title: Coupling of anodic biooxidation and cathodic bioelectro-Fenton for enhanced swine wastewater treatment.
abstract: A novel bioelectrochemical reactor with anodic biooxidation coupled to cathodic bioelectro-Fenton was developed for the enhanced treatment of highly concentrated organic wastewater. Using swine wastewater as a model, the anode-cathode coupled system was demonstrated to be both efficient and energy-saving. Without any external energy supply to the system, BOD(5), COD, NH(3)-N and TOC in the wastewater could be greatly reduced at both 1.1g COD L(-1)d(-1) and 4.6g COD L(-1)d(-1) of OLR, with the overall removal rates ranging from 62.2% to 95.7%. Simultaneously, electricity was generated at around 3-8 Wm(-3) of maximum output power density. Based on electron balance calculation, 60-65% of all the electrons produced from anodic biooxidation were consumed in the cathodic bioelectro-Fenton process. This coupled system has a potential for enhanced treatment of high strength wastewater and provides a new way for efficient utilization of the electron generated from biooxidation of organic matters.
authors.affiliation: School of Environment and Energy, The Key Laboratory for Environmental and Urban Sciences, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
authors.forename: Nan
authors.initials: N
authors.lastname: Xu
authors.forename: Shungui
authors.initials: S
authors.lastname: Zhou
authors.forename: Yong
authors.initials: Y
authors.lastname: Yuan
authors.forename: Huan
authors.initials: H
authors.lastname: Qin
authors.forename: Yu
authors.initials: Y
authors.lastname: Zheng
authors.forename: Canwei
authors.initials: C
authors.lastname: Shu
mesh_terms: D000818:Animals; D001674:Bioelectric Energy Sources; D004563:Electrochemistry / Q000295:instrumentation*; D004566:Electrodes; D010084:Oxidation-Reduction; D013552:Swine; D014873:Water Pollutants
chemical_list: D014873:Water Pollutants