Article: Biorefining for olive wastes management and efficient bioenergy production
Energy conversion and management. 2021 Sept. 15, v. 244
2021
Abstract: The potential of olive wastes for development of a multi-product biorefinery was investigated. Different parts of olive wastes, i.e., stone, pomace, leaves, and wood, were subjected to liquid hot water, organosolv, and acid-catalyzed organosolv (ACO) ... ...
Abstract | The potential of olive wastes for development of a multi-product biorefinery was investigated. Different parts of olive wastes, i.e., stone, pomace, leaves, and wood, were subjected to liquid hot water, organosolv, and acid-catalyzed organosolv (ACO) pretreatments prior to bioconversion through three different scenarios. The first scenario, i.e., anaerobic digestion of substrates for biogas production, yielded 219.3 m³ biomethane per hectare of olive trees, equated to 247.4 L gasoline. The highest methane production of 103.3 m³ was attributed to liquid hot water pretreated wood and ACO increased methane yield for leaf and stone samples by 200 and 33%, respectively. The second scenario, i.e., fermentation of wastes for bioethanol production, resulted in 295.9 L bioethanol per hectare of olive trees, equivalent to 196.1 L gasoline. Organosolv pretreated wood with 82.9% production yield and 152.5 L bioethanol constitutes this plan's dominant part. The ACO pretreatment improved fermentation yield for pomace and stone samples by 49% and 53%, respectively. The third scenario, included the utilization of olive wastes in bioethanol production, anaerobic digestion of fermentation residues, and lignin separation, resulted in 295.9 L bioethanol, 137.2 m³ biomethane, and 347.1 kg lignin, equated with 521.6 L gasoline. Furthermore, the remaining oil content in pomace and stone samples was 17% and 20%, respectively, which could be used for biodiesel production. Overall, olive wastes processing through an integrated biorefinery plant with multiple products significantly improved the energy recovery of the whole plant. |
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Keywords | administrative management ; anaerobic digestion ; biodiesel ; bioethanol ; biogas ; biorefining ; biotransformation ; energy conversion ; energy recovery ; ethanol production ; fermentation ; gas production (biological) ; gasoline ; leaves ; lignin ; lipid content ; liquids ; methane production ; olives ; pomace ; wood |
Language | English |
Dates of publication | 2021-0915 |
Publishing place | Elsevier Ltd |
Document type | Article |
ZDB-ID | 2000891-0 |
ISSN | 0196-8904 |
ISSN | 0196-8904 |
DOI | 10.1016/j.enconman.2021.114467 |
Database | NAL-Catalogue (AGRICOLA) |
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