| Texto completo | |
| Autor(es): |
de Lima Perini, Joao Angelo
;
Pupo Nogueira, Raquel Fernandes
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY; v. 92, n. 9, p. 2300-2308, SEP 2017. |
| Citações Web of Science: | 2 |
| Resumo | |
BACKGROUND: Ciprofloxacin (CIP) is an antibiotic largely used to treat bacterial infections and found in sewage treatment plant (STP) effluent. Zero valent iron (ZVI, Fe2+) technology has great potential for the degradation of residual pharmaceuticals. The effect of some parameters (anaerobic/aerobic, particle size, iron ligands and anions) were evaluated for CIP degradation in distilled water (DW) and finally compared to that obtained in STP effluent. RESULTS: The smaller ZVI particle (200 mesh) resulted in a lower degradation rate than the larger particle (20 mesh) in both anaerobic and aerobic treatment. This is due mainly to the fast generation of Fe2+, hindering the degradation process due to (OH)-O-center dot scavenging. A linear increase of CIP degradation ratewas observed when the reactionwas carried out with increasing EDTA concentrations. The Cl- anions had a positive effect on CIP degradation in the ZVI process. On the other hand, the presence of NO3- resulted in a decrease of degradation rate, both with 20 and 200 mesh particles. CIP could be degraded in two STP effluents mediated by ZVI (20 mesh). CONCLUSIONS: The ZVI process can be used efficiently for the degradation of CIP in two types of STP effluent (anaerobic treatment or anaerobic/aerobic treatment), revealing a possible applicability of the ZVI process to this type of matrix. (C) 2017 Society of Chemical Industry (AU) | |
| Processo FAPESP: | 15/21732-5 - Degradação de contaminantes emergentes por processo Fenton heterogêneo mediado por magnetitas modificadas e resíduos de mineração de ferro |
| Beneficiário: | Raquel Fernandes Pupo Nogueira |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |