Purity and structural composition of lignin isolated from Miscanthus x giganteus by sub-critical water extraction with associated modifiers
Lignin is an industrial by-product produced from the pulping and paper industry, where the process generates lignin in the form of lignosulphonates. While there are many applications for lignin, there are all low value and attempts to add value to lignin are hindered by its complex physicochemical n...
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my.upm.eprints.873652022-02-03T08:18:13Z http://psasir.upm.edu.my/id/eprint/87365/ Purity and structural composition of lignin isolated from Miscanthus x giganteus by sub-critical water extraction with associated modifiers Hamzah, Muhammad Hazwan Bowra, Steve Cox, Philip Lignin is an industrial by-product produced from the pulping and paper industry, where the process generates lignin in the form of lignosulphonates. While there are many applications for lignin, there are all low value and attempts to add value to lignin are hindered by its complex physicochemical nature and the presence of sulphur. Adopting the biorefining concept, the study evaluates the impact of direct (DE) and sequential extraction (SE) of Miscanthus x giganteus using sub-critical water with associated modifiers; ethanol and carbon dioxide on the physical and chemical properties of the extracted lignin. Isolated lignins were characterised by a Fourier Transform Infrared Spectroscopy (FTIR). Although higher delignification was achieved by DE and SE about 81.5% and 58.0%, respectively, the lignin recovered from the SE process showed remarkably higher purity with 91.5%. Lignin recovery did not differ considerably for either processing method. FTIR revealed a qualitative reduction in the intensity of bonds corresponding to hydroxyl groups for the lignin derived from DE rather than SE processing routes. These indicated that the lignin derived from SE had potential for subsequent preparation in lignin value-added bio-based materials. SixScientia Resources 2020-04-15 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/87365/1/Purity%20and%20structural%20composition%20of%20lignin%20isolated.pdf Hamzah, Muhammad Hazwan and Bowra, Steve and Cox, Philip (2020) Purity and structural composition of lignin isolated from Miscanthus x giganteus by sub-critical water extraction with associated modifiers. Journal of Agricultural and Food Engineering, 1. pp. 1-12. ISSN 2716-6236 https://www.myjafe.com/volume-1-2020/#issue|1 10.37865/jafe.2020.0010 |
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Lignin is an industrial by-product produced from the pulping and paper industry, where the process generates lignin in the form of lignosulphonates. While there are many applications for lignin, there are all low value and attempts to add value to lignin are hindered by its complex physicochemical nature and the presence of sulphur. Adopting the biorefining concept, the study evaluates the impact of direct (DE) and sequential extraction (SE) of Miscanthus x giganteus using sub-critical water with associated modifiers; ethanol and carbon dioxide on the physical and chemical properties of the extracted lignin. Isolated lignins were characterised by a Fourier Transform Infrared Spectroscopy (FTIR). Although higher delignification was achieved by DE and SE about 81.5% and 58.0%, respectively, the lignin recovered from the SE process showed remarkably higher purity with 91.5%. Lignin recovery did not differ considerably for either processing method. FTIR revealed a qualitative reduction in the intensity of bonds corresponding to hydroxyl groups for the lignin derived from DE rather than SE processing routes. These indicated that the lignin derived from SE had potential for subsequent preparation in lignin value-added bio-based materials. |
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Hamzah, Muhammad Hazwan Bowra, Steve Cox, Philip |
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Hamzah, Muhammad Hazwan Bowra, Steve Cox, Philip Purity and structural composition of lignin isolated from Miscanthus x giganteus by sub-critical water extraction with associated modifiers |
author_facet |
Hamzah, Muhammad Hazwan Bowra, Steve Cox, Philip |
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Hamzah, Muhammad Hazwan |
title |
Purity and structural composition of lignin isolated from Miscanthus x giganteus by sub-critical water extraction with associated modifiers |
title_short |
Purity and structural composition of lignin isolated from Miscanthus x giganteus by sub-critical water extraction with associated modifiers |
title_full |
Purity and structural composition of lignin isolated from Miscanthus x giganteus by sub-critical water extraction with associated modifiers |
title_fullStr |
Purity and structural composition of lignin isolated from Miscanthus x giganteus by sub-critical water extraction with associated modifiers |
title_full_unstemmed |
Purity and structural composition of lignin isolated from Miscanthus x giganteus by sub-critical water extraction with associated modifiers |
title_sort |
purity and structural composition of lignin isolated from miscanthus x giganteus by sub-critical water extraction with associated modifiers |
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SixScientia Resources |
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2020 |
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http://psasir.upm.edu.my/id/eprint/87365/1/Purity%20and%20structural%20composition%20of%20lignin%20isolated.pdf http://psasir.upm.edu.my/id/eprint/87365/ https://www.myjafe.com/volume-1-2020/#issue|1 |
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