Sulfate removal rate and metal recovery as settling precipitates in bioreactors: Influence of electron donors

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.creatorCosta, Rachel Biancalana [UNESP]-
Autor(es): dc.creatorGouvea Godoi, Leandro Augusto-
Autor(es): dc.creatorMaluf Braga, Adriana Ferreira-
Autor(es): dc.creatorDelforno, Tiago Palladino-
Autor(es): dc.creatorBevilaqua, Denise [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:57:28Z-
Data de disponibilização: dc.date.available2022-02-22T00:57:28Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-02-04-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jhazmat.2020.123622-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/209732-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/209732-
Descrição: dc.descriptionFour down-flow structured bed bioreactors were operated targeting biological sulfate-reduction and metal recovery. Three different electron donors were tested: glycerol (R1), lactate (R2), sucrose (R3), and a blend of the previous three (R4) with an increasing copper influent load (5, 15, and 30 mg Cu2+.L-1). Copper inhibited sulfate-reduction in R1 (15 mg Cu2+.L-1) and R3 (5 mg Cu2+.L-1), but the fermentative activity was not affected. R2 and R4 were not inhibited by the copper influent concentration. R2 provided the highest sulfate reduction rate (1767.3 +/- 240.1 mg SO42-.L.day(-1)). Nonetheless, the accumulation of settling precipitates was 22 % higher in R4 than in R2, indicating the former yielded the highest metal recovery as settling precipitates (24.8 g FSS.L-1, 25 % Fe2+, 5% Cu2+). 16S rRNA sequencing showed highest diversity of sulfate-reducing bacteria in R2. A predominance of sulfate-reducing and fermentative bacteria with more similarity was observed between microbial populations in R1 and R4, despite the difference in toxicity thresholds. Hence, the electron donor influenced not only the biological sulfate reduction, but also metal toxicity thresholds and metal recovery as settling precipitates.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionSao Paulo State Univ, Inst Chem, Dept Biochem & Organ Chem, R Francisco Degni 55, BR-14800060 Araraquara, SP, Brazil-
Descrição: dc.descriptionUniv Sao Paulo, Sao Carlos Sch Engn EESC, Dept Hydraul & Sanitat, Biol Proc Lab, Engn Ambiental Bloco 4-F,1100 Joao Dagnone Av, BR-13563120 Sao Carlos, SP, Brazil-
Descrição: dc.descriptionUniv Fed Sao Carlos, Dept Biol, Lab Environm Microbiol, Rodovia Joao Leme Santos Km 110, BR-18052780 Sorocaba, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Inst Chem, Dept Biochem & Organ Chem, R Francisco Degni 55, BR-14800060 Araraquara, SP, Brazil-
Descrição: dc.descriptionFAPESP: FAPESP 2016/13603-3-
Descrição: dc.descriptionFAPESP: FAPESP2018/00213-8-
Formato: dc.format11-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Relação: dc.relationJournal Of Hazardous Materials-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectAcid mine drainage-
Palavras-chave: dc.subjectSulfidogenenis-
Palavras-chave: dc.subject16 rRNA sequencing-
Palavras-chave: dc.subjectCopper toxicity-
Palavras-chave: dc.subjectMetal precipitation-
Palavras-chave: dc.subjectDown-flow structured-bed reactors-
Título: dc.titleSulfate removal rate and metal recovery as settling precipitates in bioreactors: Influence of electron donors-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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