International Journal of Environmental Sciences

Volume 2 Issue 4 2012           Pages:2378- 2386

Impact of leaching from iron ore mines on terrestrial and aquatic environment

Author Information:

Verma. S.R  EIRA Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440020 (India)

Chaudhari. P.R  EIRA Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440020 (India)

Shanta Satyanaranyan  Ex-Deputy Director, WWT Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440020 (India)

ABSTRACT

Improper disposal of overburden (OB) and tailings causes severe soil and water pollution. Therefore present study was carried out on overburden, their leaching levels and their effect on nearby water environment at Chiria mines of West Singhbhum district of Jharkhand, India.  Studies revealed that the OB samples were neutral to marginally alkaline in nature (pH 7.2-7.6) with EC 0.07-0.09 ms/cm, Ca 0.75-1.30 mg/l, Mg 1.01-1.43 mg/l, Na 0.01-0.04 mg/l & K 0.08-0.12 mg/l. Low Cation Exchange Capacity & Nutrient content indicates poor productivity of overburden soil.  OB showed higher concentration of Fe along with Mn, Pb and Zn as a typical characteristic of iron ore. OB was leached with acidic and distilled water and showed the presence of heavy metals at higher concentrations in acidic and low concentrations in distill water extract. Total 12 water samples surrounding the mining area was collected for physicochemical, biological and heavy metal analysis. Results indicated only the presence of marginally higher concentrations of heavy metals. Sodium adsorption ratio and percent sodium were also evaluated in the leachate samples to observe feasibilty of its use for land application.

Keywords: Impacts, Heavy Metal, Overburden, Leaching, Soil Erosion

DOI: 10.6088/ijes.00202030119


© 2012 Copyright Verma. S.R et al, licensee IPA.This is an open access article distributed under the Creative Commons Attribution License (2.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The electronic version of the article can be downloaded below.

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