| Summary: | This work, using a batch study, revealed the performance of modified magnetite millscales with a cationic surfactant [cetyl
trimethyl ammonium bromide (CTAB)] (Fe3O4/CTAB MNS) in cadmium ion removal from aqueous solution. The self-assembly
method was employed to modify Fe3O4 with CTAB. As prepared Fe3O4 limited the modification method to ex situ. Therefore, a
heterocoagulation method was used to self-assemble CTAB on Fe3O4. The prepared magnetic nanosorbents (MNSs) were used
in batch adsorption to optimize cadmium adsorption. In addition, characterization with Fourier transform infrared spectroscopy
(FTIR) and transmission electron microscopy (TEM) revealed new characteristics of that modified Fe3O4 that contributed to the
enhancement of the adsorption efficiency (Q) to reach 21.6 mg/g. The higher removal percentage shown by Fe3O4/CTAB MNS
was 89%, which confirmed the successful modification. Therefore, Fe3O4 modified with CTAB has higher potential to be used as
magnetic nanosorbent owing to lower cost of production with compatible adsorption capacity.
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