title: Bioremediation of petroleum wastewater by hyper-phenol tolerant Bacillus cereus: Preliminary studies with laboratory-scale batch process.
abstract: Petroleum wastewater samples from oil refinery and oil exploration site were treated by hyper phenol-tolerant Bacillus cereus (AKG1 and AKG2) in laboratory-scale batch process to assess their bioremediation efficacy. Quality of the treated wastewater samples were analyzed in terms of removal of chemical oxygen demand (COD), total organic carbon (TOC) and ammonium nitrogen content, and improvement of biological oxygen demand (BOD). Adaptation of these bacteria to the toxic environment through structural changes in their cell membranes was also highlighted. Among different combinations, the co-culture of AKG1 and AKG2 showed the best performance in degrading the wastewater samples.
authors.affiliation: a Centre for the Environment , Indian Institute of Technology Guwahati , Guwahati , Assam , India.
authors.forename: Aditi
authors.initials: A
authors.lastname: Banerjee
authors.affiliation: b Department of Chemical Engineering , Indian Institute of Technology Guwahati , Guwahati , Assam , India.
authors.forename: Aloke K
authors.initials: AK
authors.lastname: Ghoshal
mesh_terms: D001407:Bacillus / Q000145:classification* / Q000187:drug effects / Q000502:physiology*; D061249:Batch Cell Culture Techniques / Q000379:methods; D001673:Biodegradation, Environmental; D057919:Biological Oxygen Demand Analysis / Q000379:methods; D019149:Bioreactors / Q000382:microbiology*; D049109:Cell Proliferation / Q000502:physiology; D006841:Hydrocarbons, Aromatic / Q000302:isolation & purification / Q000378:metabolism; D010578:Petroleum / Q000382:microbiology*; D019800:Phenol / Q000008:administration & dosage; D010865:Pilot Projects; D013045:Species Specificity; D062065:Wastewater / Q000382:microbiology*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
chemical_list: D006841:Hydrocarbons, Aromatic; D010578:Petroleum; D019800:Phenol; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Bacillus cereus; biodegradation; biological oxygen demand (BOD); chemical oxygen demand (COD); petroleum wastewater