzymes to break down polymers before absorbing fragments.
Biodegradation and bioremediation of xenobiotics
Biodegradation or biological degradation is the phenomenon of biological transformation of organic compounds by living organisms, particularly the microorganisms.
Biodegradation basically involves the conversion of complex organic molecules to simpler (and mostly non-toxic) ones. The term biotransformation is used for incomplete biodegradation of organic compounds involving one or a few reactions. Biotransformation is employed for the synthesis of commercially important products by microorganisms.
Bioremediation refers to the process of using microorganisms to remove the environmental pollutants i.e. the toxic wastes found in soil, water, air etc. The microbes serve as scavengers in bioremediation. The removal of organic wastes by microbes for environmental clean-up is the essence of bioremediation. The other names used (by some authors) for bioremediation are bio-treatment, bio-reclamation and bio-restoration.
It is rather difficult to show any distinction between biodegradation and bioremediation. Further, in biotechnology, most of the reactions of biodegradation/bioremediation involve xenobiotic.
Bioremediation
This document provides information about bioremediation. It begins with an introduction defining bioremediation as using microorganisms to degrade hazardous chemicals into less toxic forms. It then discusses the types of microorganisms involved, including Pseudomonas genus and Xenobiotics-degrading microorganisms. Several examples of pollutants and degrading microorganisms are given. The mechanisms of bioremediation include aerobic and anaerobic transformations such as respiration, fermentation, and methane fermentation. Factors affecting bioremediation like moisture, nutrients, oxygen levels, pH, temperature, and pollutant characteristics are outlined. Methods of bioremediation include in-situ and ex-situ techniques
Bioremediation.ppt
The document discusses bioremediation, which uses microorganisms like bacteria and fungi to break down environmental pollutants and clean contaminated sites. It can be done through microbial remediation using various microbes, or phytoremediation which uses plants. Bioremediation aims to reduce pollutant levels to safe standards. It works by stimulating microbial growth to consume contaminants as food and convert them into harmless gases. While effective, it has limitations like unknown degradation byproducts and potential for mobilizing or bioaccumulating contaminants.
bioremediation for hazardous wastes
The document discusses bioremediation as a method for treating hazardous wastes using biological organisms. It describes how microorganisms can break down and degrade many types of environmental contaminants through metabolic processes. Bioremediation is beneficial as it uses naturally occurring microbes to detoxify pollutants in an inexpensive and environmentally friendly manner. The document outlines different bioremediation techniques including in situ and ex situ methods and notes the optimal conditions required to maximize the effectiveness of bioremediation in remediating sites contaminated with chemicals, oils, and other organic wastes.
Biodegradation
This document discusses biodegradation, which is the breakdown of organic substances by living organisms. It provides an introduction to biodegradation and lists some biodegradable products. The mechanisms of aerobic and anaerobic biodegradation are explained. Factors that affect the rate of biodegradation include temperature, moisture, nutrient availability and the type of material. Biodegradable plastics are made from materials like cornstarch that allow them to break down naturally. The advantages of biodegradable products include less pollution and being more environmentally friendly.
microbial_remediation_of_pollutants.pptx
Bioremediation uses microorganisms such as bacteria and fungi to degrade environmental pollutants into less toxic or non-toxic substances. It can occur naturally or be induced through bioaugmentation, which involves adding specific microorganisms, or biostimulation, which provides nutrients to promote the growth of indigenous microbes. Effective bioremediation requires the microbes, pollutants, and environmental conditions to allow the microbes to break down pollutants through their metabolic processes.
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Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
Buildings: Selection of site for Buildings, Layout of Building Plan, Types of buildings, Plinth area, carpet area, floor space index, Introduction to building byelaws, concept of sun light & ventilation. Components of Buildings & their functions, Basic concept of R.C.C., Introduction to types of foundation
Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
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Text Books:
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Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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accelerated due to factors such as agriculture and urbanization. Information regarding land use and
cover is essential for various planning and management tasks related to the Earth's surface,
providing crucial environmental data for scientific, resource management, policy purposes, and
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Accurate understanding of land use and cover is imperative for the development planning
of any area. Consequently, a wide range of professionals, including earth system scientists, land
and water managers, and urban planners, are interested in obtaining data on land use and cover
changes, conversion trends, and other related patterns. The spatial dimensions of land use and
cover support policymakers and scientists in making well-informed decisions, as alterations in
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Remote Sensing and Geographic Information Systems
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Changes in vegetation cover refer to variations in the distribution, composition, and overall
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The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
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Biodegradation
- 2. INTRODUCTION Process by which substances are broken down by the environmental effects and by the living organisms. Organic material can be degraded by aerobically or an anaerobically. Biodegradable matter is generally organic material that provides nutrition for microorganisms.
- 3. DEFINATION Biodegradation is the disintegration of materials by bacteria, fungi, or other biological means. The term is often used in relation to: biomedicine, waste management, ecology, and the bioremediation of the natural environment.
- 5. HISTORY The first known use of the world in biological text was in 1961 when employed to describe the breakdown of material into the base components of carbon, hydrogen and oxygen by microorganisms Now biodegradable is commonly associated with environmentally friendly product that are part of the earth’s innate cycle and capable of decomposing back into natural environments.
- 6. TYPES OF BIODEGRADION Mineralization or Bio mineralization Mineralization or Bio mineralization – Microorganisms convert organic waste into chemical inorganic matter such as water and carbon dioxide. Examples include the shells of invertebrates.
- 7. Biotransformation Biotransformation – Part of the organic matter is degraded, remaining part is converted into smaller chain organic compounds. example : fermentation of sugar into ethanol.
- 8. MICROBIAL DEGRADATION Aerobic – Degradation with the presence of oxygen. Anaerobic – In the absence of oxygen. In situ – Degradation in their original place. Ex situ - Outside of their environment.
- 11. FACTORS AFFECTING BIODEGRADATION Composition of microbial community Presence of oxygen and nutrient Abiotic factors - Temperature, pH, salinity, Presence of light and water Predation synergism
- 12. BIODEGRADABLE PLASTIC Plastic that is able to break down when discarded either in dumps or sunlight It is made by using additives which help the plastic to degrade. It has been treated to be easily breakdown by microorganisms
- 14. ACCLIMATION Prior to the degradation of many organic compounds, a period is noted in which no destruction of chemical is evident. This time interval is designated as acclimation period It is also known as adaption or lag period. Possibility of an undesirable effect to humans, animals, and plants is increased.
- 15. Factors affecting acclimation Temperature pH Aeration Concentration of nitrogen Concentration of phosphorus Concentration of the compound
- 16. SORPTION Some substances appear to be non biodegradable under all circumstances. Example – various synthetic polymers Reasons for sorption 1. High concentration of toxic substances 2. Need of nutrient 3. Low concentration of substrate etc
- 17. ADVANTAGES OF BIODEGRADATION Can be does on site Permanently eliminate waste Is cheaper Minimizes the destruction Eliminates long term liability Can be coupled with other treatment techniques Eliminates transportation cost.
- 18. DISADVANTAGES OF BIODEGRADATION Some chemical cannot be degraded Unknown by-products can be produced Toxicity of contaminants can be a problem Extensive maintaining is needed Site specific requirements can affect applicability
- 19. CONCLUSION We need to save our earth and environment from pollution Biodegradation is one of the best way that many counties use to protect environment from harmful material, waste material. REDUCE REUSE REPAIR RECYCLE
- 20. THANK YOU !