Process options for the recovery of a pentosan-enriched fraction from wheat-based bioethanol thin stillage
Abstract Aim Stillage, the main residue from cereal-based bioethanol production, offers a great potential for the recovery of pentosan-type carbohydrates. Therefore, potential process options for the recovery of pentosans from bioethanol thin stillage are investigated and their basic feasibility is...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-09-01
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| Series: | Bioresources and Bioprocessing |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40643-023-00679-8 |
| _version_ | 1797578466100510720 |
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| author | Andreas Zimmermann Marvin Scherzinger Martin Kaltschmitt |
| author_facet | Andreas Zimmermann Marvin Scherzinger Martin Kaltschmitt |
| author_sort | Andreas Zimmermann |
| collection | DOAJ |
| description | Abstract Aim Stillage, the main residue from cereal-based bioethanol production, offers a great potential for the recovery of pentosan-type carbohydrates. Therefore, potential process options for the recovery of pentosans from bioethanol thin stillage are investigated and their basic feasibility is demonstrated on a laboratory scale. Findings The main result of this work is the development of a three-stage process for pentosan recovery, including solid–liquid separation, pentosan solubilisation and purification. The pentosan content of the thin stillage used here was determined to be about 14% related to dry matter (DM). By means of solid–liquid separation, these pentosans accumulate in the liquid phase (up to 80%), while the remainder (about 20%) is found in the solid phase. Solubilisation of these insoluble pentosans was achieved by using either a hydrothermal, an alkaline or an enzymatic treatment. Here, the results indicate a maximum solubilisation yield of 90% with a hydrothermal treatment using liquid hot water at 180 °C. Ultrafiltration and precipitation are investigated for purification. The most promising process option in this study is solid–liquid separation followed by ultrafiltration. In this case, the total pentosan yield is assessed to be about 48% (based on thin stillage) with a final pentosan concentration of about 30%DM. Graphical Abstract |
| first_indexed | 2024-03-10T22:23:18Z |
| format | Article |
| id | doaj.art-776c307b05444b55aeaaddff17d23b51 |
| institution | Directory Open Access Journal |
| issn | 2197-4365 |
| language | English |
| last_indexed | 2024-03-10T22:23:18Z |
| publishDate | 2023-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Bioresources and Bioprocessing |
| spelling | doaj.art-776c307b05444b55aeaaddff17d23b512023-11-19T12:12:39ZengSpringerOpenBioresources and Bioprocessing2197-43652023-09-0110111310.1186/s40643-023-00679-8Process options for the recovery of a pentosan-enriched fraction from wheat-based bioethanol thin stillageAndreas Zimmermann0Marvin Scherzinger1Martin Kaltschmitt2Institute of Environmental Technology and Energy Economics, Hamburg University of TechnologyInstitute of Environmental Technology and Energy Economics, Hamburg University of TechnologyInstitute of Environmental Technology and Energy Economics, Hamburg University of TechnologyAbstract Aim Stillage, the main residue from cereal-based bioethanol production, offers a great potential for the recovery of pentosan-type carbohydrates. Therefore, potential process options for the recovery of pentosans from bioethanol thin stillage are investigated and their basic feasibility is demonstrated on a laboratory scale. Findings The main result of this work is the development of a three-stage process for pentosan recovery, including solid–liquid separation, pentosan solubilisation and purification. The pentosan content of the thin stillage used here was determined to be about 14% related to dry matter (DM). By means of solid–liquid separation, these pentosans accumulate in the liquid phase (up to 80%), while the remainder (about 20%) is found in the solid phase. Solubilisation of these insoluble pentosans was achieved by using either a hydrothermal, an alkaline or an enzymatic treatment. Here, the results indicate a maximum solubilisation yield of 90% with a hydrothermal treatment using liquid hot water at 180 °C. Ultrafiltration and precipitation are investigated for purification. The most promising process option in this study is solid–liquid separation followed by ultrafiltration. In this case, the total pentosan yield is assessed to be about 48% (based on thin stillage) with a final pentosan concentration of about 30%DM. Graphical Abstracthttps://doi.org/10.1186/s40643-023-00679-8StillagePentosan determinationPentosan recoveryPentosan solubilisationDistillers’ grainsEthanol |
| spellingShingle | Andreas Zimmermann Marvin Scherzinger Martin Kaltschmitt Process options for the recovery of a pentosan-enriched fraction from wheat-based bioethanol thin stillage Bioresources and Bioprocessing Stillage Pentosan determination Pentosan recovery Pentosan solubilisation Distillers’ grains Ethanol |
| title | Process options for the recovery of a pentosan-enriched fraction from wheat-based bioethanol thin stillage |
| title_full | Process options for the recovery of a pentosan-enriched fraction from wheat-based bioethanol thin stillage |
| title_fullStr | Process options for the recovery of a pentosan-enriched fraction from wheat-based bioethanol thin stillage |
| title_full_unstemmed | Process options for the recovery of a pentosan-enriched fraction from wheat-based bioethanol thin stillage |
| title_short | Process options for the recovery of a pentosan-enriched fraction from wheat-based bioethanol thin stillage |
| title_sort | process options for the recovery of a pentosan enriched fraction from wheat based bioethanol thin stillage |
| topic | Stillage Pentosan determination Pentosan recovery Pentosan solubilisation Distillers’ grains Ethanol |
| url | https://doi.org/10.1186/s40643-023-00679-8 |
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