Solubility of Eu2(SeO3)3 and sorption of Eu(III) onto TiO2 in the presence of Se(IV)

Shi, Keliang; Liu, Fuqiang; Ye, Yuanlv; Guo, Zhimou; Wu, Wangsuo

doi:10.1007/s10967-011-1600-2

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…In the studies compiled in Table , there are primarily two types of unfavorable treatments that may lead to problems. The first is the use of model 1 to predict sorption equilibrium at different sorbent concentrations or to calculate the required sorbent dose for certain treatment targets (e.g., refs − .). The SCMs formulated as model 1 will only work at the sorbent concentration at which the models were calibrated, and they will always overestimate the extent of multidentate adsorption at higher sorbent concentrations and underestimate it at lower sorbent concentrations.…”

Section: Multidentate Adsorption In Surface Complexation Modeling: Pr...mentioning

confidence: 99%

Mass Action Expressions for Bidentate Adsorption in Surface Complexation Modeling: Theory and Practice

Wang

Giammar

2013

Environ. Sci. Technol.

100

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The inclusion of multidentate adsorption reactions has improved the ability of surface complexation models (SCM) to predict adsorption to mineral surfaces, but variation in the mass action expression for these reactions has caused persistent ambiguity and occasional mishandling. The principal differences are the exponent (α) for the activity of available surface sites and the inclusion of surface site activity on a molar concentration versus fraction basis. Exemplified by bidentate surface complexation, setting α at two within the molar-based framework will cause critical errors in developing a self-consistent model. Despite the publication of several theoretical discussions regarding appropriate approaches, mishandling and confusion has persisted in the model applications involving multidentate surface complexes. This review synthesizes the theory of modeling multidentate surface complexes in a style designed to enable improvements in SCM practice. The implications of selecting an approach for multidentate SCM are illustrated with a previously published data set on U(VI) adsorption to goethite. To improve the translation of theory into improved practice, the review concludes with suggestions for handling multidentate reactions and publishing results that can avoid ambiguity or confusion. Although most discussion is exemplified by the generic bidentate case, the general issues discussed are relevant to higher denticity adsorption.

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Section: Multidentate Adsorption In Surface Complexation Modeling: Pr...mentioning

confidence: 99%

Mass Action Expressions for Bidentate Adsorption in Surface Complexation Modeling: Theory and Practice

Wang

Giammar

2013

Environ. Sci. Technol.

100

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Evaluation of Se(IV) removal from aqueous solution by GMZ Na-bentonite: batch experiment and modeling studies

Shi

Guo

et al. 2013

J Radioanal Nucl Chem

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Exploring sorption behaviors of Se(IV) and Se(VI) on Beishan granite: Batch, ATR-FTIR, and XPS investigations

Geng

Wang

Din

et al. 2020

Journal of Molecular Liquids

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Solubility of Eu2(SeO3)3 and sorption of Eu(III) onto TiO2 in the presence of Se(IV)

Cited by 3 publications

References 17 publications

Mass Action Expressions for Bidentate Adsorption in Surface Complexation Modeling: Theory and Practice

Mass Action Expressions for Bidentate Adsorption in Surface Complexation Modeling: Theory and Practice

Evaluation of Se(IV) removal from aqueous solution by GMZ Na-bentonite: batch experiment and modeling studies

Exploring sorption behaviors of Se(IV) and Se(VI) on Beishan granite: Batch, ATR-FTIR, and XPS investigations

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