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Grant number: 10/18885-0
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): August 01, 2011
Effective date (End): November 30, 2013
Field of knowledge:Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
Principal Investigator:Maria Bernadete Amâncio Varesche
Grantee:Fabricio Motteran
Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil


The degradation of LAE (linear alcohol ethoxylate) for aerobic treatment systems has been extensively studied. However, this removal of LAE is due probably to the phenomena of degradation and sorption on biological sludge. Only a few studies on the degradation of LAE in anaerobic conditions. In Brazil, recent research has been conducted in the LPB-EESC-USP with horizontal anaerobic fixed bed and fluidized bed reactor fed with synthetic wastewater and LAS (linear alkylbenzene sulfonate). Thus, the motivation of this work lies in the possibility to evaluate the removal and degradation of LAE, through the application of current technology and efficient. In this paper, we studied the anaerobic degradation of LAE in anaerobic fluidized bed reactor in a bench scale (1.2 L) filled with sand as support material and operated continuously. The reactor is inoculated with sludge from a UASB reactor used in the treatment of effluent and swine manure is fed with synthetic substrate plus LAE. Microscopic examination will be conducted to assess the microbial growth support medium. Physic-chemical and chromatographic routine monitoring will be carried out in reactor. Changes in the concentration of LAE present in synthetic wastewater define the stages of reactor operation. Phases of stabilization, at the end of each stage of reactor operation, samples of the biofilm will be to identify cell using sequences of rRNA 16S. Through this experiment we intend, at the end of the work, indicate the alternative anaerobic technology for the removal of LAE, and especially to identify populations of the biofilm.

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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MOTTERAN, FABRICIO; BRAGA, JULIANA KAWANISHI; SAKAMOTO, ISABEL KIMIKO; AMANCIO VARESCHE, MARIA BERNADETE. Methanogenic potential of an anaerobic sludge in the presence of anionic and nonionic surfactants. INTERNATIONAL BIODETERIORATION & BIODEGRADATION, v. 96, p. 198-204, . (10/11531-9, 10/18885-0)
MOTTERAN, FABRICIO; OKADA, DAGOBERTO YUKIO; DELFORNO, TIAGO PALLADINO; VARESCHE, MARIA BERNADETE AMANCIO. Influence of cosubstrates for linear anionic sulfonated alkylbenzene degradation and methane production in anaerobic batch reactors. PROCESS SAFETY AND ENVIRONMENTAL PROTECTION, v. 139, p. 60-68, . (10/18885-0)
MOTTERAN, FABRICIO; BRAGA, JULIANA KAWANISHI; SILVA, EDSON LUIZ; AMANCIO VARESCHE, MARIA BERNADETE. Influence of Sucrose on the Diversity of Bacteria Involved in Nonionic Surfactant Degradation in Fluidized Bed Reactor. WATER AIR AND SOIL POLLUTION, v. 228, n. 1, . (10/18885-0)
MOTTERAN, FABRICIO; BRAGA, JULIANA KAWANISHI; SAKAMOTO, ISABEL KIMIKO; SILVA, EDSON LUIZ; AMANCIO VARESCHE, MARIA BERNADETE. Degradation of high concentrations of nonionic surfactant (linear alcohol ethoxylate) in an anaerobic fluidized bed reactor. Science of The Total Environment, v. 481, p. 121-128, . (10/18885-0)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
MOTTERAN, Fabricio. Microbial characterization of anaerobic fluidized bed reactor involved in the nonionic surfactant alcohol ethoxylate non-branched (GENAPOL) degradation. 2013. Doctoral Thesis - Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) São Carlos.

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