Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 391, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2019.121467
Keywords
Ordered channel; Macroporous material; Silica dioxide; Cesium; Adsorption
Categories
Funding
- National Natural Science Foundation of China [21866003, 11605027, 21561002, 21866004]
- Project of the Jiangxi Provincial Department of Education [GJJ180372]
- Jiangxi Program of Academic and Technical Leaders of Major Disciplines [20182BCB22011]
- Science & Technology Support Program of Jiangxi Province [2018ACB21007]
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Owning to highly mechanical strength and non-interference effectivity, silica dioxide is often explored as a stable supporter commonly with mesopore. It is known that a macroporous framework has larger mass transfer channel, possibly beneficial to adsorption process. Herein highly ordered macroporous silica dioxide framework (homogeneous pore size of 194.20 nm) was synthesized and embedded with supramolecular (CC/OMS). Cs cation adsorption onto CC/OMS was explored under different pH (presence or absence of humic acid), initial cesium concentration, shaking time, competing ions. The robust cesium uptake capacity demonstrated by a theory adsorption amount of 150.01 mg/g highlighted unique CC/OMS properties combining large mass transfer channel and superior complex capacity of supramolecular. The adsorption was well fit with Langmuir and pseudo-second-order model. Sodium and potassium at a lower concentration showed little influence on cesium adsorption. The results demonstrated that CC/OMS was an alternative material for cesium capture from acidic aqueous solution.
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