DOI: 10.1016/j.watres.2018.02.012
Scopus记录号: 2-s2.0-85042186183
论文题名: Sequential pretreatment for cell disintegration of municipal sludge in a neutral Bio-electro-Fenton system
作者: Yu Q. ; Jin X. ; Zhang Y.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 135 起始页码: 44
结束页码: 56
语种: 英语
英文关键词: Anode anaerobic digestion
; Bio-electro-fenton (BEF) system
; Cell wall
; HydroxyL radical
; Peptidoglycan
Scopus关键词: Anaerobic digestion
; Anodes
; Bacteria
; Cathodes
; Cells
; Cytology
; Fourier transform infrared spectroscopy
; Free radicals
; Oxidation
; X ray photoelectron spectroscopy
; Advanced Oxidation Processes
; Cell walls
; Electro-fenton
; Fourier transform infra red (FTIR) spectroscopy
; Gram-positive bacterium
; Hydroxyl radicals
; Peptidoglycans
; Sequential pretreatment
; Sludge digestion
; hydroxyl radical
; methane
; peptidoglycan
; polysaccharide
; protein
; activated sludge
; anaerobic digestion
; Article
; bacterial outer membrane
; cell disruption
; cell wall
; chemical analysis
; chemical oxygen demand
; controlled study
; dissolution
; electrochemistry
; electron transport
; energy balance
; Fenton reaction
; hydrolysis
; infrared spectroscopy
; inoculation
; macromolecule
; methanogenesis
; microbial degradation
; nonhuman
; priority journal
; sludge treatment
; topography
; X ray photoelectron spectroscopy
; biotechnology
; chemistry
; devices
; electrode
; equipment design
; Gram positive bacterium
; metabolism
; oxidation reduction reaction
; procedures
; sewage
; X ray photoemission spectroscopy
; Negibacteria
; Posibacteria
; Biotechnology
; Electrodes
; Equipment Design
; Gram-Positive Bacteria
; Hydrolysis
; Oxidation-Reduction
; Peptidoglycan
; Photoelectron Spectroscopy
; Sewage
; Spectroscopy, Fourier Transform Infrared
; Waste Disposal, Fluid
英文摘要: Sludge cell disruption was generally considered as the rate-limiting step for the anaerobic digestion of waste activated sludge (WAS). Advanced oxidation processes and bio-electro-chemical systems were recently reported to enhance the hydrolysis of WAS and sludge cell disruption, while the cell-breaking processes of these systems remain unclear yet. In this study, an innovative Bio-electro-Fenton system was developed to pretreat the WAS sequentially with cathode Fenton process and anode anaerobic digestion. Significant cell disruption and dissolution intracellular organics were founded after the treatment. X-ray photoelectron spectroscopy (XPS) analysis and fourier transform infrared spectroscopy (FT-IR) spectra indicated that Gram-negative bacteria were more sensitive to free radicals yielded in cathode to induce a chain reaction that destroyed the lipid-contained outer membrane, while Gram-positive bacteria with thick peptidoglycan layer were liable to be biologically decomposed in the anode. Compared with the oxidation of organic matters in the cathode Fenton, the secretion of enzyme increased in the anode which was beneficial to break down the complex matters (peptidoglycans) into simples that were available for anode oxidation by exoelectrogens. The results also showed a possible prospect for the application of this sequential pretreatment in bio-electro-Fenton systems to disrupt sludge cells and enhance the anaerobic digestion. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112877
Appears in Collections: 气候减缓与适应
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作者单位: Key Laboratory of Industrial Ecology and Environmental Engineering, Dalian University of Technology, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
Recommended Citation:
Yu Q.,Jin X.,Zhang Y.. Sequential pretreatment for cell disintegration of municipal sludge in a neutral Bio-electro-Fenton system[J]. Water Research,2018-01-01,135