Energy-Related Assessment of a Hemicellulose-First Concept—Debottlenecking of a Hydrothermal Wheat Straw Biorefinery
A hemicellulose-first approach can offer advantages for biorefineries utilizing wheat straw as it combines lignocellulose fractionation and potentially higher added value from pentose-based hemicellulose. Therefore, a tailored hydrothermal concept for the production of xylooligosaccharides and xylan...
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| Format: | Article |
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MDPI AG
2025-01-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/30/3/602 |
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| author | Stanislav Parsin Marvin Scherzinger Martin Kaltschmitt |
| author_facet | Stanislav Parsin Marvin Scherzinger Martin Kaltschmitt |
| author_sort | Stanislav Parsin |
| collection | DOAJ |
| description | A hemicellulose-first approach can offer advantages for biorefineries utilizing wheat straw as it combines lignocellulose fractionation and potentially higher added value from pentose-based hemicellulose. Therefore, a tailored hydrothermal concept for the production of xylooligosaccharides and xylan was investigated. The focus was on assessing the energy requirements and potential improvements based on experimental results. The wheat straw pretreatment and the downstream processing of hemicellulose hydrolysate were modeled at a scale of 30,000 tons of wheat straw dry mass per year. The results confirmed that the hydrothermal concept can be implemented in an energy-efficient manner without the need for additional auxiliaries, due to targeted process design, heat integration and a high solids loading during hydrolysis. The resulting specific energy requirements for pretreatment and hydrolysate processing are 0.28 kWh/kg and 0.13 kWh/kg of wheat straw dry mass, respectively. Compared to thermal hydrolysate processing alone, the combination of a multi-effect evaporator and pressure-driven ultrafiltration can reduce the heating and cooling energy by 29% and 44%, respectively. However, the ultrafiltration requirements (e.g., electrical energy, membrane area and costs) depend heavily on the properties of the hydrolysate and its interactions with the membrane. This work can contribute to the commercially viable ramp-up of wheat straw multi-product biorefineries. |
| format | Article |
| id | doaj-art-5d450aa9705a4fcda3e4c348f8a40835 |
| institution | OA Journals |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Molecules |
| spelling | doaj-art-5d450aa9705a4fcda3e4c348f8a408352025-08-20T02:12:31ZengMDPI AGMolecules1420-30492025-01-0130360210.3390/molecules30030602Energy-Related Assessment of a Hemicellulose-First Concept—Debottlenecking of a Hydrothermal Wheat Straw BiorefineryStanislav Parsin0Marvin Scherzinger1Martin Kaltschmitt2Institute of Environmental Technology and Energy Economics (IUE), Hamburg University of Technology (TUHH), Eissendorfer Strasse 40, 21073 Hamburg, GermanyInstitute of Environmental Technology and Energy Economics (IUE), Hamburg University of Technology (TUHH), Eissendorfer Strasse 40, 21073 Hamburg, GermanyInstitute of Environmental Technology and Energy Economics (IUE), Hamburg University of Technology (TUHH), Eissendorfer Strasse 40, 21073 Hamburg, GermanyA hemicellulose-first approach can offer advantages for biorefineries utilizing wheat straw as it combines lignocellulose fractionation and potentially higher added value from pentose-based hemicellulose. Therefore, a tailored hydrothermal concept for the production of xylooligosaccharides and xylan was investigated. The focus was on assessing the energy requirements and potential improvements based on experimental results. The wheat straw pretreatment and the downstream processing of hemicellulose hydrolysate were modeled at a scale of 30,000 tons of wheat straw dry mass per year. The results confirmed that the hydrothermal concept can be implemented in an energy-efficient manner without the need for additional auxiliaries, due to targeted process design, heat integration and a high solids loading during hydrolysis. The resulting specific energy requirements for pretreatment and hydrolysate processing are 0.28 kWh/kg and 0.13 kWh/kg of wheat straw dry mass, respectively. Compared to thermal hydrolysate processing alone, the combination of a multi-effect evaporator and pressure-driven ultrafiltration can reduce the heating and cooling energy by 29% and 44%, respectively. However, the ultrafiltration requirements (e.g., electrical energy, membrane area and costs) depend heavily on the properties of the hydrolysate and its interactions with the membrane. This work can contribute to the commercially viable ramp-up of wheat straw multi-product biorefineries.https://www.mdpi.com/1420-3049/30/3/602autohydrolysissteamingxylooligosaccharides (XOS)xylanfractionationultrafiltration |
| spellingShingle | Stanislav Parsin Marvin Scherzinger Martin Kaltschmitt Energy-Related Assessment of a Hemicellulose-First Concept—Debottlenecking of a Hydrothermal Wheat Straw Biorefinery Molecules autohydrolysis steaming xylooligosaccharides (XOS) xylan fractionation ultrafiltration |
| title | Energy-Related Assessment of a Hemicellulose-First Concept—Debottlenecking of a Hydrothermal Wheat Straw Biorefinery |
| title_full | Energy-Related Assessment of a Hemicellulose-First Concept—Debottlenecking of a Hydrothermal Wheat Straw Biorefinery |
| title_fullStr | Energy-Related Assessment of a Hemicellulose-First Concept—Debottlenecking of a Hydrothermal Wheat Straw Biorefinery |
| title_full_unstemmed | Energy-Related Assessment of a Hemicellulose-First Concept—Debottlenecking of a Hydrothermal Wheat Straw Biorefinery |
| title_short | Energy-Related Assessment of a Hemicellulose-First Concept—Debottlenecking of a Hydrothermal Wheat Straw Biorefinery |
| title_sort | energy related assessment of a hemicellulose first concept debottlenecking of a hydrothermal wheat straw biorefinery |
| topic | autohydrolysis steaming xylooligosaccharides (XOS) xylan fractionation ultrafiltration |
| url | https://www.mdpi.com/1420-3049/30/3/602 |
| work_keys_str_mv | AT stanislavparsin energyrelatedassessmentofahemicellulosefirstconceptdebottleneckingofahydrothermalwheatstrawbiorefinery AT marvinscherzinger energyrelatedassessmentofahemicellulosefirstconceptdebottleneckingofahydrothermalwheatstrawbiorefinery AT martinkaltschmitt energyrelatedassessmentofahemicellulosefirstconceptdebottleneckingofahydrothermalwheatstrawbiorefinery |