Lignocellulosic Ethanol Production from the Recovery of Stranded Driftwood Residues

Gianluca Cavalaglio, Mattia Gelosia, Silvia D’Antonio, Andrea Nicolini, Anna Laura Pisello, Marco Barbanera and Franco Cotana
Additional contact information
Gianluca Cavalaglio: CIRIAF-Biomass Research Center, University of Perugia, Via G. Duranti, Perugia 06125, Italy
Mattia Gelosia: CIRIAF-Biomass Research Center, University of Perugia, Via G. Duranti, Perugia 06125, Italy
Silvia D’Antonio: CIRIAF-Biomass Research Center, University of Perugia, Via G. Duranti, Perugia 06125, Italy
Andrea Nicolini: CIRIAF-Biomass Research Center, University of Perugia, Via G. Duranti, Perugia 06125, Italy
Anna Laura Pisello: CIRIAF-Biomass Research Center, University of Perugia, Via G. Duranti, Perugia 06125, Italy
Marco Barbanera: CIRIAF-Biomass Research Center, University of Perugia, Via G. Duranti, Perugia 06125, Italy
Franco Cotana: CIRIAF-Biomass Research Center, University of Perugia, Via G. Duranti, Perugia 06125, Italy

Energies, 2016, vol. 9, issue 8, 1-10

Abstract: This paper builds upon a research project funded by the Italian Ministry of Environment, and aims to recover stranded driftwood residues (SDRs), in order to transform a potential pollution and safety issue into valuable bio-resources. In particular, one of the experiments consisted of bioethanol production from lignocellulosic residues. The SDRs were gathered from the Italian coast (Abruzzo Region, Italy) after an intense storm. The biomass recalcitrance, due to its lignocellulosic structure, was reduced by a steam explosion (SE) pretreatment process. Four different pretreatment severity factors (R 0 ) were tested (LogR 0 3.65, 4.05, 4.24 and 4.64) in order to evaluate the pretreated material’s accessibility to enzymatic attack and the holocellulose (cellulose plus hemicellulose) recovery. A first enzymatic hydrolysis was performed on the pretreated materials by employing a solid/liquid (S/L) ratio of 1% (w/w) and an enzyme dosage of 30% (w enzyme/w cellulose), in order to estimate the maximum enzymatically accessible cellulose content. Since the primary goal of pretreatment and hydrolysis is to convert as much cellulose as possible into monomeric glucose and recover all the holocellulose, the two pretreated materials showing these features were selected for bioethanol production process. The pretreated materials underwent a semi-simultaneous saccharification and fermentation (SSSF). The SSSF process was performed into two lab-scale bioreactors (5 L) with an S/L ratio of 15% and an enzyme dosage of 15% for five days. The efficiency of the whole bioethanol production process was assessed as ethanol overall yields (g ethanol/100 g raw material). The best overall yield was achieved by sample BS04 (8.98 g ethanol/100 g raw material).

Keywords: stranded driftwood residues; bioethanol; steam explosion; cellulose hydrolysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.mdpi.com/1996-1073/9/8/634/pdf (application/pdf)
https://www.mdpi.com/1996-1073/9/8/634/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:9:y:2016:i:8:p:634-:d:75842

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().