Lignin Precipitation and Fractionation from OrganoCat Pulping to Obtain Lignin with Different Sizes and Chemical Composition
Fractionation of lignocellulose into its three main components, lignin, hemicelluloses, and cellulose, is a common approach in modern biorefinery concepts. Whereas the valorization of hemicelluloses and cellulose sugars has been widely discussed in literature, lignin utilization is still challenging...
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MDPI AG
2020-07-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/25/15/3330 |
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| author | Dennis Weidener Arne Holtz Holger Klose Andreas Jupke Walter Leitner Philipp M. Grande |
| author_facet | Dennis Weidener Arne Holtz Holger Klose Andreas Jupke Walter Leitner Philipp M. Grande |
| author_sort | Dennis Weidener |
| collection | DOAJ |
| description | Fractionation of lignocellulose into its three main components, lignin, hemicelluloses, and cellulose, is a common approach in modern biorefinery concepts. Whereas the valorization of hemicelluloses and cellulose sugars has been widely discussed in literature, lignin utilization is still challenging. Due to its high heterogeneity and complexity, as well as impurities from pulping, it is a challenging feedstock. However, being the most abundant source of renewable aromatics, it remains a promising resource. This work describes a fractionation procedure that aims at stepwise precipitating beech wood (<i>Fagus sp.</i>) lignin obtained with OrganoCat technology from a 2-methyltetrahydrofuran solution, using <i>n</i>-hexane and <i>n</i>-pentane as antisolvents. By consecutive antisolvent precipitation and filtration, lignin is fractionated and then characterized to elucidate the structure of the different fractions. This way, more defined and purified lignin fractions can be obtained. Narrowing down the complexity of lignin and separately valorizing the fractions might further increase the economic viability of biorefineries. |
| first_indexed | 2024-03-10T18:17:02Z |
| format | Article |
| id | doaj.art-84647f335eec4cfa8fa6914c57264525 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T18:17:02Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-84647f335eec4cfa8fa6914c572645252023-11-20T07:36:55ZengMDPI AGMolecules1420-30492020-07-012515333010.3390/molecules25153330Lignin Precipitation and Fractionation from OrganoCat Pulping to Obtain Lignin with Different Sizes and Chemical CompositionDennis Weidener0Arne Holtz1Holger Klose2Andreas Jupke3Walter Leitner4Philipp M. Grande5Institute of Bio- and Geosciences, Plant Sciences, Forschungszentrum Jülich GmbH, 52425 Jülich, GermanyBioeconomy Science Center (BioSC), c/o Forschungszentrum Jülich, 52425 Jülich, GermanyInstitute of Bio- and Geosciences, Plant Sciences, Forschungszentrum Jülich GmbH, 52425 Jülich, GermanyFluid Process Engineering (AVT.FVT), RWTH Aachen University, Forckenbeckstraße 51, 52074 Aachen, GermanyInstitute of Technical and Macromolecular Chemistry (ITMC), RWTH Aachen University, Worringer Weg 1, 52074 Aachen, GermanyInstitute of Bio- and Geosciences, Plant Sciences, Forschungszentrum Jülich GmbH, 52425 Jülich, GermanyFractionation of lignocellulose into its three main components, lignin, hemicelluloses, and cellulose, is a common approach in modern biorefinery concepts. Whereas the valorization of hemicelluloses and cellulose sugars has been widely discussed in literature, lignin utilization is still challenging. Due to its high heterogeneity and complexity, as well as impurities from pulping, it is a challenging feedstock. However, being the most abundant source of renewable aromatics, it remains a promising resource. This work describes a fractionation procedure that aims at stepwise precipitating beech wood (<i>Fagus sp.</i>) lignin obtained with OrganoCat technology from a 2-methyltetrahydrofuran solution, using <i>n</i>-hexane and <i>n</i>-pentane as antisolvents. By consecutive antisolvent precipitation and filtration, lignin is fractionated and then characterized to elucidate the structure of the different fractions. This way, more defined and purified lignin fractions can be obtained. Narrowing down the complexity of lignin and separately valorizing the fractions might further increase the economic viability of biorefineries.https://www.mdpi.com/1420-3049/25/15/3330lignin fractionationOrganoCat pulpinglignin characterizationlignocellulosebiorefineryβ-<i>O</i>-4-linkage |
| spellingShingle | Dennis Weidener Arne Holtz Holger Klose Andreas Jupke Walter Leitner Philipp M. Grande Lignin Precipitation and Fractionation from OrganoCat Pulping to Obtain Lignin with Different Sizes and Chemical Composition Molecules lignin fractionation OrganoCat pulping lignin characterization lignocellulose biorefinery β-<i>O</i>-4-linkage |
| title | Lignin Precipitation and Fractionation from OrganoCat Pulping to Obtain Lignin with Different Sizes and Chemical Composition |
| title_full | Lignin Precipitation and Fractionation from OrganoCat Pulping to Obtain Lignin with Different Sizes and Chemical Composition |
| title_fullStr | Lignin Precipitation and Fractionation from OrganoCat Pulping to Obtain Lignin with Different Sizes and Chemical Composition |
| title_full_unstemmed | Lignin Precipitation and Fractionation from OrganoCat Pulping to Obtain Lignin with Different Sizes and Chemical Composition |
| title_short | Lignin Precipitation and Fractionation from OrganoCat Pulping to Obtain Lignin with Different Sizes and Chemical Composition |
| title_sort | lignin precipitation and fractionation from organocat pulping to obtain lignin with different sizes and chemical composition |
| topic | lignin fractionation OrganoCat pulping lignin characterization lignocellulose biorefinery β-<i>O</i>-4-linkage |
| url | https://www.mdpi.com/1420-3049/25/15/3330 |
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