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| Study on Sulfadiazine Degradation by Peroxymonosulfate Activated with Biochar-Supported CuFe2O4 |
| WANG jian-hui1 XING sheng-lin2 NI zi-yang3 DONG xiao-xuan4
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| College of Municipal and Environmental Engineering, Jilin Jianzhu University, Changchun 130018, China |
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Abstract Utilizing agricultural waste, peanut shells, the CuFe2O4@BC-HS material was synthesized through a citric acid complexation method. This material effectively activates potassium monopersulfate (PMS), leading to the proficient degradation of sulfanilamide (SD). The study evaluated various factors influencing the degradation efficacy, including the dosage of CuFe2O4@BC-HS, PMS concentration, solution pH, initial SD concentration, and the presence of coexisting ions. The results indicate that at an initial SD concentration of 10 mg/L, a solution pH of 7, a CuFe2O4@BC-HS dosage of 0.1 g/L, and a PMS concentration of 0.225 mmol/L, the degradation rate of SD reached 93% within 90 minutes. Low concentrations of HCO3- enhance the degradation of sulfanilamide, while high concentrations exhibit inhibitory effects. High concentrations of Cl- slightly inhibit the degradation, whereas SO42- does not significantly affect the degradation process. Radical quenching experiments confirmed that 1O2, O2?-, and SO4?- are the principal reactive radicals responsible for the degradation of SD.
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Published: 20 December 2025
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