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Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/1533

Title: Assessment of Chromium Pollution at Nuasahi-Baula Mines, Orissa
Authors: Equeenuddin, Sk. Md.
Kishan, B K
Keywords: chromite
Hexavalent chromium
Issue Date: Aug-2011
Citation: Seminar on Orissa‚Äôs Mineral, Environment and Geoscience Assessment, 2011 (OMEGA 2011), 11 - 12 August 2011
Abstract: There has been growing demand for chromite ores in recent years. In the opencast mines, the chromite as well as overburden material are dumped in the open ground without considering the environmental consequences. Hence, further leaching of chromium causes the environmental degradation in the vicinity of mines. This study is conducted in and around the chromite mines situated in the Nuasahi-Baula igneous complex for assessing the Cr pollution. Hexavalent chromium was found between 2 and 6 ppb in groundwater and 8 to 36 ppb in mine discharges. The total chromium ranged between 2 and 7 ppb in groundwater and 9 to 42 ppb in mine discharge water. The goethite rich overburden material at chromite mines is an efficient sink for the chromate anion. Leaching experiments using a saline solution, phosphate solution and tap water showed that phosphate solution release more hexavalent chromium compared to other two solutions. These results can be useful in evaluating natural attenuation...
Description: Copyright for this paper belongs to proceeding publisher
URI: http://hdl.handle.net/2080/1533
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