The Consistency of Yields and Chemical Composition of HTL Bio-Oils from Lignins Produced by Different Preprocessing Technologies
This work evaluates the effect of feedstock type and composition on the conversion of lignin to liquid by solvolysis with formic acid as hydrogen donor (LtL), by analyzing the yields and molecular composition of the liquid products and interpreting them in terms of both the type and the preprocessin...
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| Format: | Article |
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2022-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/13/4707 |
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| author | Hilde Vik Halleraker Konstantinos Kalogiannis Angelos Lappas Rafael C. A. Castro Ines C. Roberto Solange I. Mussatto Tanja Barth |
| author_facet | Hilde Vik Halleraker Konstantinos Kalogiannis Angelos Lappas Rafael C. A. Castro Ines C. Roberto Solange I. Mussatto Tanja Barth |
| author_sort | Hilde Vik Halleraker |
| collection | DOAJ |
| description | This work evaluates the effect of feedstock type and composition on the conversion of lignin to liquid by solvolysis with formic acid as hydrogen donor (LtL), by analyzing the yields and molecular composition of the liquid products and interpreting them in terms of both the type and the preprocessing of the lignocellulosic biomass using chemometric data analysis. Lignin samples of different types and purities from softwood, hardwood, and grasses (rice straw and corn stover) have been converted to bio-oil, and the molecular composition analyzed and quantified using GC-MS. LtL solvolysis was found to be a robust method for lignin conversion in terms of converting all samples into bio-oils rich in phenolic compounds regardless of the purity of the lignin sample. The bio-oil yields ranged from 24–94 wt.% relative to lignin input and could be modelled well as a function of the elemental composition of the feedstock. On a molecular basis, the softwood-derived bio-oil contained the most guaiacol-derivatives, and syringol was correlated to hardwood. However, the connection between compounds in the bio-oil and lignin origin was less pronounced than the effects of the methods for biomass fractionation, showing that the pretreatment of the biomass dominates both the yield and molecular composition of the bio-oil and must be addressed as a primary concern when utilization of lignin in a biorefinery is planned. |
| first_indexed | 2024-03-09T21:56:35Z |
| format | Article |
| id | doaj.art-49dbcb2dee1841afa5c0247043450b90 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T21:56:35Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-49dbcb2dee1841afa5c0247043450b902023-11-23T19:56:07ZengMDPI AGEnergies1996-10732022-06-011513470710.3390/en15134707The Consistency of Yields and Chemical Composition of HTL Bio-Oils from Lignins Produced by Different Preprocessing TechnologiesHilde Vik Halleraker0Konstantinos Kalogiannis1Angelos Lappas2Rafael C. A. Castro3Ines C. Roberto4Solange I. Mussatto5Tanja Barth6Department of Chemistry, University of Bergen, Allègaten 41, 5007 Bergen, NorwayChemical Process and Energy Resources Institute (CPERI), Centre for Research and Technology Hellas (CERTH), 6th km Harilaou-Thermi Rd, 57001 Thessaloniki, GreeceChemical Process and Energy Resources Institute (CPERI), Centre for Research and Technology Hellas (CERTH), 6th km Harilaou-Thermi Rd, 57001 Thessaloniki, GreeceDepartmento de Biotecnologia Escola de Engenharia de Lorena, Universidade de São Paulo, Lorena 12602-810, SP, BrazilDepartmento de Biotecnologia Escola de Engenharia de Lorena, Universidade de São Paulo, Lorena 12602-810, SP, BrazilDepartment of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads, Building 223, 2800 Kongens Lyngby, DenmarkDepartment of Chemistry, University of Bergen, Allègaten 41, 5007 Bergen, NorwayThis work evaluates the effect of feedstock type and composition on the conversion of lignin to liquid by solvolysis with formic acid as hydrogen donor (LtL), by analyzing the yields and molecular composition of the liquid products and interpreting them in terms of both the type and the preprocessing of the lignocellulosic biomass using chemometric data analysis. Lignin samples of different types and purities from softwood, hardwood, and grasses (rice straw and corn stover) have been converted to bio-oil, and the molecular composition analyzed and quantified using GC-MS. LtL solvolysis was found to be a robust method for lignin conversion in terms of converting all samples into bio-oils rich in phenolic compounds regardless of the purity of the lignin sample. The bio-oil yields ranged from 24–94 wt.% relative to lignin input and could be modelled well as a function of the elemental composition of the feedstock. On a molecular basis, the softwood-derived bio-oil contained the most guaiacol-derivatives, and syringol was correlated to hardwood. However, the connection between compounds in the bio-oil and lignin origin was less pronounced than the effects of the methods for biomass fractionation, showing that the pretreatment of the biomass dominates both the yield and molecular composition of the bio-oil and must be addressed as a primary concern when utilization of lignin in a biorefinery is planned.https://www.mdpi.com/1996-1073/15/13/4707biomasshydrothermal liquefactionligninlignin to liquidsolvolysis |
| spellingShingle | Hilde Vik Halleraker Konstantinos Kalogiannis Angelos Lappas Rafael C. A. Castro Ines C. Roberto Solange I. Mussatto Tanja Barth The Consistency of Yields and Chemical Composition of HTL Bio-Oils from Lignins Produced by Different Preprocessing Technologies Energies biomass hydrothermal liquefaction lignin lignin to liquid solvolysis |
| title | The Consistency of Yields and Chemical Composition of HTL Bio-Oils from Lignins Produced by Different Preprocessing Technologies |
| title_full | The Consistency of Yields and Chemical Composition of HTL Bio-Oils from Lignins Produced by Different Preprocessing Technologies |
| title_fullStr | The Consistency of Yields and Chemical Composition of HTL Bio-Oils from Lignins Produced by Different Preprocessing Technologies |
| title_full_unstemmed | The Consistency of Yields and Chemical Composition of HTL Bio-Oils from Lignins Produced by Different Preprocessing Technologies |
| title_short | The Consistency of Yields and Chemical Composition of HTL Bio-Oils from Lignins Produced by Different Preprocessing Technologies |
| title_sort | consistency of yields and chemical composition of htl bio oils from lignins produced by different preprocessing technologies |
| topic | biomass hydrothermal liquefaction lignin lignin to liquid solvolysis |
| url | https://www.mdpi.com/1996-1073/15/13/4707 |
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