The Catalytic role of nitrogen-doped carbon nanotubes in bioleaching copper from waste printed circuit boards

• Autorzy: Bai J. , Gu W. , Dai J. , Zhang C. , Yuan W. , Deng M. , Luo X. , Wang J.
• Języki publikacji: EN

Abstrakty

EN

The objective of this research was to investigate the catalytic role of nitrogen-doped carbon nanotubes (NCNTs) in a bioreactor that contained Acidithiobacillus ferrooxidans (A. ferrooxidans) and waste printed circuit boards (WPCB). Factors that could refl ect the results, such as pH, oxidation-reduction potential (ORP), Fe²⁺, and leaching rate of copper were detected and calculated in the bioleaching process. The results demonstrated that a certain amount of NCNTs had good compatibility with A. ferrooxidans, and it had the best consistency when added to 0.04g NCNTs in 50 ml solution. NCNTs could promote nearly 10% of copper leaching rate from WPCB by A. ferrooxidans compared with the blank group. When the NCNTs were treated by acid solution, its ability to promote the leaching rate of copper had a certain degree of decline (but not obvious), and it was about 2% lower than the group in which the NCNTs were not treated with acid. These phenomena could expand the application of NCNTs, and these could provide a basis for the next industrial application of A. ferrooxidans.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2016
• Tom: 25
• Numer: 3
• Opis fizyczny: p.951-957,fig.,ref.

Twórcy

autor

Bai J.

• Shanghai Collaborative Innovation Centre for WEEE Recycling, Shanghai 201209, PR China
• WEEE Research Centre of Shanghai Polytechnic University, Shanghai 201209, PR China

autor

Gu W.

• Shanghai Collaborative Innovation Centre for WEEE Recycling, Shanghai 201209, PR China
• WEEE Research Centre of Shanghai Polytechnic University, Shanghai 201209, PR China

autor

Dai J.

• School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209, PR China

autor

Zhang C.

• Shanghai Collaborative Innovation Centre for WEEE Recycling, Shanghai 201209, PR China
• WEEE Research Centre of Shanghai Polytechnic University, Shanghai 201209, PR China

autor

Yuan W.

• Shanghai Collaborative Innovation Centre for WEEE Recycling, Shanghai 201209, PR China
• WEEE Research Centre of Shanghai Polytechnic University, Shanghai 201209, PR China

autor

Deng M.

• Senlan Environmental (Shanghai) Co., Ltd, Shanghai 201204, PR China

autor

Luo X.

• Senlan Environmental (Shanghai) Co., Ltd, Shanghai 201204, PR China

autor

Wang J.

• Shanghai Collaborative Innovation Centre for WEEE Recycling, Shanghai 201209, PR China
• WEEE Research Centre of Shanghai Polytechnic University, Shanghai 201209, PR China

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Identyfikatory

DOI

10.15244/pjoes/61816