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Wolverhampton Intellectual Repository and E-Theses > School of Applied Sciences > Research Centre in Applied Sciences  > Plant and Environmental Research Group > Removal of heavy metals from acid mine drainage (AMD) using coal fly ash, natural clinker and synthetic zeolites.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2436/30297
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Title: Removal of heavy metals from acid mine drainage (AMD) using coal fly ash, natural clinker and synthetic zeolites.
Authors: Rios, Carlos A.
Williams, Craig D.
Roberts, Clive L.
Citation: Journal of Hazardous Materials, 156(1-3): 23-35
Publisher: Amsterdam: Elsevier
Journal: Journal of Hazardous Materials
Issue Date: 2008
URI: http://hdl.handle.net/2436/30297
DOI: 10.1016/j.jhazmat.2007.11.123
PubMed ID: 18221835
Additional Links: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TGF-4RBYD50-1&_user=10&_coverDate=08%2F15%2F2008&_rdoc=5&_fmt=high&_orig=browse&_srch=doc-info(%23toc%235253%232008%23998439998%23691823%23FLA%23display%23Volume)&_cdi=5253&_sort=d&_docanchor=&_ct=81&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=46c0c4885a55eac290cd2c26a1f2f285
Abstract: Acid mine drainage (AMD) is a widespread environmental problem associated with both working and abandoned mining operations, resulting from the microbial oxidation of pyrite in presence of water and air, affording an acidic solution that contains toxic metal ions. The generation of AMD and release of dissolved heavy metals is an important concern facing the mining industry. The present study aimed at evaluating the use of low-cost sorbents like coal fly ash, natural clinker and synthetic zeolites to clean-up AMD generated at the Parys Mountain copper-lead-zinc deposit, Anglesey (North Wales), and to remove heavy metals and ammonium from AMD. pH played a very important role in the sorption/removal of the contaminants and a higher adsorbent ratio in the treatment of AMD promoted the increase of the pH, particularly using natural clinker-based faujasite (7.70-9.43) and the reduction of metal concentration. Na-phillipsite showed a lower efficiency as compared to that of faujasite. Selectivity of faujasite for metal removal was, in decreasing order, Fe>As>Pb>Zn>Cu>Ni>Cr. Based on these results, the use of these materials has the potential to provide improved methods for the treatment of AMD.
Type: Article
Language: en
Keywords: Mining industry
Acid mine drainage
Sorption
Metal removal
Sorbents
Ammonium
Heavy metals
Zeolites
Coal fly ash
Natural clinker
Faujasite
Environmental pollution
Hazardous materials
ISSN: 0304-3894
Appears in Collections: Plant and Environmental Research Group

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