GC-HRMS analysis to evaluate the effectiveness of ozone disinfection in the removal of micropollutants from wastewater
| العنوان: | GC-HRMS analysis to evaluate the effectiveness of ozone disinfection in the removal of micropollutants from wastewater |
|---|---|
| المؤلفون: | Raíssa Olivia Barbacena, Joyce Cristale, Carlos Barata, Silvia Lacorte, Renato F. Dantas |
| بيانات النشر: | American Chemical Society, 2023. |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Environmental Engineering, Micropollutants, Wastewater, Water Science and Technology, Ozone disinfection |
| الوصف: | The objective of this study was to apply targeted and untargeted screening analyses to perform a deep assessment of micropollutant removal during wastewater disinfection by ozonation. To perform this study, effluents from two wastewater treatment plants (WWTPs) were treated with ozone at different doses and analyzed using gas chromatography coupled with Orbitrap High-Resolution Mass Spectrometry. The removal of different chemical families was assessed in relation to the level of Escherichia coli and the total removal of coliforms. The micropollutant removal rates at the typical ozone dose for disinfection (7.6 mg O3 per L) followed the order alkylphenols > pharmaceuticals and personal care products > organophosphorus flame retardants > phthalates > biomolecules. Micropollutant removal during ozone disinfection depended on their initial concentration and the physiochemical characteristics of the secondary effluent. Although bacterial inactivation in mixed gray water (GW) was observed at a dose of 15.2 mg O3 per L, most contaminants were recalcitrant to degradation by ozone and were present in the treated effluent at concentrations ranging from 10 to 1450 ng L−1; however, these effluents were not toxic to Daphnia magna. The methodology proposed in this study is intended to provide a new protocol for the careful evaluation of ozonized WWTP effluents for disposal and reuse. The authors gratefully acknowledge the financial support of CSIC-IDAEA [COOPB20361] and the Ministry of Science and Innovation of Spain [PID2019-105732GB-C21]. The Coordenação de Aperfeiçoamento de Pessoal de Nível Superior CAPES [001] and the Sao Paulo Research Foundation FAPESP [2022/00454-0, 2020/10918-9] are also acknowledged. The authors also thank Dr. Miguel Velázquez-Gomez for supplying the standard mix and assistance in GC-Orbitrap MS. |
| اللغة: | English |
| تدمد: | 2019-1057 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24daf40e6eaa6f757fae8a7bb1d40cb4 http://hdl.handle.net/10261/295809 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....24daf40e6eaa6f757fae8a7bb1d40cb4 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20191057 |
|---|