Removal of heavy metals from acid mine drainage (AMD) using coal fly ash, natural clinker and synthetic zeolites.
Name:
Publisher version
View Source
Access full-text PDFOpen Access
View Source
Check access options
Check access options
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.Citation
Journal of Hazardous Materials, 156(1-3): 23-35Publisher
Amsterdam: ElsevierJournal
Journal of Hazardous MaterialsPubMed ID
18221835Type
Journal articleLanguage
enISSN
0304-3894ae974a485f413a2113503eed53cd6c53
10.1016/j.jhazmat.2007.11.123
Scopus Count
Collections
Related articles
- Coal ash conversion into effective adsorbents for removal of heavy metals and dyes from wastewater.
- Authors: Wang S, Soudi M, Li L, Zhu ZH
- Issue date: 2006 May 20
- Removal of heavy metals from wastewater using CFB-coal fly ash zeolitic materials.
- Authors: Koukouzas N, Vasilatos C, Itskos G, Mitsis I, Moutsatsou A
- Issue date: 2010 Jan 15
- Sorption properties of the activated carbon-zeolite composite prepared from coal fly ash for Ni(2+), Cu(2+), Cd(2+) and Pb(2+).
- Authors: Jha VK, Matsuda M, Miyake M
- Issue date: 2008 Dec 15
- Removal of mixed heavy metal ions in wastewater by zeolite 4A and residual products from recycled coal fly ash.
- Authors: Hui KS, Chao CY, Kot SC
- Issue date: 2005 Dec 9
- A study on removal characteristics of heavy metals from aqueous solution by fly ash.
- Authors: Cho H, Oh D, Kim K
- Issue date: 2005 Dec 9