The elimination of biologic problems due to heavy metals contaminants in wastewater by biosurfactant

Wastewater pollution has always been a major problem throughout the world. One of these pollutants is heavy metals that badly effect human health. Some heavy metals are toxic and the cause of many human diseases: lung cancer, nervous, abnormal baby, etc. Many techniques for removal heavy metals in wastewater have been used in the world that among them, the conventional physicochemical methods are applied widely, such as precipitation, absorption, ion exchange and complex formation, etc. Despite effective processes, these methods are costly because of high cost of equipment and materials. The usage of metal chelating agents has been proposed but they are not environmentally compatible. An alternative compound for removal of metals from wastewater is biosurfactant, which is a nontoxic microbial surfactant known for its ability to complex metals. These compounds are biodegradable molecules and therefore, utilization of them can protect the environment. This research investigates the role of biosurfactants to eliminate the toxicmetals.

کلیدواژه ها:

Biosurfactant ، Heavy metal ، Wastewater