Removal and recovery of Hg(II) from aqueous solution using chitosan-coated cotton fibers

Recovery of Indium(III) from a Hydrochloric Acid Medium with Two Types of Solvent Impregnated Resins Containing Sec-octylphenoxy Acetic Acid

“…Similar phenomena were found in the adsorption of Hg(II) on chitosan-coated cotton fibers [26], and Ag(I) on amidoximated porous acrylonitrile/methyl acrylate copolymer beads [27], which was attributed to the presence of an energy barrier in the adsorption process and to the activated complex in the transition state in an excited form.…”

“…The Lagergren first order kinetics model and a pseudo second order model were used to investigate the dominant mechanism of the adsorption process. The Lagergren first order model is represented by the equation: [26] …”

“…It was observed that the adsorption of In(III) at different temperatures did not fit the Lagergren first order model. The kinetic data were further analyzed using a pseudo second order model, and the linear form of this model is shown as follows [26]:…”

Adsorption kinetics and equilibrium of copper from ethanol fuel on silica-gel functionalized with amino-terminated dendrimer-like polyamidoamine polymers

“…Chen [39] and Hg 2+ on the chitosan-coated cotton fibers by Qu et al [40], which was attributed by these authors to the presence of an energy barrier in the adsorption process and to the activated complex in the transition state in an excited form.…”

Determination of Mercury(II) in the Presence of Methylmercury after Preconcentration Using Poly(acrylamide) Grafted onto Cross-linked Poly(4-vinyl pyridine): Application to Mercury Speciation

“…Moreover, the preconcentration step also separates the analyte from most of the matrix materials, and thus eliminates possible interferences, and lower detection limits are achieved. 16 Several techniques have been used for the preconcentration of mercury, such as solvent extraction 17 and solid-phase extraction by polymeric sorbents, 18,19 wool, 20 activated carbon, 21 chitosan, 22 chelating resins, 23 clay, 24 and other materials. 25,26 Particularly, polymeric sorbents have recently attracted more attention because of their larger sorption capacities, higher efficiencies and ease of preparation.…”