title: [Electricity generation of surplus sludge microbial fuel cells enhanced by additional enzyme].
abstract: In this paper the feasibility of enhanced electricity generation of microbial fuel cell fed surplus sludge by additional enzymes (neutral protease and alpha-amylase) was discussed. The effect of dosage of additional enzyme on characteristics of electricity generation of the surplus sludge microbial fuel cell (SSMFC) and the reduction of surplus sludge were investigated. The results indicated that the maximum output power destiny of the group of experiment was higher than that of control under the same condition. Moreover, the maximum output power density, coulomb efficiency, efficiency of reducing TCOD, efficiency of reducing TSS and efficiency of reducing VSS reached up to 507 W x m(-2) (700 mW x m(-2)), 3.98% (5.11%), 88.31% (94.09%), 83.18% (98.02%) and 89.03% (98.80%) respectively for protease (alpha-amylase) at the dosage of 10 mg x g(-1). This study demonstrated that additional enzyme greatly enhanced the electricity generation of MFC with simultaneous accomplishments of sludge treatment, providing a novel approach for the practical application of microbial fuel cell.
authors.affiliation: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China. zhxyyh@yeah.net
authors.forename: Hui
authors.initials: H
authors.lastname: Yang
authors.forename: Zhi-Hu
authors.initials: ZH
authors.lastname: Liu
authors.forename: Xiao-Ming
authors.initials: XM
authors.lastname: Li
authors.forename: Qi
authors.initials: Q
authors.lastname: Yang
authors.forename: Li
authors.initials: L
authors.lastname: Fang
authors.forename: Hua-Jun
authors.initials: HJ
authors.lastname: Huang
authors.forename: Guang-Ming
authors.initials: GM
authors.lastname: Zeng
authors.forename: Shuo
authors.initials: S
authors.lastname: Li
mesh_terms: D001674:Bioelectric Energy Sources; D004560:Electricity; D004566:Electrodes; D010447:Peptide Hydrolases / Q000378:metabolism* / Q000494:pharmacology; D012722:Sewage / Q000382:microbiology*; D014865:Waste Disposal, Fluid / Q000379:methods; D000516:alpha-Amylases / Q000378:metabolism* / Q000494:pharmacology
chemical_list: D012722:Sewage; D000516:alpha-Amylases; D010447:Peptide Hydrolases