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Investigation of different pretreatment methods of Mediterranean-type ecosystem agricultural residues: characterisation of pretreatment products, high-solids enzymatic hydrolysis and bioethanol production
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Kemiteknik. Laboratory of General and Inorganic Chemical Technology, Department of Chemistry, Aristotle University of Thessaloniki.ORCID-id: 0000-0002-9868-9031
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Kemiteknik.ORCID-id: 0000-0002-3687-6173
Laboratory of General and Inorganic Chemical Technology, Department of Chemistry, Aristotle University of Thessaloniki; Chemical Process and Energy Resources Institute, Centre for Research and Technology-Hellas (CPERI/CERTH).
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Kemiteknik.ORCID-id: 0000-0001-7500-2367
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2018 (Engelska)Ingår i: Biofuels, ISSN 1759-7269, E-ISSN 1759-7277, Vol. 9, nr 5, s. 545-558Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Agricultural and agro-industrial lignocellulosic residues represent an important renewable resource for the production of fuels and chemicals towards a bio-based economy. Olive pruning, vineyard pruning and almond shells are important residues from agricultural activities in Mediterranean-type ecosystems. In the current work, bioethanol production from the above three types of agro-residues was studied, focusing on the effect of different pretreatment methods on enzymatic saccharrification efficiency of cellulose and production of second-generation bioethanol. Dilute acid, hydrothermal and steam explosion pretreatments were compared in order to remove hemicellulose and facilitate the subsequent enzymatic hydrolysis of the hemicellulose-deficient biomass to glucose. Enzymatic hydrolysis was performed in a free-fall mixing reactor enabling high solids loading of 23% w/w. This allowed hydrolysis of up to 67% of available cellulose in almond shells and close to 50% in olive pruning samples, and facilitated high ethanol production in the subsequent fermentation step; the highest ethanol concentrations achieved were 47.8 g/L for almond shells after steam explosion and 42 g/L for hydrothermally pretreated olive pruning residue.

Ort, förlag, år, upplaga, sidor
Taylor & Francis, 2018. Vol. 9, nr 5, s. 545-558
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Bioprocessteknik
Forskningsämne
Biokemisk processteknik
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URN: urn:nbn:se:ltu:diva-65977DOI: 10.1080/17597269.2017.1378988ISI: 000456114000002Scopus ID: 2-s2.0-85030181650OAI: oai:DiVA.org:ltu-65977DiVA, id: diva2:1147211
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Validerad;2019;Nivå 2;2019-04-12 (johcin)

Tillgänglig från: 2017-10-05 Skapad: 2017-10-05 Senast uppdaterad: 2019-04-12Bibliografiskt granskad

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Nitsos, ChristosMatsakas, LeonidasRova, UlrikaChristakopoulos, Paul

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