Adsorption characteristic of U(VI) ion onto thermally activated bentonite

Aytaş, Şule; Yurtlu, M.; Donat, Ramazan

doi:10.1016/j.jhazmat.2009.07.049

Cited by 156 publications

(50 citation statements)

References 27 publications

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“…39,40 The DTA curve of CP-bentonite/RR 120 composite is almost identical to that of CP-bentonite except for the total mass loss (33.80%) in the temperature range 30-160 • C. However, the differences in the total mass loss and the hydration energy of exchangeable cations (61.84 J g −1 ) corresponding to the evolution of the coordinated water species confirm the efficient displacement of the surfactant ions by the dye species (Table 2). In addition, the thermal stability of the CP-bentonite/dye composite up to 700…”

Section: (Fig 5(c)-(f)) Thermal Treatment At 150mentioning

confidence: 99%

Adsorption of Reactive Red 120 from aqueous solutions by cetylpyridinium‐bentonite

Tabak

Baltaş

Afsin

et al. 2010

J of Chemical Tech & Biotech

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Section: (Fig 5(c)-(f)) Thermal Treatment At 150mentioning

confidence: 99%

Adsorption of Reactive Red 120 from aqueous solutions by cetylpyridinium‐bentonite

Tabak

Baltaş

Afsin

et al. 2010

J of Chemical Tech & Biotech

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“…(iii) Bands centered around (537-787) cm -1 in the stretching mode are due to Si-O-Al and Si-O-Na stretching frequency, and Si-O bending frequencies [34,35].…”

Section: Ft-irmentioning

confidence: 98%

Uranium Adsorption from Aqueous Solution Using Sodium Bentonite Activated Clay

Wm¹

2017

J Chem Eng Process Technol

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Due to extensive variety of nuclear applications, the cost efficient adsorbent is extremely needed for radioactive liquid waste solutions treatment. Bentonite which is consists essentially of clay minerals of the smectite group; have a wide range of industrial uses. In this study, a simple approach to adsorb uranium (VI) from aqueous solution by exchangeable cation by sodium bentonite clay is presented. The effects of contact time, pH of the solution, initial uranium (VI) concentration, adsorbent dosage, and solution temperature on the adsorption of uranium (VI) ions from radioactive liquid solution were investigated. Adsorption isotherms were expressed by Langmuir and Freundlich adsorption models. The theoretical capacity of sodium bentonite clay adsorbent is about 12 mg/g. The optimum adsorption conditions were recommended. About 89% of the loaded Uranium (VI) on modified clay adsorbent was eluted by CH 3 COONa as an efficient eluent. The preferred adsorption and elution conditions were applied on real waste sample and the obtained capacity was determined.

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“…Where is Freundlich isotherm constant indicates the adsorption capacity and n is the Freundlich constant indicates the adsorption intensity [26]. The result of the plot of Langmuir and Freundlich adsorption isotherm model is shown in Figure 8.…”

Section: Freundlich Adsorption Isotherm Modelmentioning

confidence: 99%

Thermal Activated of Indonesian Bentonite as A Low-Cost Adsorbent for Procion Red Removal from Aqueous Solution

Taher

Rohendi²,

Mohadi³

et al. 2018

J. Pure App. Chem. Res.

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Abundant and inexpensive Indonesian natural bentonite was activated by thermal activation at 500 o C for removal of procion red dye as one of the most used synthetic dye in the traditional songket fabric production around Palembang city. Activated bentonite product was characterized by FT-IR, XRD, and thermal analysis. The adsorption process was conducted in batch adsorption system by applying various adsorption parameter condition including, initial pH condition, contact time, and initial dye concentration. The activated bentonite characterization indicates that during the activation process, the structure of the original bentonite was not changed significantly and the result of the thermal analysis revealed that thermal activation at 500 o C was draining the water content without destructing the silica-alumina framework of bentonite. The adsorption kinetics study shows that the procion red adsorption into the activated bentonite follows the pseudo-second order kinetic model. The isotherm adsorption study revealed that procion red adsorption into activated bentonite adapted the Langmuir adsorption isotherm.

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Adsorption characteristic of U(VI) ion onto thermally activated bentonite

Cited by 156 publications

References 27 publications

Adsorption of Reactive Red 120 from aqueous solutions by cetylpyridinium‐bentonite

Adsorption of Reactive Red 120 from aqueous solutions by cetylpyridinium‐bentonite

Uranium Adsorption from Aqueous Solution Using Sodium Bentonite Activated Clay

Thermal Activated of Indonesian Bentonite as A Low-Cost Adsorbent for Procion Red Removal from Aqueous Solution

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