The use of natural zeolite and chamotte clay-based sorbents for the extraction of sodium and potassium ions from saline water: a preliminary study

In this work, sorbents based on natural zeolite (Z) and chamotte clay (ChC) treated with NaCl HNO3 solutions were obtained to extract Na+ K+ ions from saline water. The physicochemical characteristics of the studied by SEM, EDAX, BET methods. It was found that successive treatment has a positive effect sorption properties materials. maximum increase in specific surface area 4.5 m2/g 39.3 is observed for acid-treated Z, ChC also increases almost 2-fold 8.4 15.3 m2/g. are extracted water due ion exchange Z cations. As result determining cation capacity (CEC) sorbents, it solution improves sorbent leads formation “homoionic” form aluminosilicates. Due more easily enter reactions. authors established activity materials respect recovery rate 28.45% ChC-Na-H 76.28% ChC-Na sorbent. Among Z-based most effective forms Z-Na-H (15.44% recovery) Z-Na (60.47% recovery).