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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.)

Modeling anaerobic digestion metabolic pathways for antibiotic-contaminated wastewater treatment

Full text
Author(s):
Fonseca, Rafael Frederico [1] ; de Oliveira, Guilherme Henrique Duarte [1] ; Zaiat, Marcelo [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Sao Carlos Sch Engn EESC, Ctr Res Dev & Innovat Environm Engn, Biol Proc Lab, Engn Ambiental Bloco 4-F, Ave Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: BIODEGRADATION; v. 31, n. 4-6, p. 341-368, DEC 2020.
Web of Science Citations: 0
Abstract

Anaerobic digestion has been used to treat antibiotic-contaminated wastewaters. However, it is not always effective, since biodegradation is the main removal mechanism and depends on the compound chemical characteristics and on how microbial metabolic pathways are affected by the reactor operational conditions and hydrodynamic characteristics. The aim of this study was to develop a mathematical model to describe 16 metabolic pathways of an anaerobic process treating sulfamethazine-contaminated wastewater. Contois kinetics and a useful reaction volume term were used to represent the biomass concentration impact on bed porosity in a N continuously stirred tank modeling approach. Two sulfamethazine removal hypotheses were evaluated: an apparent enzymatic reaction and a cometabolic degradation. Additionally, long-term modeling was developed to describe how the operational conditions affected the performance of the process. The best degradation correlations were associated with the consumption of carbohydrates, proteins and it was inversely related to acetic acid production during acidogenesis. (AU)

FAPESP's process: 12/18942-0 - Sulfamethazine removal in anaerobic reactors treating swine wastewater
Grantee:Guilherme Henrique Duarte de Oliveira
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 16/15003-3 - Modelling and optimization of anaerobic processes for treating wastewater containing sulfamethazine
Grantee:Rafael Frederico Fonseca
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 15/06246-7 - Biorefinery concept applied to biological wastewater treatment plants: environmental pollution control coupled with material and energy recovery
Grantee:Marcelo Zaiat
Support Opportunities: Research Projects - Thematic Grants