Characterization of Printed Circuit Boards for Metal and Energy Recovery after Milling and Mechanical Separation.
作者： Waldir A Bizzo , Renata A Figueiredo , Valdelis F de Andrade , None
DOI: 10.3390/MA7064555
关键词:
摘要: The proper disposal of electrical and electronic waste is currently a concern researchers environmental managers not only because the large volume such generated, but also heavy metals toxic substances it contains. This study analyzed printed circuit boards (PCBs) from discarded computers to determine their metal content characterized them as solid fuel. analysis showed that PCBs consist approximately 26% metal, made up mainly copper, lead, aluminum, iron tin, well other cadmium nickel. Comparison with results studies indicated concentration precious (gold silver) has declined over time. Analysis leachate revealed high concentrations giving residue characteristics hazardous waste. After milling PCBs, we found larger amounts were concentrated in smaller fractions, while lightest fraction, obtained by density separation, had gross calorific value 11 MJ/kg, although ash content. Milling followed separation proved potentially useful for recovery energy-rich fractions.
mdpi.com
core.ac.uk
harvard.edu
sci-hub.se 参考文章(24)
Alexander V. Feldman, Method for processing scrap of electronic instruments ,(1991)
Jae-Min Yoo, Jinki Jeong, Kyoungkeun Yoo, Jae-chun Lee, Wonbaek Kim, Enrichment of the metallic components from waste printed circuit boards by a mechanical separation process using a stamp mill. Waste Management. ,vol. 29, pp. 1132- 1137 ,(2009) , 10.1016/J.WASMAN.2008.06.035
C LEE, C CHANG, K FAN, T CHANG, An overview of recycling and treatment of scrap computers. Journal of Hazardous Materials. ,vol. 114, pp. 93- 100 ,(2004) , 10.1016/J.JHAZMAT.2004.07.013
Jun-qi Pan, Zhi-feng Liu, Guang-fu Liu, Shu-wang Wang, Hai-hong Huang, Recycling process assessment of mechanical recycling of printed circuit board Journal of Central South University of Technology. ,vol. 12, pp. 157- 161 ,(2005) , 10.1007/S11771-005-0031-Z
Dong Xiang, Peng Mou, Jinsong Wang, Guanghong Duan, Hong C. Zhang, Printed circuit board recycling process and its environmental impact assessment The International Journal of Advanced Manufacturing Technology. ,vol. 34, pp. 1030- 1036 ,(2007) , 10.1007/S00170-006-0656-6
Cristina Montejo, Carlos Costa, Pedro Ramos, María del Carmen Márquez, Analysis and comparison of municipal solid waste and reject fraction as fuels for incineration plants Applied Thermal Engineering. ,vol. 31, pp. 2135- 2140 ,(2011) , 10.1016/J.APPLTHERMALENG.2011.03.041
A. Das, A. Vidyadhar, S.P. Mehrotra, A novel flowsheet for the recovery of metal values from waste printed circuit boards Resources Conservation and Recycling. ,vol. 53, pp. 464- 469 ,(2009) , 10.1016/J.RESCONREC.2009.03.008
José Luciano Soares, André LB Oberziner, Humberto J José, Alírio E Rodrigues, Regina FPM Moreira, None, Carbon dioxide adsorption in Brazilian coals Energy & Fuels. ,vol. 21, pp. 209- 215 ,(2007) , 10.1021/EF060149H
M. Iji, S. Yokoyama, Recycling of Printed Wiring Boards with Mounted Electronic Components Circuit World. ,vol. 23, pp. 10- 15 ,(1997) , 10.1108/03056129710370196
J.M Heikkinen, J.C Hordijk, W de Jong, H Spliethoff, Thermogravimetry as a tool to classify waste components to be used for energy generation Journal of Analytical and Applied Pyrolysis. ,vol. 71, pp. 883- 900 ,(2004) , 10.1016/J.JAAP.2003.12.001