Enhancement of Liquid and Gaseous Biofuels Production From Agro-Industrial Residues After Thermochemical and Enzymatic Pretreatment
In the present study, the effect of thermo-chemical pretreatment and enzymatic hydrolysis on the saccharification and the further bioconversion of two different types of lignocellulosic agro-industrial residues to bioethanol and methane, was investigated. The residues used were the sunflower straw (...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-10-01
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| Series: | Frontiers in Sustainable Food Systems |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fsufs.2019.00092/full |
| _version_ | 1818579810954248192 |
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| author | Georgia Antonopoulou Anastasios Kampranis Anastasios Kampranis Ioanna Ntaikou Gerasimos Lyberatos Gerasimos Lyberatos |
| author_facet | Georgia Antonopoulou Anastasios Kampranis Anastasios Kampranis Ioanna Ntaikou Gerasimos Lyberatos Gerasimos Lyberatos |
| author_sort | Georgia Antonopoulou |
| collection | DOAJ |
| description | In the present study, the effect of thermo-chemical pretreatment and enzymatic hydrolysis on the saccharification and the further bioconversion of two different types of lignocellulosic agro-industrial residues to bioethanol and methane, was investigated. The residues used were the sunflower straw (SS) and the cracked olive stones (OS) remaining after the olive oil production process. Biomasses were subjected to simultaneous chemical and thermal pretreatment using either dilute H2SO4 or dilute NaOH aqueous solutions of concentrations 0.5, 1, and 1.5% (w/v), at 121°C for 60 min. The saccharification of the complex carbohydrates due to pretreatment was determined in terms of the sugars released, and the effect of each pretreatment was evaluated statistically. The effect of the enzymatic hydrolysis of the biomasses using commercial cellulolytic enzymes on saccharification was also assessed and statistically evaluated in terms of different enzymatic loadings. Subsequently, the pre-treated wastes were used as a substrate for methane and ethanol production using mixed methanogenic consortia and the yeast Pachysolen tannophilus, respectively. |
| first_indexed | 2024-12-16T07:07:38Z |
| format | Article |
| id | doaj.art-81c7aa534f6e4633a532bf8aeaad19cd |
| institution | Directory Open Access Journal |
| issn | 2571-581X |
| language | English |
| last_indexed | 2024-12-16T07:07:38Z |
| publishDate | 2019-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Sustainable Food Systems |
| spelling | doaj.art-81c7aa534f6e4633a532bf8aeaad19cd2022-12-21T22:39:58ZengFrontiers Media S.A.Frontiers in Sustainable Food Systems2571-581X2019-10-01310.3389/fsufs.2019.00092481951Enhancement of Liquid and Gaseous Biofuels Production From Agro-Industrial Residues After Thermochemical and Enzymatic PretreatmentGeorgia Antonopoulou0Anastasios Kampranis1Anastasios Kampranis2Ioanna Ntaikou3Gerasimos Lyberatos4Gerasimos Lyberatos5Laboratory of Environmental Biotechnology, Institute of Chemical Engineering Sciences, Foundation for Research and Technology, Patras, GreeceDepartment of Agricultural Technology, School of Agricultural Technology and Food and Nutrition Technology, Technological Educational Institute (TEI) of Western Greece, Patras, GreeceSchool of Agriculture, University of Ioannina, Arta, GreeceLaboratory of Environmental Biotechnology, Institute of Chemical Engineering Sciences, Foundation for Research and Technology, Patras, GreeceLaboratory of Environmental Biotechnology, Institute of Chemical Engineering Sciences, Foundation for Research and Technology, Patras, GreeceSchool of Chemical Engineering, National Technical University of Athens, Athens, GreeceIn the present study, the effect of thermo-chemical pretreatment and enzymatic hydrolysis on the saccharification and the further bioconversion of two different types of lignocellulosic agro-industrial residues to bioethanol and methane, was investigated. The residues used were the sunflower straw (SS) and the cracked olive stones (OS) remaining after the olive oil production process. Biomasses were subjected to simultaneous chemical and thermal pretreatment using either dilute H2SO4 or dilute NaOH aqueous solutions of concentrations 0.5, 1, and 1.5% (w/v), at 121°C for 60 min. The saccharification of the complex carbohydrates due to pretreatment was determined in terms of the sugars released, and the effect of each pretreatment was evaluated statistically. The effect of the enzymatic hydrolysis of the biomasses using commercial cellulolytic enzymes on saccharification was also assessed and statistically evaluated in terms of different enzymatic loadings. Subsequently, the pre-treated wastes were used as a substrate for methane and ethanol production using mixed methanogenic consortia and the yeast Pachysolen tannophilus, respectively.https://www.frontiersin.org/article/10.3389/fsufs.2019.00092/fullpretreatmentsunflower strawolive stonesbioethanolmethane |
| spellingShingle | Georgia Antonopoulou Anastasios Kampranis Anastasios Kampranis Ioanna Ntaikou Gerasimos Lyberatos Gerasimos Lyberatos Enhancement of Liquid and Gaseous Biofuels Production From Agro-Industrial Residues After Thermochemical and Enzymatic Pretreatment Frontiers in Sustainable Food Systems pretreatment sunflower straw olive stones bioethanol methane |
| title | Enhancement of Liquid and Gaseous Biofuels Production From Agro-Industrial Residues After Thermochemical and Enzymatic Pretreatment |
| title_full | Enhancement of Liquid and Gaseous Biofuels Production From Agro-Industrial Residues After Thermochemical and Enzymatic Pretreatment |
| title_fullStr | Enhancement of Liquid and Gaseous Biofuels Production From Agro-Industrial Residues After Thermochemical and Enzymatic Pretreatment |
| title_full_unstemmed | Enhancement of Liquid and Gaseous Biofuels Production From Agro-Industrial Residues After Thermochemical and Enzymatic Pretreatment |
| title_short | Enhancement of Liquid and Gaseous Biofuels Production From Agro-Industrial Residues After Thermochemical and Enzymatic Pretreatment |
| title_sort | enhancement of liquid and gaseous biofuels production from agro industrial residues after thermochemical and enzymatic pretreatment |
| topic | pretreatment sunflower straw olive stones bioethanol methane |
| url | https://www.frontiersin.org/article/10.3389/fsufs.2019.00092/full |
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