Chromium Removal from the Tannery Wastewater Using Indigenous Adsorbent

Abstract

Tannery is recognized as high-strength waste-generating industry. In tannery, leather processing involves a series of chemical treatments and mechanical operations to attain the prescribed characteristics. Inapt disposal of solid and liquid waste from the tannery cause a serious environmental pollution. Chromium containing wastewater is generated from chrome tanning operation which is the most hazardous pollutants released to the environment. Treatment of highchromium-containing wastewater is a major concern in leather processing. In this study, indigenous adsorbent was investigated to remove the metals, especially chromium from the chrome tanning wastewater. The prepared adsorbent was directly mixed with chrome tanning wastewater. Various parameters such as adsorbent dose and contact time were optimized in batchwise technique. The maximum removal of chromium was attained 99.9%. The use of indigenous adsorbent for the removal of chromium could be better instead of conventional methods.