Performance of polydimethylsiloxane membrane contactor process for selective hydrogen sulfide removal from biogas

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dc.contributor.authorTilahun, Ebrahim
dc.contributor.authorBayrakdar, Alper
dc.contributor.authorSahinkaya, Erkan
dc.contributor.authorCalli, Baris
dc.date.accessioned2024-02-23T14:16:29Z
dc.date.available2024-02-23T14:16:29Z
dc.date.issued2017
dc.departmentNEÜen_US
dc.description.abstractH2S in biogas affects the co-generation performance adversely by corroding some critical components within the engine and it has to be removed in order to improve the biogas quality. This work presents the use of polydimethylsiloxane (PDMS) membrane contactor for selective removal of H2S from the biogas. Experiments were carried out to evaluate the effects of different pH of absorption liquid, biogas flowrate and temperature on the absorption performances. The results revealed that at the lowest loading rate (91 mg H2S/m2 h) more than 98% H2S and 59% CO2 absorption efficiencies were achieved. The CH4 content in the treated gas increased from 60 to 80% with nearly 5% CH4 loss. Increasing the pH (710) and loading rate (91355 mg H2S/m(2)h) enhanced the H2S absorption capacity, and the maximum H2S/CO2 and H2S/CH4 selectivity factors were 2.5 and 58, respectively. Temperature played a key role in the process and lower temperature was beneficial for intensifying H2S absorption performance. The highest H2S fluxes at pH 10 and 7 were 3.4 g/m(2) d and 1.8 g/m(2) d with overall mass transfer coefficients of 6.91 x 10(-6) and 4.99 x 10(-6) m/s, respectively. The results showed that moderately high H2S fluxes with low CH4 loss may be achieved by using a robust and cost-effective membrane based absorption process for desulfurization of biogas. A tubular PDMS membrane contactor was tested for the first time to remove H2S from biogas under slightly alkaline conditions and the suggested process could be a promising for real scale applications.en_US
dc.description.sponsorshipYTB (Presidency for Turks and Abroad and Related Communities); Institute of Pure and Applied Sciences, Marmara Universityen_US
dc.description.sponsorshipThis research was financially supported by YTB (Presidency for Turks and Abroad and Related Communities) and Institute of Pure and Applied Sciences, Marmara University.en_US
dc.identifier.doi10.1016/j.wasman.2017.01.011
dc.identifier.endpage257en_US
dc.identifier.issn0956-053X
dc.identifier.pmid28094159en_US
dc.identifier.scopus2-s2.0-85009736701en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage250en_US
dc.identifier.urihttps://doi.org/10.1016/j.wasman.2017.01.011
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12672
dc.identifier.volume61en_US
dc.identifier.wosWOS:000398746400027en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofWaste Managementen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBiogas Cleaningen_US
dc.subjectMembrane Contactoren_US
dc.subjectHydrogen Sulfide Removalen_US
dc.subjectSilicone Membraneen_US
dc.titlePerformance of polydimethylsiloxane membrane contactor process for selective hydrogen sulfide removal from biogasen_US
dc.typeArticleen_US

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