SELECTIVE ADSORPTION STUDIES BY RADIO TRACER TECHNIQUE: SELECTIVE ADSORPTION OF LABELED ALKALI p-DODECYLBENZENE SULFONATE S35OR LABELED POTASSIUM HEXADECANOATE C14AT THE AIR—SOLUTION INTERFACE OF AQUEOUS SOLUTIONS OF SURFACTANT MIXTURE

1960 ◽  
Vol 64 (1) ◽  
pp. 54-57 ◽  
Author(s):  
Kozo Shinoda ◽  
Kazuyoshi Mashio
Keyword(s):  
Aqueous Solutions ◽  
Selective Adsorption ◽  
Surfactant Mixture ◽  
Tracer Technique ◽  
Adsorption Studies ◽  
Solution Interface ◽  
Dodecylbenzene Sulfonate ◽  
Radio Tracer

scholarly journals Husk of Agarwood Fruit-Based Hydrogel Beads for Adsorption of Cationic and Anionic Dyes in Aqueous Solutions

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1437
Author(s):  
Chih Ming Ma ◽  
Bo-Yuan Yang ◽  
Gui-Bing Hong
Keyword(s):  
Aqueous Solutions ◽  
Selective Adsorption ◽  
Order Model ◽  
Anionic Dyes ◽  
Adsorption Selectivity ◽  
Hydrogel Beads ◽  
Batch System ◽  
Initial Ph ◽  
Langmuir Isotherm Model ◽  
Pseudo Second Order

Hydrogel beads based on the husk of agarwood fruit (HAF)/sodium alginate (SA), and based on the HAF/chitosan (CS) were developed for the removal of the dyes, crystal violet (CV) and reactive blue 4 (RB4), in aqueous solutions, respectively. The effects of the initial pH (2–10) of the dye solution, the adsorbent dosage (0.5–3.5 g/L), and contact time (0–540 min) were investigated in a batch system. The dynamic adsorption behavior of CV and RB4 can be represented well by the pseudo-second-order model and pseudo-first-order model, respectively. In addition, the adsorption isotherm data can be explained by the Langmuir isotherm model. Both hydrogel beads have acceptable adsorption selectivity and reusability for the study of selective adsorption and regeneration. Based on the effectiveness, selectivity, and reusability of these hydrogel beads, they can be treated as potential adsorbents for the removal of dyes in aqueous solutions.

Adsorption studies of Toluidine Blue from aqueous solutions onto gypsum

2009 ◽  
Vol 150 (1) ◽  
pp. 90-95 ◽  
Author(s):  
M.A. Rauf ◽  
Shahnaz M. Qadri ◽  
Sarmadia Ashraf ◽  
Karima M. Al-Mansoori
Keyword(s):  
Aqueous Solutions ◽  
Toluidine Blue ◽  
Adsorption Studies
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