Sorption of calcium and magnesium cations on glauconite from running chloride solutions
Keywords:
cations, magnesium, calcium, glauconite, running solution, decrease, drinking water, feed water, sorption kinetics.Abstract
Sorption of Mg2+ cations with an initial concentration (IC) of 3 and 120 mg /L Ca2+ (IC-100 mg /l) on 95% glauconite concentrate has been studied from running chloride solutions at a linear flow rate of 0.30.5
m /h and the sorbent bed height of 0.5-2.0 cm. It is shown that the sorbent is effective for softening drinking water with increased hardness (10 mmol-eq/l) to adjust it to the regulatory requirements (7 mmol-eq/l). Glauconite concentrate allows to finish softening of feed water for high-pressure boilers to reduce its hardness relative to Mg2+ down to 0.015 mmol-equiv/l. The values of the permissible times of sorption (τper) to sorbent replacement at studied conditions of the process have been obtained. The value of dynamic sorption has been estimated to the moment of τper achievement.
