Authors : Anower Hossain Shawon; Md. Mahmudul Hosain; Muntahin Araf; Md. Yasin

Volume/Issue : Volume 11 - 2026, Issue 7 - July

Google Scholar : https://tinyurl.com/35jrcp97

Scribd : https://tinyurl.com/33uubm47

DOI : https://doi.org/10.38124/ijisrt/26jul1673

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Abstract : Heavy metal contamination from tannery industries in the Savar Hemayetpur area of Dhaka, Bangladesh, poses serious environmental and public health risks. This study evaluated the heavy metal load of raw tannery wastewater and the performance of three low-cost adsorbents peanut husk charcoal, natural zeolite, and fly ash in removing chromium, copper, zinc, and lead from tannery wastewater collected from the BSCIC Tannery Industrial Estate, Hemayetpur, Savar, Bangladesh. Under controlled laboratory conditions, batch adsorption experiments were executed, and the concentrations of heavy metals were quantified using a DR6000 UV-Vis spectrophotometer. The analysis showed that the levels of heavy metals in the untreated wastewater exceeded the permissible thresholds set by the Bangladesh Department of Environment and the World Health Organization. After the adsorption treatment, all tested adsorbents exhibited notable reductions in metal concentrations. Among them, natural zeolite achieved the highest removal efficiency, especially for chromium. Peanut husk and fly ash also performed well in adsorption. These results indicate that low-cost adsorbents present an effective, sustainable, and economically viable solution for treating heavy metal contaminated tannery wastewater, with significant potential for large scale industrial wastewater treatment applications.

Keywords : Affordable, Adsorption, Fly Ash, Heavy Metals, Natural Zeolite, Peanut Husk Charcoal, Tannery Wastewater.

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