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Exploring the potential of Fe(III)‐EGTA and Fe(III)‐DTPA as the catalysts to enhance UV/persulfate in the degradation of aqueous sulfamethazine
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 ~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. 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.
Exploring the potential of Fe(III)‐EGTA and Fe(III)‐DTPA as the catalysts to enhance UV/persulfate in the degradation of aqueous sulfamethazine
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 ~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. 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.
Exploring the potential of Fe(III)‐EGTA and Fe(III)‐DTPA as the catalysts to enhance UV/persulfate in the degradation of aqueous sulfamethazine
Ng, Kuan Aeng (author) / Low, Kah Hin (author) / Tay, Kheng Soo (author)
2023-04-01
10 pages
Article (Journal)
Electronic Resource
English
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