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Anaerobic co-digestion of microalgal biomass and wheat straw with and without thermo-alkaline pretreatment

Bioresource technology, 2017-08, Vol.237, p.89-98 [Peer Reviewed Journal]

Copyright © 2017 Elsevier Ltd. All rights reserved. ;Attribution-NonCommercial-NoDerivs 3.0 Spain info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/3.0/es/ ;Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 0960-8524 ;EISSN: 1873-2976 ;DOI: 10.1016/j.biortech.2017.03.151 ;PMID: 28412147

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Title:
Anaerobic co-digestion of microalgal biomass and wheat straw with and without thermo-alkaline pretreatment
Author: Solé-Bundó, Maria ; Eskicioglu, Cigdem ; Garfí, Marianna ; Carrère, Hélène ; Ferrer, Ivet
Subjects: Anaerobiosis ; Biogas ; Biomass ; Biotechnology ; C/N ratio ; Desenvolupament humà i sostenible ; Enginyeria ambiental ; Life Sciences ; Lignocellulosic biomass ; Methane ; Microalgae ; Microalgues ; Thermo-chemical pretreatment ; Tractament de l'aigua ; Triticum ; Àrees temàtiques de la UPC
Is Part Of: Bioresource technology, 2017-08, Vol.237, p.89-98
Description: This study aimed at analyzing the anaerobic co-digestion of microalgal biomass grown in wastewater and wheat straw. To this end, Biochemical Methane Potential (BMP) tests were carried out testing different substrate proportions (20-80, 50-50 and 80-20%, on a volatile solid basis). In order to improve their biodegradability, the co-digestion of both substrates was also evaluated after applying a thermo-alkaline pretreatment (10% CaO at 75°C for 24h). The highest synergies in degradation rates were observed by adding at least 50% of wheat straw. Therefore, the co-digestion of 50% microalgae - 50% wheat straw was investigated in mesophilic lab-scale reactors. The results showed that the methane yield was increased by 77% with the co-digestion as compared to microalgae mono-digestion, while the pretreatment only increased the methane yield by 15% compared to the untreated mixture. Thus, the anaerobic co-digestion of microalgae and wheat straw was successful even without applying a thermo-alkaline pretreatment.
Publisher: England: Elsevier
Language: English
Identifier: ISSN: 0960-8524
EISSN: 1873-2976
DOI: 10.1016/j.biortech.2017.03.151
PMID: 28412147
Source: Hyper Article en Ligne (HAL) (Open Access)

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Anaerobic co-digestion of microalgal biomass and wheat straw with and without thermo-alkaline pretreatment

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