Kinetics of Cr(III) Adsorption/Desorption at the γ-Al2O3/Water Interface by the Pressure-Jump Technique

Adsorption Mechanism of Gallium(III) and Indium(III) onto γ-Al2O3

“…3a. Similar relaxation curves were The study on Cr(III) adsorption by Chang et al (12) has also observed for the In(III)/g-Al 2 O 3 suspension. The t 01 suggested that the dominant surface species are Cr 3/ and was obtained from the natural logarithmic plot of the electri-CrOH 2/ , while Wehril et al (11) report surface CrOH 2/ cal potential versus time (Fig.…”

“…[3] and [4]) the formation of complexes between the background electrolyte ions and the surface. Based on our recent work (12), the interactions of Ga(III)/In(III) on the surface of g-Al 2 O 3 are assumed to be those shown in Parts III and IV of Table 1. Ion-pair formation at the b-plane (Eqs.…”

Gallium(III) adsorption on carbonates and oxides: X-ray absorption fine structure spectroscopy study and surface complexation modeling

“…Among trace elements, hydrolyzates located in the third and fourth column of the Periodic Table are the most likely to be affected by sorption processes and colloidal transport, as follows from recent ultrafiltration experiments [2][3][4][5]. In contrast to a large number of studies devoted to adsorption and colloidal behavior of divalent metals, rare earth elements, and actinides in aquatic systems [6][7][8][9][10][11][12][13][14][15], very little is known on interface equilibria of less common "insoluble" trivalent and tetravalent elements (Al, Sc, Ti, Cr, Ga, Ge, Y, Zr, In, Hf, Tl) [16][17][18][19]. Until recently, progress in studying the adsorption of these elements has been significantly hampered by ana-…”

Adsorption Behavior of Cr(VI) on Al-Fe Cointercalated Bentonite

“…Among these methods, adsorption has been generally considered to be one of the most simple, efficient, economical and feasible process for removing Cr(VI) from aqueous solutions (Burks et al 2014). A number of sorbents like clay, activated carbon, zeolite, alumina, silica, and other resinous materials (Jose et al 1986;Matsumoto, Weber, and Kyles 1989;Loizidou et al 1992;Chang et al 1994) have been investigated for their potential for the removal of chromium from solution.…”