Effects and Mechanism of Uranium(vi) Removal by Wood Biochar Loaded with MnFe2O4
Journal of the Taiwan Institute of Chemical Engineers(2024)
Abstract
BackgroundUranium (U) seriously threatens environmental health due to its chemical and radioactivity toxicity unless it is immobilized by adsorption materials.MethodsHere, MnFe2O4 was used to modify biochar derived from apple tree branches to obtain MnFe2O4-biochar (MFBC), which was used for U(VI) removal. The mechanisms were explored by advanced analytical techniques, including scanning electron microscopy combined with energy dispersive X-ray spectroscopy (SEM-EDS), Brunauer-Emmett-Teller (BET), vibrating sample magnetometer (VSM), Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS).Significant findingsThe MFBC displayed a considerable adsorption rate of U(VI), with a maximum adsorption capacity of 83.00 mg/g at pH 6.0 and 313 K. The removal behavior was well described by the Freundlich and pseudo-second-order kinetic models. The dominant removal mechanism was complexation between the negatively charged O-containing groups on the MFBC and the positively charged U(VI). This work demonstrates the potential of MFBC to remediate U(VI)-contaminated wastewater.
MoreTranslated text
Key words
U(VI) contaminated wastewater,Adsorption,Biochar,MnFe2O4,Co-precipitation
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined