Abstract
Leather tanning consumes a huge quantity of water which ultimately goes to the environment as wastewater and degrades the environment. The study deals with the utilization of spent tea leaves as the adsorbent for the reduction of Biochemical Oxygen Demand (BOD) from tannery wastewater. The characteristics of raw effluent like initial COD, BOD, pH, and EC were measured. The experiments were carried out in the batch process for simplicity. The maximum percentage of BOD reduction was found 85.88 at 05 mg/l dose of adsorbent. The results of BOD reduction follow the Langmuir and Freundlich adsorption isotherm.
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