Hydrolytic degradation of methoxychlor by immobilized cellulase on LDHsFe3O4 nanocomposites
In this study, we synthesized Fe3O4 using the co-precipitation method and then prepared magnetic carrier LDHsFe3O4 by immobilizing layered double hydroxide on Fe3O4 by in situ growth method. Cellulase was immobilized on this magnetic carrier by using glutaraldehyde as a coupling agent, which can be...
| Publié dans: | Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 89(2024), 1 vom: 07. Jan., Seite 170-186 |
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| Auteur principal: | |
| Autres auteurs: | , , , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2024
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| Accès à la collection: | Water science and technology : a journal of the International Association on Water Pollution Research |
| Sujets: | Journal Article Methoxychlor RIA79UD69L Cellulase EC 3.2.1.4 hydroxide ion 9159UV381P Hydroxides |
| Résumé: | In this study, we synthesized Fe3O4 using the co-precipitation method and then prepared magnetic carrier LDHsFe3O4 by immobilizing layered double hydroxide on Fe3O4 by in situ growth method. Cellulase was immobilized on this magnetic carrier by using glutaraldehyde as a coupling agent, which can be used for degrading Methoxychlor (MXC). The results demonstrated the maximum MXC removal efficiency of 73.4% at 45 °C and pH = 6.0 with excellent reusability. Through kinetic analysis, it was found that the degradation reaction conforms to the Langmuir-Hinshelwood model and is a first-order reaction. Finally, according to the EPR analysis, the active radicals in the system were found to be OH· and the degradation mechanism was proposed in combination with LC-MS. This study provides a feasible method for degrading organochlorine pesticides, which can be used for groundwater purification |
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| Description: | Date Completed 15.01.2024 Date Revised 15.01.2024 published: Print Citation Status MEDLINE |
| ISSN: | 0273-1223 |
| DOI: | 10.2166/wst.2023.399 |