Sorption and preconcentration of some heavy metals by 2-mercaptobenzothiazole-clay

Preparation of an adsorbent by graft polymerization of acrylamide onto coconut husk for mercury(II) removal from aqueous solution and chloralkali industry wastewater

“…The Langmuir parameters Q max and K calculated from the slope and intercept of the plots are shown in Table I. Although direct comparison of PGCHCOOH with other adsobent materials having different chelating groups is difficult, owing to the different experimental conditions, it was found, in general, that the adsorption capacity ( Q max ) of PGCHCOOH for Hg(II), determined to be 6.22 × 10 −4 mol g −1 , is higher than that of amino‐functionalized chitosan29(4.00 × 10 −4 mol g −1 ), 2‐mercaptobenzothiazole‐treated clay30 (0.14 × 10 −4 mol g −1 ), humic acid 31 (0.50 × 10 −4 mol g −1 ), formaldehyde‐polymerized sawdust 32 (1.94 × 10 −4 mol g −1 ), and polyacrylamide‐grafted titanium(IV) oxide gel 13 (3.75 × 10 −4 mol g −1 ).…”

Sorptive potential of a cationic exchange resin of carboxyl banana stem for mercury(II) from aqueous solutions

“…; solubility and temperature effects, work in the same direction, causing a decrease in the adsorption. The reported Q 0 values for the adsorption of Hg(II) on 2-mercaptobenzothiozole-clay [19], photofilm waste slurry [20] and polymerized sawdust [21], were formed to be 2.69, 11.72 and 38.8 mg g −1 , respectively. The comparison of Q 0 values of CBS used in the present study with literature shows that CBS is more effective for this purpose.…”

A green l-cysteine modified cellulose nanocrystals biosorbent for adsorption of mercury ions from aqueous solutions

“…4 Among various treatment methods, adsorption is an effective, simple and feasible method to remove Hg(II) from water. 5 At present, many adsorbents (such as inorganic [6][7][8] and organic materials 9 ) have been developed to remove Hg(II) from aqueous solutions. However, their application is limited because they are not renewable or cause secondary pollution to the environment.…”