Tetracycline Removal by Activating Persulfate with Diatomite Loading of Fe and Ce |
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| Authors: | Chongning Lv Jindou Shi Qiuju Tang Qi Hu |
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| Institution: | 1.School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China;2.School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China; (J.S.); (Q.T.) |
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| Abstract: | Persulfate (PS)-based oxidation technology is efficient in removing refractory organics from water. A novel diatomite (DIA) support Fe and Ce composite (Fe-Ce/DIA) was prepared for activating persulfate to degrade tetracycline in water. The Fe and Ce were uniformly loaded on DIA, and the total pore size of Fe-Ce/DIA was 6.99 × 10−2 cm3/g, and the average pore size was 12.06 nm. Fe-Ce/DIA presented a good catalytic activity and 80% tetracycline was removed under the persulfate system. The Fe-Ce/DIA also had photocatalytic activity, and the corresponding tetracycline removal efficiency was 86% under UV irradiation. Fe-Ce/DIA exhibited less iron dissolution rate compared with Fe-DIA. The tetracycline degradation rate was enhanced when the temperature increased. The optimal tetracycline removal efficiency was obtained when the conditions were of persulfate 10 mM, Fe-Ce/DIA dosage 0.02 g/L, and tetracycline concentration 50 mg/L. In addition, Fe-Ce/DIA showed a wide pH application and good reusability and stability. |
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| Keywords: | tetracycline persulfate advance oxidation diatomite wastewater |
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