dc.contributor.author | Dessì P, Asunis F, Ravishankar H, Cocco FG, De Gioannis G, Muntoni A, Lens PNL | |
dc.contributor.author | Dessì, Paolo | |
dc.contributor.author | Asunis, Fabiano | |
dc.contributor.author | Ravishankar, Harish | |
dc.contributor.author | Cocco, Francesco Giuseppe | |
dc.contributor.author | De Gioannis, Giorgia | |
dc.contributor.author | Muntoni, Aldo | |
dc.contributor.author | Lens, Piet N.L. | |
dc.date.accessioned | 2021-01-18T10:37:09Z | |
dc.date.issued | 2020-08-01 | |
dc.identifier.citation | Dessì, Paolo, Asunis, Fabiano, Ravishankar, Harish, Cocco, Francesco Giuseppe, De Gioannis, Giorgia, Muntoni, Aldo, & Lens, Piet N. L. (2020). Fermentative hydrogen production from cheese whey with in-line, concentration gradient-driven butyric acid extraction. International Journal of Hydrogen Energy, 45(46), 24453-24466. doi:https://doi.org/10.1016/j.ijhydene.2020.06.081 | en_IE |
dc.identifier.issn | 0360-3199 | |
dc.identifier.uri | http://hdl.handle.net/10379/16458 | |
dc.description.abstract | Hydrogen (H2) generation from cheese whey with simultaneous production and extraction of volatile fatty acids (VFAs) was studied in UASB reactors at two temperatures (20 and 35 °C) and pH values (5.0 and 4.5). The extraction module, installed through a recirculation loop, was a silicone tube coil submerged in water, which allows concentration-driven extraction of undissociated VFAs. Operating conditions were selected as a compromise for the recovery of both H2 and VFAs. Batch experiments showed a higher yield (0.9 mol H2 mol−1 glucoseeq.) at 35 °C and pH 5.0, regardless of the presence of the extraction module, whereas lower yields were obtained at pH 4.5 and 20 °C (0.5 and 0.3 mol H2 mol−1 glucoseeq., respectively). VFAs crossed the silicone membrane, with a strong preference for butyric over propionic and acetic acid due to its higher hydrophobicity. Sugars, lactic acid and nutrients were retained, resulting in an extracted solution of up to 2.5 g L−1 butyric acid with more than 90% purity. Continuous experiment confirmed those results, with production rates up to 2.0 L H2 L−1 d−1 and butyric acid extraction both in-line (from the UASB recirculation) and off-line (from the UASB effluent). In-line VFA extraction can reduce the operating costs of fermentation, facilitating downstream processing for the recovery of marketable VFAs without affecting the H2 production. | en_IE |
dc.description.sponsorship | This work was funded by the Science Foundation of Ireland (SFI) Research
Professorship Programme on Innovative Energy Technologies for Bioenergy, Biofuels
and a Sustainable Irish Bioeconomy (IETSBIO3
, award 15/RP/2763). Fabiano Asunis
gratefully acknowledges Sardinian Regional Government for the financial support of his
PhD scholarship (P.O.R. Sardegna F.S.E. - Operational Programme of the
Autonomous Region of Sardinia, European Social Fund 2014-2020 - Axis III
Education and training, Thematic goal 10, Investment Priority 10ii), Specific goal 10.5. | en_IE |
dc.format | application/pdf | en_IE |
dc.language.iso | en | en_IE |
dc.publisher | Elsevier | en_IE |
dc.relation.ispartof | International Journal Of Hydrogen Energy | en |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Ireland | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ | |
dc.subject | Biohydrogen | en_IE |
dc.subject | Butyric acid | en_IE |
dc.subject | Dairy wastewater | en_IE |
dc.subject | Pertraction | en_IE |
dc.subject | Selective extraction | en_IE |
dc.subject | Waste biorefinery | en_IE |
dc.title | Fermentative hydrogen production from cheese whey with in-line, concentration gradient-driven butyric acid extraction | en_IE |
dc.type | Article | en_IE |
dc.date.updated | 2021-01-14T15:41:50Z | |
dc.identifier.doi | 10.1016/j.ijhydene.2020.06.081 | |
dc.local.publishedsource | https://doi.org/10.1016/j.ijhydene.2020.06.081 | en_IE |
dc.description.peer-reviewed | peer-reviewed | |
dc.contributor.funder | Science Foundation Ireland | en_IE |
dc.contributor.funder | Sardinian Regional Government | en_IE |
dc.description.embargo | 2022-08-01 | |
dc.internal.rssid | 24366368 | |
dc.local.contact | Paolo Dessi. Email: paolo.dessi@nuigalway.ie | |
dc.local.copyrightchecked | Yes | |
dc.local.version | ACCEPTED | |
nui.item.downloads | 100 | |