Improvement in treatment of soak liquor by combining electro-oxidation and biodegradation. Issue 53 (13th May 2016)

• Record Type: Journal Article
• Authors: Rajeswari, S.; Vidhya, S.; Sundarapandiyan, S.; Saravanan, P.; Ponmariappan, S.; Vidya, K.
• Is Part Of: RSC advances. Volume 6:Issue 53(2016)
• Page Start: 47220
• Page End: 47228
• Publication Date: 2016-05-13
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra28076a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A combined process involving electro-oxidation and biodegradation by halophilic bacteria was applied to treat wastewater effectively for discharge. Abstract : Soak liquor generated from the leather processing industry contains high organic load, making it a challenge to treat it efficiently. A combined process involving electro-oxidation and biodegradation by halophilic bacteria was applied to treat wastewater effectively for discharge. Electrolysis was performed prior to biological treatment in an electrochemical reactor at a current density of 0.012 A cm −2 for a period of 30 minutes. Titanium Substrate Insoluble Anode (TSIA) was used as an anode and titanium mesh was used as a cathode. Biological degradation was carried out with two isolated microbial strains at pH 6. The combination of electro-oxidation and biodegradation was recorded as a good technique in terms of COD (Chemical Oxygen Demand), BOD (Biological Oxygen Demand) and TKN (Total Kjeldahl Nitrogen) removal efficiency with values of 95%, 85%, and 88% respectively. The present study claims that the integrated process gives better performance for the reduction of COD when compared to previous studies.