Tanning industries are one of the main economic activities in Bangladesh. It has been well documented that wastewater discharged from tanneries without appropriate treatment results in detrimental effects on the ecosystem. No ecotoxicity evaluation of any aquatic environment in Bangladesh has been conducted so far. In this study a battery of toxicity bioassays and chemical analysis were carried...

Reaction kinetics of benzid ine oxidation with ClO 2 in the wastewater was investigated systematically by detecting concentrations of benzid ine with HPLC at regular intervals. The results show that the reaction was firstorder with respect to both ClO2 and benzid ine, and the entire reaction was of second-order. Under condition of pH 6.5 and water temperature 298K, the second-order reaction rat...

The application of isolated bacterial culture as biological tool for hexavalent chromium removal from tannery industry waste water was investigated. A number of bacteria tolerant to high levels of chromate (>400μgml) were isolated from tannery effluents. These isolates showed varying degree of Cr (VI) reduction under oxic and anoxic conditions at room temperature. Ten isolates were found to be ...

Abstract The tannery industry inevitably generates toxic and catastrophic wastewater, which results in a huge threat to public health water resources. Therefore, this work aimed synthesize parthenium hysterophorus-based biochar–Fe 3 O 4 composite for removal of Cr(VI) from wastewater under full factorial experimental designs the Box–Behnken, was analyzed using response surface methodology four ...