Extraction of Perchlorate Using Porous Organosilicate Materials
Autor: | Jenna R. Taft, Martin H. Moore, Anthony P. Malanoski, Ronald L. Siefert, Brian J. Melde, Iwona A. Leska, Brandy J. Johnson, Jeffrey R. Deschamps |
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Jazyk: | angličtina |
Rok vydání: | 2013 |
Předmět: |
periodic mesoporous organosilica
perchlorate solid phase extraction groundwater monitoring Technology Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
Zdroj: | Materials, Vol 6, Iss 4, Pp 1403-1419 (2013) |
Druh dokumentu: | article |
ISSN: | 1996-1944 |
DOI: | 10.3390/ma6041403 |
Popis: | Sorbent materials were developed utilizing two morphological structures, comprising either hexagonally packed pores (HX) or a disordered pore arrangement (CF). The sorbents were functionalized with combinations of two types of alkylammonium groups. When capture of perchlorate by the sorbents was compared, widely varying performance was noted as a result of differing morphology and/or functional group loading. A material providing improved selectivity for perchlorate over perrhenate was synthesized with a CF material using N-trimethoxysilylpropyl-N,N,N-trimethylammonium chloride. Materials were applied in batch and column formats. Binding isotherms followed the behavior expected for a system in which univalent ligands of varying affinity compete for immobilized sites. Performance of the sorbents was also compared to that of commercial Purolite materials. |
Databáze: | Directory of Open Access Journals |
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