Modeling anaerobic digestion metabolic pathways for antibiotic-contaminated wastewater treatment

Autor(es)

Fonseca, Rafael Frederico ^[1] ; de Oliveira, Guilherme Henrique Duarte ^[1] ; Zaiat, Marcelo ^[1]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: BIODEGRADATION; v. 31, n. 4-6, p. 341-368, DEC 2020.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 12/18942-0 - Remoção de sulfametazina em reatores anaeróbios tratando água residuária de suinocultura
• Beneficiário: Guilherme Henrique Duarte de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 16/15003-3 - Modelagem e otimização de processos anaeróbios para remoção do antibiótico sulfametazina de águas residuárias
• Beneficiário: Rafael Frederico Fonseca
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 15/06246-7 - Aplicação do conceito de biorrefinaria a estações de tratamento biológico de águas residuárias: o controle da poluição ambiental aliado à recuperação de matéria e energia
• Beneficiário: Marcelo Zaiat
• Modalidade de apoio: Auxílio à Pesquisa - Temático