Resumen
High-temperature transformation studies were carried out on polymer-rich waste printed circuit boards (PCBs) in the temperature range of 750–1,350 °C in argon atmosphere. Copper-rich metallic fractions started to separate out as foils/droplets at temperatures above 950 °C producing significant quantities of carbonaceous residue. In-depth characterisation of the residue was carried out using X-ray diffraction, Raman spectroscopy, SEM/EDS, surface area analysis, and LECO measurements. The recovery of carbons from waste PCBs reached up to 25 % of total weight. These carbons generally had a disordered structure with 3–4 layers stacking along the c-axis. The presence of metals in the carbonaceous residue became negligibly small at 1,350 °C, significantly enhancing the quality of the carbonaceous product (carbon content: 52–74 wt%). This study has shown that potentially vast reserves of carbon could be recovered from e-waste through appropriate recycling, while minimising the impact of waste on the environment.
| Idioma original | English |
|---|---|
| Páginas (desde-hasta) | 75-84 |
| Número de páginas | 10 |
| Publicación | Journal of Sustainable Metallurgy |
| Volumen | 1 |
| N.º | 1 |
| DOI | |
| Estado | Published - 1 mar 2015 |
Huella dactilar
ASJC Scopus subject areas
- Metals and Alloys
- Mechanics of Materials
- Environmental Science (miscellaneous)
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Recycling Polymer-Rich Waste Printed Circuit Boards at High Temperatures : Recovery of Value-Added Carbon Resources. / Sahajwalla, V.; Cayumil, R.; Khanna, R.; Ikram-Ul-Haq, M.; Rajarao, R.; Mukherjee, P. S.; Hill, A.
En: Journal of Sustainable Metallurgy, Vol. 1, N.º 1, 01.03.2015, p. 75-84.Resultado de la investigación: Article
TY - JOUR
T1 - Recycling Polymer-Rich Waste Printed Circuit Boards at High Temperatures
T2 - Recovery of Value-Added Carbon Resources
AU - Sahajwalla, V.
AU - Cayumil, R.
AU - Khanna, R.
AU - Ikram-Ul-Haq, M.
AU - Rajarao, R.
AU - Mukherjee, P. S.
AU - Hill, A.
PY - 2015/3/1
Y1 - 2015/3/1
N2 - High-temperature transformation studies were carried out on polymer-rich waste printed circuit boards (PCBs) in the temperature range of 750–1,350 °C in argon atmosphere. Copper-rich metallic fractions started to separate out as foils/droplets at temperatures above 950 °C producing significant quantities of carbonaceous residue. In-depth characterisation of the residue was carried out using X-ray diffraction, Raman spectroscopy, SEM/EDS, surface area analysis, and LECO measurements. The recovery of carbons from waste PCBs reached up to 25 % of total weight. These carbons generally had a disordered structure with 3–4 layers stacking along the c-axis. The presence of metals in the carbonaceous residue became negligibly small at 1,350 °C, significantly enhancing the quality of the carbonaceous product (carbon content: 52–74 wt%). This study has shown that potentially vast reserves of carbon could be recovered from e-waste through appropriate recycling, while minimising the impact of waste on the environment.
AB - High-temperature transformation studies were carried out on polymer-rich waste printed circuit boards (PCBs) in the temperature range of 750–1,350 °C in argon atmosphere. Copper-rich metallic fractions started to separate out as foils/droplets at temperatures above 950 °C producing significant quantities of carbonaceous residue. In-depth characterisation of the residue was carried out using X-ray diffraction, Raman spectroscopy, SEM/EDS, surface area analysis, and LECO measurements. The recovery of carbons from waste PCBs reached up to 25 % of total weight. These carbons generally had a disordered structure with 3–4 layers stacking along the c-axis. The presence of metals in the carbonaceous residue became negligibly small at 1,350 °C, significantly enhancing the quality of the carbonaceous product (carbon content: 52–74 wt%). This study has shown that potentially vast reserves of carbon could be recovered from e-waste through appropriate recycling, while minimising the impact of waste on the environment.
KW - Disordered carbons
KW - E-waste
KW - PCBs
KW - Recycling
KW - Thermal transformations
UR - http://www.scopus.com/inward/record.url?scp=84934891802&partnerID=8YFLogxK
U2 - 10.1007/s40831-014-0002-4
DO - 10.1007/s40831-014-0002-4
M3 - Article
AN - SCOPUS:84934891802
VL - 1
SP - 75
EP - 84
JO - Journal of Sustainable Metallurgy
JF - Journal of Sustainable Metallurgy
SN - 2199-3823
IS - 1
ER -