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- Title
Performance and stability of diaminotoluene-based polyamide composite reverse osmosis membranes incorporated with additives and cast on polyester fabric.
- Authors
Said, Mohamed; Ebrahim, Shaker; Gad, Ali; Kandil, Sherif
- Abstract
This work aims to enhance the performance of polyamide (PA) thin-film composite (TFC) reverse osmosis membranes prepared by the interfacial polymerization of 2,6-diaminotoluene and trimethyl chloride on polysulfone support membrane. The effect of incorporation of triethylamine, isopropyl alcohol and camphor sulfonic acid in the aqueous phase solution on the casted TFC membrane on non-woven polyester was investigated. The prepared membranes were characterized by X-ray diffraction, scanning electron microscopy and contact angle measurements. The results showed that the permeability and desalination stability of the PA membranes were remarkably enhanced. The membrane water flux was increased to 25.3 L/m² h in 10 g/L NaCl feed solution at 18 bar, while the salt rejection was 99.46%. For feed aqueous solution containing 35 g/L NaCl, the membrane has exhibited a salt rejection of 98.45% and the water flux has increased to 17.1 L/m² h at 35 bar. The desalination stability has remarkably enhanced and the membrane could withstand high operating pressures without permeate more salts. In addition, the energy consumed by PA-TFC membrane was reduced to 1.13 kWh/m3.
- Subjects
REVERSE osmosis; POLYAMIDES; POLYESTER fibers; COMPOSITE membranes (Chemistry); POLYESTERS; CONTACT angle; SULFONIC acids
- Publication
Desalination & Water Treatment, 2017, Vol 86, p115
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2017.21346