Equilibrium and kinetic studies on the adsorption of acidic dye by the gel anion exchanger

Preparation and utilization of wheat straw bearing amine groups for the sorption of acid and reactive dyes from aqueous solutions

“…Therefore, the enhancement in sorption with the temperature may largely depend on the increase in interaction between the functional groups on the sorbent surface sites and the adsorbate. This may be also a result of the decrease in the thickness of the boundary layer surrounding the sorbent with the temperature, so that the mass transfer resistance of adsorbate in the boundary layer decreases [31]. …”

“…The sorption results were analyzed to see whether the isotherm obeyed the Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherm models equations [30][31][32].…”

Determining the microelement composition of poppy seeds using solid­phase spectrophotometry method

“…Paper [17] describes the results of study into adsorption equilibria of a dye of the acid type and a gel anion exchanger.…”

Selected aspect in the separation of inorganic and organic species on ion exchangers and sorbents of various types

“…Amberlite IRA-67, Amberlite FPA-51, Amberlyst A-21 and A-23, Amberlite IRA-402, Amberlite IRA-458, Amberlite IRA-900, Amberlite IRA-910, Amberlite IRA-958, Lewatit MonoPlus M-500 and M-600, Purolite A-850, A-520E and AC-20G were used for decolourization of aqueous solutions containing acidic and reactive dyes e.g. Acid Orange 7 [78,79], Acid Orange 10 [77], Acid Red 88 [77], Acid Blue 29 [80,81], Tartrazine [82][83][84], Sunset Yellow [85], Allura Red [86], Indigo Carmine [87,88], Reactive Black [89], Reactive Red 2 and 120 [77] with respect to their application in coloured dyes purification. The influence of many parameters on effectiveness of dyes removal from waste waters, among others, phase contact time, initial concentration of a dye, pH and temperature of a solution, addition of electrolytes and surfactants of various types (nonionic, anionic and cationic).…”