Open AccessRemoval of Rhodamine B dye from aqueous solution by heterogeneous UV-Fenton catalytic process
Author(s) -
Hoa-Hung Lam,
Tuyet-Mai Tran-Thuy,
Trung DangBao
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1711/1/012004
Subject(s) - rhodamine b , aqueous solution , catalysis , chemistry , mineralization (soil science) , nanoparticle , rhodamine , nuclear chemistry , photochemistry , photocatalysis , materials science , fluorescence , organic chemistry , nanotechnology , physics , quantum mechanics , nitrogen
In this study, the removal of Rhodamine B at high concentrations (25–100 ppm) from aqueous solution was carried out via the heterogeneous UV-Fenton catalytic process based on Fe 3 O 4 nanoparticles. The removal efficiency of Rhodamine B (C 0 = 50 ppm) reached 100% after 4 hours treatment, corresponding to the mineralization efficiency of 70%. In comparison with the conventional Fenton processes, the assistance of UV irradiation boosted the OH • radical generation and prevented the formation of ionic complexes between Fe 3+ and Rhodamine B, permitting the catalyst activity improvement. In addition, Fe 3 O 4 nanoparticles could be easily separated by an external magnet and then re-cycled several times with minimal loss of catalyst activity.