Change search
ReferencesLink to record
Permanent link

Direct link
Investigation of the thermal decomposition of printed circuit boards (PCBs) via thermogravimetric analysis (TGA) and analytical pyrolysis (Py-GC/MS)
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0001-9831-6633
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0002-1837-5439
2015 (English)In: Journal of Analytical and Applied Pyrolysis, ISSN 0165-2370, E-ISSN 1873-250X, Vol. 115, 337-343 p.Article in journal (Refereed) Published
Abstract [en]

The purpose of this study is to experimentally investigate the pyrolytic behavior of printed circuit boards (PCBs) waste fraction at a temperature range of 400 °C to 900 °C by means of thermogravimetric analysis (TGA) and analytical pyrolysis (Py-GC/MS) was carried out. The experimental results reveal that the chemical composition of the PCBs and the relatively high ash content (=79% w/w) are strongly connected with the high quantity of metals and ceramic materials. The main decomposition of PCBs occurs between 250 °C and 370 °C. The pyrolysis of PCBs showed a varying production of aromatic compounds such as phenol, bromophenol, styrene, methylstyrene, and bisphenol A as well as non-aromatic compounds such as acetone and bromomethane, which are strongly related with the initial chemical composition of PCBs. Moreover, Py-GC/MS revealed that temperature increase favours the production of aromatic hydrocarbons, while the phenol which is the most abundant compound produced, shows an opposite trend, as a result of its further decomposition to simpler products. Furthermore, brominated compounds produced, such as bromomethane and bromophenol, are derived from the flame retardant used during the manufacturing process and in that case the Py-GC/MS showed a slight decrease of brominated compounds with increase in temperature.

Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 115, 337-343 p.
Keyword [en]
e-Waste, PCBs, Printed circuit boards, Py-GC/MS, Pyrolysis, TGA, Acetone, Aromatic compounds, Aromatic hydrocarbons, Aromatization, Bromine compounds, Ceramic materials, Chemical analysis, Chemical compounds, Cracking (chemical), Decomposition, Phenols, Printed circuits, Styrene, Thermogravimetric analysis, Analytical pyrolysis, Chemical compositions, E-wastes, Manufacturing process, Printed circuit board (PCBs)
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-175080DOI: 10.1016/j.jaap.2015.08.012ISI: 000362610300038ScopusID: 2-s2.0-84942296049OAI: oai:DiVA.org:kth-175080DiVA: diva2:881895
Funder
Swedish Energy Agency, 36880-1
Note

QC 20151211

Available from: 2015-12-11 Created: 2015-10-09 Last updated: 2015-12-11Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Evangelopoulos, PanagiotisKantarelis, EfthymiosYang, Weihong
By organisation
Materials Science and Engineering
In the same journal
Journal of Analytical and Applied Pyrolysis
Materials Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 126 hits
ReferencesLink to record
Permanent link

Direct link