• Ankita Kharat
• Suman Ganger
• Shweta Patil

Domestic sewage contains both organic and inorganic compounds. It also contains products of decomposition like ammonia, hydrogen sulphide, methane and carbon dioxide. The chemical composition, pH, low dissolved oxygen and high load of pathogenic bacteria lead to major water pollution. Around 2100 million litre a day of waste water sewage is released into the creeks of the Arabian Sea. Hence, there is a dire need to use innovative and effective methods which can be used at source to handle the waste water. Bacteria produce diverse biopolymers with varied chemical properties via utilization of simple and complex substrates. These extracellular polymeric substances (EPS) producing organisms indigenously play an important role in waste water treatment. These find immediate applications in sewage treatment and biofloculation. In this study 12 EPS producing bacteria were screened from various sources and selected based on EPS producing capacity on solid media. Acinetobacter baumannii strain VESASC-ASC gave a promising EPS production of 0.45 g %. Media was optimized based on physiochemical and operational media parameters for maximum EPS production. The EPS was partially characterized by HPTLC. The extracted EPS showed antibacterial activity against 10 test lab isolates. The EPS producers were found to be promising in treatment of domestic sewage sample. 70%, 99%, 99.7% reduction in COD, BOD and coliform count respectively was noted

Exopoysaccharide, Acinetobacter baumannii, sewage treatment, BOD, COD, coliform.

"Extraction of exopolysaccharide from Acinetobacter baumannii strain VESASC-ASC and its application in sewage treatment ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.621-629, May-2019, Available :http://www.jetir.org/papers/JETIR1905H98.pdf

"Extraction of exopolysaccharide from Acinetobacter baumannii strain VESASC-ASC and its application in sewage treatment ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp621-629, May-2019, Available at : http://www.jetir.org/papers/JETIR1905H98.pdf