Efficacy of Microalgae on the Removal of Pollutants from Wastewater

Expansion of urban populations, increased coverage of domestic water supply and sewerage give rise to greater quantities of municipal wastewater. With the current emphasis on environmental health and water pollution issues, there is an increasing discharge of waste water in developing countries. Present technologies in developing countries for treating waste water are not sufficient and cost effective. Chlorella vulgaris is a form of green microalgae efficient for pond-based wastewater treatment, rather than bacterial strains for their ability to flocculate Chlorella vulgaris in a culture suspension. A microbial flocculent would be significantly cheaper than traditional flocculants and is believed to be less potentially toxic than synthetic polymers which are currently available. Chlorella vulgaris absorbed more pollutant compared to Chlamydomonas sp., which reveals that Chlorella vulgaris is efficient than Chlamydomonas sp., for treating waste water.