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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/3858
Title: A novel approach for reducing toxic emissions during high temperature processing of electronic waste
Authors: Saini R.
Khanna R.
Dutta R.K.
Cayumil R.
Ikram-Ul-Haq M.
Agarwala V.
Ellamparuthy G.
Jayasankar K.
Mukherjee P.S.
Sahajwalla V.
Published in: Waste Management
Abstract: A novel approach is presented to capture some of the potentially toxic elements (PTEs), other particulates and emissions during the heat treatment of e-waste using alumina adsorbents. Waste PCBs from mobile phones were mechanically crushed to sizes less than 1 mm; their thermal degradation was investigated using thermo-gravimetric analysis. Observed weight loss was attributed to the degradation of polymers and the vaporization of organic constituents and volatile metals. The sample assembly containing PCB powder and adsorbent was heat treated at 600 °C for times ranging between 10 and 30 min with air, nitrogen and argon as carrier gases. Weight gains up to ?17% were recorded in the adsorbent thereby indicating the capture of significant amounts of particulates. The highest level of adsorption was observed in N2 atmosphere for small particle sizes of alumina. SEM/EDS results on the adsorbent indicated the presence of Cu, Pb, Si, Mg and C. These studies were supplemented with ICP-OES analysis to determine the extent of various species captured as a function of operating parameters. This innovative, low-cost approach has the potential for utilization in the informal sector and/or developing countries, and could play a significant role in reducing toxic emissions from e-waste processing towards environmentally safe limits. © 2017 Elsevier Ltd
Citation: Waste Management (2017), 64(): 182-189
URI: https://doi.org/10.1016/j.wasman.2017.02.023
http://repository.iitr.ac.in/handle/123456789/3858
Issue Date: 2017
Publisher: Elsevier Ltd
Keywords: Adsorbent
E-waste
Particulates
Potentially toxic emissions
ISSN: 0956053X
Author Scopus IDs: 18134816600
7202996670
47161194700
56270704800
36450493400
7005242439
57193547266
26024759600
57197990431
7004091881
Author Affiliations: Saini, R., Centre of Excellence: Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, India, Centre for Sustainable Materials Research and Technology (SMaRT), School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
Khanna, R., Centre for Sustainable Materials Research and Technology (SMaRT), School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
Dutta, R.K., Centre of Excellence: Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, India, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Cayumil, R., Centre for Sustainable Materials Research and Technology (SMaRT), School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
Ikram-Ul-Haq, M., Centre for Sustainable Materials Research and Technology (SMaRT), School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
Agarwala, V., Centre of Excellence: Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Ellamparuthy, G., Institute of Minerals and Materials Technology (CSIR), Bhubaneswar, Odisha 751013, India
Jayasankar, K., Institute of Minerals and Materials Technology (CSIR), Bhubaneswar, Odisha 751013, India
Mukherjee, P.S., Institute of Minerals and Materials Technology (CSIR), Bhubaneswar, Odisha 751013, India
Sahajwalla, V., Centre for Sustainable Materials Research and Technology (SMaRT), School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
Funding Details: Authors gratefully acknowledge Department of Science and Technology (DST) India and Department of Industry, Innovation, Science, Research and Tertiary Education, Australia for providing financial support for this project under the Australia-India Strategic Research Fund Round 6. The authors would like to express their gratitude to the Institute Instrumentation Centre of IIT Roorkee for the utilization of instrumental facilities, and for the technical support of the Electron Microscope units and ICP Laboratory of the Mark Wainwright Analytical Centre, University of New South Wales Sydney.
Corresponding Author: Khanna, R.; Centre for Sustainable Materials Research and Technology (SMaRT), School of Materials Science and Engineering, The University of New South WalesAustralia; email: ritakhanna@unsw.edu.au
Appears in Collections:Journal Publications [CY]

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