| Texto completo | |
| Autor(es): |
Martins, Giovana Silva
;
Rodrigues, Thais
;
Lamarca, Rafaela Silva
;
Ayala-Duran, Saidy Cristina
;
da Silva, Bianca Ferreira
;
Gomes, Paulo Clairmont Feitosa de Lima
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Environmental Science and Pollution Research; v. N/A, p. 13-pg., 2023-09-23. |
| Resumo | |
Anaerobic bioreactors are an efficient technology for the biodegradation of emerging contaminants in environmental matrices. In this work, a horizontal-flow anaerobic immobilized biomass (HAIB) bioreactor was used to remove caffeine (CAF), which is frequently found in various aqueous matrices. The acrylic bench top bioreactor, with dimensions of 100 x 5.00 cm, was operated with a hydraulic retention time (HRT) of 12 h, during 45 weeks, under mesophilic conditions. The operation was performed in 4 phases: without CAF addition (phase I); CAF spiked at 300 mu g L-1 (phase II); CAF at 600 mu g L-1 (phase III); and CAF at 900 mu g L-1 (phase IV). Samples of bioreactor influent and effluent were analyzed by liquid chromatography/tandem mass spectrometry (LC-MS/MS). The bioreactor removed organic matter (OM) and CAF with efficiencies of 88 and 93%, respectively. The first-order apparent removal constant (Kapp) values for OM and CAF were 0.419 and 0.304 h-1, respectively. Five transformation products (TPs) were identified, with m/z 243, 227, 211, and 181 (two products). The HAIB bioreactor is a suitable system for the removal of CAF present in wastewater, even at a concentration level of mu g L-1. (AU) | |
| Processo FAPESP: | 22/02991-3 - Novas estratégias analíticas para determinação de compostos químicos emergentes em amostras ambientais, alimentos e de fluídos biológicos |
| Beneficiário: | Paulo Clairmont Feitosa de Lima Gomes |
| Modalidade de apoio: | Auxílio à Pesquisa - Projeto Inicial |
| Processo FAPESP: | 14/50945-4 - INCT 2014: Instituto Nacional de Tecnologias Alternativas para Detecção, Avaliação Toxicológica e Remoção de Micropoluentes e Radioativos |
| Beneficiário: | Maria Valnice Boldrin |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 18/22393-8 - Biocarvão aplicado na remoção de contaminantes emergentes presentes em águas residuárias |
| Beneficiário: | Paulo Clairmont Feitosa de Lima Gomes |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |