Leaching of Electronic Waste Using Biometabolised Acids

›› 2012, Vol. 20 ›› Issue (3): 530-534.

• 香港科技大学化学与生物分子工程系戈登·麦凯教授退休纪念专刊 • 上一篇下一篇

Leaching of Electronic Waste Using Biometabolised Acids

M. Saidan, B. Brown, M. Valix

Material and Mineral Processing Research Unit, School of Chemical and Biomolecular Engineering, The Univer-sity of Sydney, NSW 2006, Australia

收稿日期:2012-02-02 修回日期:2012-05-04 出版日期:2012-06-28 发布日期:2012-08-17
通讯作者: M. Valix, E-mail: Marjorie.valix@sydney.edu.au
基金资助:
Supported by Australian Research Council's Discovery Projects fundings scheme(DP1096342)

Leaching of Electronic Waste Using Biometabolised Acids

M. Saidan, B. Brown, M. Valix

Material and Mineral Processing Research Unit, School of Chemical and Biomolecular Engineering, The Univer-sity of Sydney, NSW 2006, Australia

Received:2012-02-02 Revised:2012-05-04 Online:2012-06-28 Published:2012-08-17
Supported by:
Supported by Australian Research Council's Discovery Projects fundings scheme(DP1096342)

摘要/Abstract

摘要： The revolution in information and communication technology has brought huge technical benefits and wealth,but has created a major global problem:the generation of vast amounts of electronic waste,or e-waste through product obsolesce.The challenge in managing e-waste will be in developing sustainable recycling technologies that are able to address the volume and complexity of this waste using cost effective and ecologically sensitive methods.In this study,the capability of microorganism metabolic acids in dissolving the metallic fractions from waste printed circuit boards was examined.Several factors were considered in the examination of the activity of the acids including secondary reactions,solution pH,temperature and the nature of ligands in solutions(or bioacid constituents).The leaching tests were conducted ex-situ,using synthetic organic acids.Leaching was performed for periods of up to 6 h at 70-90℃ and 1000 r·min^-1.

关键词: bioleaching, e-waste, organic acids, secondary reactions, copper

Abstract: The revolution in information and communication technology has brought huge technical benefits and wealth,but has created a major global problem:the generation of vast amounts of electronic waste,or e-waste through product obsolesce.The challenge in managing e-waste will be in developing sustainable recycling technologies that are able to address the volume and complexity of this waste using cost effective and ecologically sensitive methods.In this study,the capability of microorganism metabolic acids in dissolving the metallic fractions from waste printed circuit boards was examined.Several factors were considered in the examination of the activity of the acids including secondary reactions,solution pH,temperature and the nature of ligands in solutions(or bioacid constituents).The leaching tests were conducted ex-situ,using synthetic organic acids.Leaching was performed for periods of up to 6 h at 70-90℃ and 1000 r·min^-1.

Key words: bioleaching, e-waste, organic acids, secondary reactions, copper

M. Saidan, B. Brown, M. Valix. Leaching of Electronic Waste Using Biometabolised Acids[J]. , 2012, 20(3): 530-534.

参考文献

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Leaching of Electronic Waste Using Biometabolised Acids

Leaching of Electronic Waste Using Biometabolised Acids

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