DOI: 10.1016/j.watres.2018.04.039
Scopus记录号: 2-s2.0-85047469619
论文题名: Phosphorus speciation in sewage sludge and the sludge-derived biochar by a combination of experimental methods and theoretical simulation
作者: Li M. ; Tang Y. ; Lu X.-Y. ; Zhang Z. ; Cao Y.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 140 起始页码: 90
结束页码: 99
语种: 英语
英文关键词: Biochar
; Minerals
; Phosphorus
; Sewage sludge
; Speciation
Scopus关键词: Aluminum compounds
; Biochemistry
; Calcium compounds
; Chlorine compounds
; Knowledge based systems
; Minerals
; Nuclear magnetic resonance
; Nuclear magnetic resonance spectroscopy
; Phosphate minerals
; Phosphorus
; Sodium hydroxide
; Waste management
; Wastewater treatment
; X ray diffraction
; Bio chars
; Conventional fractionations
; Environmental behavior
; Molecular configurations
; Municipal wastewater treatment
; Nuclear Magnetic Resonance (NMR)
; Speciation
; Theoretical simulation
; Sewage sludge
; aluminum
; calcium
; carbon
; ferrous ion
; phosphate
; phosphorus
; phosphorus 31
; bioavailability
; biochar
; chemical element
; detection method
; experimental study
; mineral
; numerical method
; orthophosphate
; phosphorus
; simulation
; sludge
; speciation (chemistry)
; theoretical study
; waste management
; wastewater treatment
; analytic method
; Article
; fractionation
; nuclear magnetic resonance
; priority journal
; sludge
; solid state
; solubility
; theoretical sample
; X ray diffraction
英文摘要: Sewage sludge is an inevitable byproduct from municipal wastewater treatment processes and conversion of sewage sludge into high value-added biochar is an effective strategy for resource utilization of sewage sludge. The characterization on P speciation is important to control the practical applications and environmental behavior of the sewage sludge and its derived biochar. The mobility and bioavailability of P is closely related to its speciation, but knowledge gap in P speciation is still existed which needs to be narrowed by a systematic study including existing experimental methods and techniques as well as theoretical prediction. To achieve a comprehensive understanding of P speciation, this study conducted a series of research combining conventional fractionation of P with consideration of major concomitant elements (Al, Ca, Fe), advanced analytical techniques (solution and solid-state 31P nuclear magnetic resonance (NMR), X-ray diffraction (XRD)), and theoretical simulation with respect to solubility of major elements in different acid-base extractants. Results showed that Ca and Fe were dominantly extracted by HCl whereas P and Al were both NaOH- and HCl-soluble. Inorganic orthophosphates were detected as predominant molecular configurations of P from solution 31P NMR spectra, while the existence of calcium and aluminum orthophosphates was revealed by solid-state 31P NMR. Moreover, the poor-crystalline AlPO4 mineral was further evidenced by XRD patterns of the sewage sludge and biochar. Finally, a theoretical simulation of P-containing minerals was performed on the basis of results above, which suggested the existence of variscite/berlinite and amorphous Ca3(PO4)2 in the sludge and biochar. This study does not only explore the P speciation in the sewage sludge and its derived biochar, but also provides a methodology for further research on P speciation. Through the intensive study on the environmental behavior of P, this work might further contribute to the fundamental knowledge basis for the recycle of P during integrate waste management. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112704
Appears in Collections: 气候减缓与适应
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作者单位: School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, 1088 Xueyuan Blvd, Nanshan District, Shenzhen, 518055, China; Laboratory of Advanced Chemical Engineering, Dalian Institute of Chemical Physics(DICP), Chinese of Academy Sciences, No.457 Zhongshan Road, Dalian, China; Key Laboratory of Municipal Solid Waste Recycling Technology and Management of Shenzhen City, Shenzhen, 518055, China; Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong, Hong Kong, Hong Kong
Recommended Citation:
Li M.,Tang Y.,Lu X.-Y.,et al. Phosphorus speciation in sewage sludge and the sludge-derived biochar by a combination of experimental methods and theoretical simulation[J]. Water Research,2018-01-01,140