Enhanced biofuel production by co-pyrolysis of distiller's grains and waste plastics: a quantitative appraisal of kinetic behaviors and product characteristics

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dc.contributor.authorLi, Gang
dc.contributor.authorYang, Tenglun
dc.contributor.authorXiao, Wenbo
dc.contributor.authorYao, Xiaolong
dc.contributor.authorSu, Meng
dc.contributor.authorPan, Minmin
dc.contributor.authorWang, Xiqing
dc.contributor.authorLyu, Tao
dc.date.accessioned2023-10-06T13:18:30Z
dc.date.available2023-10-06T13:18:30Z
dc.date.issued2023-09-20
dc.description.abstractPyrolysis of biomass feedstocks can produce valuable biofuel, however, the final products may present excessive corrosion and poor stability due to the lack of hydrogen content. Co-pyrolysis with hydrogen-rich substances such as waste plastics may compensate for these shortcomings. In this study, the co-pyrolysis of a common biomass, i.e. distiller's grains (DG), and waste polypropylene plastic (PP) were investigated towards increasing the quantity and quality of the production of biofuel. Results from the thermogravimetric analyses showed that the reaction interval of individual pyrolysis of DG and PP was 124–471 °C and 260–461 °C, respectively. Conversely, an interaction effect between DG and PP was observed during co-pyrolysis, resulting in a slower rate of weight loss, a longer temperature range for the pyrolysis reaction, and an increase in the temperature difference between the evolution of products. Likewise, the Coats-Redfern model showed that the activation energies of DG, PP and an equal mixture of both were 42.90, 130.27 and 47.74 kJ mol−1, respectively. It thus follows that co-pyrolysis of DG and PP can effectively reduce the activation energy of the reaction system and promote the degree of pyrolysis. Synergistic effects essentially promoted the free radical reaction of the PP during co-pyrolysis, thereby reducing the activation energy of the process. Moreover, due to this synergistic effect in the co-pyrolysis of DG and PP, the ratio of elements was effectively optimized, especially the content of oxygen-containing species was reduced, and the hydrocarbon content of products was increased. These results will not only advance our understanding of the characteristics of co-pyrolysis of DG and PP, but will also support further research toward improving an efficient co-pyrolysis reactor system and the pyrolysis process itself.en_UK
dc.identifier.citationLi G, Yang T, Xiao W, et al., (2023) Enhanced biofuel production by co-pyrolysis of distiller's grains and waste plastics: a quantitative appraisal of kinetic behaviors and product characteristics, Chemosphere, Volume 342, November 2023, Article Number 140137en_UK
dc.identifier.eissn1879-1298
dc.identifier.issn0045-6535
dc.identifier.urihttps://doi.org/10.1016/j.chemosphere.2023.140137
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/20342
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectWaste recoveryen_UK
dc.subjectCo-pyrolysisen_UK
dc.subjectDistiller's grainsen_UK
dc.subjectPolypropeneen_UK
dc.subjectActivation energyen_UK
dc.subjectSynergistic mechanismen_UK
dc.titleEnhanced biofuel production by co-pyrolysis of distiller's grains and waste plastics: a quantitative appraisal of kinetic behaviors and product characteristicsen_UK
dc.typeArticleen_UK

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