Arid
DOI10.1007/s10661-014-4148-0
Potentially toxic elements in lignite and its combustion residues from a power plant
Ram, L. C.; Masto, R. E.; Srivastava, N. K.; George, J.; Selvi, V. A.; Das, T. B.; Pal, S. K.; Maity, S.; Mohanty, D.
通讯作者Ram, L. C.
来源期刊ENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN0167-6369
EISSN1573-2959
出版年2015
卷号187期号:1
英文摘要

The presence of potentially toxic elements in lignite and coal is a matter of global concern during energy extraction from them. Accordingly, Barsingsar lignite from Rajasthan (India), a newly identified and currently exploited commercial source of energy, was evaluated for the presence of these elements and their fate during its combustion. Mobility of these elements in Barsingsar lignite and its ashes from a power plant (Bikaner-Nagaur region of Thar Desert, India) is presented in this paper. Kaolinite, quartz, and gypsum are the main minerals in lignite. Both the fly ash and bottom ash of lignite belong to class-F with SiO2> Al2O3> CaO> MgO. Both the ashes contain quartz, mullite, anhydrite, and albite. As, In, and Sr have higher concentration in the feed than the ashes. Compared to the feed lignite, Ba, Co, U, Cu, Cd, and Ni are enriched (10-5 times) in fly ash and Co, Pb, Li, Ga, Cd, and U in bottom ash (9-5 times). Earth crust-normalization pattern showed enrichment of Ga, U, B, Ag, Cd, and Se in the lignite; Li, Ba, Ga, B, Cu, Ag, Cd, Hg, Pb, and Se, in fly ash; and Li, Sr, Ga, U, B, Cu, Ag, Cd, Pb, and Se in bottom ash. Hg, Ag, Zn, Ni, Ba, and Se are possibly associated with pyrite. Leaching test by toxicity characteristic leaching procedure (TCLP) showed that except B all the elements are within the safe limits prescribed by Indian Standards.


英文关键词Lignite CFBC Ash Trace elements Association Leaching
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000351534100002
WOS关键词TRACE-ELEMENTS ; FLY-ASH ; LEACHING BEHAVIOR ; INORGANIC MATTER ; COAL COMBUSTION ; MINERALS ; GASIFICATION ; FATE ; SPECIATION ; BIOMASS
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/187099
作者单位CSIR Cent Inst Min & Fuel Res, Environm Management Div, Dhanbad 828108, Bihar, India
推荐引用方式
GB/T 7714
Ram, L. C.,Masto, R. E.,Srivastava, N. K.,et al. Potentially toxic elements in lignite and its combustion residues from a power plant[J],2015,187(1).
APA Ram, L. C..,Masto, R. E..,Srivastava, N. K..,George, J..,Selvi, V. A..,...&Mohanty, D..(2015).Potentially toxic elements in lignite and its combustion residues from a power plant.ENVIRONMENTAL MONITORING AND ASSESSMENT,187(1).
MLA Ram, L. C.,et al."Potentially toxic elements in lignite and its combustion residues from a power plant".ENVIRONMENTAL MONITORING AND ASSESSMENT 187.1(2015).
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