Ng, Kuan Aeng and Low, Kah Hin and Tay, Kheng Soo (2023) Exploring the potential of Fe(III)-EGTA and Fe(III)-DTPA as the catalysts to enhance UV/persulfate in the degradation of aqueous sulfamethazine. Water Environment Research, 95 (4). ISSN 1061-4303, DOI https://doi.org/10.1002/wer.10862.
Full text not available from this repository.Abstract
The combination of UV and water-soluble Fe(III) complexes is an effective method for generating Fe(II) in situ for activating advanced oxidation processes. This study explored the potential of Fe(III)-diethylenetriaminepentaacetic acid (Fe(III)-DTPA) and Fe(III)-ethylene glycol-bis(2-aminoethylether)-N,N,N `,N `-tetraacetic acid (Fe(III)-EGTA) in activating the UV/persulfate (UV/PS) for sulfamethazine removal. The initial screening showed that Fe(III)-EGTA and Fe(III)-DTPA could significantly improve the rate of sulfamethazine removal. The optimum molar ratios of persulfate to Fe(III)-DTPA and Fe(III)-EGTA were 100:1 and 100:2.5. The predicted percentage of sulfamethazine removal under the optimized conditions, obtained using response surface methodology, was similar to 99% for both catalysts. The pH range of 6 to 8 did not significantly affect the performance of UV/PS in the removal of sulfamethazine. The percentage sulfamethazine removal in the selected water samples was ranged from 93.6% to 99.6%, agreeing with the predicted value. The performance of both catalysts in activating UV/PS is comparable with that of the frequently used Fe(III)-EDDS. Practitioners Points The potential of Fe(III)-DTPA and Fe(III)-EGTA in activating UV/persulfate (UV/PS) was explored.Fe(III)-DTPA and Fe(III)-EGTA improved the performance of UV/PS in sulfamethazine removal.Fe(III)-DTPA and Fe(III)-EGTA are effective in catalyzing UV/PS under pH 6 to 8.The performance of Fe(III)-DTPA and Fe(III)-EGTA is comparable with well-studied Fe(III)-EDDS.
| Item Type: | Article |
|---|---|
| Funders: | Nippon Sheet Glass Foundation forMaterials Sciences and Engineering [Grant No: IF006-2020], Universiti Malay [Grant No: RK004-2020] |
| Uncontrolled Keywords: | Advanced oxidation processes; Catalyst; Design of experiments; Pharmaceuticals; Water treatment |
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences T Technology > TD Environmental technology. Sanitary engineering |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 27 Nov 2024 03:37 |
| Last Modified: | 27 Nov 2024 03:37 |
| URI: | http://eprints.um.edu.my/id/eprint/38356 |
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