DOI: 10.1016/j.watres.2018.07.003
Scopus记录号: 2-s2.0-85049466544
论文题名: Effect of aromatic repolymerization of humic acid-like fraction on digestate phytotoxicity reduction during high-solid anaerobic digestion for stabilization treatment of sewage sludge
作者: Tang Y. ; Li X. ; Dong B. ; Huang J. ; Wei Y. ; Dai X. ; Dai L.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 143 起始页码: 436
结束页码: 444
语种: 英语
英文关键词: Aromatization
; High-solid anaerobic digestion
; Humic acid-like fraction
; Phytotoxicity
; Sewage sludge
; Stabilization
Scopus关键词: Aromatic compounds
; Aromatic polymers
; Aromatization
; Biodegradation
; Biological materials
; Detoxification
; Organic acids
; Organic polymers
; Seed
; Sewage sludge
; Sludge digestion
; Stabilization
; Electrical conductivity
; High-solids
; Humic-acid-like
; Phytotoxicity
; Positive correlations
; Reduction efficiency
; Sewage sludge stabilization
; Stabilization treatments
; Anaerobic digestion
; humic acid
; anaerobic digestion
; chemical property
; chemical reaction
; electrical conductivity
; germination
; humic acid
; humification
; phytotoxicity
; polymer
; polymerization
; seed
; sewage treatment
; sludge
; stabilization
; anaerobic digestion
; aromatization
; Article
; controlled study
; electric conductivity
; germination
; phytotoxicity
; polymerization
; priority journal
; reduction (chemistry)
; sludge
英文摘要: Humification plays an important role in the sewage sludge stabilization treatment and probably influences the end-product ecotoxicity, which are not fully understood for high-solid anaerobic digestion (AD) process. This study monitored the aromaticity degree of humic acid-like fraction (HA) and detected digestate phytotoxicity during a 48-d high-solid AD. Significant repolymerization of aromatic structures in HA. Electrical conductivity (EC) of digestate changed negatively with the aromaticity degree in HA, and the digestate with high EC had low seed germination index (SGI). A positive correlation between SGI and the aromaticity degree of HA was found. Aromatic repolymerization of HA supplies more aromatic electron-rich sites to form neo-humic polymers and to determine the distribution of organic and/or inorganic phytotoxic compounds; thus, aromatic repolymerization of HA may control the digestate phytotoxicity by reducing excessive salinity. The results showed the effect of HA repolymerization on digestate stabilization and phytotoxicity reduction during the high-solid AD process. The inadequate phytotoxicity reduction efficiency (SGI ≤ 17%) may be ascribed to unaccomplished HA repolymerization, creating a demand for humification intensification studies. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112567
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Pollution Control and Resources Reuse, National Engineering Research Center for Urban Pollution Control, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, China
Recommended Citation:
Tang Y.,Li X.,Dong B.,et al. Effect of aromatic repolymerization of humic acid-like fraction on digestate phytotoxicity reduction during high-solid anaerobic digestion for stabilization treatment of sewage sludge[J]. Water Research,2018-01-01,143