Abstract
The present study aims to examine chemical characteristics and heavy metal of tannery wastewater and sludge and to assess their influences on alterations in soil properties of disposal areas in terms of degree of heavy metal contamination and soil solution. Result revealed that soil layers exhibit greater values of soluble cations, anions, and electrical conductivity in tannery wastewater, sludge. Unlimited fluctuation in concentrations of heavy metals in soil profile was detected. Depending on estimated contamination factor (CF) and enrichment factor (EF), soil samples were found to be enriched and polluted with chromium. Simple correlation analysis showed significant progress between heavy metals and soil solution composition parameters. This proposes that both wastewater and sludge of tannery activities are accountable for altering properties of soil solution in term of chemistry and metal toxicity inducement into the soil atmosphere. Accordingly, tannery effluents, wastes, and sludge should not be allowed to be disposed into the environment without proper treatments.
Published Version
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