EFFECT OF CHROMATE ION ON ZINC ELECTROWINNING FROM ACID SULFATE ELECTROLYTE

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Title:	EFFECT OF CHROMATE ION ON ZINC ELECTROWINNING FROM ACID SULFATE ELECTROLYTE
Authors:	LIN,JC;TSAI,SL
Contributors:	機械工程學系
Keywords:	REDUCTION;CHROMIUM
Date:	1994
Issue Date:	2010-06-29 18:07:38 (UTC+8)
Publisher:	中央大學
Abstract:	The effect of chromate ion and its interaction with antimony and glue on zinc electrowinning from acid sulphate electrolyte were studied. During electrolysis at 430 A m-2 and 45-degrees-C, the chromate ion was found to polarize the cathodic reaction resulting in a refined zinc deposit having a morphology featuring a vertical orientation of the zinc platelets. Although chromium did not codeposit, the current efficiency for zinc deposition was dramatically decreased in the presence of > 1000 mg dm-3. This effect became more pronounced when the electrolyte also contained additives such as antimony and glue.
Relation:	JOURNAL OF APPLIED ELECTROCHEMISTRY
Appears in Collections:	[Graduate Institute of Mechanical Engineering] journal & Dissertation

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