Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Recovery and Reuse of Chromium Ions from Tannery Wastewater by Precipitation Reaction Method

Version 1 : Received: 2 September 2020 / Approved: 3 September 2020 / Online: 3 September 2020 (04:54:26 CEST)

How to cite: Tabidi, M. Recovery and Reuse of Chromium Ions from Tannery Wastewater by Precipitation Reaction Method. Preprints 2020, 2020090057 (doi: 10.20944/preprints202009.0057.v1). Tabidi, M. Recovery and Reuse of Chromium Ions from Tannery Wastewater by Precipitation Reaction Method. Preprints 2020, 2020090057 (doi: 10.20944/preprints202009.0057.v1).

Abstract

Abstract The global concern about the leather industries is increasing as the leather industries grow bigger each year. These industries face a very challenging task with an increase in stringent pollution control regulation enforced by various bodies due to environmental concern and human risks. The chromium salts are the most widely used chemical for the tanning process in leather industries, about 35% of chromium used for the tanning process remain as metal and discharge to wastewater stream. The removal and recovery of this quantity of wasted chromium are necessary for environmental pollution control and economic reason. This paper sheds light on the chromium recovery and reuse system of Chromium salts in tanning wastewater by using NaOH as an effective chemical precipitation method to regenerate chromium solution, adapted chrome recovery plant, and evaluated the system technically and economically.

Subject Areas

Chromium; precipitation; tanning; leather industries; wastewater; sodium hydroxide

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