Bioremediation of Heavy Metals by Chlorella species

Abstract According to the United Nation, the Sustainable Development Goals (SDG) goal 6 and goal 14 seeks to ensure the sustainable management of water present over the earth for all. Water quality analysis becomes a huge requirement of today’s scenario due to the impurities present in water which harms the livelihood of society. Some of the hazardous impurities like heavy metals destruct the surroundings. In this study, the removal of heavy metals from wastewater with an efficient technique i.e. Bioremediation is represented with the analysis and evaluation of results recorded in the laboratory testing. Two samples were taken from two different sites which are being analyzed with the implementation methodology represented in the present article. Two algae Chlorella Minutissima & Chlorella Singularis were evaluated based on their impurity removal efficiency as well as analysis of the biological treatment method over other chemical methods have been examined. The results were analyzed and represented in the form of a table as well and the variation in the value of WQP is shown in the form of graphs. The observation shows that the variation in WQP after the integration of algae lies under the permissible limit. Alkalinity is estimated in the range of 20 – 40 mg/l, Hardness lies in the range of 0 – 60mg/l, and pH comes approximately in a range of 6.5 – 8. Based on the evaluation, the framework is generated for the efficient technique used for heavy metal removal.