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- Title
Photo-thermal activation of persulfate for the efficient degradation of synthetic and real industrial wastewaters: System optimization and cost estimation.
- Authors
El-monem, Hany Abd; Mahanna, Hani; El-Halwany, Mohamed; Samy, Mahmoud
- Abstract
The photo-thermal activation of persulfate (PS) was carried out to degrade various pollutants such as reactive blue-222 (RB-222) dye, sulfamethazine, and atrazine. Optimizing the operating parameters showed that using 0.90 g/L of PS at pH 7, temperature of 90 °C, initial dye concentration of 21.60 mg/L, and reaction time of 120 min could attain a removal efficiency of 99.30%. The degradation mechanism was explored indicating that hydroxyl and sulfate radicals were the prevailing reactive species. The degradation percentages of 10 mg/L of sulfamethazine and atrazine were 83.30% and 70.60%, respectively, whereas the mineralization ratio was 63.50% in the case of real textile wastewater under the optimal conditions at a reaction time of 120 min. The treatment cost per 1 m3 of real wastewater was appraised to be 1.13 $/m3 which assured the inexpensiveness of the proposed treatment system. This study presents an effective and low-cost treatment system that can be implemented on an industrial scale.
- Subjects
INDUSTRIALISM; MATHEMATICAL optimization; COLOR removal (Sewage purification); HYDROXYL group; POLLUTANTS; ATRAZINE
- Publication
Environmental Science & Pollution Research, 2024, Vol 31, Issue 16, p24153
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-024-32728-w