Aerobic Anaerobic Biodegradation_20090430

Aerobic Anaerobic Biodegradation_20090430 - Aerobic and...

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Aerobic and Anaerobic Biodegradation © ENSO Bottles, LLC ENSO Bottles, LLC ± PO Box 15886 ± Phoenix, AZ 85060 ± TEL: 866-936-3676 Page 1 of 8 This document provides an in depth explanation, detailing the processes of aerobic and anaerobic biodegradation. It is intended for general audiences and will provide the reader with the necessary information to understand what is happening during the biodegradation process. For those interested in the biochemical processes of the microbial organisms this document will provide a high level explanation of the aerobic and anaerobic processes. Biodegradation Biodegradation is the process by which organic substances are broken down into smaller compounds by the enzymes produced by living microbial organisms. The microbial organisms transform the substance through metabolic or enzymatic processes. Biodegradation processes vary greatly, but frequently the final product of the degradation is carbon dioxide or methane. Organic material can be degraded aerobically , with oxygen, or anaerobically , without oxygen. 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. Some microorganisms have the astonishing, naturally occurring, microbial catabolic diversity to degrade, transform or accumulate a huge range of compounds including hydrocarbons (e.g. oil), polychlorinated biphenyls (PCBs), polyaromatic hydrocarbons (PAHs), pharmaceutical substances, radionuclides and metals. Aerobic Biodegradation Aerobic biodegradation is the breakdown of organic contaminants by microorganisms when oxygen is present. More specifically, it refers to occurring or living only in the presence of oxygen; therefore, the chemistry of the system, environment, or organism is characterized by oxidative conditions. Many organic contaminants are rapidly degraded under aerobic conditions by aerobic bacteria called aerobes. Aerobic bacteria (aerobe) have an oxygen based metabolism. Aerobes, in a process known as cellular respiration, use oxygen to oxidize substrates (for example sugars and fats) in order to obtain energy. Before cellular respiration begins, glucose molecules are broken down into two smaller molecules. This happens in the cytoplasm of the aerobes. The smaller molecules then enter a mitochondrion, where aerobic respiration takes place. Oxygen is used in the chemical reactions that break down the small molecules into water and carbon dioxide. The reactions also release energy.
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Aerobic and Anaerobic Biodegradation © ENSO Bottles, LLC ENSO Bottles, LLC ± PO Box 15886 ± Phoenix, AZ 85060 ± TEL: 866-936-3676 Page 2 of 8 Aerobic, unlike anaerobic digestion, does not produce the pungent gases. The aerobic process results in a more complete digestion of waste solids reducing buildup by more than 50% in most cases. The aerobic process also improves the environment of the workers and the animals
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Aerobic Anaerobic Biodegradation_20090430 - Aerobic and...

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