Difference between Soluble and Insoluble Chemical Oxygen Demand (COD)
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Difference between Soluble and Insoluble Chemical Oxygen Demand (COD) COD stands for Chemical Oxygen Demand, which is a measure of the amount of oxygen required to oxidize organic and inorganic substances in water. It is commonly used as an indicator of water pollution and the presence of organic contaminants. Soluble COD refers to the portion of COD that is dissolved in water and can be easily measured using standard analytical methods. These are typically organic compounds that are in solution and can be readily oxidized. Soluble COD is often associated with easily biodegradable organic matter and is more readily treated or removed through biological processes, such as activated sludge treatment or aerobic digestion. Insoluble COD, on the other hand, refers to the portion of COD that is not dissolved in water and exists as suspended solids or particulate matter. These are typically larger organic particles or compounds that are not easily oxidized and may require additional treatme