www.ijcrt.org © 2017 IJCRT | International Conference Proceeding ICGTETM Dec 2017 | ISSN: 2320-2882 IJCRT Publish Paper record is available at DOI: http://doi.one/10.1727/IJCRT.17169 IJCRTICGT049 International Journal of Creative Research Thoughts (IJCRT) www.ijcrt.org 390 A Review on Treatment of Sewage Water & Biogas Purification by Algae Dr. S. A. Thakur 1 , Miss. Payal Bhautik 2 , Mr. V.P. Sangore 1 , Mr. Kuldeep Singh 3 1 Assistant Professor, Department of Chemical Engineering, SSBT’s College of Engineering and Technology, Bhambori, Jalgaon 2 Ph.D. Scholar Department of Chemical Engineering, Laxminarayan Institute of Technology, RTMNU Nagpur 3 M.Sc. Chemistry, Dr. C. V. Raman University, Billaspur, Chhattisgarh Abstract Biogas is a developing alternative energy source engendered from the anaerobic digestion of organic matter by bacteria. It is composed primarily of methane and carbon dioxide (CO2) with trace amounts of other toxic compounds, such as hydrogen sulfide (H2S). The presence of CO2 decreases the energy yield from the combustion of biogas. Past studies have utilized extravagant and environmentally deleterious chemicals to purify biogas. This study involves the construction of a biogas purification system that utilizes microalgae to metabolize and abstract impurities from the system as well as gives treatment to sewage waste water. This method has the distinct advantage of being renewable due to the self-propagation of the microalgae. The microalgae are additionally engendering hydrocarbon products that can be utilized as a bio-fuel. Introduction Industrial energy demands are rapidly outpacing the available fossil fuel sources, and the desideratum for alternative energy sources is widely apperceived. Experts have proposed biogas as one of these incipient sources. Biogas is a combustible coalescence of gases engendered from the anaerobic digestion of organic material by a community of microbes. Biogas is naturally engendered in astronomically immense quantities by landfills and waste sewage waste water treatment plants. Because of the wide availability and renewable nature of the organic materials and microbes required for biogas synthesis, biogas is a potentially efficacious and sustainable energy source Biogas:-Biogas typically consists of 45-75% methane, 25-55% carbon dioxide (CO2), and other compounds like hydrogen sulfide (H2S) and ammonia (NH3), ranging from hundreds to a thousand components per million. The methane in biogas is a valuable source of energy, while other components are impurities that pose major impediments to the commercial utilization of biogas. CO2 has no energy yield through combustion and greatly reduces the energy yield per volume of biogas due to its high concentration. H2S is toxic and highly corrosive, often damaging machinery used to convey and engender energy from biogas. Current methods of biogas purification involve chemical or mechanical processes, including chemical scrubbing, chemical adsorption, filters, and membranes. These are sumptuous and often environmentally hazardous due to the nature of the chemicals utilized. Quandaries associated with cost and sustainability averts biogas from becoming a competitive alternative energy source. Biological methods of purifying biogas subsist but are not utilized on an industrial scale.