| 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
| |
| 发表期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| ISSN | 0048-9697 |
| 2020-01-20 | |
| 卷号 | 701页码:134919 |
| 关键词 | Biochar DOM C K-edge NEXAFS EEM-PARAFAC 2D-COS Cu binding |
| 研究领域 | Environmental Sciences |
| DOI | 10.1016/j.scitotenv.2019.134919 |
| 产权排序 | [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 |
| 通讯作者 | Yuan, Guodong(yuanguodong@zqu.edu.cn) ; Lu, Jian(jlu@yic.ac.cn) |
| 作者部门 | 海岸带环境过程实验室 |
| 英文摘要 | Multiple 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. |
| 文章类型 | Article |
| 资助机构 | National 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] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | DISSOLVED ORGANIC-MATTER ; PYROLYSIS TEMPERATURE ; RICE STRAW ; FLUORESCENCE ; CARBON ; COPPER ; SOIL ; MOBILITY ; IMPACT ; BIOACCUMULATION |
| 研究领域[WOS] | Environmental Sciences |
| WOS记录号 | WOS:000498801400038 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/24766 |
| 专题 | 中国科学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 中国科学院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.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 |
| 推荐引用方式 GB/T 7714 | 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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