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A preliminary study on leachability of chromium from a contaminated site
Author(s) -
Kanchinadham Sri Bala Kameswari,
Loganathan Vidhya Devi,
Kalyanaraman Chitra
Publication year - 2013
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.11722
Subject(s) - toxicity characteristic leaching procedure , chromium , leaching (pedology) , environmental remediation , chromite , environmental chemistry , contamination , chemistry , soil contamination , hazardous waste , acetic acid , mineral processing , nuclear chemistry , waste management , metallurgy , environmental science , soil water , heavy metals , materials science , engineering , soil science , ecology , biology , biochemistry
In the present article, chromite ore processing residue (COPR) and soil samples were collected from a chromium contaminated site in Tamil Nadu State, India. Around 155.02 and 28.01 mg g −1 of Cr(VI) was present in COPR and soil samples, respectively. Leachability studies were carried out to assess the leachability of Cr(VI) and Cr(III) from COPR and soil samples following the toxicity characteristic leaching procedure (TCLP) test protocol using (i) acetic acid and (ii) water as leaching medium. Cr(VI) had leached out in both the mediums, whereas Cr(III) leached only in acetic acid as leaching medium since Cr(III) is insoluble at pH > 6. TCLP test results are requisite to assess the extent of leaching of chromium from the contaminated soil or COPR and are a helpful tool for implementation of remediation measures to avoid further contamination. © 2012 American Institute of Chemical Engineers Environ Prog, 32: 1096–1100, 2013