...Is Fatimah; Dwiarso Rubiyanto; Septian Perwira Yudha; Gunarti Pratiwi; Ayu Puspita Purpose The purpose of this study is to prepare composite of chitosan-modified smectite clays consisting of montmorillonite and saponite clay minerals and their urea adsorption–desorption study. Prepared materials...

... thermogravimetric analysis, scanning electron microscopy and Fourier transform infrared spectroscopy. The adsorption of Cr(VI) by using using activated carbon supported Fe catalysts derived from walnut shell as an adsorbent and catalyst was investigated under different adsorption conditions. The parameters studied...

... resin adsorption Li⁺. Findings In these adsorption experiments, the basic resin adsorption effect is more obvious. The optimum adsorption conditions are as follows: resin quality is 0.1 g, the volume of fly ash solution is 100 ml, magnetic stirrer speed is 140 r/min and the adsorption...

... and 228.146 Jmol^-1K^-1 for ASAA and -1537.455 KJ/mol, 68008.026 J/mol and 229.523 Jmol^-1K^-1 for ASAS. The shell biomass promises high potential as an efficient adsorbent since the adsorption process was favorable, endothermic and spontaneous. Central...