Abstract
1,3-[(2,4-Diethylheptylethoxy)oxy]-2,4-crown-6-Calix[4]arene(Calix[4] arene-R14), used as an extractant of Cs(I) from nitric acid, modified by dodecanol and dodecyl benzenesulfonic acid (DBS), was loaded into the pores of macroporous silica-based polymer support (SiO{sub 2}-P) particles. To evaluate the stability of the adsorbent, the adsorption data at different temperatures (298–323 K) and γ-ray absorbed doses (10–200 kGy) were analyzed by the Langmuir isotherm. The minimum adsorbed amount was calculated to be 0.121 mmol g{sup −1} at 323 K, approximately 23% reduction compared to 298 K. The maximum adsorbed amount of not-irradiated adsorbent with 0.156 mmol g{sup −1} decreased by 20% than that irradiated in 0.5 M HNO{sub 3}. The thermodynamic parameters have revealed that this adsorption reaction is an exothermic and spontaneous process. The reduction in 3 M HNO{sub 3} was about 45% by the comparison between the before- and after-irradiation. It was found that both the concentrations of HNO{sub 3} and DBS have significant influence on the degradation of the adsorbents. - Highlights: • The adsorbed amount of Cs(I) on the adsorbent decreases with increasing temperature. • The values of G° and H° are calculated from the plots of ln K{sub L} versus 1/T. • The adsorption ability of the irradiated adsorbent for
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Citation Formats
Chen, Zi, Wu, Yan, and Wei, Yuezhou.
The effect of temperatures and γ-ray irradiation on silica-based calix[4]arene-R14 adsorbent modified with surfactants for the adsorption of cesium from nuclear waste solution.
United Kingdom: N. p.,
2014.
Web.
doi:10.1016/J.RADPHYSCHEM.2014.06.004.
Chen, Zi, Wu, Yan, & Wei, Yuezhou.
The effect of temperatures and γ-ray irradiation on silica-based calix[4]arene-R14 adsorbent modified with surfactants for the adsorption of cesium from nuclear waste solution.
United Kingdom.
https://doi.org/10.1016/J.RADPHYSCHEM.2014.06.004
Chen, Zi, Wu, Yan, and Wei, Yuezhou.
2014.
"The effect of temperatures and γ-ray irradiation on silica-based calix[4]arene-R14 adsorbent modified with surfactants for the adsorption of cesium from nuclear waste solution."
United Kingdom.
https://doi.org/10.1016/J.RADPHYSCHEM.2014.06.004.
@misc{etde_22485193,
title = {The effect of temperatures and γ-ray irradiation on silica-based calix[4]arene-R14 adsorbent modified with surfactants for the adsorption of cesium from nuclear waste solution}
author = {Chen, Zi, Wu, Yan, and Wei, Yuezhou}
abstractNote = {1,3-[(2,4-Diethylheptylethoxy)oxy]-2,4-crown-6-Calix[4]arene(Calix[4] arene-R14), used as an extractant of Cs(I) from nitric acid, modified by dodecanol and dodecyl benzenesulfonic acid (DBS), was loaded into the pores of macroporous silica-based polymer support (SiO{sub 2}-P) particles. To evaluate the stability of the adsorbent, the adsorption data at different temperatures (298–323 K) and γ-ray absorbed doses (10–200 kGy) were analyzed by the Langmuir isotherm. The minimum adsorbed amount was calculated to be 0.121 mmol g{sup −1} at 323 K, approximately 23% reduction compared to 298 K. The maximum adsorbed amount of not-irradiated adsorbent with 0.156 mmol g{sup −1} decreased by 20% than that irradiated in 0.5 M HNO{sub 3}. The thermodynamic parameters have revealed that this adsorption reaction is an exothermic and spontaneous process. The reduction in 3 M HNO{sub 3} was about 45% by the comparison between the before- and after-irradiation. It was found that both the concentrations of HNO{sub 3} and DBS have significant influence on the degradation of the adsorbents. - Highlights: • The adsorbed amount of Cs(I) on the adsorbent decreases with increasing temperature. • The values of G° and H° are calculated from the plots of ln K{sub L} versus 1/T. • The adsorption ability of the irradiated adsorbent for Cs(I) decreases with increasing dose.}
doi = {10.1016/J.RADPHYSCHEM.2014.06.004}
journal = []
volume = {103}
journal type = {AC}
place = {United Kingdom}
year = {2014}
month = {Oct}
}
title = {The effect of temperatures and γ-ray irradiation on silica-based calix[4]arene-R14 adsorbent modified with surfactants for the adsorption of cesium from nuclear waste solution}
author = {Chen, Zi, Wu, Yan, and Wei, Yuezhou}
abstractNote = {1,3-[(2,4-Diethylheptylethoxy)oxy]-2,4-crown-6-Calix[4]arene(Calix[4] arene-R14), used as an extractant of Cs(I) from nitric acid, modified by dodecanol and dodecyl benzenesulfonic acid (DBS), was loaded into the pores of macroporous silica-based polymer support (SiO{sub 2}-P) particles. To evaluate the stability of the adsorbent, the adsorption data at different temperatures (298–323 K) and γ-ray absorbed doses (10–200 kGy) were analyzed by the Langmuir isotherm. The minimum adsorbed amount was calculated to be 0.121 mmol g{sup −1} at 323 K, approximately 23% reduction compared to 298 K. The maximum adsorbed amount of not-irradiated adsorbent with 0.156 mmol g{sup −1} decreased by 20% than that irradiated in 0.5 M HNO{sub 3}. The thermodynamic parameters have revealed that this adsorption reaction is an exothermic and spontaneous process. The reduction in 3 M HNO{sub 3} was about 45% by the comparison between the before- and after-irradiation. It was found that both the concentrations of HNO{sub 3} and DBS have significant influence on the degradation of the adsorbents. - Highlights: • The adsorbed amount of Cs(I) on the adsorbent decreases with increasing temperature. • The values of G° and H° are calculated from the plots of ln K{sub L} versus 1/T. • The adsorption ability of the irradiated adsorbent for Cs(I) decreases with increasing dose.}
doi = {10.1016/J.RADPHYSCHEM.2014.06.004}
journal = []
volume = {103}
journal type = {AC}
place = {United Kingdom}
year = {2014}
month = {Oct}
}