Processing of spent tanning and chrome plating solutions for chromium recovery

Kumar, Vinay and Agrawal, A and Pandey, B D and Premchand, (1998) Processing of spent tanning and chrome plating solutions for chromium recovery. In: Seminar on Environmental & waste management: in non-ferrous metallurgical industries, 1998, NML Jamshedpur, India.

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Use of chromium in metal plating and leather tanning industries generates a lot of effluent containing Cr(III) and Cr(VI). Besides severe water pollution, substantial amount of chromium is lost due to the prevalent practice of removal-disposal technique followed world over. Processes based on recovery and reuse methodology are currently projected as ex¬cellent means of meeting the environmental regulations while producing chromium salts/solutions for recycling. This paper details the composi¬tion, conditions and quantity of spent liquors/effluents generated in elec¬troplating and leather tanning industries and their treatment by removal¬disposal as well as recovery-reuse methods. The approach based on pre¬cipitation, ion exchange and liquid-liquid extraction particularly for chro¬mium recovery is highlighted. The results of solvent extraction with D2EHPA and CYANEX 272 for chromium recovery from spent tanning baths are also summarised.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:
Uncontrolled Keywords:Chromium; Chrome electroplating; Leather tanning; Metal recovery; Solvent extraction
Divisions:Mineral Processing
ID Code:1547
Deposited On:13 Sep 2010 13:59
Last Modified:03 Jan 2012 16:57
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