Catalytic deoxygenation co-pyrolysis of bamboo wastes and microalgae with biochar catalyst

Wei Chen, Kaixu Li, Mingwei Xia, Haiping Yang, Yingquan Chen, Xu Chen, Qingfeng Che and Hanping Chen

Energy, 2018, vol. 157, issue C, 472-482

Abstract: Catalytic deoxygenation co-pyrolysis of bamboo wastes and microalgae with biochar catalyst was investigated in a fixed bed reactor to explore the deoxygenation effect and possible deoxygenation mechanism of biochar catalyst (resulted from bamboo wastes pyrolysis). Results showed that oil fraction yields from co-pyrolysis of bamboo wastes and microalgae decreased largely with biochar addition, but still maintained at 35–37 wt.%, while gas yields were enhanced greatly. As catalytic co-pyrolysis promoted the decomposition of long-chain fatty acids and O-species, and the formation of aromatics and phenols, therefore most oxygen in bio-oil vapor transformed to CO, CO2 and H2O, and only 7–9 wt.% oxygen retained in oil fraction. It indicated that biochar catalytic co-pyrolysis could not only efficiently remove oxygen (over 90 wt.%), but also keep oil fraction yields. Moreover, the active O-containing groups and specific surface area of biochar catalyst decreased largely after catalytic co-pyrolysis. The possible reaction pathways of catalytic co-pyrolysis with biochar catalyst were proposed.

Keywords: Catalytic co-pyrolysis; Deoxygenation; Biochar catalyst; Bamboo wastes; Microalgae; Bio-oil (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (15)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:157:y:2018:i:c:p:472-482

DOI: 10.1016/j.energy.2018.05.149

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