Effects of particle size and acid addition on the ...

Abstract : A bench-scale treatability study was conducted to assess the effects of particle size and acid addition on the remediation of chromite ore processing residue (COPR) using ferrous sulfate.

US8323593B2 - Process for solubilizing, reducing and ...

In-situ chemical reduction of hexavalent chrome at chromite ore processing residue sites, May 2008, Presented at Sixth International Battelle Conference on Remediation of Chlorinated and Recalcitrant Compounds, Monterey, Calif.), ferrous sulfate and sodium dithionate (Su C M et al., 2005, Treatment of hexavalent chromium in chromite ore processing solid waste using a mixed reductant solution ...

Chromium Remediation or Release? Effect of Iron(II ...

Chromite ore processing residue (COPR), derived from the so-called high lime processing of chromite ore, contains high levels of Cr(III) and Cr(VI) and has a pH between 11 and 12. Ferrous sulfate, which is used for remediation of Cr(VI) contamination in wastewater and soils via reduction to Cr(III) and subsequent precipitation of iron(III ...

Assessment of calcium polysulfide for the remediation of ...

Journal of Hazardous Materials 143 (2007) 620–628 Assessment of calcium polysulfide for the remediation of hexavalent chromium in chromite ore processing residue (COPR) Mahmoud Wazne a,∗, Santhi Chandra Jagupilla a, Deok Hyun Moon a, Sarath Chandra Jagupilla a ...

LAU | Mahmoud Wazne | School of Engineering

Assessment of ferrous chloride and Portland cement for the remediation of chromite ore processing ... chromite ore processing residue using ferrous ... Mahmoud Wazne ...

extraction of chromium from its chromite - iradiobook.de

Remediation of chromite ore processing residue using ... Remediation of chromite ore processing residue ... the extraction of chromium from its chromite ore ... of chromite ore processing residue using ferrous sulfate ...

Treatment of Hexavalent Chromium in Chromite Ore ...

Abstract: Chromite ore processing residue (COPR), derived from the so-called high lime processing of chromite ore, contains high levels of Cr(III) and Cr(VI) and has a pH between 11 and 12. Ferrous sulfate, which is used for remediation of Cr(VI) contamination in ...

Effects of particle size and acid addition on the ...

View This Abstract Online; Effects of particle size and acid addition on the remediation of chromite ore processing residue using ferrous sulfate.

Remediation of chromite ore processi ng residue using ...

Remediation of chromite ore processing residue using ferrous sulfate and calcium polysulfide 107 2.4. PhysicochemicalA nalyses The elemental composition of the COPR samples was

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Abstract. A bench-scale treatability study was conducted to assess the effects of particle size and acid addition on the remediation of chromite ore processing residue (COPR) using ferrous sulfate.

Remediation of Chromite Ore Processing Residues with ...

Such a simultaneous reduction and immoboilization process enables the feasibility of using metakaolinite-based geopolymer complexed reductant to implement a one-step procedure for chromite ore processing residue cleanup.

In Situ Chemical Reduction - CLU-IN

In Situ Chemical Reduction at the Morses Pond Culvert, Wellesley, Massachusetts (Chromium) The Morses Pond Culvert Site is located in Wellesley, Massachusetts. The southern portion of the site includes an earthen railroad embankment, divided by a culvert into eastern and western portions.

Remediation of chromite ore processing residue using ...

Batch tests were conducted to assess the potential use of ferrous sulfate and calcium polysulfide for the remediation of chromite ore processing residue (COPR).

Chromium VI > Treatment Technologies - CLU-IN

Study of Microbial Chromium(VI) ... contamination from chromite ore processing residue ... progress of using FeSO 4 and MRC™ for the remediation of a ...

Remediation of chromite ore processing residue using ...

Remediation of chromite ore processing residue using ferrous sulfate and calcium polysulfide 107 2.4. PhysicochemicalA nalyses The elemental composition of the COPR samples was

Calcium polysulfide remediation of hexavalent chromium ...

Read "Calcium polysulfide remediation of hexavalent chromium contamination from chromite ore processing residue, Science of the Total Environment" on DeepDyve, the ...

Treatment of Hexavalent Chromium in Chromite Ore ...

... in chromite ore processing ... Waste Using a Mixed Reductant Solution of Ferrous Sulfate and ... of chromite ore processing residue using ferrous sulfate ...

Remediation of chromite ore processing residue using ...

Batch tests were conducted to assess the potential use of ferrous sulfate and calcium polysulfide for the remediation of chromite ore processing residue (COPR). The remediation process entails addition of ferrous sulfate or calcium polysulfide to chemically reduce hexavalent chromium [Cr(VI)] to

Chromium Ore Processing Residue - uniqueevent.in

Hydrogarnet: a host phase for Cr(VI) in chromite ore ... For understanding both the environmental behavior and developing remediation treatments for chromium ore processing residue (COPR) it is important to identify all the ...

Assessment of ferrous chloride and Portland cement for …

Chromite Ore Processing Residue (COPR) is an industrial waste containing up to 7% chromium (Cr) including up to 5% hexavalent chromium [Cr(VI)]. The remediation of COPR has …

Calcium polysulfide remediation of hexavalent chromium ...

Calcium polysulfide remediation of hexavalent chromium contamination from chromite ore processing residue. ... (VI)-contaminated land, e.g. using ferrous sulfate ...

Mahmoud Wazne - Google Scholar Citations

Effects of particle size and acid addition on the remediation of chromite ore processing residue using ferrous sulfate SC Jagupilla, DH Moon, M Wazne, C Christodoulatos, MG Kim Journal of Hazardous Materials 168 (1), 121-128, 2009

Assessment of ferrous chloride and Portland cement for …

Assessment of ferrous chloride and Portland cement for the remediation of chromite ore processing residue ... use of ferrous chloride alone and ... Remediation ...

Remediation of chromite ore processing residue using ...

Geosciences Journal Vol. 11, No. 2, p. 105 − 110, June 2007 Remediation of chromite ore processing residue using ferrous sulfate and calcium polysulfide ...

US20120053388A1 - Process for solubilizing, reducing and ...

Chromite Ore Processing Residue (COPR) is a waste product from historic chromium manufacturing. From the late 1800's to around 1970, hexavalent chromium (Cr(VI)) was produced from chromite ore by a high temperature, alkaline oxidation of the ore and subsequent extraction of …

MEDLINE Abstract - reference.medscape.com

View This Abstract Online; Effects of particle size and acid addition on the remediation of chromite ore processing residue using ferrous sulfate.

processing chromite ores - bondhumahal.in

Remediation of chromite ore processing residue … Remediation of chromite ore processing residue using ferrous sulfate and calcium polysulfide 107 2.4.

Assessment of ferrous chloride and Portland cement for …

Chromite Ore Processing Residue (COPR) is an industrial waste containing up to 7% chromium (Cr) including up to 5% hexavalent chromium [Cr(VI)]. The remediation of COPR has been challenging due to the slow release of Cr(VI) from a clinker like material and thereby the incomplete detoxification of Cr(VI) by chemical reagents. The use of sulfur based reagents such as ferrous sulfate and calcium ...