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Publisher DOI: 10.3390/pr9091585
Title: Counter-Current Suspension Extraction Process of Lignocellulose in Biorefineries to Reach Low Water Consumption, High Extraction Yields, and Extract Concentrations
Language: English
Authors: Conrad, Marc 
Smirnova, Irina  
Issue Date: 4-Sep-2021
Publisher: Multidisciplinary Digital Publishing Institute
Source: Processes 9 (9): 1585 (2021)
Abstract (english): 
The processing of large quantities of water in biorefining processes can lead to immense costs for heating, evaporation, and wastewater disposal. These costs may prohibit the exploitation of alternative products, e.g., xylooligosaccharides from straw, which are regarded as too costly. A new counter-current extractions method is proposed that aims at low solvent (water) consumption, as well as high yields and extract concentrations. This process was evaluated with suspension extraction experiments with steam pretreated wheat straw and the process window analysis based on a mass balance for a washing and a leaching scenario. The latter was conducted with two other suspension extraction processes as a comparison. The equilibration time was found to be well below 10 min. While the suspension extraction with and without recycling need to be designed to achieve a high yield or a high concentration and low solvent consumption, the proposed extraction method can reach all three simultaneously. Thus, this new process is evaluated as a potential method to spare water and downstream costs and allow new processing pathways in second-generation biorefineries.
DOI: 10.15480/882.3766
ISSN: 2227-9717
Journal: Processes 
Institute: Thermische Verfahrenstechnik V-8 
Document Type: Article
Project: Publikationsfonds 2021 
License: CC BY 4.0 (Attribution) CC BY 4.0 (Attribution)
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