 Zinc ferrite humic acid, ZFO PHA, nanocomposites were developed as an efficient material for the removal of cesium and barium ions from contaminated water. The materials were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, energy dispersive X-ray spectrometry, and scanning electron microscopy. The adsorption kinetics followed the second-order rate equation, and the adsorption isotherms fitted the Langmuir model. The maximum separation between cesium and barium ions was achieved at pH 5 within CSBA ratio of 3.3. The results suggest that ZFO PHA nanocomposites can be used as an effective material for the removal of cesium and barium ions from contaminated water. This article was authored by MIA Abdel Maixoud, G.A. Murad, W.F. Saha, and others.