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Roles of pyrolysis on availability, species and distribution of Cu and Zn in the swine manure: Chemical extractions and high-energy synchrotron analyses
Lin, Q; Liang, L; Wang, LH; Ni, QL; Yang, K; Zhang, J; Chen, DL; Yang, JJ; Shen, XD;张静; Chen DL(陈栋梁)
2013
发表期刊CHEMOSPHERE
卷号93期号:9页码:2094-2100
摘要Animal manures generally contain high levels of heavy metals that may pose a significant threat to soil and groundwater qualities. Pyrolysis as means of reducing metal availability in such feed stocks is recently encouraged, but systematic studies are currently lacking. The aim of this study was to assess the impact of pyrolysis temperature on the availability of Cu and Zn by chemical extraction, to determine the speciation of Cu and Zn by synchrotron-based X-ray spectroscopy, and finally to investigate the phase distribution of metal species in the carbonaceous materials by combining acid-base extractions and absorption spectroscopy data. The results showed that both Cu and Zn in the swine manure were mainly bound to organic functional groups. Cu (II) reduction and Cu (I)-S complexes were observed during the pyrolysis process. Zn species resembling ZnAc2 was still dominant, being 60.8-69.2%, and ZnS increased by 6.6-21.8% in the carbonaceous materials. The distribution of Cu and Zn in the mineral, carbonized and non-carbonized organic phases varied greatly with the pyrolysis temperature. The higher the temperature, the more the metals existed in the mineral phase and carbonized organic phase. The decrease of EDTA extractable Cu and Zn with pyrolysis temperature was due to the increase of metals in the carbonized organic phase and mineral phase. It is suggested that pyrolysis at the relatively higher temperature is a better choice for metal-containing manure according to the metal speciation, solubility and availability. (C) 2013 Elsevier Ltd. All rights reserved.
关键词Swine manure Metal Pyrolysis Carbonaceous material Speciation
学科领域Environmental Sciences & Ecology
DOI10.1016/j.chemosphere.2013.07.053
收录类别SCI
WOS记录号WOS:000327109300057
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224188
专题多学科研究中心
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GB/T 7714
Lin, Q,Liang, L,Wang, LH,et al. Roles of pyrolysis on availability, species and distribution of Cu and Zn in the swine manure: Chemical extractions and high-energy synchrotron analyses[J]. CHEMOSPHERE,2013,93(9):2094-2100.
APA Lin, Q.,Liang, L.,Wang, LH.,Ni, QL.,Yang, K.,...&陈栋梁.(2013).Roles of pyrolysis on availability, species and distribution of Cu and Zn in the swine manure: Chemical extractions and high-energy synchrotron analyses.CHEMOSPHERE,93(9),2094-2100.
MLA Lin, Q,et al."Roles of pyrolysis on availability, species and distribution of Cu and Zn in the swine manure: Chemical extractions and high-energy synchrotron analyses".CHEMOSPHERE 93.9(2013):2094-2100.
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