Efficient removal of microcystin-LR from contaminated water using water-stable MIL-100(Fe) synthesized under HF-free conditions.

Autor: Sobhani D; Natural Resources and Environmental Studies Institute, University of Northern British Columbia, Prince George, BC, Canada.; Northern Analytical Lab Services (Northern BC's Environment & Climate Solutions Innovation Hub), University of Northern British Columbia, Prince George, BC, Canada., Djahaniani H; Northern Analytical Lab Services (Northern BC's Environment & Climate Solutions Innovation Hub), University of Northern British Columbia, Prince George, BC, Canada.; Materials Technology & Environmental Research (MATTER) Lab, University of Northern British Columbia, Prince George, BC, Canada., Duong A; Natural Resources and Environmental Studies Institute, University of Northern British Columbia, Prince George, BC, Canada., Kazemian H; Northern Analytical Lab Services (Northern BC's Environment & Climate Solutions Innovation Hub), University of Northern British Columbia, Prince George, BC, Canada. hossein.kazemian@unbc.ca.; Materials Technology & Environmental Research (MATTER) Lab, University of Northern British Columbia, Prince George, BC, Canada. hossein.kazemian@unbc.ca.; Environmental Sciences Program, Faculty of Environment, University of Northern British Columbia, Prince George, British Columbia, V2N4Z9, Canada. hossein.kazemian@unbc.ca.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2024 Apr; Vol. 31 (16), pp. 24512-24524. Date of Electronic Publication: 2024 Mar 05.
DOI: 10.1007/s11356-024-32675-6
Abstrakt: 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.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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