A novel approach for reducing toxic emissions during high temperature processing of electronic waste

R. Saini, R. Khanna, R. K. Dutta, R. Cayumil, M. Ikram-Ul-Haq, V. Agarwala, G. Ellamparuthy, K. Jayasankar, P. S. Mukherjee, V. Sahajwalla

Resultado de la investigación: Article

6 Citas (Scopus)

Resumen

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.

Idioma originalEnglish
Páginas (desde-hasta)182-189
Número de páginas8
PublicaciónWaste Management
Volumen64
DOI
EstadoPublished - 1 jun 2017

Huella dactilar

aluminum oxide
PCB
degradation
informal sector
vaporization
argon
polymer
developing world
scanning electron microscopy
particle size
adsorption
atmosphere
nitrogen
metal
air
gas
cost
analysis
electronic waste
loss

ASJC Scopus subject areas

  • Waste Management and Disposal

Citar esto

Saini, R. ; Khanna, R. ; Dutta, R. K. ; Cayumil, R. ; Ikram-Ul-Haq, M. ; Agarwala, V. ; Ellamparuthy, G. ; Jayasankar, K. ; Mukherjee, P. S. ; Sahajwalla, V. / A novel approach for reducing toxic emissions during high temperature processing of electronic waste. En: Waste Management. 2017 ; Vol. 64. pp. 182-189.
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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.",
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Saini, R, Khanna, R, Dutta, RK, Cayumil, R, Ikram-Ul-Haq, M, Agarwala, V, Ellamparuthy, G, Jayasankar, K, Mukherjee, PS & Sahajwalla, V 2017, 'A novel approach for reducing toxic emissions during high temperature processing of electronic waste', Waste Management, vol. 64, pp. 182-189. https://doi.org/10.1016/j.wasman.2017.02.023

A novel approach for reducing toxic emissions during high temperature processing of electronic waste. / Saini, R.; Khanna, R.; Dutta, R. K.; Cayumil, R.; Ikram-Ul-Haq, M.; Agarwala, V.; Ellamparuthy, G.; Jayasankar, K.; Mukherjee, P. S.; Sahajwalla, V.

En: Waste Management, Vol. 64, 01.06.2017, p. 182-189.

Resultado de la investigación: Article

TY - JOUR

T1 - A novel approach for reducing toxic emissions during high temperature processing of electronic waste

AU - Saini, R.

AU - Khanna, R.

AU - Dutta, R. K.

AU - Cayumil, R.

AU - Ikram-Ul-Haq, M.

AU - Agarwala, V.

AU - Ellamparuthy, G.

AU - Jayasankar, K.

AU - Mukherjee, P. S.

AU - Sahajwalla, V.

PY - 2017/6/1

Y1 - 2017/6/1

N2 - 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.

AB - 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.

KW - Adsorbent

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KW - Particulates

KW - Potentially toxic emissions

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JF - Waste Management

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