title: Electro-biocatalytic treatment of petroleum refinery wastewater using microbial fuel cell (MFC) in continuous mode operation.
abstract: Refinery wastewater (RW) treatment in microbial fuel cell (MFC) was studied in batch mode operation followed by continuous mode operation with 8h and 16h hydraulic retention time (HRT). The MFC performance was evaluated in terms of power density, organics removal, specific contaminants (oil & grease, phenol and sulfide) removal and energy conversion efficiency with respect to operation mode. Higher power density of 225±1.4mW/m2was observed during continuous mode operation with 16h HRT along with a substrate degradation of 84.4±0.8% including the 95±0.6 of oil content. The columbic efficiency during this operation was about 2±0.8% and the projected power yield was 340±20kWh/kg CODR/day. Batch mode operation also showed good substrate degradation (81±1.8%) but took longer HRT which resulted in significantly low substrate degradation rate (0.036±0.002kgCODR/m3-day) over continuous mode operation (1.05±0.01kgCODR/m3-day). Overall, current study depicted the possibility of utilizing RW as substrate in MFC for power generation along with its treatment.
authors.affiliation: Industrial Biotechnology Department, Research and Development Center, Indian Oil Corporation Limited, Sector-13, Faridabad, Haryana 121007, India.
authors.forename: Sandipam
authors.initials: S
authors.lastname: Srikanth
authors.affiliation: Industrial Biotechnology Department, Research and Development Center, Indian Oil Corporation Limited, Sector-13, Faridabad, Haryana 121007, India. Electronic address: upretim@indianoil.in.
authors.forename: Manoj
authors.initials: M
authors.lastname: Kumar
authors.affiliation: Industrial Biotechnology Department, Research and Development Center, Indian Oil Corporation Limited, Sector-13, Faridabad, Haryana 121007, India.
authors.forename: Dheer
authors.initials: D
authors.lastname: Singh
authors.affiliation: Industrial Biotechnology Department, Research and Development Center, Indian Oil Corporation Limited, Sector-13, Faridabad, Haryana 121007, India.
authors.forename: M P
authors.initials: MP
authors.lastname: Singh
authors.affiliation: Industrial Biotechnology Department, Research and Development Center, Indian Oil Corporation Limited, Sector-13, Faridabad, Haryana 121007, India.
authors.forename: B P
authors.initials: BP
authors.lastname: Das
mesh_terms: D001674:Bioelectric Energy Sources; D055664:Electrochemical Techniques; D010578:Petroleum / Q000032:analysis*; D062065:Wastewater / Q000737:chemistry*
chemical_list: D010578:Petroleum; D062065:Wastewater
keywords: Bioelectrochemical system (BES); Hydrocarbon treatment; Oil degradation; Organic load; Phenol degradation; Sulfide removal