Influence of sorption parameters on cesium-137 removal using modified activated carbon obtained from corchorus olitorius stalks

Removal of Cs-137 radionuclides from the environment has engrossed the concern of researchers after Fukushima accident. The leakage of radioactive cesium ions can lead up to surface and groundwater contamination, and this leads to pollution of drinking water sources. In this work, corchorus olitorius stalks has been used as a novel precursor for production of low-cost mesoporous activated carbon (Meso-AC) and HNO3/H2O2-modified Meso-AC (m-Meso-AC). The physicochemical properties of all adsorbents were evaluated. The influences of sorption parameters and presence of some ligands (humic acid, fulvic acid, and EDTA) on the sorption of Cs-137 were studied. The maximum Cs-137 capacity of m-Meso-AC was found to be 58.74 mg/g. Efficiency of the new adsorbent to remove Cs-137 radionuclides from natural waters (tap, river, and groundwater) was investigated. The studies showed that new adsorbent could be used as promising material for the retention of Cs-137 from real radioactive waste and natural water samples.