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Performance analysis and production of aromatics for ex situ catalytic pyrolysis of engineered WEEE
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
Division of Bioeconomy and Health, Department of Biorefinery and Energy, RISE Research Institutes of Sweden AB, SE-941 28 Piteå, Sweden, AB.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.ORCID iD: 0000-0001-9884-1278
Department of System Transition and Service Innovation, Unit of Resources from Waste, RISE Research Institutes of Sweden AB, SE-114 86 Stockholm, Sweden, AB.
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2024 (English)In: Journal of Analytical and Applied Pyrolysis, ISSN 0165-2370, E-ISSN 1873-250X, Vol. 179, article id 106510Article in journal (Refereed) Published
Abstract [en]

Ex situ catalytic pyrolysis of engineered waste electrical and electronic equipment (WEEE) was conducted in a two-stage reactor using HZSM-5 catalyst. The effect of the catalysis temperature and the catalyst-to-feedstock (C/F) ratio on products yield, gas and oil composition, and products characterization were investigated in this study. Results indicated that lower reforming temperature and C/F ratio favored organic fractions production. The highest yield of organic fraction was obtained at a catalysis temperature of 450 °C and at a C/F ratio of 0.15, corresponding to 28.5 and 27.4 wt %, respectively. The highest selectivity toward aromatic hydrocarbons and the lowest TAN value of the organic fraction were obtained at a catalysis temperature of 450 °C and a C/F ratio of 0.2, respectively. Most of the alkali and transition metals and 23 % of Br remained in the solid residue after the catalytic pyrolysis of low-grade electronic waste (LGEW).

Place, publisher, year, edition, pages
Elsevier BV , 2024. Vol. 179, article id 106510
Keywords [en]
Aromatics, C/F ratio, Catalytic pyrolysis, HZSM-5, Reforming temperature, WEEE
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-346164DOI: 10.1016/j.jaap.2024.106510ISI: 001217955700001Scopus ID: 2-s2.0-85190944883OAI: oai:DiVA.org:kth-346164DiVA, id: diva2:1855949
Note

QC 20240506

Available from: 2024-05-03 Created: 2024-05-03 Last updated: 2025-02-18Bibliographically approved

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Gulshan, SaminaYang, HanminYang, Weihong

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