Anaerobic treatment removing tetrabromobisphenol A and biota safety: How do tropical aquatic species respond to effluent toxicity over short- and long-term exposures?

Autor(es)

Bernegossi, Aline Christine ; Castro, Gleyson Borges ; Felipe, Mayara Caroline ; de Souza, Tallyson Tavares Cunha ; Macedo, Williane Vieira ; Gorni, Guilherme Rossi ; Corbi, Juliano Jose

• Tipo de documento: Artigo Científico
• Fonte: WATER ENVIRONMENT RESEARCH; v. 96, n. 6, p. 19-pg., 2024-06-01.

Resumo

Wastewater containing tetrabromobisphenol A (TBBPA), a commonly used flame retardant found in wastewater, can present significant toxic effects on biota, yet its impact on tropical freshwater environments is not well understood. This study explores the effectiveness of two independent anaerobic treatment systems, the acidogenic reactor (AR) and the methanogenic reactor (MR), for the ecotoxicity reduction of TBBPA-rich wastewater in four tropical freshwater species. Despite presenting good physicochemical performance and reduced toxicity of the influent for most species, AR and MR treatments remain acute and chronic toxicity. Overall, MR exhibited greater efficacy in reducing influent toxicity compared with AR. TBBPA bioaccumulation was observed in Chironomus sancticaroli after short-term exposure to 100% MR effluent. Multigenerational exposures highlighted changes in the wing length of C. sancticaroli, showing decreases after influent and AR exposures and increases after MR exposures. These findings underscore the need for ecotoxicological tools in studies of new treatment technologies, combining the removal of emerging contaminants with safeguarding aquatic biota.Practitioner Points Acidogenic and methanogenic reactors reduced the acute and chronic toxicity of wastewater containing tetrabromobisphenol A. Both treatments still exhibit toxicity, inducing short- and long-term toxic effects on four native tropical species. The aquatic species Pristina longiseta was most sensitive to effluents from acidogenic and methanogenic reactors. TBBPA concentrations recovered from Chironomus sancticaroli bioaccumulation analysis ranged from 1.07 to 1.35 mu g g-1. Evaluating new treatment technologies with multiple species bioassays is essential for a comprehensive effluent toxicity assessment and ensuring aquatic safety. A methanogenic reactor treating wastewater containing tetrabromobisphenol A reduced the effluent toxicity for tropical aquatic species. Tetrabromobisphenol A can be bioaccumulated in the freshwater insect Chironomus sancticaroli. image (AU)

• 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
• Processo FAPESP: 20/11042-0 - Antibióticos em água residuária sintética e hospitalar, pré e pós reatores anaeróbios: efeitos tóxicos para invertebrados aquáticos continentais
• Beneficiário: Gleyson Borges Castro
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 18/21901-0 - Avaliação do impacto ambiental de vinhaça biodigerida em reator anaeróbio utilizando testes ecotoxicológicos
• Beneficiário: Mayara Caroline Felipe
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 18/17744-6 - Sistema combinado para a degradação do Tetrabromobisfenol a (TBBPA) por digestão anaeróbia e processos oxidativos avançados
• Beneficiário: Williane Vieira Macêdo
• Modalidade de apoio: Bolsas no Brasil - Doutorado