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

Author(s)

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

Affiliation

^[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

• Document type: Journal article
• Source: Journal of Environmental Management; v. 263, JUN 1 2020.
• Web of Science Citations: 0

Abstract

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)

• FAPESP's process: 13/19367-1 - Degradation of anionic surfactant and removal of nitrogen and phosphate of wastewater commercial laudry in fluidized bed reactor
• Grantee: Marcus Vinícius Freire Andrade
• Support Opportunities: Scholarships in Brazil - Doctorate