title: Effect of short-time hydrothermal pretreatment of kitchen waste on biohydrogen production: fluorescence spectroscopy coupled with parallel factor analysis.
abstract: The enhancement of bio-hydrogen production from kitchen waste by a short-time hydrothermal pretreatment at different temperatures (i.e., 90°C, 120°C, 150°C and 200°C) was evaluated. The effects of temperature for the short-time hydrothermal pretreatment on kitchen waste protein conversion and dissolved organic matter characteristics were investigated in this study. A maximum bio-hydrogen yield of 81.27mL/g VS was acquired at 200°C by the short-time hydrothermal pretreatment during the anaerobic fermentative hydrogen production. Analysis of the dissolved organic matter composition showed that the protein-like peak dominated and that three fluorescent components were separated using fluorescence excitation-emission matrix spectra coupled with the parallel factor model. The maximum fluorescence intensities of protein-like components decomposed through the parallel factor analysis has a significant correlation with the raw protein concentration, showed by further correlation analysis. This directly impacted the hydrogen production ability.
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
authors.forename: Mingxiao
authors.initials: M
authors.lastname: Li
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; College of Life Sciences, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Tianming
authors.initials: T
authors.lastname: Xia
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
authors.forename: Chaowei
authors.initials: C
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
authors.forename: Beidou
authors.initials: B
authors.lastname: Xi
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. Electronic address: jiaxuan75710@163.com.
authors.forename: Xuan
authors.initials: X
authors.lastname: Jia
authors.affiliation: College of Life Sciences, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Zimin
authors.initials: Z
authors.lastname: Wei
authors.affiliation: College of Life Sciences, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Jinlong
authors.initials: J
authors.lastname: Zhu
mesh_terms: D005163:Factor Analysis, Statistical; D006358:Hot Temperature; D006859:Hydrogen / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism*; D012037:Refuse Disposal / Q000379:methods; D012147:Restaurants; D012722:Sewage / Q000737:chemistry* / Q000382:microbiology*; D013050:Spectrometry, Fluorescence / Q000379:methods*; D014867:Water / Q000737:chemistry
chemical_list: D012722:Sewage; D014867:Water; D006859:Hydrogen
keywords: Bio-hydrogen production; Kitchen waste; Parallel factor analysis; Short-time hydrothermal pretreatment