Catalytic co-pyrolysis of wet-torrefied bamboo sawdust and plastic over the zeolite H-ZSM-5: Synergistic effects and kinetics

Mahboob Alam, Draksharapu Rammohan and Nageswara Rao Peela

Renewable Energy, 2021, vol. 178, issue C, 608-619

Abstract: In the present study, the hemicellulose from bamboo sawdust (BSD) was selectively removed in the form of xylose and acetic acid using the wet-torrefaction technique in presence of formic acid and NaCl as catalysts. The best torrefaction activity, with xylose yield 85% and complete removal of hemicellulose, was obtained with formic acid:BSD 1:1 and NaCl:BSD 3:1 w/w. The torrefied BSD (TBSD) was catalytically co-pyrolyzed with linear low-density polyethylene (LLDPE) over HZSM-5. The apparent activation energies (Em) of catalytic pyrolysis (CP) of TBSD, and LLDPE were 187 and 147 kJ mol−1, respectively, from Kissinger–Akahira–Sunose (KAS) model. Those of catalytic co-pyrolysis (CCP) of blends TBP3:1, TBP1:1 and TBP1:3 were 163, 135 and 133 kJ mol−1, respectively. The CCP of TBP1:3 and TBP1:1 showed synergism between TBSD and LLDPE in terms of Em and TBP1:3 (TBSD: LLDPE 1:3 w/w) showed the highest synergism with the least Em. The CCP mechanism of samples with a higher fraction of TBSD was more complex, as depicted from Criado's master plot.

Keywords: Bamboo sawdust; Wet torrefaction; Linear low-density polyethylene (LLDPE); Catalytic co-pyrolysis; Synergistic effects (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:178:y:2021:i:c:p:608-619

DOI: 10.1016/j.renene.2021.06.109

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