A Comparative Study of Sulfidogenic and Methanogenic Activities During the Treatment of Landfill Leachate: Part I

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dc.contributor.authorErdirençelebi, Dilek
dc.contributor.authorÖztürk, İzzet
dc.date.accessioned2020-03-26T17:02:56Z
dc.date.available2020-03-26T17:02:56Z
dc.date.issued2006
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractA comprehensive anaerobic leachate treatment in batch reactors was conducted for 9 months. Activities of two main bacterial groups, sulfidogens and methanogens were observed with monitoring parameters as chemical oxygen demand (COD), total gas production, pH, alkalinity, dissolved sulfide and volatile suspended solids/total suspended solids (VSS/TSS). Leachate contained high concentrations of volatile fatty acids. Some competition between microbial species was observed. COD was applied at a range of 1100-8200 mg/L at a slowly increasing rate over time. COD removal was mostly above 80%, dissolved sulfide was produced at a range of 100-450 mg/L in the first weeks, proving high sulfidogenic activity and making 40-50% of COD removal. Methanogenesis seemed under stress and improved after several weeks with increasing COD load whereas hydrogen sulfide (HS-) production leveled off around 100 mg/L, making 4-8% COD removal by sulfidogens. Then, 40-70% of overall COD removal was achieved by methanogens. Volatile fatty acids (VFA) except acetic acid (propionic, isobutyric, butyric, isovaleric, valeric, caproic and heptanoic acids) were readily degraded and found near detection limit on gas chromatographic runs, accordingly VFA-oxidizing bacteria were assumed to be highly active and tolerant to sulfide levels encountered in our study, also with hydrogenotrophic groups providing favorable conditions for the process. pH was the key parameter to determine the degree of inhibition from sulfurous species. Alkalinity was produced proportionally with COD applied as a result of VFA degradation. Overall system performance was good and optimum pH was 7.8-8.2 at which inhibition due to unionized VFA was eliminated.en_US
dc.identifier.citationErdirençelebi, D., Öztürk, İ., (2006). A Comparative Study of Sulfidogenic and Methanogenic Activities During the Treatment of Landfill Leachate: Part I. Journal of Environmental Science and Health Part a, 41(4), 687-701. Doi: 10.1080/10934520600575093
dc.identifier.doi10.1080/10934520600575093en_US
dc.identifier.endpage701en_US
dc.identifier.issn1093-4529en_US
dc.identifier.issn1532-4117en_US
dc.identifier.issue4en_US
dc.identifier.pmid16779941en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage687en_US
dc.identifier.urihttps://dx.doi.org/10.1080/10934520600575093
dc.identifier.urihttps://hdl.handle.net/20.500.12395/20282
dc.identifier.volume41en_US
dc.identifier.wosWOS:000236610000013en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.institutionauthorErdirençelebi, Dilek
dc.language.isoenen_US
dc.publisherTaylor & Francis Incen_US
dc.relation.ispartofJournal of Environmental Science and Health Part aen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectSulfidogensen_US
dc.subjectMethanogensen_US
dc.subjectAnaerobic treatmenten_US
dc.subjectLeachateen_US
dc.subjectVolatile fatty acidsen_US
dc.subjectHydrogen sulfide productionen_US
dc.subjectİnhibitionen_US
dc.titleA Comparative Study of Sulfidogenic and Methanogenic Activities During the Treatment of Landfill Leachate: Part Ien_US
dc.typeArticleen_US

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