1. Aminopropyl-grafted various silica mesostructures for adsorption of molybdenum ions from Re-containing effluent
- Author
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Hongqiang Ru, Wei Wang, Qing Zhang, Yanning Shu, Weijun Shan, and Ying Xiong
- Subjects
Ion exchange ,Chemistry ,General Chemical Engineering ,Inorganic chemistry ,chemistry.chemical_element ,02 engineering and technology ,Surfaces and Interfaces ,General Chemistry ,Mesoporous silica ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Ion ,Adsorption ,Molybdenum ,Chelation ,0210 nano-technology ,Mesoporous material ,Effluent ,Nuclear chemistry - Abstract
Four different silica mesostructures, SBA-15 with mesopore size (8.5 nm), SBA-15 with mesopore size (10.3 nm), mesocellular foam (MCF) with uniform cell size (33.2 nm), and MCF with bimodal mesoporosity, were grafted with aminopropyl groups and used for selective recovery of Mo(VI) from Re(VII)-containing effluent. Adsorption isotherms and mechanism of Mo(VI) adsorption on these materials were studied. The adsorbed complexes of Mo(VI) could be formed by ion exchange process or/and by chelation reaction. This study shows a new approach for fractional recovery and separation of Mo(VI) from Re(VII) by using amino-modified SBA-15-type mesoporous silica.
- Published
- 2016
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