Sunlight powered degradation of pentoxifylline Cs0.5Li0.5FeO2 as a green reusable photocatalyst: Mechanism, kinetics and toxicity studies
| Autor: | Alpa Yadav, Son D. N. Luu, Gallegos-Cerda Susana Dianey, Prabal P. Singh, Jayanthi Narayanan, Deepak Kumar, Harmanjit Singh Dosanjh, Harpeet Kaur, Jashanpreet Singh, Huerta-Aguilar Carlos Alberto, Ajit Sharma |
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| Rok vydání: | 2021 |
| Předmět: |
Pollutant
021110 strategic defence & security studies Environmental Engineering Ferromagnetic material properties Chemistry Health Toxicology and Mutagenesis Kinetics 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences 01 natural sciences Pollution Catalysis Reaction rate Toxicity Photocatalysis Environmental Chemistry Degradation (geology) Waste Management and Disposal 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | Journal of Hazardous Materials. 416:125762 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2021.125762 |
| Popis: | The degradation of Pentoxifylline (PXF) was achieved successfully by green energy in a built-in solar photocatalytic system using hybrid LiCs ferrites (Li0.5Cs0.5FeO2) as magnetically recoverable photocatalysts. Kinetics showed a first-order reaction rate with maximum PXF removal of 94.91% at mildly acidic pH; additionally, the ferromagnetic properties of catalyst allowed recovery and reuse multiple times, reducing costs and time in degradation processes. The degradation products were identified by HPLC-MS and allowed us to propose a thermodynamically feasible mechanism that was validated through DFT calculations. Additionally, toxicity studies have been performed in bacteria and yeast where high loadings of Cs showed to be harmful to Staphylococcus aureus (MIC≥ 4.0 mg/mL); Salmonella typhi (MIC≥ 8.0 mg/mL) and Candida albicans (MIC≥ 10.0 mg/mL). The presented setup shows effectiveness and robustness in a degradation process using alternative energy sources for the elimination of non-biodegradable pollutants. |
| Databáze: | OpenAIRE |
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