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Evaluation of the potential performance of hyphenated pyrolysis-anaerobic digestion (Py-AD) process for carbon negative fuels from woody biomass

Cristian Torri, Giampiero Pambieri, Chiara Gualandi, Maurizio Piraccini, Alessandro G. Rombolà and Daniele Fabbri

Renewable Energy, 2020, vol. 148, issue C, 1190-1199

Abstract: A novel hyphenated Pyrolysis-Anaerobic Digestion prototype (Py-AD) was tested in order to evaluate the potential of hybrid thermochemical biological process to produce methane from woody biomass. An auger intermediate pyrolyzer was directly coupled to two biological reactors optimized for the digestion of residual condensable compounds and gas produced by pyrolysis of softwood. The Py-AD was monitored for 16 months and a detailed chemical analysis of the main fractions, gas (pyrobiogas), biochar, aqueous phase and pyrolytic lignin was performed under regime conditions. The results from Py-AD and those from experiments with bench-scale pyrolysis and fermentation reactors analysis provided information on the overall performance of the Py-AD and mass and energy balance based on chemical oxygen demand.

Keywords: Pyrolysis; Anaerobic digestion; Hybrid thermochemical biological; Biomethane; Biogas (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:148:y:2020:i:c:p:1190-1199

DOI: 10.1016/j.renene.2019.10.025

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