GIST Scholar
College of Engineering
Department of Environment and Energy Engineering
1. Journal Articles
Complete mineralization of pharmaceutical micropollutant by stable MIL-100(Fe)/H2O2 heterogeneous Fenton-like oxidation
- Type
- Article
- Citation
- DESALINATION, v.639
- Issued Date
- 2026-12
- Abstract
- Advanced oxidation processes (AOPs) have been extensively studied as promising environmental technologies for the removal of organic contaminants in aqueous environments. Pharmaceutical micropollutants, including antibiotics, are persistent contaminants in water and wastewater streams, requiring treatment approaches that go beyond parent-compound removal and verify mineralization. Comprehensive characterization of contaminant degradation and its pathways is thus essential to ensure the complete mineralization of the target antibiotic and its by-products for environmental safety. In this study, the complete mineralization pathway of doxycycline (DOX) was systematically examined using a MIL-100(Fe)/H2O2 catalytic system. Under optimized conditions, the system achieved 97.94% DOX removal with rapid pseudo-first-order kinetics (k(1) = 4.2 & times; 10(-2) min(-1)). Total organic carbon (TOC) analysis confirmed a 96.01% removal within 120 min, reaching TOC elimination at 360 min. The MIL-100(Fe)/H2O2 also demonstrated high performance at elevated target concentration, achieving >79% DOX removal at 30 mgL(-1). Time-resolved TOC, inorganic carbon, adsorbed DOX, and LC-MS analyses indicated progressive transformation and mineralization rather than removal by adsorption. Reusability experiments showed that MIL-100(Fe) retained catalytic activity over 5 cycles, although a gradual decrease in mineralization efficiency was observed. Overall, the results demonstrate effective DOX degradation and extensive mineralization by the MIL-100(Fe)/H2O2 system and illustrate the importance of combining parent-compound analysis with carbon-based measurements when evaluating advanced oxidation processes during the removal of micropollutants.
- Publisher
- ELSEVIER
- ISSN
- 0011-9164
- Appears in Collections:
- Department of Environment and Energy Engineering > 1. Journal Articles
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