IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
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
Source PublicationFUEL
Volume184Issue:2016Pages:42-49
SubtypeArticle
AbstractTwenty-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.
KeywordChemical Speciation Chromium Vanadium Coal Rank
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.fuel.2016.07.003
WOS KeywordHAZARDOUS TRACE-ELEMENTS ; LATE PERMIAN COALS ; SHENBEI COALFIELD ; CHINA ; LIGNITE ; MODES ; CARCINOGENICITY ; GEOCHEMISTRY ; TOXICITY ; PROVINCE
Indexed BySCI
Language英文
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000381619800006
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5665
Collection黄土与第四纪地质国家重点实验室(2010~)
Affiliation1.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
Recommended Citation
GB/T 7714
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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