Measurement and Modeling of Th Sorption onto TiO2

Eu(III) adsorption on rutile: Batch experiments and modeling

“…It was found that the presence of soil fulvic acid strongly enhances the adsorption of Eu(III) on TiO 2 (80% anatase and 20% rutile) at pH < 6 [7]. The similar significant effect of soil humic acid was found for both anatase and rutile adsorption systems at pH < 4, whereas at intermediate pH (4)(5)(6)(7)(8) the Eu(III) adsorption is consistently lower than that in the absence of humic acid [6].…”

“…A number of studies on the interactions between TiO 2 and heavy metals and/or anionic pollutants have been reported [5,[8][9][10][11]. Jakobsson [5] investigated the Th(IV) adsorption onto TiO 2 (a mixture of anatase and rutile), finding a reversible formation of an inner sphere complex with a strong pH dependence, and the nonelectrostatic model can fit the experimental data well. Bourikas et al [8] studied the deposition mechanism of the CrO 4 2 , HCrO 4  , and Cr 2 O 7 2 species on the titania based on a 2pK/one site and triple-layer model.…”

“…TiO 2 is an excellent model adsorbent due to its low solubility in water over a wide pH range [2,[5][6][7]. A number of studies on the interactions between TiO 2 and heavy metals and/or anionic pollutants have been reported [5,[8][9][10][11]. Jakobsson [5] investigated the Th(IV) adsorption onto TiO 2 (a mixture of anatase and rutile), finding a reversible formation of an inner sphere complex with a strong pH dependence, and the nonelectrostatic model can fit the experimental data well.…”

“…Europium(III), as an analogue of trivalent actinides, is usually used to predict the adsorption behavior of other trivalent lanthanides and Am(III) [1], thus the adsorption of Eu(III) on the metal oxides and clay minerals has been extensively studied [1][2][3][4]. TiO 2 is an excellent model adsorbent due to its low solubility in water over a wide pH range [2,[5][6][7]. A number of studies on the interactions between TiO 2 and heavy metals and/or anionic pollutants have been reported [5,[8][9][10][11].…”

Th(IV) adsorption on alumina: Effects of contact time, pH, ionic strength and phosphate

“…Recently, there has been some renewed interest in the adsorption of Th(IV) onto TiO 2 [7,8]. The common characteristic of Th(IV) adsorption onto different oxides is the strong pH dependence at pH < 4.5.…”