HIGHLY SELECTIVE ULTRATHIN POLYMER NANOFILM COMPOSITE MEMBRANE AND PROCESS FOR PREPARATION THEREOF

HIGHLY SELECTIVE ULTRATHIN POLYMER NANOFILM COMPOSITE MEMBRANE AND PROCESS FOR PREPARATION THEREOF

The present invention relates to highly selective ultrathin polymer nanofilm; its composite membrane; its method of preparation. Composite membranes are produced via interfacial polymerization with addition of surface active reagents (SLS) to aqueous phase of piperazine amine and reacted with trimes...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MODAK, Solagna, KARAN, Santanu, SARKAR, Pulak
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Zusammenfassung:The present invention relates to highly selective ultrathin polymer nanofilm; its composite membrane; its method of preparation. Composite membranes are produced via interfacial polymerization with addition of surface active reagents (SLS) to aqueous phase of piperazine amine and reacted with trimesoyl chloride. Fabricated ultrathin polymer nanofilm composite membrane gives high water permeance in range of 47.9-59.6 Lm−2h−1bar−1 with high rejection of Na2SO4 (91.77-98.47%); low rejection of MgCl2 (3.2-10.0%); NaCl (8.9-15.3%); high water permeance in range of 8.1-16.4 Lm−2h−1bar−1 with high rejection of Na2SO4 (99.81-99.99%); high rejection of MgCl2 (96.7-98.4%); NaCl (42.1-56.9%) when tested under 5 bar applied pressure at 25 (±1)° C. with 2 gL−1 feed. Ideal salt selectivity for NaCl/Na2SO4 is in range of 296.3-4310.