Optimization of the Electrochemical Extraction and Recovery of Metals from Electronic Waste Using Response Surface Methodology

Diaz, Luis A.; Clark, Gemma G.; Lister, Tedd E.

doi:10.1021/acs.iecr.7b01009

Title: Optimization of the Electrochemical Extraction and Recovery of Metals from Electronic Waste Using Response Surface Methodology

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Abstract

The rapid growth of the electronic waste can be viewed both as an environmental threat and as an attractive source of minerals that can reduce the mining of natural resources, and stabilize the market of critical materials, such as rare earths. Here in this article surface response methodology was used to optimize a previously developed electrochemical recovery process for base metals from electronic waste using a mild oxidant (Fe³⁺). Through this process an effective extraction of base metals can be achieved enriching the concentration of precious metals and significantly reducing environmental impacts and operational costs associated with the waste generation and chemical consumption. The optimization was performed using a bench-scale system specifically designed for this process. Operational parameters such as flow rate, applied current density and iron concentration were optimized to reduce the specific energy consumption of the electrochemical recovery process to 1.94 kWh per kg of metal recovered at a processing rate of 3.3 g of electronic waste per hour.

Authors:

^[1]; Clark, Gemma G. ^[1]; Lister, Tedd E. ^[1]

Idaho National Lab. (INL), Idaho Falls, ID (United States). Biological and Chemical Processing Dept.

Publication Date:: 2017-06-08

Research Org.:: Idaho National Lab. (INL), Idaho Falls, ID (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:: 1400265

Report Number(s):: INL/JOU-16-37878
Journal ID: ISSN 0888-5885; TRN: US1702983

Grant/Contract Number:: AC07-05ID14517

Resource Type:: Accepted Manuscript

Journal Name:: Industrial and Engineering Chemistry Research

Additional Journal Information:: Journal Volume: 56; Journal Issue: 26; Journal ID: ISSN 0888-5885

Publisher:: American Chemical Society (ACS)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Electrochemical recovery; Electronic waste; Metal recycling

Citation Formats


                    Diaz, Luis A., Clark, Gemma G., and Lister, Tedd E. Optimization of the Electrochemical Extraction and Recovery of Metals from Electronic Waste Using Response Surface Methodology.  United States: N. p., 2017. 
Web.  doi:10.1021/acs.iecr.7b01009.

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                    Diaz, Luis A., Clark, Gemma G., & Lister, Tedd E. Optimization of the Electrochemical Extraction and Recovery of Metals from Electronic Waste Using Response Surface Methodology.  United States.  https://doi.org/10.1021/acs.iecr.7b01009

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                    Diaz, Luis A., Clark, Gemma G., and Lister, Tedd E. Thu .  
"Optimization of the Electrochemical Extraction and Recovery of Metals from Electronic Waste Using Response Surface Methodology".  United States.  https://doi.org/10.1021/acs.iecr.7b01009.  https://www.osti.gov/servlets/purl/1400265.

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@article{osti_1400265,

  title        = {Optimization of the Electrochemical Extraction and Recovery of Metals from Electronic Waste Using Response Surface Methodology},

  author       = {Diaz, Luis A. and Clark, Gemma G. and Lister, Tedd E.},

  abstractNote = {The rapid growth of the electronic waste can be viewed both as an environmental threat and as an attractive source of minerals that can reduce the mining of natural resources, and stabilize the market of critical materials, such as rare earths. Here in this article surface response methodology was used to optimize a previously developed electrochemical recovery process for base metals from electronic waste using a mild oxidant (Fe3+). Through this process an effective extraction of base metals can be achieved enriching the concentration of precious metals and significantly reducing environmental impacts and operational costs associated with the waste generation and chemical consumption. The optimization was performed using a bench-scale system specifically designed for this process. Operational parameters such as flow rate, applied current density and iron concentration were optimized to reduce the specific energy consumption of the electrochemical recovery process to 1.94 kWh per kg of metal recovered at a processing rate of 3.3 g of electronic waste per hour.},

  doi          = {10.1021/acs.iecr.7b01009},

  journal      = {Industrial and Engineering Chemistry Research},

  number       = 26,

  volume       = 56,

  place        = {United States},

  year         = {2017},

  month        = {6}

}

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