VALORISATION OF HYDROLYSIS LIGNIN REST FROM BIOETHANOL PILOT PLANT: PROCESS DEVELOPMENT AND UPSCALING: PROCESS DEVELOPMENT AND UPSCALING
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2020-11-15
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Abstract
The aim of this work has been to find a scalable process to purify lignin and separate the cellulose-rich fraction from a poplar wood hydrolysis rest produced at a bioethanol pilot-plant. At initial laboratory optimization, a mild extraction of lignin was performed with 1 M NaOH at 90 °C to dissolve the lignin, that was further precipitated with sulfuric acid and this formed an easily filtrable powder. The main sub-product was a solid residue enriched in cellulose, which was successfully saccharified and tested for its fermentability. Further upscaling of the method was done at Bio Based Europe Pilot Plant (BBEPP) in Belgium. In a first run 14.2 kg of purified poplar lignin was obtained and in a second run 128.6 kg was obtained. The wet fiber residue was processed by washing and enzymatic hydrolysis to obtain, 26.7 kg of concentrated sugar solution with 509.4 g/L of glucose.
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Publisher Copyright: © 2020 The Authors
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Biorefinery , Hydrolysis lignin , 2,3-butanediol , Purification , Upscaling , Biorefinery , Hydrolysis lignin , 2,3-butanediol , Purification , Upscaling , Agronomy and Crop Science , SDG 7 - Affordable and Clean Energy , Project ID , info:eu-repo/grantAgreement/EC/H2020/723670/EU/Systemic approach to Reduce Energy demand and CO2 emissions of processes that transform agroforestry waste into High Added value Products/REHAP , info:eu-repo/grantAgreement/EC/H2020/723670/EU/Systemic approach to Reduce Energy demand and CO2 emissions of processes that transform agroforestry waste into High Added value Products/REHAP , Funding Info , European Union´s H2020, GA no. 723670, REHAP , European Union´s H2020, GA no. 723670, REHAP
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Svensson , I , Roncal , T , De Winter , K , Van Canneyt , A , Tamminen , T , Mikkelson , A & Barrio , A 2020 , ' VALORISATION OF HYDROLYSIS LIGNIN REST FROM BIOETHANOL PILOT PLANT: PROCESS DEVELOPMENT AND UPSCALING : PROCESS DEVELOPMENT AND UPSCALING ' , Industrial Crops and Products , vol. 156 , 112869 , pp. 112869 . https://doi.org/10.1016/j.indcrop.2020.112869