Production and separation of value-added compounds from pine wood using pyrolysis and biorefinery techniques
Mora Sanjuan, Mireia (Universitat Autònoma de Barcelona. Departament de Química)
Fàbregas, Esteve (Universitat Autònoma de Barcelona. Departament de Química)
Céspedes Mulero, Francisco (Universitat Autònoma de Barcelona. Departament de Química)
Bartrolí i Molins, Jordi (Universitat Autònoma de Barcelona. Departament de Química)
Puy Marimón, Neus (Universitat Autònoma de Barcelona. Departament de Química)

Date:	2022
Abstract:	Value-added compounds were obtained from pine wood bio-oil, converting it into a renewable source for several chemicals: acids (acetic acid), sugars (levoglucosan), furan derivatives (furfural) and phenolics (catechol, phenol, 4-propylguaiacol, vanillin). To achieve this, firstly a comparison of a direct pyrolysis at 500 °C versus a two-staged pyrolysis (300 °C and 500 °C) was made. It was determined that a two-staged pyrolysis ensue in the obtainment of less complex liquid fractions since it concentrates families of compounds in different phases of bio-oil, facilitating their subsequent separation. Secondly, two methodologies (A and B) were designed to establish a procedure for separating the various chemical groups present in bio-oil. Methodology A consisted of a first vacuum distillation followed by an extraction process that combined an alkaline extraction and a simple extraction with ethyl acetate. Methodology B consisted of a first extraction with trioctylamine and ethyl acetate followed by a vacuum distillation and an extraction with hot water. The results showed that methodology A was better for the separation of chemical compounds from bio-oil, obtaining one fraction with the carboxylic acid content and furan derivatives, a second fraction containing the phenolic compounds and a third fraction enriched with the sugar content.
Grants:	Agencia Estatal de Investigación PID2020-117216RB-I00
Note:	Altres ajuts: acords transformatius de la UAB
Note:	Altres ajuts: LIFE Programme of the European Union for the project LIFE BIOREFFORMED (LIFE 19 ENV/ES/000544)
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Alkaline extraction ; Bio-oil ; Biorefinery ; Two-Staged Pyrolysis ; Vacuum distillation ; Value-added compounds ; SDG 7 - Affordable and Clean Energy
Published in:	Fuel Processing Technology, Vol. 238 (December 2022) , art. 107509, ISSN 0378-3820

DOI: 10.1016/j.fuproc.2022.107509

10 p, 1.6 MB

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