In Situ Modification of Reverse Osmosis Membrane Elements for Enhanced Removal of Multiple Micropollutants
| Autor: | Viatcheslav Freger, Katie Baransi-Karkaby, Maria Bass |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Filtration and Separation
Portable water purification 02 engineering and technology 010501 environmental sciences lcsh:Chemical technology 01 natural sciences Desalination Article Boric acid chemistry.chemical_compound reverse osmosis Chemical Engineering (miscellaneous) lcsh:TP1-1185 lcsh:Chemical engineering Reverse osmosis 0105 earth and related environmental sciences Concentration polarization micropollutant removal Process Chemistry and Technology lcsh:TP155-156 021001 nanoscience & nanotechnology Membrane Wastewater chemistry Chemical engineering in situ membrane modification Water treatment boron removal spiral wound elements 0210 nano-technology |
| Zdroj: | Membranes, Vol 9, Iss 2, p 28 (2019) Membranes Volume 9 Issue 2 |
| ISSN: | 2077-0375 |
| Popis: | Reverse osmosis (RO) membranes are widely used for desalination and water treatment. However, they insufficiently reject some small uncharged micropollutants, such as certain endocrine-disrupting, pharmaceutically active compounds and boric acid, increasingly present in water sources and wastewater. This study examines the feasibility of improving rejection of multiple micropollutants in commercial low-pressure RO membrane elements using concentration polarization- and surfactant-enhanced surface polymerization. Low-pressure membrane elements modified by grafting poly(glycidyl methacrylate) showed enhanced rejection of all tested solutes (model organic micropollutants, boric acid, and NaCl), with permeability somewhat reduced, but comparable with commercial brackish water RO membranes. The study demonstrates the potential and up-scalability of grafting as an in situ method for improving removal of various classes of organic and inorganic micropollutants and tuning performance in RO and other dense composite membranes for water purification. |
| Databáze: | OpenAIRE |
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