Chemical speciation and combustion behavior of chromium (Cr) and vanadium (V) in coals
Liu, Yuan1,2; Liu, Guijian1,2; Qi, Cuicui1; Cheng, Siwei1; Sun, Ruoyu1
2016-11-15
发表期刊FUEL
卷号184期号:2016页码:42-49
文章类型Article
摘要Twenty-one coal samples of different coal ranks and one stone coal sample were collected from nine provinces in China, with an aim of studying the chemical speciation and combustion behavior of Cr and V in coals. The concentrations of Cr and V in studied coals range from 0.12 to 176 mu g/g, and from 2.74 to 61.5 mu g/g, respectively. Six operationally defined modes of occurrence of Cr and V are extracted from the coal using the sequential extraction procedure: water leachable, ion exchangeable, organic matter bound, carbonate bound, silicate bound and sulfide bound. Among these six modes, silicate bound Cr and V have the highest fractions. With the increase of coal rank, organic matter bound Cr and V show decline trends. We found that Cr and V are highly correlated in the coal samples, which may relate to their leading existence as silicate bound and organic bound forms. Both Cr and V exhibit medium to low volatility, due to their high association with silicate. The volatilization ratios of Cr and V in coals decrease with the advance of coal rank. (C) 2016 Elsevier Ltd. All rights reserved.
关键词Chemical Speciation Chromium Vanadium Coal Rank
WOS标题词Science & Technology ; Technology
DOI10.1016/j.fuel.2016.07.003
关键词[WOS]HAZARDOUS TRACE-ELEMENTS ; LATE PERMIAN COALS ; SHENBEI COALFIELD ; CHINA ; LIGNITE ; MODES ; CARCINOGENICITY ; GEOCHEMISTRY ; TOXICITY ; PROVINCE
收录类别SCI
语种英语
WOS研究方向Energy & Fuels ; Engineering
WOS类目Energy & Fuels ; Engineering, Chemical
WOS记录号WOS:000381619800006
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5665
专题黄土与第四纪地质国家重点实验室(2010~)
作者单位1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China
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Liu, Yuan,Liu, Guijian,Qi, Cuicui,et al. Chemical speciation and combustion behavior of chromium (Cr) and vanadium (V) in coals[J]. FUEL,2016,184(2016):42-49.
APA Liu, Yuan,Liu, Guijian,Qi, Cuicui,Cheng, Siwei,&Sun, Ruoyu.(2016).Chemical speciation and combustion behavior of chromium (Cr) and vanadium (V) in coals.FUEL,184(2016),42-49.
MLA Liu, Yuan,et al."Chemical speciation and combustion behavior of chromium (Cr) and vanadium (V) in coals".FUEL 184.2016(2016):42-49.
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