Survey of renewable chemicals produced from lignocellulosic biomass during ionic liquid pretreatment
<p>Abstract</p> <p>Background</p> <p>Lignin is often overlooked in the valorization of lignocellulosic biomass, but lignin-based materials and chemicals represent potential value-added products for biorefineries that could significantly improve the economics of a bioref...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2013-01-01
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| Series: | Biotechnology for Biofuels |
| Subjects: | |
| Online Access: | http://www.biotechnologyforbiofuels.com/content/6/1/14 |
| _version_ | 1811249569200078848 |
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| author | Varanasi Patanjali Singh Priyanka Auer Manfred Adams Paul D Simmons Blake A Singh Seema |
| author_facet | Varanasi Patanjali Singh Priyanka Auer Manfred Adams Paul D Simmons Blake A Singh Seema |
| author_sort | Varanasi Patanjali |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Lignin is often overlooked in the valorization of lignocellulosic biomass, but lignin-based materials and chemicals represent potential value-added products for biorefineries that could significantly improve the economics of a biorefinery. Fluctuating crude oil prices and changing fuel specifications are some of the driving factors to develop new technologies that could be used to convert polymeric lignin into low molecular weight lignin and or monomeric aromatic feedstocks to assist in the displacement of the current products associated with the conversion of a whole barrel of oil. We present an approach to produce these chemicals based on the selective breakdown of lignin during ionic liquid pretreatment.</p> <p>Results</p> <p>The lignin breakdown products generated are found to be dependent on the starting biomass, and significant levels were generated on dissolution at 160°C for 6 hrs. Guaiacol was produced on dissolution of biomass and technical lignins. Vanillin was produced on dissolution of kraft lignin and eucalytpus. Syringol and allyl guaiacol were the major products observed on dissolution of switchgrass and pine, respectively, whereas syringol and allyl syringol were obtained by dissolution of eucalyptus. Furthermore, it was observed that different lignin-derived products could be generated by tuning the process conditions.</p> <p>Conclusions</p> <p>We have developed an ionic liquid based process that depolymerizes lignin and converts the low molecular weight lignin fractions into a variety of renewable chemicals from biomass. The generated chemicals (phenols, guaiacols, syringols, eugenol, catechols), their oxidized products (vanillin, vanillic acid, syringaldehyde) and their easily derivatized hydrocarbons (benzene, toluene, xylene, styrene, biphenyls and cyclohexane) already have relatively high market value as commodity and specialty chemicals, green building materials, nylons, and resins.</p> |
| first_indexed | 2024-04-12T15:48:59Z |
| format | Article |
| id | doaj.art-b592c4e6e986427aa286d099b51a323e |
| institution | Directory Open Access Journal |
| issn | 1754-6834 |
| language | English |
| last_indexed | 2024-04-12T15:48:59Z |
| publishDate | 2013-01-01 |
| publisher | BMC |
| record_format | Article |
| series | Biotechnology for Biofuels |
| spelling | doaj.art-b592c4e6e986427aa286d099b51a323e2022-12-22T03:26:35ZengBMCBiotechnology for Biofuels1754-68342013-01-01611410.1186/1754-6834-6-14Survey of renewable chemicals produced from lignocellulosic biomass during ionic liquid pretreatmentVaranasi PatanjaliSingh PriyankaAuer ManfredAdams Paul DSimmons Blake ASingh Seema<p>Abstract</p> <p>Background</p> <p>Lignin is often overlooked in the valorization of lignocellulosic biomass, but lignin-based materials and chemicals represent potential value-added products for biorefineries that could significantly improve the economics of a biorefinery. Fluctuating crude oil prices and changing fuel specifications are some of the driving factors to develop new technologies that could be used to convert polymeric lignin into low molecular weight lignin and or monomeric aromatic feedstocks to assist in the displacement of the current products associated with the conversion of a whole barrel of oil. We present an approach to produce these chemicals based on the selective breakdown of lignin during ionic liquid pretreatment.</p> <p>Results</p> <p>The lignin breakdown products generated are found to be dependent on the starting biomass, and significant levels were generated on dissolution at 160°C for 6 hrs. Guaiacol was produced on dissolution of biomass and technical lignins. Vanillin was produced on dissolution of kraft lignin and eucalytpus. Syringol and allyl guaiacol were the major products observed on dissolution of switchgrass and pine, respectively, whereas syringol and allyl syringol were obtained by dissolution of eucalyptus. Furthermore, it was observed that different lignin-derived products could be generated by tuning the process conditions.</p> <p>Conclusions</p> <p>We have developed an ionic liquid based process that depolymerizes lignin and converts the low molecular weight lignin fractions into a variety of renewable chemicals from biomass. The generated chemicals (phenols, guaiacols, syringols, eugenol, catechols), their oxidized products (vanillin, vanillic acid, syringaldehyde) and their easily derivatized hydrocarbons (benzene, toluene, xylene, styrene, biphenyls and cyclohexane) already have relatively high market value as commodity and specialty chemicals, green building materials, nylons, and resins.</p>http://www.biotechnologyforbiofuels.com/content/6/1/14Lignin valorizationIonic liquid pretreatmentRenewable chemicalsBiofuels |
| spellingShingle | Varanasi Patanjali Singh Priyanka Auer Manfred Adams Paul D Simmons Blake A Singh Seema Survey of renewable chemicals produced from lignocellulosic biomass during ionic liquid pretreatment Biotechnology for Biofuels Lignin valorization Ionic liquid pretreatment Renewable chemicals Biofuels |
| title | Survey of renewable chemicals produced from lignocellulosic biomass during ionic liquid pretreatment |
| title_full | Survey of renewable chemicals produced from lignocellulosic biomass during ionic liquid pretreatment |
| title_fullStr | Survey of renewable chemicals produced from lignocellulosic biomass during ionic liquid pretreatment |
| title_full_unstemmed | Survey of renewable chemicals produced from lignocellulosic biomass during ionic liquid pretreatment |
| title_short | Survey of renewable chemicals produced from lignocellulosic biomass during ionic liquid pretreatment |
| title_sort | survey of renewable chemicals produced from lignocellulosic biomass during ionic liquid pretreatment |
| topic | Lignin valorization Ionic liquid pretreatment Renewable chemicals Biofuels |
| url | http://www.biotechnologyforbiofuels.com/content/6/1/14 |
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