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Título: | Catalytic valorisation of the effluents generated during the defibrillation process of cellulose from almond hulls: A holistic zero-waste biorefinery approach |
Autor: | Frecha, Esther CSIC; Remón, Javier CSIC ORCID; Sulaeman, Allyn P.; Matharu, Avtar S.; Suelves Laiglesia, Isabel CSIC ORCID ; Pinilla Ibarz, José Luis CSIC ORCID | Palabras clave: | Biorefinery Cellulose defibrillation Almond hulls Hydrolytic hydrogenation |
Fecha de publicación: | 26-may-2023 | Editor: | Elsevier | Citación: | Journal of Cleaner Production 414: 137582 (2023) | Resumen: | The acid-free hydrothermal microwave–assisted selective scissoring (Hymass concept) of cellulosic substrates is gaining keen interest in the field of materials science. Besides, implementing catalytic methodologies to upgrade side streams produced during this process could contribute to better, holistic utilisation of the starting feedstock. This work depicts a zero-waste biorefinery concept based on cellulose defibrillation from almond hulls using various hydrotreatment technologies (hydrogenation and hydrodeoxygenation) for downstream processing on a ruthenium catalyst. Therein, the hemicellulose separated from the biomass preconditioning step was converted into sugar alcohols and/or marketable polyols with a relatively high yield (47.4%) by hydrolytic hydrogenation (437 K, 3h, 5.0 MPa H2). Meanwhile, a family of bioactive compounds (3-hydroxypyridines) could be directly extracted from the hydrolysate stream derived from microwave digestion, along with an energy carrier that was chemically stabilised (503 K, 60 min, 4.0 MPa H2) to obtain fuel additives (diethyl succinic acid, DES) and/or fuel intermediates. | Descripción: | 5 figures, 7 tables.-- Supplementary information available. | Versión del editor: | https://dx.doi.org/10.1016/j.jclepro.2023.137582 | URI: | http://hdl.handle.net/10261/310697 | DOI: | 10.1016/j.jclepro.2023.137582 | ISSN: | 0959-6526 |
Aparece en las colecciones: | (ICB) Artículos |
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Holystic zero waste biorefinery_2023.pdf | Artículo principal | 3,26 MB | Adobe PDF | Visualizar/Abrir |
Holystic zero waste biorefinery_2023_sup_info.docx | Información suplementaria | 143,53 kB | Microsoft Word XML | Visualizar/Abrir |
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