Degradation of anionic surfactant and removal of nitrogen and phosphate of wastewater commercial laudry in fluidized bed reactor

• Grant number: 13/19367-1
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date until: December 01, 2013
• End date until: August 31, 2016
• Field of knowledge: Engineering - Sanitary Engineering - Environmental Sanitation
• Principal Investigator: Maria Bernadete Amâncio Varesche
• Grantee: Marcus Vinícius Freire Andrade
• Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated research grant: 09/15984-0 - Bioenergy production from wastewaters and environmental fitting of liquid and solid wastes generated, AP.TEM

Abstract

The widespread use of surfactants in various products justifies the current research directions aimed at the remediation of environmental problems related to them. Among the branches that use surfactants, commercial laundries represent the sector that uses and requires high concentration of surfactants in their products, usually linear alkyl benzene sulfonate, LAS, commonly found in the constitution of cleaning products. In Brazil, recent research has been conducted in LPB-EESC-USP with anaerobic fluidized bed aiming anaerobic removal of LAS. Thus, the motivation of this work is the possibility to evaluate the degradation of surfactant in the water from commercial laundry in optional conditions, with emphasis on evaluation of the removal of nitrogen and phosphate in a fluidized bed reactor filled with sand. Microscopic examination will be performed to evaluate microbial growth due to reactor operation, besides the application of PCR / DGGE to establish the microbial diversity in relation to the Domain Bacteria. The reactor will be operated in continuous flow and bench scale, and will be applied different hydraulic retention times to promote the removal of the aforementioned compounds. In the best removal stage of the compounds, biofilm will be sampled for cell identification by sequencing of 16S rRNA gene fragments. Aliquots of the effluent will be taken for evaluation in mass spectrometry in order to check the co-degradation products. It is important research, since the possibility of observation of removal and degradation has not yet been carried out both on LPB and Brazil. Thus, we intend to seek appropriate condition after setting the best HRT for removal of organic compounds, nitrogen and phosphates in a fluidized bed reactor.

Scientific publications

(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)

FREIRE ANDRADE, MARCUS VINICIUS; SAKAMOTO, ISABEL KIMIKO; CORBI, JULIANO JOSE; SILVA, EDSON LUIZ; AMANCIO VARESCHE, MARIA BERNADETE. Effects of hydraulic retention time, co-substrate and nitrogen source on laundry wastewater anionic surfactant degradation in fluidized bed reactors. Bioresource Technology, v. 224, p. 246-254, JAN 2017. (13/19367-1)

FREIRE ANDRADE, MARCUS VINICIUS; DELFORNO, TIAGO PALLADINO; SAKAMOTO, ISABEL KIMIKO; SILVA, EDSON LUIZ; AMANCIO VARESCHE, MARIA BERNADETE. Dynamics and response of microbial diversity to nutritional conditions in denitrifying bioreactor for linear alkylbenzene sulfonate removal. Journal of Environmental Management, v. 263, JUN 1 2020. (13/19367-1)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

ANDRADE, Marcus Vinícius Freire. Influence of hydraulic retention time and nutricional conditions in anionic surfactant from laundry wastewater and theirs effects in microbial community. 2016. Doctoral Thesis - Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) São Carlos.