Treatment of tannery wastewater using “Waste” Fe(III)/Cr(III) hydroxide
- 1 September 1994
- journal article
- research article
- Published by Taylor & Francis in International Journal of Environmental Studies
- Vol. 46 (4) , 311-321
- https://doi.org/10.1080/00207239408710935
Abstract
“Waste” Fe(III)/Cr(III) hydroxide sludge from a fertilizer industry has been used for the treatment of tannery wastewater. Parameters studied include agitation time, adsorbent dosage and pH. The efficiency of Fe(III)/Cr(III) hydroxide is compared with a conventional adsorbent, ferric chloride. The per cent removal of color, chromium (III), chemical oxygen demand (COD), sodium, potassium and total solids were 97, 98, 69, 88, 34 and 93, respectively, by 4.0 g of Fe(III)/Cr(III) hydroxide sludge per 100 ml of 1:1 (v/v) wastewater at pH 6.0, adjusted with lime.Keywords
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