Transport of ionic species through functionalized poly(vinylbenzyl chloride) membranes |
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| Institution: | 1. Ozyegin University, Cekmekoy Campus, Istanbul 34794, Turkey;2. Department of Economics, Georgia State University, Atlanta, GA 30302, United States;1. Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China;1. UCIBIO/REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal;2. Laboratory of Cytogenetics, Department of Microscopy, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal;3. Service of Clinical Hematology, Santo António Hospital, Porto, Portugal;4. Laboratory of Nanotechnology and Magnetism, Institute of Technological Research, IIT, University of Santiago de Compostela (USC), Spain;5. International Iberian Nanotechnology Laboratory, Braga, Portugal;6. UCIBIO/REQUIMTE Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal;1. Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, 305-8565, Japan;2. Department of Intelligent Interaction Technologies, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan;3. Department of Neurosurgery, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan;1. Gazi University, Faculty of Science, Department of Chemistry, 06500 Besevler, Ankara, Turkey;2. Gazi University, Faculty of Pharmacy, Department of Analytical Chemistry, 06330 Etiler, Ankara, Turkey |
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| Abstract: | Solid polymeric membranes of poly(vinylbenzyl chloride) (VBC), lightly crosslinked with divinyl benzene, were incompletely reacted such that a fraction of the benzyl chlorines in different membranes was replaced with either dimethyl phosphonate esters (MPE) or triethyl ammonium chloride groups (QA). This work was conducted in an effort to investigate ionic transport through charged and uncharged membranes and to develop fixed site carrier membranes to facilitate the transport of selected metal ions from an aqueous feed stream to a concentrated acid receiving stream. Bulk solution flow does not occur through these membranes. Instead, solute diffusion occurs through the membrane matrix. The effects of hydrogen ion gradient, metal ion identity and charge, reactive site type, acid type, and ionic strength on metal ion transport were investigated. Results are also presented on the effect of membrane orientation and pretreatment (swelling) on metal ion transport. Facilitated transport was investigated through the testing of membranes with varying MPE percent functionalization. The results presented compare the metal ion transport rate to the functionalization of the membranes. |
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