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Synergistic effects of lignin and cellulose during pyrolysis of agricultural waste.

Volpe, Roberto; Zabaniotou, Anastasia A.; Skoulou, Vasiliki

Authors

Roberto Volpe

Anastasia A. Zabaniotou

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Dr Vicky Skoulou V.Skoulou@hull.ac.uk
Director of Research in Chemical Engineering ;Lecturer in Chemical Engineering-Bioenergy ; PI of the B3: Biomass waste- Bioenergy- Biochars Challenge Group



Abstract

© 2018 American Chemical Society. Varying lignin and cellulose contents in agro-waste cause feed-stock to respond differently during their thermochemical conversion. The effect of pyrolysis temperature (400, 500, 600oC) and feedstock composition on product yields and gas composition of Olive-Kernel (OK) and Corn-Cobs (CC) was investigated in a lab-scale, fix bed reactor under a 20mL/min of nitrogen flow at atmospheric pressure. Results were compared to those obtained in the same pyrolysis set up from model synthetic mixtures of cellulose and lignin, simulating the composition of real feedstocks. Experimental results showed how lignin influences the thermochemical process and how non-negligible synergistic effects among lignin and cellulose are affecting the process outcomes. Lignin affects the increase in char yields from synthetic mixtures more than it does in real feedstock. Similarly higher yield of CO2 in produced gas is reported from pyrolysis of synthetic mixtures compared to that obtained from real feedstock containing the same amount of lignin. Thus the pyrolysis behaviour of raw feedstock cannot be satisfactorily predicted by the behaviour of their main components in an 'additive' rule.

Journal Article Type Article
Publication Date Aug 16, 2018
Print ISSN 0887-0624
Electronic ISSN 1520-5029
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 32
Issue 8
Pages 8420-8430
Institution Citation Volpe, R., Zabaniotou, A. A., & Skoulou, V. (2018). Synergistic effects of lignin and cellulose during pyrolysis of agricultural waste. Energy and Fuels, 32(8), 8420-8430. https://doi.org/10.1021/acs.energyfuels.8b00767
DOI https://doi.org/10.1021/acs.energyfuels.8b00767
Keywords Lignin; cellulose; agricultural waste; pyrolysis; product yields; gas composition; biomass; bioenergy; biomaterials
Publisher URL https://pubs.acs.org/doi/10.1021/acs.energyfuels.8b00767
Copyright Statement ©2018 University of Hull

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