Adsorption Equilibrium Equation of Carboxylic Acids on Anion-Exchange Resins in Water

Exchange characteristics of monocarboxylic acids and monosulfonic acids onto anion-exchange resins

“…To understand the adsorption of organic acids onto anionexchange resins, we proposed an adsorption equilibrium equation based on the results of experiments using two kinds of carboxylic acid and three kinds of anion-exchange resin in the previous study [9]. The equation revealed that the amount of carboxylic acid adsorption was the sum of the amount of physical adsorption of carboxylic acid molecules and the amount of ion exchange of dissociated carboxylate ions.…”

“…In this study, the equilibria of adsorption and ion exchange of 7 kinds of carboxylic acid and 2 kinds of sulfonic acid onto 16 kinds of anion-exchange resin were examined to confirm whether the proposed equation [9] could be applied to these various combinations. We also discussed the difference in ion exchange characteristics with the kind of organic acid and the type of resin.…”

“…However, there are few fundamental researches on adsorption of organic compounds by anionexchange resins [9][10][11][12][13]; the information on the adsorption characteristics of organic acids onto anion-exchange resins is not sufficient.…”

Adsorption equilibria of formic acid by weakly basic adsorbent Amberlite IRA-67: Equilibrium, kinetics, thermodynamic

“…Takatsuji and Yoshida [15] found out that DIAION WA30 was a good adsorbent for recovery of organic acids from wine, which contained glucose, ethanol, and various acids. Kanazawa et al [16,17] investigated sorption equilibria of nine organic acids including monocarboxylic and monosulfonic acids on 16 anion exchangers. Acid separation behavior on a different resin type and basicity [18] and carboxylic acid transport in porous anion exchangers [19,20] were also studied.…”

Adsorption behaviors of the aminated chitosan adsorbent

“…Many researches on the biosorption for heavy metal ions have been carried out. Many new kinds of bioadsorbent [8,9] have been developed such as mycelium adsorbent [10], surface molecular imprinting adsorbent [11][12][13][14], surface coated mycelium adsorbent [15], chitosan adsorbent [16], imprinting chitosan adsorbent [17,18] and so on.…”