A membrane aerated biofilm reactor for sulfide control from anaerobically treated wastewater

Autor(es)

Camiloti, Priscila Rosseto ^[1] ; Valdes, Freddy ^[2] ; Delforno, Tiago Palladino ^[3] ; Bartacek, Jan ^[4] ; Zaiat, Marcelo ^[1] ; Jeison, David ^[5]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Biol Proc Lab, Ctr Res Dev & Innovat Environm Engn, Sao Carlos Sch Engn EESC, Sao Carlos, SP - Brazil

^[2] Univ La Frontera, Nat Resources Dept, Temuco - Chile

^[3] Campinas Univ UNICAMP, Microbial Resources Div, Res Ctr Chem Biol & Agr CPQBA, CP 6171, BR-13081970 Campinas, SP - Brazil

^[4] Inst Chem Technol, Dept Water Technol & Environm Engn, Prague - Czech Republic

^[5] Pontificia Univ Catolica Valparaiso, Escuela Ingn Bioquim, Valparaiso - Chile

• Tipo de documento: Artigo Científico
• Fonte: ENVIRONMENTAL TECHNOLOGY; v. 40, n. 18, p. 2354-2363, AUG 11 2019.
• Citações Web of Science: 3

Resumo

A upflow anaerobic sludge blanket reactor was operated combined to a membrane aerated biofilm reactor for sulfate removal and for elemental sulfur reclamation. A commercial silicon tube was used as an oxygen delivery diffuser. The process achieved high rates of sulfide removal from the liquid phase (90%). The hydrogen sulfide removal was influenced by the pH value and at pH value of 7.5, 98% of the H2S was removed. The elemental sulfur was observed inside the membrane, with content in the biomass of 21%. Through the massive sequencing of the samples, the microbial community diversity and the stratification of biomass inside the silicon tube was demonstrated, confirming the presence of sulfide-oxidizing bacteria on the membrane wall. The most important genera found related to the sulfur cycle were Sulfuricurvum, Geovibrio, Flexispira and Sulforospirillum. (AU)

• Processo FAPESP: 09/15984-0 - Produção de bioenergia no tratamento de águas residuárias e adequação ambiental dos efluentes e resíduos gerados
• Beneficiário: Marcelo Zaiat
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 13/13131-6 - Redução de sulfato e oxidação de sulfeto em reator UASB combinado a um reator microaerado
• Beneficiário: Priscila Rosseto Camiloti
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 11/22904-3 - Recuperação de enxofre elementar a partir de águas residuárias em reator combinado anaeróbio-micro aerado
• Beneficiário: Priscila Rosseto Camiloti
• Modalidade de apoio: Bolsas no Brasil - Doutorado