Evaluation of bacterial community from anaerobic fluidized bed reactor for the removal of linear alkylbenzene sulfonate from laundry wastewater by 454-pyrosequence

Autor(es)

Braga, Juliana Kawanishi ^[1] ; Motteran, Fabircio ^[1] ; Silva, Edson Luiz ^[2] ; Amancio Varesche, Maria Bernadete ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sch Engn Sao Carlos, Dept Hydraul & Sanitat, BR-13566590 Sao Paulo - Brazil

^[2] Univ Fed Sao Carlos, Dept Chem Engn, BR-13565905 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ECOLOGICAL ENGINEERING; v. 82, p. 231-240, SEP 2015.
• Citações Web of Science: 12

Resumo

In this study, 454-pyrosequencing technique was employed to investigate the bacterial communities from a fluidized bed reactor (FBR) with sand as support material. This reactor was used for linear alkylbenzene sulfonate (LAS) removal from laundry wastewater. The FBR was inoculated with sludge from a UASB (upflow anaerobic sludge blanket) reactor used in the treatment of swine manure and was operated in two stages: I (23.6 +/- 10 mg/L of LAS and 691 +/- 103 mg/L of COD) and II (28 +/- 10 mg/L of LAS and 666 +/- 161 mg/L and COD), for hydraulic retention times (HRT) of 18 and 23 h, respectively. The biomass from the support material (S) and phase separator (PS) were analysed in both stages, with sucrose (S-I and PS-I) and without sucrose (S-II and PS-II) as co-substrate. Proteobacteria followed by Bacteroidetes was found to be the dominant phylum (higher relative abundance) in the samples from Stage I, and Proteobacteria and Gemmatimonadetes predominated in the samples from Stage II. The sucrose removal of synthetic substrate changed the microbial community since the similarity between that of Stages I and II was low. In the FBR biomass 22 genera related to LAS degradation were identified. The differences found between the samples indicated that it is likely that the treatment process had effects on the microbial structure. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 10/11531-9 - Avaliação do tratamento de água de lavanderia comercial em reator anaeróbio de leito fluidizado
• Beneficiário: Juliana Kawanishi Braga
• Modalidade de apoio: Bolsas no Brasil - Doutorado