Assessing straw digestate as feedstock for bioethanol production

Stoumpou, Vasileia; Novakovic, Jelica; Kontogianni, Nikoleta; Barampouti, Elli Maria; Mai, Sofia; Moustakas, Kostantinos; Malamis, Dimitris; Loizidou, Maria

dc.contributor.author	Stoumpou, Vasileia
dc.contributor.author	Novakovic, Jelica
dc.contributor.author	Kontogianni, Nikoleta
dc.contributor.author	Barampouti, Elli Maria
dc.contributor.author	Mai, Sofia
dc.contributor.author	Moustakas, Kostantinos
dc.contributor.author	Malamis, Dimitris
dc.contributor.author	Loizidou, Maria
dc.date.accessioned	2021-03-23T12:11:07Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/53124
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.20822
dc.relation	https://doi.org/10.1016/j.renene.2020.02.021	el
dc.rights	Default License
dc.subject	Biorefinery	en
dc.title	Assessing straw digestate as feedstock for bioethanol production	en
heal.type	journalArticle
heal.classification	Environemtal engineering	en
heal.dateAvailable	2022-03-22T22:00:00Z
heal.access	embargo
heal.recordProvider	ntua	el
heal.publicationDate	2020-06-20
heal.bibliographicCitation	Stoumpou, V., Novakovic, J., Kontogianni, N., Barampouti, E. M., Mai, S., Moustakas, K. Malamis,D. Loizidou, M. (2020). Assessing straw digestate as feedstock for bioethanol production. Renewable Energy, 153, 261-269.	en
heal.abstract	Anaerobically digested agricultural waste, such as straw digestate, still consists of residual lignin and carbohydrates that may be utilised as substrate for sugars production and alcoholic fermentation. Chemical pretreatment combined with enzymatic hydrolysis was investigated as an alternative valorisation route for digestate. Acid pretreatment along with enzymatic hydrolysis was found to yield low sugars recoveries (2–39%), casting doubt on its suitability for ethanol production. In contrary, alkaline pretreatment and enzymatic hydrolysis is a better approach with elevated saccharification yields reaching up to 72%. Ethanol fermentation of alkaline pretreated digestate presented yields up to 65% consuming all the available glucose, implying that no inhibitory factors are present. Conclusively, according to the experimental results the perspective of a new integrated system is enforced. This system combines ethanol production with anaerobic digestion simultaneously producing energy in the form of ethanol and methane and improving the overall energy balance.	en
heal.sponsor	The authors acknowledge funding through European Horizon 2020 NoAW (No Agro Waste, Grant no. 688338) project for supporting this work.	en
heal.publisher	Elsevier Ltd	en
heal.journalName	Renewable Energy	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	false
dc.identifier.doi	10.1016/j.renene.2020.02.021	el