Sorption behavior of thorium(IV) onto activated bentonite

Yin, Zhoulan; Pan, Duoqiang; Liu, Peng; Wu, Haixia; Zhan, Li; Wu, Wangsuo

doi:10.1007/s10967-018-5716-5

Cited by 27 publications

(7 citation statements)

References 34 publications

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“…In another study, adsorption of indium on chitosan-coated bentonite is best described by Langmuir isotherm whereas the adsorption kinetics fits the pseudo second order [76]. Thorium (IV) sorption onto activated bentonite depends on temperature, pH, ionic strength, and type of anion and the adsorption kinetics can be described by pseudo-second-order model [77]. The activated bentonite is effective for removal of thorium (IV) and associates with it via surface complexation [77].…”

Section: Bentonitementioning

confidence: 98%

“…Thorium (IV) sorption onto activated bentonite depends on temperature, pH, ionic strength, and type of anion and the adsorption kinetics can be described by pseudo-second-order model [77]. The activated bentonite is effective for removal of thorium (IV) and associates with it via surface complexation [77]. In the another study, bentonite was effectively used to remove thorium (IV) at pH 3, equilibration time of 18 h and 25°C and adsorption was fitted to Freundlich, Langmuir and Dubinin-Radushkevich isotherm models.…”

Section: Bentonitementioning

confidence: 99%

See 1 more Smart Citation

Sorption of Heavy Metals on Clay Minerals and Oxides: A Review

Ugwu¹,

Igbokwe²

2019

Advanced Sorption Process Applications

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Section: Bentonitementioning

confidence: 98%

Section: Bentonitementioning

confidence: 99%

Sorption of Heavy Metals on Clay Minerals and Oxides: A Review

Ugwu¹,

Igbokwe²

2019

Advanced Sorption Process Applications

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“…As some are listed in Table 6, on one hand, cassiterite is superior to some reported inorganic mineral adsorbents with shorter adsorption equilibrium time (210 min) and higher adsorption capacity (61.46 mg g −1 ) for Th(IV), whereas it usually takes hours to arrive adsorption equilibrium for other listed inorganic mineral adsorbents, and the adsorption capacity is lower. For example, 2880 min and 81.2 mg g −1 for Al-pillared rectorite [11], 300 min and 3.71 mg g −1 for Attapulgite [12], 1440 min and 23.2 mg g −1 for MX-80 bentonite [13], 2880 min and 38.28 mg g −1 for Na-bentonite [14], 90 min and 1.14 mg g −1 for Illite [15], 900 min and 6.55 mg g −1 for activated bentonite [16].…”

Section: Comparison With Other Inorganic Mineral Adsorbentsmentioning

confidence: 99%

Extraction and determination of Th(IV) from aqueous acidic solutions using natural cassitrite adsorbent

et al. 2019

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This work concerned with the extraction of Th(IV) from aqueous solutions using natural cassitrite adsorbent natural tin oxide mineral (SnO 2 ). The achieved maximum Th(IV) adsorption efficiency (99.2%) depends mainly on some effective parameters such as pH value, contact time, dose of cassiterite, concentration of Th(IV) and temperature. The Langmuir and Freundlich models are used to simulate the sorption isotherms, respectively. On the other hand, not less than 99.6% of the uptaken Th(IV) was regenerated using 0.005 mol L −1 HCl solution by stirring for 25 min to yeild Th(IV) concentrated solution. The concentrations of Th(IV) in all extraction process were spectrophotometric estimated using 1,4-di-hydroxy anthraquinone and Arsenazo(III) at λ max 600 and 655 nm, respectively.

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“…Recent studies on the separation, concentration, removal or recovery of thorium from aqueous solutions, including by membrane techniques [ 256 , 257 , 258 , 259 , 260 , 261 , 262 , 263 , 264 , 265 , 266 , 267 , 268 , 269 , 270 , 271 ] ( Table 7 ), have led to promising results, reinforcing the idea that membrane or hybrid processes can contribute to the imaging of the technological recycling of thorium from various residues, especially industrial, on municipal waste processing platforms.…”

Section: Problems In Application and Achievement As Well As Developme...mentioning

confidence: 99%

Thorium Removal, Recovery and Recycling: A Membrane Challenge for Urban Mining

Man,

Albu,

Nechifor

et al. 2023

Membranes

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Although only a slightly radioactive element, thorium is considered extremely toxic because its various species, which reach the environment, can constitute an important problem for the health of the population. The present paper aims to expand the possibilities of using membrane processes in the removal, recovery and recycling of thorium from industrial residues reaching municipal waste-processing platforms. The paper includes a short introduction on the interest shown in this element, a weak radioactive metal, followed by highlighting some common (domestic) uses. In a distinct but concise section, the bio-medical impact of thorium is presented. The classic technologies for obtaining thorium are concentrated in a single schema, and the speciation of thorium is presented with an emphasis on the formation of hydroxo-complexes and complexes with common organic reagents. The determination of thorium is highlighted on the basis of its radioactivity, but especially through methods that call for extraction followed by an established electrochemical, spectral or chromatographic method. Membrane processes are presented based on the electrochemical potential difference, including barro-membrane processes, electrodialysis, liquid membranes and hybrid processes. A separate sub-chapter is devoted to proposals and recommendations for the use of membranes in order to achieve some progress in urban mining for the valorization of thorium.

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Sorption behavior of thorium(IV) onto activated bentonite

Cited by 27 publications

References 34 publications

Sorption of Heavy Metals on Clay Minerals and Oxides: A Review

Sorption of Heavy Metals on Clay Minerals and Oxides: A Review

Extraction and determination of Th(IV) from aqueous acidic solutions using natural cassitrite adsorbent

Thorium Removal, Recovery and Recycling: A Membrane Challenge for Urban Mining

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