DOI: 10.1016/j.watres.2018.01.009
Scopus记录号: 2-s2.0-85042770977
论文题名: Speciation evolution of zinc and copper during pyrolysis and hydrothermal carbonization treatments of sewage sludges
作者: Huang R. ; Zhang B. ; Saad E.M. ; Ingall E.D. ; Tang Y.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 132 起始页码: 260
结束页码: 269
语种: 英语
英文关键词: Heavy metals
; Hydrothermal carbonization
; Pyrolysis
; Sewage sludge
; Speciation
Scopus关键词: Anaerobic digestion
; Carbonization
; Chemical analysis
; Cracking (chemical)
; Heavy metals
; Pyrolysis
; Sewage sludge
; Sludge disposal
; Thermochemistry
; Waste disposal
; Waste management
; X ray spectroscopy
; Zinc
; Hydrothermal carbonization
; Hydrothermal treatments
; Municipal sewage sludge
; Sequential chemical extraction
; Speciation
; Speciation transformation
; Treatment conditions
; Treatment techniques
; Chemical speciation
; anaerobic digestion
; chemical reaction
; copper
; environmental risk
; extraction method
; heavy metal
; hydrothermal system
; pyrolysis
; recycling
; sludge
; speciation (chemistry)
; waste disposal
; zinc
英文摘要: Thermal and hydrothermal treatments are promising techniques for sewage sludge management that can potentially facilitate safe waste disposal, energy recovery, and nutrient recovery/recycling. Content and speciation of heavy metals in the treatment products affect the potential environmental risks upon sludge disposal and/or application of the treatment products. Therefore, it is important to study the speciation transformation of heavy metals and the effects of treatment conditions. By combining synchrotron X-ray spectroscopy/microscopy analysis and sequential chemical extraction, this study systematically characterized the speciation of Zn and Cu in municipal sewage sludges and their chars derived from pyrolysis (a representative thermal treatment technique) and hydrothermal carbonization (HTC; a representative hydrothermal treatment technique). Spectroscopy analysis revealed enhanced sulfidation of Zn and Cu by anaerobic digestion and HTC treatments, as compared to desulfidation by pyrolysis. Overall, changes in the chemical speciation and matrix properties led to reduced mobility of Zn and Cu in the treatment products. These results provide insights into the reaction mechanisms during pyrolysis and HTC treatments of sludges and can help evaluate the environmental/health risks associated with the metals in the treatment products. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112963
Appears in Collections: 气候减缓与适应
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作者单位: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311Ferst Dr, Atlanta, GA 30324-0340, United States
Recommended Citation:
Huang R.,Zhang B.,Saad E.M.,et al. Speciation evolution of zinc and copper during pyrolysis and hydrothermal carbonization treatments of sewage sludges[J]. Water Research,2018-01-01,132