Dynamics and response of microbial diversity to nutritional conditions in denitrifying bioreactor for linear alkylbenzene sulfonate removal

Autor(es)

Freire Andrade, Marcus Vinicius ^[1] ; Delforno, Tiago Palladino ^[2] ; Sakamoto, Isabel Kimiko ^[3] ; Silva, Edson Luiz ^[4] ; Amancio Varesche, Maria Bernadete ^[3]

Afiliação do(s) autor(es)

^[1] IFCE, Fed Inst Educ Sci & Technol Ceara, Campus Sobral, Sobral 62042030, CE - Brazil

^[2] Campinas Univ, Res Ctr Chem Biol & Agr CPQBA, Microbial Resources Div, UNICAMP, Campinas 13081970, SP - Brazil

^[3] Univ Sao Paulo, Sch Engn Sao Carlos, Dept Hydraul & Sanitat, Sao Carlos 13566590, SP - Brazil

^[4] Univ Fed Sao Carlos, Dept Chem Engn, Rod Washington Luiz, Km 235, Sao Carlos 13565905, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Environmental Management; v. 263, JUN 1 2020.
• Citações Web of Science: 0

Resumo

The aim of this study was to evaluate the microbial structure and phylogenetic diversity under the influence of nutritional conditions and hydraulic retention time (HRT) in fluidized bed reactors (FBR), operated in short HRT (8 h - FBR8; 12 h - FBR12) for linear alkylbenzene sulfonate (LAS) removal from laundry wastewater. After each phase, biofilm samples from FBR8 and FBR12 were submitted to microbial sequencing by Mi-Seq Illumina (R) Higher LAS removal rates were observed after 313 days, achieving 99 +/- 3% in FBR12 (22.5 +/- 5.9 mg LAS/L affluent) and 93 +/- 12% in FBR8 (20.6 +/- 4.4 mg LAS/L affluent). Different modifications involving genera of bacteria were observed throughout the reactors operation. The identified microorganisms were, mostly, related to LAS degradation and nitrogen conversion such as Dechloromonas, Flavobacterium, Pseudomonas, and Zoogloea. (AU)

• Processo FAPESP: 13/19367-1 - Degradação de surfactante aniônico e remoção de nitrogênio e fosfato de água residuária de lavanderia comercial em reator de leito fluidificado
• Beneficiário: Marcus Vinícius Freire Andrade
• Modalidade de apoio: Bolsas no Brasil - Doutorado