Study on the Adsorption Feature of Rutin Aqueous Solution on Macroporous Adsorption Resins

Abstract

The adsorption feature of different kinds of polystyrene-based macroporous adsorption resins (MARs) was investigated systemically at constant temperature employing Rutin as the adsorbate. Different from traditional adsorption patterns, Langmuir and Freundlich adsorption, and the results showed interesting aspects: (1) With the increase of the volume of the initial solution, the adsorption capacity increased to the maximum, and then decreased gradually. (2) Experimental results clearly verified the opinion that the adsorption process of MARs could be divided into three stages-macropores, mesopores, and micropores-by the capillary effects occurring at the two intersections, and the adsorption feature for every stage could be described well by the fourth type of Brunauer model. (3) The model that the inductive effect transmitted to the first layer could not interpret our experimental results reasonably. Thus, the model that the inductive effect passed on to a higher layer was proposed by investigating regression of the experimental results and the conclusion that the inductive effect transmitted to the third layer was drawn.

Adsorption behaviors for oleuropein from olive leaves extracts by porous materials with carbon nanotubes

“…It was possibly ascribed to that the pores of the porous materials were consisted of micropores, mesopores, or macropores, and adsorption layers were different in different pores due to intermolecular interactions and pore size. The literature concerning rutin adsorbed by MARs with polystyrene as matrix has been reported, and the adsorption process was achieved with multilayers [34]. Furthermore, the parameters R L and 1/n were in the range of 0~1, indicating the adsorption process was favorable.…”

Evaluation on the adsorption capability of chemically modified macroporous adsorption resin with ionic liquid

“…2 illustrates the elaborate preparation process of the ionic liquid/MAR. AB-8 was pretreated according to our previous work [3]. First, the pretreated AB-8 was soaked in dichloromethane for 24 h. Zinc chloride, sodium chloride, and AB-8 were suspended with chloromethyl methyl ether at 311 K for 4 h with mechanical agitation (120 rpm).…”

“…MARs are more attractive than common adsorbents because of their favorable physical and chemical stabilities, large specific surface areas, high adsorption capacities, easy regeneration, and long service life [3]. Given these superior properties, MARs have been widely used in various fields [4][5][6][7].…”

Retracted: Adsorption Features of Flavonoids on Macroporous Adsorption Resins Functionalized with Ionic Liquids

“…[29][30][31][32][33] The values of the coefficient of recovery (P) and the relative standard deviation (RSD) in the experiments were 93.46 and 0.35 %, respectively, which indicates that the accuracy and precision satisfy the needs of the experiment.…”

“…[29][30][31][32] A capillary effect was also found in the process of adsorption. [33] In order to investigate the adsorption features of MARs, a series of MARs functionalized with chloromethyl and amino groups was synthesized, and they produced higher adsorption capacity than the original ones. [34] Herein, we focus on a new method for investigating the adsorption-kinetics features.…”