Fenton oxidation pretreatment enhanced the production efficiency of artificial humic acids from kitchen waste by hydrothermal process
Copyright © 2025. Published by Elsevier Ltd.
| Publié dans: | Waste management (New York, N.Y.). - 1999. - 208(2025) vom: 06. Okt., Seite 115173 |
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| Auteur principal: | |
| Autres auteurs: | , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2025
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| Accès à la collection: | Waste management (New York, N.Y.) |
| Sujets: | Journal Article Artificial humic acids Fenton oxidation pretreatment Hydrothermal humification Kitchen waste Humic Substances Iron E1UOL152H7 Hydrogen Peroxide BBX060AN9V |
| Résumé: | Copyright © 2025. Published by Elsevier Ltd. The conversion of kitchen waste (KW) into artificial humic acids (AHAs) through hydrothermal processing represents a highly promising approach for sustainable resource recovery. Reducing hydrothermal duration while enhancing AHAs yield is of vital significance in most applications. This study for the first time employs Fenton oxidation as a pretreatment strategy for the hydrothermal humification of KW, effectively enhancing AHAs production efficiency. The pretreatment significantly reduces the hydrothermal processing time required to achieve the highest AHAs production from 6 h to 3 h at 180 °C, while simultaneously increasing AHAs yield from 14.37 ± 0.61 wt% to 18.43 ± 0.21 wt%. Comparative analysis of pretreatment-derived AHAs (FHA-3), non-pretreatment derived AHAs (HHA-6), and commercial humic acids (CHA) through various characterizations demonstrated structural similarity between FHA-3 and HHA-6, whereas both exhibited marked difference from CHA. Furthermore, the above characterization techniques provide critical insights into the mechanism of AHAs synthesis. Fenton oxidation treatment induces significant changes in the properties of raw materials, accelerating the formation of AHAs intermediates during hydrothermal humification and thereby enhancing AHAs production efficiency. This study provides a promising hydrothermal humification method for converting KW into AHAs and offers technical support for practical applications |
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| Description: | Date Completed 15.10.2025 Date Revised 15.10.2025 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1879-2456 |
| DOI: | 10.1016/j.wasman.2025.115173 |