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Evaluation of the microbial diversity of denitrifying bacteria in batch reactor

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorMaintinguer, Sandra Imaculada
dc.creatorSakamoto, I. K.
dc.creatorAdorno, A.
dc.creatorVaresche,
dc.date2014-05-27T11:29:53Z
dc.date2016-10-25T18:50:48Z
dc.date2014-05-27T11:29:53Z
dc.date2016-10-25T18:50:48Z
dc.date2013-07-01
dc.date.accessioned2017-04-06T02:29:45Z
dc.date.available2017-04-06T02:29:45Z
dc.identifierBrazilian Journal of Chemical Engineering, v. 30, n. 3, p. 457-465, 2013.
dc.identifier0104-6632
dc.identifierhttp://hdl.handle.net/11449/75848
dc.identifierhttp://acervodigital.unesp.br/handle/11449/75848
dc.identifier10.1590/S0104-66322013000300004
dc.identifierS0104-66322013000300004
dc.identifierWOS:000328164600004
dc.identifier2-s2.0-84884872855.pdf
dc.identifier2-s2.0-84884872855
dc.identifierhttp://dx.doi.org/10.1590/S0104-66322013000300004
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/896579
dc.descriptionMicrobial communities in an industrial activated sludge plant may contribute to the denitrification process, but the information on the microorganisms present in denitrifying reactors is still scarce. Removal of inorganic nitrogen compounds can be accomplished by the addition of carbon sources to the biological process of denitrification. Ethanol is an economically viable alternative as a carbon source in tropical countries like Brazil, with large-scale production from sugarcane. This paper reports the successful aplication of activated sludge with nitrate and ethanol in a batch anaerobic reactor. The operation lasted 61.5 h with total consumption of nitrate in 42.5 h, nitrite generation (2.0 mg/L) and ethanol consumption (830.0 mg/L) in 23.5 h. Denitrifying cell counts by the most probable number at the start of the operation were lower than at the end, confirming the ability of the inoculum from activated sludge for the denitrification process. The samples from cell counts were identified as Acidovorax sp., Acinetobacter sp., Comamonas sp. and uncultured bacteria. Therefore, these species may be involved in nitrate reduction and ethanol consumption in the batch reactor.
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageeng
dc.relationBrazilian Journal of Chemical Engineering
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectAcidovorax
dc.subjectAcinetobacter
dc.subjectActivated sludge system
dc.subjectEthanol
dc.subjectNitrate
dc.titleEvaluation of the microbial diversity of denitrifying bacteria in batch reactor
dc.typeOtro


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