| Titre : |
NH4HCO3 as additive for fabrication of thin film nanocomposite membrane with enhanced permeability |
| Type de document : |
texte imprimé |
| Auteurs : |
Yanchun Li, Auteur ; Shilin Zhou, Auteur ; Jin He, Auteur ; Yuwen Lai, Auteur ; Wentao Yan, Auteur ; Yong Zhou, Auteur ; Congjie Gao, Auteur |
| Année de publication : |
2024 |
| Article en page(s) : |
p. 413-421 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Caractérisation
Couches minces
Membranes (technologie)
Moussants
Nanobulles
Nanofiltration
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
During interfacial polymerization, the in situ growth of nanobubbles can exist between the support layer and the separation layer of the membrane, which changes the microstructure of the membrane and improves its performance. The incorporation of R812s SiO2 in the preparation of the mixed matrix nanofiltration membrane increases the surface interface pores, thereby improving the flux. In this study, NH4HCO3 foaming agent was introduced into the aqueous phase of the R812s SiO2 nanofiltration membrane to react with the byproduct HCl generated during the interface process, thus generating nanobubbles that exist between the support layer and the separation layer. The surface of the membrane was characterized by related instruments. It was found that the addition of NH4HCO3 generates a large number of nanobubbles, causing significant changes to the membrane surface, and resulting in increased protrusions and pore size, greatly improving membrane flux while slightly reducing the rejection of sodium sulfate. |
| Note de contenu : |
- EXPERIMENTAL : Materials and chemicals - Membrane preparation - Characterization of membranes - Testing of separation performances
- RESULTS AND DISCUSSION : Influence of the NH 4 HCO 3 concentration - Optimization of reaction monomer - Optimization of TMC monomer - Optimization of PIP monomer
- Table 1 : Specific preparation parameters of TFN membrane |
| DOI : |
https://doi.org/10.1007/s11998-023-00834-y |
| En ligne : |
https://drive.google.com/file/d/1fSntPfrbgUJxHftnPQaEUd-NYC_LC0hS/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40462 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 1 (01/2024) . - p. 413-421
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