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Browsing School of Engineering by Author "Jagupilla, Santhi Chandra"

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Assessment of calcium polysulfide for the remediation of hexavalent chromium in chromite ore processing residue (COPR)

Wazne, Mahmoud; Jagupilla, Santhi Chandra; Moon, Deok Hyun; Jagupilla, Sarath Chandra; Christodoulatos, Christos; Kim, Min Gyu (2016-03-01)

Bench scale and pilot scale treatability studies were conducted to evaluate the remediation of hexavalent chromium [Cr(VI)] in chromite ore processing residue (COPR) using calcium polysulfide. The results from the bench ...
Comparative study of nano zerovalent iron, micro zerovalent iron and emulsified nano zerovalent iron for the remediation of TCE and Cr(VI) contaminated groundwater

Wazne, Mahmoud; Jagupilla, Santhi Chandra; Liu, Xuyang; Rabah, Nidal; Lazar, Brendan; Su, Tsan-Liang; Christodoulatos, Christos (2017-12-11)

Groundwater pollution by volatile organic contaminants (VOC) and heavy metals is a serious environmental problem and the application of zero valent iron (ZVI) is one of the more promising solutions. The purpose of this ...
Leaching Mechanisms of Cr(VI) from Chromite Ore Processing Residue

Wazne, Mahmoud; Jagupilla, Santhi Chandra; Moon, Deok Hyun; Christodoulatos, Christos; Koutsospyros, Agamemnon (2016-03-01)

Batch leaching tests, qualitative and quantitative x-ray powder diffraction (XRPD) analyses, and geochemical modeling were used to investigate the leaching mechanisms of Cr(VI) from chromite ore processing residue (COPR) ...
Particle size and pH effects on remediation of chromite ore processing residue using calcium polysulfide (CaS5)

Moon, Deok Hyun; Wazne, Mahmoud; Jagupilla, Santhi Chandra; Christodoulatos, Christos; Kim, Min Gyu; Koutsospyros, Agamemnon (2016-03-01)

A long-term bench scale treatability study was performed to assess the ability to remediate chromite ore processing residue (COPR) using calcium polysulfide (CaS5). COPR materials were characterized with respect to particle ...
Remediation of chromite ore processing residue using ferrous sulfate and calcium polysulfide

Wazne, Mahmoud; Moon, Deok Hyun; Jagupilla, Santhi Chandra; Christodoulatos, Christos; Dermatas, Dimitris; Chrysochoou, Maria (2016-03-01)

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 ...

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