title: Biohydrogen production from food waste hydrolysate using continuous mixed immobilized sludge reactors.
abstract: A continuous mixed immobilized sludge reactor (CMISR) using activated carbon as support carrier for dark fermentative hydrogen production from enzymatic hydrolyzed food waste was developed. The effects of immobilized sludge packing ratio (10-20%, v/v) and substrate loading rate (OLR) (8-40kg/m(3)/d) on biohydrogen production were examined, respectively. The hydrogen production rates (HPRs) with packing ratio of 15% were significantly higher than the results obtained from packing ratio of 10% and 20%. The best HPR of 353.9ml/h/L was obtained at the condition of packing ratio=15% and OLR=40kg/m(3)/d. The Minitab was used to elicit the effects of OLR and packing ratio on HPR (Y) which could be expressed as Y=5.31 OLR+296 packing ratio+40.3 (p=0.003). However, the highest hydrogen yield (85.6ml/g food waste) was happened at OLR of 16kg/m(3)/d because of H2 partial pressure and oxidization/reduction of NADH.
authors.affiliation: College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Han
authors.affiliation: Department of Endocrinology, The First Hospital of Harbin, Harbin 150001, China.
authors.forename: Da Na
authors.initials: DN
authors.lastname: Liu
authors.affiliation: College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
authors.forename: Yi Wen
authors.initials: YW
authors.lastname: Shi
authors.affiliation: College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China. Electronic address: hanwei1982@hdu.edu.cn.
authors.forename: Jun Hong
authors.initials: JH
authors.lastname: Tang
authors.affiliation: School of Forestry, Northeast Forestry University, Harbin 150060, China; State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Yong Feng
authors.initials: YF
authors.lastname: Li
authors.affiliation: State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Nan Qi
authors.initials: NQ
authors.lastname: Ren
mesh_terms: D019149:Bioreactors; D002244:Carbon / Q000737:chemistry; D004867:Equipment Design; D005502:Food; D006859:Hydrogen / Q000378:metabolism*; D006868:Hydrolysis; D011312:Pressure; D012722:Sewage; D018505:Waste Management / Q000295:instrumentation* / Q000379:methods*
chemical_list: D012722:Sewage; D002244:Carbon; D006859:Hydrogen
keywords: Continuous mixed immobilized sludge reactor; Food waste; Hydrogen production; Packing ratio; Sewage sludge