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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Metabolic routes involved in the removal of linear alkylbenzene sulfonate (LAS) employing linear alcohol ethoxylated and ethanol as co-substrates in enlarged scale fluidized bed reactor

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Author(s):
Motteran, Fabricio [1] ; Nadai, Bianca Marques [1] ; Braga, Juliana Kawanishi [1] ; Silva, Edson Luiz [2] ; Amancio Varesche, Maria Bernadete [1]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Sch Engn Sao Carlos, Dept Hydraul & Sanit, Ave Trabalhador Saocarlense 400, BR-13566590 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Chem Engn, Rod Washington Luiz, Km 235, SP 310, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Science of The Total Environment; v. 640, p. 1411-1423, NOV 1 2018.
Web of Science Citations: 3
Abstract

In this study, the microbial community characterization and metabolic pathway identification involved in the linear alkylbenzene sulfonated (LAS) degradation from commercial laundry wastewater in a fluidized bed reactor (FBR) on an increased scale were performed using the Illumina MiSeq platform. Ethanol and non-ionic surfactant (LAE, Genapol C-100) were used as co-substrates. The FBR was operated in five operational phases: (I) synthetic substrate for inoculation; (II) 7.9 +/- 4.7 mg/L LAS and 11.7 +/- 6.9 mg/L LAE; (III) 19.4 +/- 12.9 mg/L LAS, 19.6 +/- 9.2 mg/L LAE and 205 mg/L ethanol; (IV) 25.9 +/- 11 mg/L LAS, 19.5 +/- 9.1 mg/L LAE and 205 mg/L ethanol and (V) 43.9 +/- 18 mg/L LAS, 25 +/- 9.8 mg/L LAE and 205 mg/L ethanol. At all operation phases, organic matter was removed from 40.4 to 85.1% and LAS removal was from 24.7 to 56%. Sulfate-reducing bacteria (SRB) were identified in the biofilm of FBR in all operational phases. Although the LAS promoted a toxic effect on the microbiota, this effect can be reduced when using biodegradable co-substrates, such as ethanol and LAE, which was observed in Phase IV. In this phase, there was a greater microbial diversity (Shannon index) and higher microorganism richness (Chao 1 index), both for the Domain Bacteria, and for the Domain Archaea. (c) 2018 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 13/19025-3 - INCREASING SCALE OF ANAEROBIC FLUIDIZED BED REACTOR FOR REMOVAL OF ANIONIC AND NONIONIC SURFACTANTS IN COMMERCIAL LAUNDRY WASTEWATER
Grantee:Fabricio Motteran
Support type: Scholarships in Brazil - Post-Doctorate