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- Title
Efficient removal of microcystin-LR from contaminated water using water-stable MIL-100(Fe) synthesized under HF-free conditions.
- Authors
Sobhani, Dorna; Djahaniani, Hooreih; Duong, Ann; Kazemian, Hossein
- Abstract
Cyanobacterial algal hepatotoxins, called microcystins (MCs), are a global health concern, necessitating research on effective removal methods from contaminated water bodies. In this study, we synthesized non-fluorine MIL-100(Fe) using an environmentally friendly room-temperature method and utilized it as an adsorbent to effectively remove microcystin-LR (MC-LR), which is the most toxic MC congener. MIL-100(Fe) was thoroughly characterized, and its adsorption process was investigated under various conditions. Results revealed rapid MC-LR adsorption, achieving 93% removal in just 5 min, with the pseudo-second-order kinetic model indicating chemisorption as the primary mechanism. The Langmuir isotherm model demonstrated a monolayer sorption capacity of 232.6 µg g–1 at room temperature, showing favorable adsorption. Furthermore, the adsorption capacity increased from 183 µg g−1 at 20 °C to 311 µg g−1 at 40 °C, indicating an endothermic process. Thermodynamic parameters supported MC-LR adsorption's spontaneous and feasible nature onto MIL-100(Fe). This study highlights MIL-100(Fe) as a promising method for effectively removing harmful biological pollutants, such as MC-LR, from contaminated water bodies in an environmentally friendly manner.
- Subjects
WATER pollution; WATER use; LANGMUIR isotherms; ARSENIC removal (Water purification); ADSORPTION capacity; BODIES of water
- Publication
Environmental Science & Pollution Research, 2024, Vol 31, Issue 16, p24512
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-024-32675-6