| Autor: |
Jibran Iqbal, Noor S. Shah, Javed Ali Khan, Mohamed A. Habila, Grzegorz Boczkaj, Asam Shad, Yousef Nazzal, Ahmed A. Al-Taani, Fares Howari |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Water Resources and Industry, Vol 30, Iss , Pp 100226- (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2212-3717 |
| DOI: |
10.1016/j.wri.2023.100226 |
| Popis: |
Clofibric acid (CFA), an important blood-lipid regulatory drug is an emerging organic pollutant and widely reported in water resources. A novel bimetallic, bismuth/zero valent cupper (Bi/Cu0) catalyst was prepared which showed better physiological, structural, and catalytic properties than Cu0. The Bi/Cu0 effectively catalyzed persulfate (S2O82−) and caused 85% degradation of CFA. The Bi coupling improved reusability and stability of Cu0. The use of alcoholic and anionic radical scavengers and analyzing change in [S2O82−]0 proved that Bi/Cu0/S2O82− yield hydroxyl radicals (●OH) and sulfate radicals (SO4●–). The ●OH and SO4●– showed faster reaction with CFA, i.e., 4.65 × 109 and 3.82 × 109 M−1 s−1 and degraded CFA into four degradation products. Under optimal conditions of [Bi/Cu0]0 = 1.0 g/L and [S2O82−]0 = 40 mg/L, 99.5% degradation of the 10 mg/L of CFA was achieved at 65 min. Temperature showed promising effects on the removal of CFA by Bi/Cu0/S2O82− and caused 98% removal at 323 K than 75% at 298 K at 32 min. The temperature effects were used to calculate activation energy, enthalpy, and rate constant of CFA degradation. The Bi/Cu0/S2O82− showed effective removal of CFA in real water samples also. The ecotoxicity study confirmed non-toxic product formation which suggests high capability of the proposed technology in the treatment of CFA. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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