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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of phenols and furans released during thermal pretreatment of olive mill solid waste on its anaerobic digestion

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Author(s):
Caroca, E. [1, 2] ; Serrano, A. [3, 4] ; Borja, R. [3] ; Jimenez, A. [2] ; Carvajal, A. [1] ; Braga, A. F. M. [5] ; Rodriguez-Gutierrez, G. [3] ; Fermoso, F. G. [3]
Total Authors: 8
Affiliation:
[1] Univ Tecn Federico Santa Maria, Ave Vicuna Mackenna 3939, Santiago - Chile
[2] Univ Pablo de Olavide, Carretera Utrera 1, Seville 41013 - Spain
[3] Inst Grasa CSIC, Seville - Spain
[4] Univ Queensland, Sch Civil Engn, Campus St Lucia, Ed 49, Brisbane, Qld 4067 - Australia
[5] Univ Sao Paulo, Sao Carlos Sch Engn EESC, Ctr Res Dev & Innovat Environm Engn, Engn Ambiental Bloco 4-F, Av Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil
Total Affiliations: 5
Document type: Journal article
Source: WASTE MANAGEMENT; v. 120, p. 202-208, FEB 1 2021.
Web of Science Citations: 2
Abstract

The application of thermal pretreatments to facilitate its anaerobic digestion has associated phenols and furans production, which are commonly identified as inhibitory compounds. Phenols and furans extraction can be done from a liquid phase produced after the thermal pretreatment. In the present study this dephenolized liquid phase (DLP) showed an increase of 42% in methane yield compared to the raw liquid phase (LP) demonstrating the inhibitor character of such compounds. The main extracted phenols and furans were: 3,4-Dihydroxyphenylglycol (DHPG), Hydroxytyrosol (HT), Tyrosol (Ty), Vanillic acid (AcV), Hydroxymethylfurfural (HMF), Vanillin (V) and Furfural (F).This study also aimed to evaluate the individual effect on methane production of these specific phenols and furans the within the mixture of several ones from LP. The evaluation of the individual compounds over the methanogenesis of a dephenolized liquid phase showed that only V was inhibitory on both methane yield and methane production rate. HMF had a significantly negative effect on methane yield, but improved the methane production rate instead. Ty, F, DHPG and HT favoured the methane yield and production rate. Additionally, it was observed that negative effect of some individual phenols and furans was counteracted by the positive effect of other compounds. (C) 2020 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 19/21370-7 - Strategy for valorization of phenolic compounds from agro-industrial waste
Grantee:Adriana Ferreira Maluf Braga
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor