4-Nonylphenol degradation changes microbial community of scale-up Anaerobic Fluidized Bed Reactor

Autor(es)

Dornelles, Henrique de Souza ^[1] ; Motteran, Fabricio ^[2] ; Sakamoto, Isabel Kimiko ^[1] ; Silva, Edson Luiz ^[3] ; Amancio Varesche, Maria Bernadete ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sch Engn EESC, Dept Hydraul & Sanit, Bloco 4-F, Av Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil

^[2] Univ Fed Pernambuco, Dept Civil & Environm Engn, Av Prof Moraes Rego, 1235 Cidade Univ, BR-50670901 Recife, PE - Brazil

^[3] Univ Fed Sao Carlos, Dept Chem Engn, Rod Washington Luiz, Km 235, SP 310, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Environmental Management; v. 267, AUG 1 2020.
• Citações Web of Science: 2

Resumo

Nonylphenol Ethoxylate (NPe) is a nonionic surfactant widely applied in domestic and industrial uses and its degradation generates the endocrine disruptor 4-Nonylphenol (4-NP). The effects of this compound in biological sewage treatment are uncertain, especially in anaerobic systems. The aim of this study was to assess the 4-NP removal and degradation in scale-up (20 L) Anaerobic Fluidized Bed Reactor (AFBR) filled with sand as support material, operated with Hydraulic Retention Time (HRT) of 18 h, fed with synthetic sewage plus 4-NP, performed in four phases named Phase I (894 mg COD L-1), Phase II (878 mg COD L-1, 127 mu g 4-NP L-1), Phase III (940 mg COD L-1, 270 mu g 4-NP L-1) and Phase IV (568 mg COD L-1, 376 mu g 4-NP L-1). 4-NP did not affect reactor stability and organic matter removal remained stable at 94%. Highest 4-NP removal (78%) occurred for highest 4-NP influent (Phase IV), which resulted from biomass adaptation in the presence of ethanol. Through the 4-NP total mass balance, about 70% was biodegraded and 1% adsorbed on the sand bed. 4-NP addition promoted selection of microbial consortium strongly linked to aromatic compounds and surfactants degradation such as Geothrix, Holophaga, Aeromonas, Pelobacter, Pseudomonas, Delftia. (AU)

• Processo FAPESP: 17/22850-7 - Caracterização microbiana da remoção e degradação de 4-nonilfenol em reator anaeróbio de leito fluidificado em escala aumentada
• Beneficiário: Henrique de Souza Dornelles
• Modalidade de apoio: Bolsas no Brasil - Mestrado