Concentration and association of minor and trace elements in Mukah coal from Sarawak, Malaysia, with emphasis on the potentially hazardous trace elements

The ash yield and concentrations of twenty-four minor and trace elements, including twelve potentially hazardous trace elements were determined in Mukah coal from Sarawak, Malaysia. Comparisons made to the Clarke values show that Mukah coal is depleted in Ag, Ba, Be, Cd, Co. Mn, Ni, Se, U, and V. On...

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Main Authors:	Sia, Say-Gee, Abdullah, W.H.
Format:	Article
Published:	Elsevier 2010
Subjects:	G Geography. Anthropology. Recreation Q Science (General) S Agriculture (General)
Online Access:	http://eprints.um.edu.my/14683/

id	um-14683
recordtype	eprints
spelling	um-146832015-11-09T01:28:05Z Concentration and association of minor and trace elements in Mukah coal from Sarawak, Malaysia, with emphasis on the potentially hazardous trace elements Sia, Say-Gee Abdullah, W.H. G Geography. Anthropology. Recreation Q Science (General) S Agriculture (General) The ash yield and concentrations of twenty-four minor and trace elements, including twelve potentially hazardous trace elements were determined in Mukah coal from Sarawak, Malaysia. Comparisons made to the Clarke values show that Mukah coal is depleted in Ag, Ba, Be, Cd, Co. Mn, Ni, Se, U, and V. On the other hand, it is enriched in As, Cr, Cu, Pb, Sb, Th, and Zn. Among the trace elements studied, V and Ba are associated predominantly with the clay minerals. Manganese, Cr, Cu, Th, and Ni are mostly bound within the aluminosilicate, sulphide and/or carbonate minerals in varying proportions, though a portion of these elements are also organically bound. Arsenic, Pb and Sb are mostly organically bound, though some of these elements are also associated with the sulphide minerals. Zinc is associated with both the organic and inorganic contents of the coal. Among the potentially hazardous trace elements, Be, Cd, Co, Mn, Ni, Se, and U may be of little or no health and environmental concerns, whereas As, Cr, Pb, Sb and Th require further examination for their potential health and environmental concerns. Of particular concern are the elements As, Pb and Sb, which are mostly organically bound and hence cannot be removed by physical cleaning technologies. They escape during coal combustion, either released as vapours to the atmosphere or are adsorbed onto the fine fly ash particles. (C) 2011 Elsevier ay. All rights reserved. Elsevier 2010 Article PeerReviewed Sia, Say-Gee; Abdullah, W.H. (2010) Concentration and association of minor and trace elements in Mukah coal from Sarawak, Malaysia, with emphasis on the potentially hazardous trace elements. International Journal of Coal Geology <http://eprints.um.edu.my/view/publication/International_Journal_of_Coal_Geology.html>, 88 (4). pp. 179-193. http://eprints.um.edu.my/14683/
repository_type	Digital Repository
institution_category	Local University
institution	University Malaya
building	UM Research Repository
collection	Online Access
topic	G Geography. Anthropology. Recreation Q Science (General) S Agriculture (General)
spellingShingle	G Geography. Anthropology. Recreation Q Science (General) S Agriculture (General) Sia, Say-Gee Abdullah, W.H. Concentration and association of minor and trace elements in Mukah coal from Sarawak, Malaysia, with emphasis on the potentially hazardous trace elements
description	The ash yield and concentrations of twenty-four minor and trace elements, including twelve potentially hazardous trace elements were determined in Mukah coal from Sarawak, Malaysia. Comparisons made to the Clarke values show that Mukah coal is depleted in Ag, Ba, Be, Cd, Co. Mn, Ni, Se, U, and V. On the other hand, it is enriched in As, Cr, Cu, Pb, Sb, Th, and Zn. Among the trace elements studied, V and Ba are associated predominantly with the clay minerals. Manganese, Cr, Cu, Th, and Ni are mostly bound within the aluminosilicate, sulphide and/or carbonate minerals in varying proportions, though a portion of these elements are also organically bound. Arsenic, Pb and Sb are mostly organically bound, though some of these elements are also associated with the sulphide minerals. Zinc is associated with both the organic and inorganic contents of the coal. Among the potentially hazardous trace elements, Be, Cd, Co, Mn, Ni, Se, and U may be of little or no health and environmental concerns, whereas As, Cr, Pb, Sb and Th require further examination for their potential health and environmental concerns. Of particular concern are the elements As, Pb and Sb, which are mostly organically bound and hence cannot be removed by physical cleaning technologies. They escape during coal combustion, either released as vapours to the atmosphere or are adsorbed onto the fine fly ash particles. (C) 2011 Elsevier ay. All rights reserved.
format	Article
author	Sia, Say-Gee Abdullah, W.H.
author_facet	Sia, Say-Gee Abdullah, W.H.
author_sort	Sia, Say-Gee
title	Concentration and association of minor and trace elements in Mukah coal from Sarawak, Malaysia, with emphasis on the potentially hazardous trace elements
title_short	Concentration and association of minor and trace elements in Mukah coal from Sarawak, Malaysia, with emphasis on the potentially hazardous trace elements
title_full	Concentration and association of minor and trace elements in Mukah coal from Sarawak, Malaysia, with emphasis on the potentially hazardous trace elements
title_fullStr	Concentration and association of minor and trace elements in Mukah coal from Sarawak, Malaysia, with emphasis on the potentially hazardous trace elements
title_full_unstemmed	Concentration and association of minor and trace elements in Mukah coal from Sarawak, Malaysia, with emphasis on the potentially hazardous trace elements
title_sort	concentration and association of minor and trace elements in mukah coal from sarawak, malaysia, with emphasis on the potentially hazardous trace elements
publisher	Elsevier
publishDate	2010
url	http://eprints.um.edu.my/14683/
first_indexed	2018-09-06T06:24:50Z
last_indexed	2018-09-06T06:24:50Z
_version_	1610838274755002368

Concentration and association of minor and trace elements in Mukah coal from Sarawak, Malaysia, with emphasis on the potentially hazardous trace elements

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