Biodegradation of Wastewater Contaminants by using microorganisms

The rapidly increasing population and expanding industries causes contamination of water resources to different chemical compounds. Recently many efforts have been made in recycling of the wastewater. Different physical and chemical methods have been developed for the removal of contaminant, especially heavy metals from the wastewater, some of which are economically was expensive and, on the other hand, ecologically, have negative effects on the chemical, physical and biological properties of water. Identification, significance and effects of heavy metals in the ecosystem have led to the development of Biodegradation plans aimed at measuring power of removing contaminants in different organisms.Biodegradation is a process using microorganisms, fungi, green plants and their enzymes to remove the pollutants from natural environment or transform them harmless. Biodegradation has been considered because of its economic and ecologic superiority. Microorganism like Bacteria and fungi have some enzymes causes biologic transformation of heavy metals that is very toxic and harmful for environment and human health into less toxic forms. Microorganism produce oxygenase and peroxidases they could help with the pollutant oxidization and convert them to non-harmful substances.in this review article we study the type of microorganism and their purifications methods that can use as purifier in biodegradation of wastewater.

کلیدواژه ها:

Microorganism ، Biodegradation ، Wastewater ، Enzymes