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Optimization of Charcoal Production Process from Woody Biomass Waste: Effect of Ni-Containing Catalysts on Pyrolysis Vapors

Chemical and Environmental Engineering Department, School of Engineering of Bilbao, University of the Basque Country (UPV/EHU), Plaza Ingeniero Torres Quevedo 1, 48013 Bilbao, Spain
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Catalysts 2018, 8(5), 191; https://doi.org/10.3390/catal8050191
Received: 12 April 2018 / Revised: 27 April 2018 / Accepted: 28 April 2018 / Published: 4 May 2018
(This article belongs to the Special Issue Catalytic Pyrolysis)
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Abstract

Woody biomass waste (Pinus radiata) coming from forestry activities has been pyrolyzed with the aim of obtaining charcoal and, at the same time, a hydrogen-rich gas fraction. The pyrolysis has been carried out in a laboratory scale continuous screw reactor, where carbonization takes place, connected to a vapor treatment reactor, at which the carbonization vapors are thermo-catalytically treated. Different peak temperatures have been studied in the carbonization process (500–900 °C), while the presence of different Ni-containing catalysts in the vapor treatment has been analyzed. Low temperature pyrolysis produces high liquid and solid yields, however, increasing the temperature progressively up to 900 °C drastically increases gas yield. The amount of nickel affects the vapors treatment phase, enhancing even further the production of interesting products such as hydrogen and reducing the generated liquids to very low yields. The gases obtained at very high temperatures (700–900 °C) in the presence of Ni-containing catalysts are rich in H2 and CO, which makes them valuable for energy production, as hydrogen source, producer gas or reducing agent. View Full-Text
Keywords: biomass waste; slow pyrolysis; charcoal; screw reactor; Ni-catalyst; hydrogen biomass waste; slow pyrolysis; charcoal; screw reactor; Ni-catalyst; hydrogen
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Solar, J.; Caballero, B.M.; De Marco, I.; López-Urionabarrenechea, A.; Gastelu, N. Optimization of Charcoal Production Process from Woody Biomass Waste: Effect of Ni-Containing Catalysts on Pyrolysis Vapors. Catalysts 2018, 8, 191.

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