| Doc (chemistry, Chemical Engineering) |
Article Index for Doc |
Website Links For Doc |
Information AboutDoc (chemistry, Chemical Engineering) |
|
The DOC in marine and freshwater is one of the greatest cycled reservoir of Organic Matter on Earth. The majority of the DOC is caused by different sources, depending on the focused body of water. In general, organic carbon compounds are a result from breakdown processes from higher organic matter such as plants. When water gets in touch with high organic soils, a certain amount of these components can be drained into rivers and lakes as DOC. In oceans, for example, it is assumed that the majority of DOC is partly caused by Bacterioplankton , which releases Exopolymers as a byproduct of essential living processes, into the ambient water. In freshwater lakes and rivers the bulk DOC consists of Humic Acid s from Rotting processes. SIGNIFICANCE DOC causes an increased growth of Microorganism s, as it is a food supplement. Moreover it is an indicator of Organic Loading s to streams, as well as terrestrial processing (e.g., within the soil, forests, and wetlands) of organic matter. In the absence of extensive wetlands, bogs, or swamps, baseflow concentrations of DOC in undisturbed watersheds generally range from approximately 1 to 3 mg carbon/L. Higher concentrations suggest sources of organic pollution such as point sources from Sewage Treatment plant discharges or non-point-source runoff from urban or rural landscapes. The ''biodegradable DOC fraction (BDOC)'' consists of organic molecules that Heterotrophic bacteria can utilize as a source of energy and carbon. Within the context of drinking water quality, some subset of DOC constitutes the precursors of disinfection byproducts, and the BDOC constitutes the nutritional resources that can contribute to biological regrowth within water distribution systems. |
|
|