SCI和EI收录∣中国化工学会会刊

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

• Festschrift in Honor of Professor Gordon McKay on occasion of his retirement • Previous Articles     Next Articles

Leaching of Electronic Waste Using Biometabolised Acids

M. Saidan, B. Brown, M. Valix   

  1. 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:2012-08-17 Published:2012-06-28
  • Supported by:
    Supported by Australian Research Council's Discovery Projects fundings scheme(DP1096342)

Leaching of Electronic Waste Using Biometabolised Acids

M. Saidan, B. Brown, M. Valix   

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

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

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