Investigation of Co(II) sorption on GMZ bentonite from aqueous solutions by batch experiments

Liang, Chen; Yu, Shaoming; Zuo, Liang; Liu, Bin; Huang, Lingli

doi:10.1007/s10967-011-1098-7

Cited by 28 publications

(2 citation statements)

References 52 publications

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“…With a better awareness of this problem, the removal of 60 Co from wastewater has been the focus of many research studies [1,[4][5][6][7][8]. In these studies, sorption is widely adopted and different clay minerals are applied.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of permutite for removal of radiocobalt from nuclear wastewater

Zhao

Luo

et al. 2014

J Radioanal Nucl Chem

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A synthetic zeolite, commercially available as permutite was tested for removing radiocobalt from aqueous solutions by sorption. The sorption process was studied as a function of contact time, pH, ionic strength and solid content by batch technique. The results revealed that the process is dependent on the pH and ionic strength under ambient conditions. The kinetic sorption was fitted well by a pseudo-second-order rate equation. The thermodynamic parameters (DH 0 , DS 0 , DG 0) suggested that sorption behavior of Co(II) is a spontaneous and endothermic process. The study shows that permutite has excellent potential for disposal of wastewaters containing radiocobalt.

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Section: Introductionmentioning

confidence: 99%

Evaluation of permutite for removal of radiocobalt from nuclear wastewater

Zhao

Luo

et al. 2014

J Radioanal Nucl Chem

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“…metal oxides and hydroxides) deposited over nuclear reactor coolant circuit surfaces [1][2][3]. The radionuclide 60 Co(II) is one of the most dangerous radionuclides, in nuclear wastes, affecting the environment due to (i) its relatively long half-life ( 1/2 = 5.27 years), (ii) its high energy (2.5 MeV) gamma emission, and (iii) its quick transport to the environment [4,5]. Therefore, it is necessary to remove radiocobalt from nuclear wastes to avoid its hazardous effects such as paralysis, diarrhea, low blood pressure, lung irritation, skin degeneration and bone defects [6].…”

Section: Introductionmentioning

confidence: 99%

Kinetics of ion flotation of Co(II)–EDTA complexes from aqueous solutions

2015

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The flotation kinetics of Co(II)-EDTA complexes from aqueous solutions using cetylpyridinium chloride (CPyCl) is studied and discussed in the present work. The effects of many variables on the ultimate recovery and the flotation rate are investigated. The data obtained from solutions of different pH values showed that Co(II)-EDTA complexes are successfully floated at pH 7.8. While at pH 3.4 and 11.2, both the ultimate recovery and the flotation rate are dependent on the concentration of CPyCl. Flotation of Co(II)-EDTA at different air flow rates, CPyCl concentrations and ionic strength showed that the ultimate recovery and the flotation rate are markedly affected. The other parameters (cobalt, EDTA and ethanol concentrations) had no effect on the ultimate recovery, while significantly affected the flotation rate. At the optimum conditions (Co(II) : EDTA = 1 : 1; CPyCl : Co(II) = 4 : 1; pH 7.8; = 25 cm 3 /min), removals more than 99% are achieved for radiocobalt. The classical first-order and the secondorder kinetic models are used throughout the work to analyze the experimental kinetic data. At all the studied parameters, the kinetic data of Co(II)-EDTA complexes are better fitted to the classical first-order model.

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Adsorption of Heavy Metals onto Bentonites Used as Buffer/Backfilling Materials

Chen

Cui

et al. 2012

Unsaturated Soils: Research and Applications

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Investigation of Co(II) sorption on GMZ bentonite from aqueous solutions by batch experiments

Cited by 28 publications

References 52 publications

Evaluation of permutite for removal of radiocobalt from nuclear wastewater

Evaluation of permutite for removal of radiocobalt from nuclear wastewater

Kinetics of ion flotation of Co(II)–EDTA complexes from aqueous solutions

Adsorption of Heavy Metals onto Bentonites Used as Buffer/Backfilling Materials

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