李长海a,b; 史鹏飞a; 余政哲a; 石宏仁b
LI Changhaia,b; SHI Pengfeia; YU Zhengzhea; SHI Hongrenb
摘要: Experiments for single and bisolute competitive adsorption were carried out to investigate
the adsorptionbehavior ofβ-naphthalenesulfonic acid (NSA) and sulfuric acid from their
solution at 25℃ onto weakly basic resinD301R. Adsorption affinity of sulfuric acid on
D301R was found to be much higher than that of NSA. The dataof single-solute adsorption
were fitted to the Langmuir model and the Freundlich adsorption model. The idealadsorbed
solution theory (IAST) coupled with the single-solute adsorption models were used to
predict the bisolutecompetitive adsorption equilibria. The IAST coupled with the Langmuir
and the Freundlich model for sulfuric acidand NSA, respectively, yields the favorable
representation of the bisolute competitive adsorption behavior.