Evaluation of a pilot-scaled paddle dryer for the production of ethanol from lignocellulose including inhibitor removal and high-solids enzymatic hydrolysis
The advantage of using paddle dryers (PD) in the production of sugars and 2nd generation ethanol from pretreated wheat straw was investigated. This machinery was employed in order to detoxify steam-exploded substrates and to mix different slurries in the hydrolysis step. The obtained hydrolysate was...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2016-03-01
|
| Series: | Biotechnology Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2215017X15000703 |
| _version_ | 1798046461812801536 |
|---|---|
| author | Egidio Viola Giuseppe Arcieri Francesco Zimbardi Vito Valerio Nadia Cerone Ugo De Corato |
| author_facet | Egidio Viola Giuseppe Arcieri Francesco Zimbardi Vito Valerio Nadia Cerone Ugo De Corato |
| author_sort | Egidio Viola |
| collection | DOAJ |
| description | The advantage of using paddle dryers (PD) in the production of sugars and 2nd generation ethanol from pretreated wheat straw was investigated. This machinery was employed in order to detoxify steam-exploded substrates and to mix different slurries in the hydrolysis step. The obtained hydrolysate was fermented by the yeast Saccharomyces cerevisiae. Acetic acid and furfural were reduced up to 11 and 26 fold respectively in the detoxified substrate. When fermentation was carried out at low solid suspension, the use of PD was as effective as water extraction in detoxifying exploded biomass, giving ethanol yields of 90% at 0.05 solid/liquid ratio (S/L) and 80% at 0.10 S/L. Moreover, by using PD the cellulose conversion yield was significantly improved in the hydrolysis step: when operating at higher S/L (0.4), the hydrolysis efficiency was twice the one achieved by using a bioreactor with a Rushton stirrer. |
| first_indexed | 2024-04-11T23:38:46Z |
| format | Article |
| id | doaj.art-6a030f90921441e9ace339fb7243989a |
| institution | Directory Open Access Journal |
| issn | 2215-017X |
| language | English |
| last_indexed | 2024-04-11T23:38:46Z |
| publishDate | 2016-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Biotechnology Reports |
| spelling | doaj.art-6a030f90921441e9ace339fb7243989a2022-12-22T03:56:52ZengElsevierBiotechnology Reports2215-017X2016-03-019C384510.1016/j.btre.2015.12.005Evaluation of a pilot-scaled paddle dryer for the production of ethanol from lignocellulose including inhibitor removal and high-solids enzymatic hydrolysisEgidio Viola0Giuseppe Arcieri1Francesco Zimbardi2Vito Valerio3Nadia Cerone4Ugo De Corato5Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Trisaia Research Centre, S.S. 106 Jonica, km 419 + 500, 75026 Rotondella, MT, ItalyItalian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Trisaia Research Centre, S.S. 106 Jonica, km 419 + 500, 75026 Rotondella, MT, ItalyItalian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Trisaia Research Centre, S.S. 106 Jonica, km 419 + 500, 75026 Rotondella, MT, ItalyItalian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Trisaia Research Centre, S.S. 106 Jonica, km 419 + 500, 75026 Rotondella, MT, ItalyItalian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Trisaia Research Centre, S.S. 106 Jonica, km 419 + 500, 75026 Rotondella, MT, ItalyItalian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Territorial Office of Bari—Uni. Versus Consortium, Viale Japigia 188, Bari 70126, ItalyThe advantage of using paddle dryers (PD) in the production of sugars and 2nd generation ethanol from pretreated wheat straw was investigated. This machinery was employed in order to detoxify steam-exploded substrates and to mix different slurries in the hydrolysis step. The obtained hydrolysate was fermented by the yeast Saccharomyces cerevisiae. Acetic acid and furfural were reduced up to 11 and 26 fold respectively in the detoxified substrate. When fermentation was carried out at low solid suspension, the use of PD was as effective as water extraction in detoxifying exploded biomass, giving ethanol yields of 90% at 0.05 solid/liquid ratio (S/L) and 80% at 0.10 S/L. Moreover, by using PD the cellulose conversion yield was significantly improved in the hydrolysis step: when operating at higher S/L (0.4), the hydrolysis efficiency was twice the one achieved by using a bioreactor with a Rushton stirrer.http://www.sciencedirect.com/science/article/pii/S2215017X15000703Pilot plant studyBioethanolPaddle dryerDetoxificationHydrolysis |
| spellingShingle | Egidio Viola Giuseppe Arcieri Francesco Zimbardi Vito Valerio Nadia Cerone Ugo De Corato Evaluation of a pilot-scaled paddle dryer for the production of ethanol from lignocellulose including inhibitor removal and high-solids enzymatic hydrolysis Biotechnology Reports Pilot plant study Bioethanol Paddle dryer Detoxification Hydrolysis |
| title | Evaluation of a pilot-scaled paddle dryer for the production of ethanol from lignocellulose including inhibitor removal and high-solids enzymatic hydrolysis |
| title_full | Evaluation of a pilot-scaled paddle dryer for the production of ethanol from lignocellulose including inhibitor removal and high-solids enzymatic hydrolysis |
| title_fullStr | Evaluation of a pilot-scaled paddle dryer for the production of ethanol from lignocellulose including inhibitor removal and high-solids enzymatic hydrolysis |
| title_full_unstemmed | Evaluation of a pilot-scaled paddle dryer for the production of ethanol from lignocellulose including inhibitor removal and high-solids enzymatic hydrolysis |
| title_short | Evaluation of a pilot-scaled paddle dryer for the production of ethanol from lignocellulose including inhibitor removal and high-solids enzymatic hydrolysis |
| title_sort | evaluation of a pilot scaled paddle dryer for the production of ethanol from lignocellulose including inhibitor removal and high solids enzymatic hydrolysis |
| topic | Pilot plant study Bioethanol Paddle dryer Detoxification Hydrolysis |
| url | http://www.sciencedirect.com/science/article/pii/S2215017X15000703 |
| work_keys_str_mv | AT egidioviola evaluationofapilotscaledpaddledryerfortheproductionofethanolfromlignocelluloseincludinginhibitorremovalandhighsolidsenzymatichydrolysis AT giuseppearcieri evaluationofapilotscaledpaddledryerfortheproductionofethanolfromlignocelluloseincludinginhibitorremovalandhighsolidsenzymatichydrolysis AT francescozimbardi evaluationofapilotscaledpaddledryerfortheproductionofethanolfromlignocelluloseincludinginhibitorremovalandhighsolidsenzymatichydrolysis AT vitovalerio evaluationofapilotscaledpaddledryerfortheproductionofethanolfromlignocelluloseincludinginhibitorremovalandhighsolidsenzymatichydrolysis AT nadiacerone evaluationofapilotscaledpaddledryerfortheproductionofethanolfromlignocelluloseincludinginhibitorremovalandhighsolidsenzymatichydrolysis AT ugodecorato evaluationofapilotscaledpaddledryerfortheproductionofethanolfromlignocelluloseincludinginhibitorremovalandhighsolidsenzymatichydrolysis |