MISC

2005年9月

Investigation of the remaining major and trace elements in clean coal generated by organic solvent extraction

FUEL
  • J Wang
  • ,
  • CQ Li
  • ,
  • K Sakanishi
  • ,
  • T Nakazato
  • ,
  • H Tao
  • ,
  • T Takanohashi
  • ,
  • T Takarada
  • ,
  • Saito, I

84
12-13
開始ページ
1487
終了ページ
1493
記述言語
英語
掲載種別
DOI
10.1016/j.fuel.2005.01.012
出版者・発行元
ELSEVIER SCI LTD

A sub-bituminous Wyodak coal (WD coal) and a bituminous Illinois No. 6 coal (IL coal) were thermally extracted with 1-methylnaphthalene (1-MN) and N-methyl-2-pyrrolidone (NMP) to produce clean extract. A mild pretreatment with acetic acid was also carried out. Major and trace inorganic elements in the raw coals and resultant extracts were determined by means of inductively coupled plasma optical emission spectrometry (ICP-OES), flow injection inductively coupled plasma mass spectrometry (FI-ICP-MS), and cold vapor atomic adsorption spectrometry (CV-AAS). It was found that the extraction with 1-MN resulted in 73-100% reductions in the concentration of Li, Be, V, Ga, As, Se, Sr, Cd, Ba, Hg, and Pb. The extraction with NMP yielded more extract than that with 1-MN, but it retained more organically associated major and trace metals in the extracts. In the extraction of WD coal with NMP, the acid pretreatment not only significantly enhanced the extraction yield but also significantly reduced the concentrations of alkaline earth elements such as Be, Ca, Mg, Sr, and Ba in the extract. In addition, the modes of occurrence of trace elements in the coals were discussed according to their extraction behaviors. (c) 2005 Elsevier Ltd. All rights reserved.

Web of Science ® 被引用回数 : 47

リンク情報
DOI
https://doi.org/10.1016/j.fuel.2005.01.012
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000229669500005&DestApp=WOS_CPL

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