Limited Cu(II) binding to biochar DOM: Evidence from C K-edge NEXAFS and EEM-PARAFAC combined with two-dimensional correlation analysis
Wei, J; Tu, C; Yuan, GD; Zhou, YQ; Wang, HL; Lu, J
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
2020-01-20
Volume701Pages:134919
KeywordBiochar DOM C K-edge NEXAFS EEM-PARAFAC 2D-COS Cu binding
MOST Discipline CatalogueEnvironmental Sciences
DOI10.1016/j.scitotenv.2019.134919
Contribution Rank[Wei, Jing; Tu, Chen; Lu, Jian] Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China; [Yuan, Guodong] Zhaoqing Univ, Sch Environm & Chem Engn, Zhaoqing 526061, Peoples R China; [Zhou, Yongqiang] Chinese Acad Sci, Nanjing Inst Geog & Limnol, Stated Key Lab Lake Sci & Environm, Nanjing 210008, Jiangsu, Peoples R China; [Wang, Hailong] Foshan Univ, Sch Environm & Chem Engn, Biochar Engn Technol Res Ctr Guangdong Prov, Foshan 528000, Peoples R China; [Wang, Hailong] Zhejiang A&F Univ, Zhejiang Prov Key Lab Soil Contaminat & Bioremedi, Hangzhou 311300, Zhejiang, Peoples R China
Department海岸带环境过程实验室
AbstractMultiple spectroscopic technologies and chemometric analyses were combined to explore the compositional characteristics and Cu binding performance of biochar-derived dissolved organic matter (DOM). The DOM samples were extracted from biochars produced from lignocellulose-rich rapeseed cake (RSC) by pyrolysis at 300, 500, and 700 degrees C (i.e., RSC300, RSC500, RSC700). Fourier transform infrared spectroscopy (FTIR) and carbon K-edge near-edge X-ray absorption fine structure spectroscopy (NEXAFS) analyses were combined to elucidate the molecular-level C species in the DOM. With the increasing pyrolysis temperature, DOM aromaticity increased, whereas the proportion of metal complexing sites (e.g., carboxyl and phenolic groups) decreased. Fluorescence excitation-emission matrix (EEM) spectroscopy with parallel factor analysis (PARAFAC) indicated that biochar DOM, irrespective of pyrolysis temperature, was mostly composed of three types of humic-like components (C1-C3), and a small amount of a protein-like component (C4). As charring temperature increased, DOM concentrations decreased substantially, but the humic-like C3 with abundant aromatic structures became predominant. Fluorescence quenching experiment and two-dimensional correlation spectroscopy (2D-COS) analysis suggested that the preferential Cu(II) binding fractions of the DOM were the humic-like substances. Moreover, the quenching curve fitting results for individual components indicated that despite the Cu (II) binding affinity was slightly enhanced as the pyrolysis temperature increased, the binding capacities of the four components decreased. In general, the DOM components from RSC biochar exhibited limited Cu(II) binding capacities (2.18-17.7 lmol L-1). Results from this study improved understanding of the mechanisms by which biochar DOM interacts with Cu, and provided tools for fast screening of biochars to reduce their environmental risks. (C) 2019 Elsevier B.V. All rights reserved.
SubtypeArticle
Indexed BySCI
Language英语
WOS KeywordDISSOLVED ORGANIC-MATTER ; PYROLYSIS TEMPERATURE ; RICE STRAW ; FLUORESCENCE ; CARBON ; COPPER ; SOIL ; MOBILITY ; IMPACT ; BIOACCUMULATION
WOS Research AreaEnvironmental Sciences
WOS IDWOS:000498801400038
Funding OrganizationNational Natural Science Foundation of ChinaNational Natural Science Foundation of China [41501522, 41671319, 41977139] ; Yantai Key Research and Development Program [2019XDHZ104] ; National Key Research and Development Program of China [2016YFD0200303, 2016YFE0106400] ; One Hundred Talents Program of Chinese Academy of SciencesChinese Academy of Sciences [Y629041021]
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/24766
Collection中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China;
2.Zhaoqing Univ, Sch Environm & Chem Engn, Zhaoqing 526061, Peoples R China;
3.Chinese Acad Sci, Nanjing Inst Geog & Limnol, Stated Key Lab Lake Sci & Environm, Nanjing 210008, Jiangsu, Peoples R China;
4.Foshan Univ, Sch Environm & Chem Engn, Biochar Engn Technol Res Ctr Guangdong Prov, Foshan 528000, Peoples R China;
5.Zhejiang A&F Univ, Zhejiang Prov Key Lab Soil Contaminat & Bioremedi, Hangzhou 311300, Zhejiang, Peoples R China
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Wei, J,Tu, C,Yuan, GD,et al. Limited Cu(II) binding to biochar DOM: Evidence from C K-edge NEXAFS and EEM-PARAFAC combined with two-dimensional correlation analysis[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,701:134919.
APA Wei, J,Tu, C,Yuan, GD,Zhou, YQ,Wang, HL,&Lu, J.(2020).Limited Cu(II) binding to biochar DOM: Evidence from C K-edge NEXAFS and EEM-PARAFAC combined with two-dimensional correlation analysis.SCIENCE OF THE TOTAL ENVIRONMENT,701,134919.
MLA Wei, J,et al."Limited Cu(II) binding to biochar DOM: Evidence from C K-edge NEXAFS and EEM-PARAFAC combined with two-dimensional correlation analysis".SCIENCE OF THE TOTAL ENVIRONMENT 701(2020):134919.
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