Assessing the Applicability of Gravity Separation for Recycling of Non‐Metal Fraction from Waste Printed Circuit Boards
Source abstract
Abstract
Abstract Printed circuit boards (PCB) are one of the most studied electronic waste streams due to the presence of high‐value metals. The rejects from waste PCB recycling, also known as a non‐metal fraction (NMF), are usually sent to landfill. This work explores the applicability of gravity separation, widely used in the mineral processing industry, to separate organic and inorganic components in the NMF. The float‐sink test is conducted to understand the gravity separation performance, and the results show that a 47% yield at 86% organic content with 70% combustible recovery can be obtained using dense media separation. The washability behavior of NMF is assessed using different washability indices standard in the coal industry; and the material is classified as difficult‐to‐clean. The float‐sink products show the concentration of organic stream in −1.8 g cm−3 range, fiberglass in +2.0–2.5 g cm−3 range, and metals in +2.5 g cm−3 range. The recovery of these components will facilitate the concept of the circular economy and promote sustainability.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Recycling and Waste Management Techniques · Extraction and Separation Processes · Microplastics and Plastic Pollution
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Ronin8 Technologies Ltd. 517–6350 Stores Road Vancouver British Columbia V6T 1Z4 Canada
Ronin8 Technologies Ltd. 2900‐550 Burrard Street Vancouver British Columbia V6C 0A3 Canada
References (42)
Show source-provided references
1. 10.1177/0734242X1668260710.1177/0734242X16682607 ↗
2. 10.1016/j.jenvman.2018.06.01910.1016/j.jenvman.2018.06.019 ↗
3. 10.1016/j.wasman.2018.06.02210.1016/j.wasman.2018.06.022 ↗
4. 10.1016/j.wasman.2008.06.03510.1016/j.wasman.2008.06.035 ↗
5. 10.1016/S0921-3449(98)00022-610.1016/S0921-3449(98)00022-6 ↗
6. 10.1016/j.wasman.2004.09.00910.1016/j.wasman.2004.09.009 ↗
7. 10.1016/j.wasman.2017.08.04910.1016/j.wasman.2017.08.049 ↗
8. 10.1021/acs.jpcc.5b0423710.1021/acs.jpcc.5b04237 ↗
9. A.Vidyadhar A.Das “Kinetics and efficacy of froth flotation for the recovery of metal values from pulverized printed circuit boards ” in Int. Miner. Process. Congr. 26th New Delhi2012 pp.236–243.
10. 10.1016/j.jclepro.2016.04.00410.1016/j.jclepro.2016.04.004 ↗
11. Namias J. · 2013
12. 10.1016/B978-0-12-816190-6.00010-810.1016/B978-0-12-816190-6.00010-8 ↗
13. 10.13005/ojc/31011210.13005/ojc/310112 ↗
14. 10.1016/j.proenv.2016.02.02210.1016/j.proenv.2016.02.022 ↗
15. Jie G. · ES Energy Environ. · 2018 · 1 · 80
16. Hongjun K. · Eng. Sci. · 2018 · 1 · 78
17. Yaoguang G. · Eng. Sci. · 2018 · 4 · 65
18. Jie G. · ES Energy Environ. · 2019 · 5 · 94
19. 10.1016/j.wasman.2014.09.02010.1016/j.wasman.2014.09.020 ↗
20. 10.1016/j.jclepro.2016.07.13110.1016/j.jclepro.2016.07.131 ↗
21. 10.1016/j.wasman.2016.08.01010.1016/j.wasman.2016.08.010 ↗
22. 10.1016/j.resconrec.2019.03.00810.1016/j.resconrec.2019.03.008 ↗
23. 10.4172/2252-5211.100035510.4172/2252-5211.1000355 ↗
24. M. E.Holuszko “Washability characteristics of British Columbia Coals ” 1994. Available:http://cmscontent.nrs.gov.bc.ca/geoscience/PublicationCatalogue/Paper/BCGS_P1994‐02.pdf(Accessed: 19 November2019[Online]).
25. 10.1080/15567036.2017.134773010.1080/15567036.2017.1347730 ↗
26. 10.1016/0301-7516(94)00027-110.1016/0301-7516(94)00027-1 ↗
27. 10.1016/j.mineng.2003.10.00510.1016/j.mineng.2003.10.005 ↗
28. M. E.Holuszko D. A.Grieve “Washability characteristics of British Columbia coals ” in Geol. Fieldwork 1990 B. C. Minist. Energy Pet. Resour. Vol.1991–1 1990 pp.371–379.
29. 10.1016/0032-5910(84)85060-310.1016/0032-5910(84)85060-3 ↗
30. Fourie P. J. F. · J. South. Afr. Inst. Min. Metall. · 1980 · 80 · 357
31. 10.1016/S0892-6875(00)00023-610.1016/S0892-6875(00)00023-6 ↗
32. 10.17159/2411-9717/2016/v116n2a1210.17159/2411-9717/2016/v116n2a12 ↗
33. 10.1016/j.mineng.2019.03.01810.1016/j.mineng.2019.03.018 ↗
34. Yue Y. · Eng. Sci. · 2018 · 5 · 73
35. Nasrullah S. · Eng. Sci. · 2019 · 6 · 77
36. Kelley E. · 2016 · 197
37. Zsiros J. A. · 2010
38. 10.1016/j.wasman.2017.03.03010.1016/j.wasman.2017.03.030 ↗
39. ASTM International · 2012
40. 10.1108/0305612971037019610.1108/03056129710370196 ↗
41. T. D.Martin J. T.Creed C. A.Brockhoff Method 200.2 Revision 2.8: Sample Preparation Procedure for Spectrochemical Determination of Total Recoverable Elements in U.S. Environ. Prot. Agency Washington D.C. 1994. (Accessed: 22 September 2017. [Online]). Available:https://www.epa.gov/sites/production/files/2015‐08/documents/method_200‐2_rev_2‐8_1994.pdf.
42. 10.1016/j.wasman.2018.02.01010.1016/j.wasman.2018.02.010 ↗