Evaluation of the treatment of chromite ore processing residue by ferrous sulfate and asphalt

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dc.contributor.author Moon, Deok Hyun
dc.contributor.author Wazne, Mahmoud
dc.contributor.author Koutsospyros, Agamemnon
dc.contributor.author Christodoulatos, Christos
dc.contributor.author Gevgilili, Halil
dc.contributor.author Malik, Moinuddin
dc.contributor.author Kalyon, Dilhan M.
dc.date.accessioned 2016-03-01T07:27:15Z
dc.date.available 2016-03-01T07:27:15Z
dc.date.copyright 2009
dc.date.issued 2016-03-01
dc.identifier.issn 0304-3894 en_US
dc.identifier.uri http://hdl.handle.net/10725/3219
dc.description.abstract The effectiveness of the treatment of chromite ore processing residue (COPR) with ferrous sulfate and encapsulation into asphalt were explored separately and in combination. The asphalt treatment was conducted by mixing COPR or ferrous sulfate pretreated COPR with varying amounts of asphalt. To assess the efficacy of the treatment, the leachability of toxicity characteristic leaching procedure (TCLP) total chromium (Cr) from all treated samples was determined for curing periods up to 16 months. X-ray absorption near edge structure (XANES) analyses were also performed to evaluate the Cr6+ concentration in the selected samples. The combination treatment of ferrous sulfate and the encapsulation of the treated COPR into asphalt reduced the TCLP total Cr concentration to lower than the regulatory limit of 5 mg/L for Cr contaminated soils, after 16 months. However, the Cr concentrations were still higher than the universal treatment standards (UTS) of 0.6 mg/L for hazardous waste. On the other hand, treatment with ferrous sulfate alone or the encapsulation of the COPR in asphalt failed to meet the TCLP total Cr concentration of 5 mg/L, after 16 months. XANES analyses results showed that more than 75% Cr6+ reduction was achieved upon pretreatment with ferrous sulfate. en_US
dc.language.iso en en_US
dc.title Evaluation of the treatment of chromite ore processing residue by ferrous sulfate and asphalt en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 201205627 en_US
dc.author.woa N/A en_US
dc.author.department Civil Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal Journal of Hazardous Materials en_US
dc.journal.volume 166 en_US
dc.journal.issue 1 en_US
dc.article.pages 27-32 en_US
dc.keywords Asphalt en_US
dc.keywords Chromium en_US
dc.keywords COPR treatment en_US
dc.keywords Ettringite en_US
dc.keywords Ferrous sulfate en_US
dc.identifier.doi http://dx.doi.org/10.1016/j.jhazmat.2008.09.079 en_US
dc.identifier.ctation Moon, D. H., Wazne, M., Koutsospyros, A., Christodoulatos, C., Gevgilili, H., Malik, M., & Kalyon, D. M. (2009). Evaluation of the treatment of chromite ore processing residue by ferrous sulfate and asphalt. Journal of hazardous materials, 166(1), 27-32. en_US
dc.author.email mahmoud.wazne@lau.edu.lb
dc.identifier.url http://www.sciencedirect.com/science/article/pii/S0304389408014209

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