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dc.contributor.authorKennelly, Colm
dc.contributor.authorGerrity, Seán
dc.contributor.authorCollins, Gavin
dc.contributor.authorClifford, Eoghan
dc.date.accessioned2019-03-27T09:10:41Z
dc.date.available2019-03-27T09:10:41Z
dc.date.issued2014-01-03
dc.identifier.citationKennelly, C., Gerrity, S., Collins, G., & Clifford, E. (2014). Liquid phase optimisation in a horizontal flow biofilm reactor (HFBR) technology for the removal of methane at low temperatures. Chemical Engineering Journal, 242, 144-154. doi: https://doi.org/10.1016/j.cej.2013.12.071en_IE
dc.identifier.issn1385-8947
dc.identifier.urihttp://hdl.handle.net/10379/15060
dc.description.abstractMethane (CH4) is a potent greenhouse gas often emitted in low concentrations from waste sector activities. Biological oxidation techniques have the potential to offer effective methods for the remediation of such emissions. In this paper, methods of improving the CH4 oxidation performance of a horizontal flow biofilm reactor (HFBR) technology, operated at low temperatures, are investigated.Three pilot scale HFBRs were operated over three studies (Study 1,2 & 3) lasting 310 days in total. The reactors were loaded with 13.2 g CH4/m(3)/h during each study and operated at an average temperature of 10 degrees C.In Study 1, nutrients were added to the biofilm via a liquid nutrient feed (LNF) comprising water and nutrient mineral salts. Average removals were 4.2, 3.1 and 2.3 g CH4/m(3)/h for HFBRs 1, 2 and 3 respectively.In Study 2 silicone oil was added to the LNF of all three HFBRs. Average removals increased, when compared to Study 1, by 31%, 79% and 78% for HFBRs 1, 2 and 3 respectively.In Study 3 a non ionic surfactant (Brij 35) was added to the LNF and silicone oil liquid phase of HFBRs 1 and 2. The operating conditions of HFBR 3 were not changed and it was used as a control. A concentration of 1.0 g Brij 35/L proved most effective in improving reactor performance; with removal rates increasing by 105% and 171% for HFBRs 1 and 2 respectively when compared to Study 1.These results indicate the potential of liquid phase optimisation for improving mass transfer rates and removal performances in biological reactors treating CH4. (C) 2014 Elsevier B.V. All rights reserved.en_IE
dc.description.sponsorshipThe authors would like to gratefully acknowledge financial support from Science Foundation Ireland (SFI) and Enterprise Ireland.en_IE
dc.formatapplication/pdfen_IE
dc.language.isoenen_IE
dc.publisherElsevieren_IE
dc.relation.ispartofChemical Engineering Journalen
dc.subjectBiological oxidationen_IE
dc.subjectBiofilm reactoren_IE
dc.subjectMethaneen_IE
dc.subjectNon ionic surfactanten_IE
dc.subjectSecondary liquid phaseen_IE
dc.subjectSilicone oilen_IE
dc.subject2-PHASE PARTITIONING BIOREACTORSen_IE
dc.subjectOXIDATIONen_IE
dc.subjectPARAMETERSen_IE
dc.subjectNITROGENen_IE
dc.subjectBIODEGRADATIONen_IE
dc.subjectBIOFILTRATIONen_IE
dc.subjectDIFFUSIONen_IE
dc.subjectEMISSIONen_IE
dc.subjectFILTERSen_IE
dc.subjectGASESen_IE
dc.titleLiquid phase optimisation in a horizontal flow biofilm reactor (HFBR) technology for the removal of methane at low temperaturesen_IE
dc.typeArticleen_IE
dc.date.updated2019-03-22T16:13:55Z
dc.identifier.doi10.1016/j.cej.2013.12.071
dc.local.publishedsourcehttps://doi.org/10.1016/j.cej.2013.12.071en_IE
dc.description.peer-reviewedpeer-reviewed
dc.contributor.funderScience Foundation Irelanden_IE
dc.contributor.funderEnterprise Irelanden_IE
dc.internal.rssid6299541
dc.local.contactEoghan Clifford, Room 1035, Alice Perry Engineering Building, Nui Galway, Galway. 2219 Email: eoghan.clifford@nuigalway.ie
dc.local.copyrightcheckedYes
dc.local.versionACCEPTED
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