Study of lithium ion exchange by two synthetic zeolites: Kinetics and equilibrium

Activated carbon from grape seeds upon chemical activation with phosphoric acid: Application to the adsorption of diuron from water

“…The C values were negligible in all the cases, suggesting that intraparticle diffusion was the prevailing rate-controlling step during the first stage of adsorption (up to around 8 h) where most of the diuron uptake takes place. This result is in agreement with previous studies [43][44][45].…”

Local and Average Structural Changes in Zeolite A upon Ion Exchange

“…Ca-A zeolites are important in industry, where they selectively adsorb linear alkanes from a mixture of branched alkanes [13], and Na + /NH 4 + exchange is useful in minimising environmental pollution and eutrophication [14][15][16][17]. Li-A was proposed as a possible delivery material for pharmacological studies [18]. Li-exchanged zeolites are also used for the separation of nitrogen from air [19].…”

Synthesis and characterization of an analogue of heulandite: Sorption applications for thorium(IV), europium(III), samarium(II) and iron(III) recovery from aqueous waste

“…Integrating these effects into the operation and design of an ion exchange system helps to minimize leakage and aids in troubleshooting when problems arise. Understanding the effect of temperature, pH of the medium, metal ion concentration, sorbent dose etc., can improve the operating capacity and effluent quality levels of an ion exchange system to a degree [26][27][28][29][30][31][32][33][34][35]. It is reasonable to expect that increasing temperature will result in a sharper exhaustion zone, higher exchange rate, and, therefore, higher capacity and better quality.…”