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dc.contributor.authorVeksha, Andreien_US
dc.contributor.authorYin, Keen_US
dc.contributor.authorMoo, James Guo Shengen_US
dc.contributor.authorOh, Wen-Daen_US
dc.contributor.authorAhamed, Ashiqen_US
dc.contributor.authorChen, Wen Qianen_US
dc.contributor.authorWeerachanchai, Piyaraten_US
dc.contributor.authorGiannis, Apostolosen_US
dc.contributor.authorLisak, Grzegorzen_US
dc.identifier.citationVeksha, A., Yin, K., Moo, J. G. S., Oh, W., Ahamed, A., Chen, W. Q., Weerachanchai, P., Giannis, A. & Lisak, G. (2020). Processing of flexible plastic packaging waste into pyrolysis oil and multi-walled carbon nanotubes for electrocatalytic oxygen reduction. Journal of Hazardous Materials, 387, 121256-.
dc.description.abstractFlexible plastic packaging waste causes serious environmental issues due to challenges in recycling. This study investigated the conversion of flexible plastic packaging waste with 11.8 and 27.5 wt.% polyethylene terephthalate (PET) (denoted as PET-12 and PET-28, respectively) into oil and multi-walled carbon nanotubes (MWCNTs). The mixtures were initially pyrolyzed and the produced volatiles were processed over 9.0 wt.% Fe2O3 supported on ZSM-5 (400 °C) to remove oxygenated hydrocarbons (catalytic cracking of terephthalic and benzoic acids) that deteriorate oil quality. The contents of oxygenated hydrocarbons were decreased in oil from 4.6 and 9.4 wt.% per mass of PET-12 and PET-28, respectively, to undetectable levels. After catalytic cracking, the oil samples had similar contents of gasoline, diesel and heavy oil/wax fractions. The non-condensable gas was converted into MWCNTs over 0.9 wt.% Ni supported on CaCO3 (700 °C). The type of plastic packaging influenced the yields (2.4 and 1.5 wt.% per mass of PET-12 and PET-28, respectively) and the properties of MWCNTs due to the differences in gas composition. Regarding the electrocatalytic application, both MWCNTs from PET-12 and PET-28 outperformed commercial MWCNTs and Pt-based electrodes during oxygen evolution reaction, suggesting that MWCNTs from flexible plastic packaging can potentially replace conventional electrode materials.en_US
dc.description.sponsorshipEconomic Development Board (EDB)en_US
dc.description.sponsorshipNanyang Technological Universityen_US
dc.relation.ispartofJournal of Hazardous Materialsen_US
dc.rights© 2019 Elsevier B.V. All rights reserved.en_US
dc.subjectEngineering::Civil engineeringen_US
dc.titleProcessing of flexible plastic packaging waste into pyrolysis oil and multi-walled carbon nanotubes for electrocatalytic oxygen reductionen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.contributor.researchResidues and Resource Reclamation Centreen_US
dc.subject.keywordsCatalytic Oil Upgradingen_US
dc.description.acknowledgementThis research is supported by the Nestlé Research funding. The authors would also like to acknowledge the Nanyang Environment and Water Research Institute, Nanyang Technological University (Singapore) and Economic Development Board (Singapore) for financial support of this researchen_US
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