Extraction and Purification of Phenolic Compounds from Lignocellulosic Biomass Assisted by Ionic Liquid, Polymeric Resins, and Supercritical CO2
A sustainable process of valorization of lignocellulosic biomass exploring the extraction and separation of high value phenolic compounds was developed. A scale-up pretreatment and fractionation process of biomass assisted by 1-ethyl-3-methylimidazolium acetate ([emim][OAc]) ionic liquid (IL) was...
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Published in | ACS sustainable chemistry & engineering Vol. 4; no. 6; pp. 3357 - 3367 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
American Chemical Society
06.06.2016
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Abstract | A sustainable process of valorization of lignocellulosic biomass exploring the extraction and separation of high value phenolic compounds was developed. A scale-up pretreatment and fractionation process of biomass assisted by 1-ethyl-3-methylimidazolium acetate ([emim][OAc]) ionic liquid (IL) was carried out at first. Thereafter, recovered IL formed a sample rich in phenolic compounds, which separation and purification was the main objective of the present work. The phenolic extraction from the recycled IL was studied employing adsorption methodology with specific polymeric resins. Amberlite XAD-7 and Silica C18 resins showed the highest extraction efficiency of phenolic compounds, while PVPP presented high selectivity toward tricin and a specific lignin fragment. Among the examined resins, Amberlite XAD-7 demonstrated the highest ratio of phenolic compounds extraction in comparison to IL. A residual quantity of IL was observed to remain in the extracted samples and this was overcome by applying supercritical CO2 extraction approach. Proposed methodology allowed to produce high purity main biomass fractions with IL-free extract of phenolic compounds in a green and more sustainable fashion with IL and CO2 processes employed. |
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AbstractList | A sustainable process of valorization of lignocellulosic biomass exploring the extraction and separation of high value phenolic compounds was developed. A scale-up pretreatment and fractionation process of biomass assisted by 1-ethyl-3-methylimidazolium acetate ([emim][OAc]) ionic liquid (IL) was carried out at first. Thereafter, recovered IL formed a sample rich in phenolic compounds, which separation and purification was the main objective of the present work. The phenolic extraction from the recycled IL was studied employing adsorption methodology with specific polymeric resins. Amberlite XAD-7 and Silica C18 resins showed the highest extraction efficiency of phenolic compounds, while PVPP presented high selectivity toward tricin and a specific lignin fragment. Among the examined resins, Amberlite XAD-7 demonstrated the highest ratio of phenolic compounds extraction in comparison to IL. A residual quantity of IL was observed to remain in the extracted samples and this was overcome by applying supercritical CO2 extraction approach. Proposed methodology allowed to produce high purity main biomass fractions with IL-free extract of phenolic compounds in a green and more sustainable fashion with IL and CO2 processes employed. |
Author | Falé, Pedro Roseiro, Luísa B. da Costa Lopes, André M. Brenner, Miriam Bogel-Łukasik, Rafał |
AuthorAffiliation | Laboratório Nacional de Energia e Geologia Universidade de Lisboa Centro de Química e Bioquímica, Faculdade de Ciências Universidade Nova de Lisboa Unidade de Bioenergia LAQV/REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia |
AuthorAffiliation_xml | – name: Centro de Química e Bioquímica, Faculdade de Ciências – name: Universidade Nova de Lisboa – name: Laboratório Nacional de Energia e Geologia – name: Universidade de Lisboa – name: Unidade de Bioenergia – name: LAQV/REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia |
Author_xml | – sequence: 1 givenname: André M. surname: da Costa Lopes fullname: da Costa Lopes, André M. – sequence: 2 givenname: Miriam surname: Brenner fullname: Brenner, Miriam – sequence: 3 givenname: Pedro surname: Falé fullname: Falé, Pedro – sequence: 4 givenname: Luísa B. surname: Roseiro fullname: Roseiro, Luísa B. – sequence: 5 givenname: Rafał surname: Bogel-Łukasik fullname: Bogel-Łukasik, Rafał email: rafal.lukasik@lneg.pt |
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Keywords | Ionic liquids Extraction Adsorption Phenolics Lignocellulosic biomass Supercritical CO2 |
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Title | Extraction and Purification of Phenolic Compounds from Lignocellulosic Biomass Assisted by Ionic Liquid, Polymeric Resins, and Supercritical CO2 |
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