Souza Fernanda Siqueira, da Silva Vanessa Vargas, Rosin Catiusa Kuchak, Hainzenreder Luana, Arenzon Alexandre, Féris Liliana Amaral
a Chemical Engineering Department , Federal University of Rio Grande do Sul , Porto Alegre , Rio Grande do Sul , Brazil.
b Ecology Centre , Federal University of Rio Grande do Sul , Porto Alegre , Rio Grande do Sul , Brazil.
Environ Technol. 2018 Mar;39(5):549-557. doi: 10.1080/09593330.2017.1306116. Epub 2017 Mar 30.
Amoxicillin (AMX) is a widely used penicillin-type antibiotic whose presence in the environment has been investigated. In this work, the degradation of the AMX in aqueous solutions by ozonation, ozonation with UV radiation (O/UV), homogeneous catalytic ozonation (O/Fe) and homogeneous photocatalytic ozonation (O/Fe/UV) was investigated. The performance results have been compared in terms of removal of amoxicillin and total organic carbon (mineralization efficiency). In all processes, complete amoxicillin degradation was obtained after 5 min. However, low mineralization was achieved. For the best available process, the potential toxicity of AMX intermediates formed after ozonation was examined using a Fish Embryo Toxicity test. Results reveal that O in alkaline solution and O/Fe/UV provide the highest mineralization rates. Ecotoxicity showed that no acute toxicity was observed during the exposure period of 96 h.
阿莫西林（AMX）是一种广泛使用的青霉素类抗生素，其在环境中的存在已受到研究。在这项工作中，研究了通过臭氧化、紫外辐射臭氧化（O/UV）、均相催化臭氧化（O/Fe）和均相光催化臭氧化（O/Fe/UV）对水溶液中阿莫西林的降解情况。已根据阿莫西林的去除率和总有机碳（矿化效率）对性能结果进行了比较。在所有过程中，5分钟后阿莫西林均实现了完全降解。然而，矿化程度较低。对于最佳可用工艺，使用鱼类胚胎毒性试验检测了臭氧化后形成的阿莫西林中间体的潜在毒性。结果表明，碱性溶液中的O和O/Fe/UV具有最高的矿化速率。生态毒性表明，在96小时的暴露期内未观察到急性毒性。
