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Microbial Exopolysaccharide for Heavy Metal Sequestration
Bacterial extracellular polysaccharides (EPS) are produced through fermentation using Rhizobium sp., extracted and then collected on a dry basis. The EPS are then used for many innovative applications in the bioremediation of toxic heavy metals such as cadmium, lead, mercury, copper, manganese, and nickel. The removal of toxic heavy metals from actual metal-containing industrial wastewater collected from the factories around Laguna de Bay has been done in the laboratory using immobilized EPS system. The principle of metal removal lies in the ionic attraction of metal cation to the anionic binding sites of the polysaccharides. This technology can provide an effective yet cheap and environmentally-friendly alternative to remove toxic heavy metals from wastewater.
Category:
Specialty product
Patent Type:
Patent
Patent Status:
Public Domain

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