Study On The Electro-Refining Of Tin In Acid Solution From Electronic Waste

The tin metal could be retractable from wasted tin scrap, sludge, and wasted electroplated solution hydrometallurgical treatment, and purification process. In order to be used as resource of electronic devices, the retracted crude metal should be purified to the extent of higher than 99.9%. In this...

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Main Authors: Son Seong Ho, Park Sung Cheol, Kim Jin Hwa, Kim Yong Hwan, Lee Man Seung, Ahn Jae-Woo
Format: Article
Language:English
Published: Sciendo 2015-06-01
Series:Archives of Metallurgy and Materials
Subjects:
Tin
Online Access:http://www.degruyter.com/view/j/amm.2015.60.issue-2/amm-2015-0101/amm-2015-0101.xml?format=INT
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spelling doaj-art-de0906add75e4076ae5d7aa51ddaf9e02018-09-02T21:24:39ZengSciendoArchives of Metallurgy and Materials2300-19092015-06-016021217122010.1515/amm-2015-0101amm-2015-0101Study On The Electro-Refining Of Tin In Acid Solution From Electronic WasteSon Seong Ho0Park Sung Cheol1Kim Jin Hwa2Kim Yong Hwan3Lee Man Seung4Ahn Jae-Woo5 SURFACE TECHNOLOGY R SURFACE TECHNOLOGY R SURFACE TECHNOLOGY R ADVANCED PROCESS AND MATERIALS R DEPARTMENT OF ADVANCED MATERIAL SCIENCE AND ENGINEERING, MOKPO NATIONAL UNIVERSITY, MOKPO-SI, KOREA DEPARTMENT OF ADVANCED MATERIAL SCIENCE ENGINEERING, DAEJIN UNIVERSITY, POCHEON-SI, KOREAThe tin metal could be retractable from wasted tin scrap, sludge, and wasted electroplated solution hydrometallurgical treatment, and purification process. In order to be used as resource of electronic devices, the retracted crude metal should be purified to the extent of higher than 99.9%. In this study, tin electro-refining process was performed to purify the casted tin crude metal at various experimental conditions: at the current density of 3, 5A/dm2, and in various electrolytes such as hydrochloric acid, sulfuric acid and methansulfonic acid. Additional experiment was conducted using Rotating Disk Electrode (RDE) in order to investigate the rate determining step of tin electro-refining process. The current efficiency, 65.6%, was achievable at the condition of current density, 5A/dm2, and in the electrolyte of Hydrochloric acid. During tin electro-refining process, impurity dissolved from tin crude metal into the electrolyte was analyzed using Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES), and the result showed the concentration of impurity metal gradually increased. Quantitative analysis on casted tin crude metal showed that it consists of tin with 93.9 wt.% and several impurity metals of Ag, Bi, Pb, Cu, and etc. After tin electro-refining process, the purity of tin increased up to 99.985 wt.%.http://www.degruyter.com/view/j/amm.2015.60.issue-2/amm-2015-0101/amm-2015-0101.xml?format=INTElectro-refiningTinElectronic wasteRecyclingHigh purity
institution Open Data Bank
collection Open Access Journals
building Directory of Open Access Journals
language English
format Article
author Son Seong Ho
Park Sung Cheol
Kim Jin Hwa
Kim Yong Hwan
Lee Man Seung
Ahn Jae-Woo
spellingShingle Son Seong Ho
Park Sung Cheol
Kim Jin Hwa
Kim Yong Hwan
Lee Man Seung
Ahn Jae-Woo
Study On The Electro-Refining Of Tin In Acid Solution From Electronic Waste
Archives of Metallurgy and Materials
Electro-refining
Tin
Electronic waste
Recycling
High purity
author_facet Son Seong Ho
Park Sung Cheol
Kim Jin Hwa
Kim Yong Hwan
Lee Man Seung
Ahn Jae-Woo
author_sort Son Seong Ho
title Study On The Electro-Refining Of Tin In Acid Solution From Electronic Waste
title_short Study On The Electro-Refining Of Tin In Acid Solution From Electronic Waste
title_full Study On The Electro-Refining Of Tin In Acid Solution From Electronic Waste
title_fullStr Study On The Electro-Refining Of Tin In Acid Solution From Electronic Waste
title_full_unstemmed Study On The Electro-Refining Of Tin In Acid Solution From Electronic Waste
title_sort study on the electro-refining of tin in acid solution from electronic waste
publisher Sciendo
series Archives of Metallurgy and Materials
issn 2300-1909
publishDate 2015-06-01
description The tin metal could be retractable from wasted tin scrap, sludge, and wasted electroplated solution hydrometallurgical treatment, and purification process. In order to be used as resource of electronic devices, the retracted crude metal should be purified to the extent of higher than 99.9%. In this study, tin electro-refining process was performed to purify the casted tin crude metal at various experimental conditions: at the current density of 3, 5A/dm2, and in various electrolytes such as hydrochloric acid, sulfuric acid and methansulfonic acid. Additional experiment was conducted using Rotating Disk Electrode (RDE) in order to investigate the rate determining step of tin electro-refining process. The current efficiency, 65.6%, was achievable at the condition of current density, 5A/dm2, and in the electrolyte of Hydrochloric acid. During tin electro-refining process, impurity dissolved from tin crude metal into the electrolyte was analyzed using Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES), and the result showed the concentration of impurity metal gradually increased. Quantitative analysis on casted tin crude metal showed that it consists of tin with 93.9 wt.% and several impurity metals of Ag, Bi, Pb, Cu, and etc. After tin electro-refining process, the purity of tin increased up to 99.985 wt.%.
topic Electro-refining
Tin
Electronic waste
Recycling
High purity
url http://www.degruyter.com/view/j/amm.2015.60.issue-2/amm-2015-0101/amm-2015-0101.xml?format=INT
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