Synthesis and characterization of surface-modified PVC/NanoClay/Tween60 as a super hydrophilic membrane: application in the nanofiltration of organic dyes from aqueous solution

Autor: Abbas Rajabi Abhari, Behrooz Jannat, Fatemeh Mahdavi Abhari, Samaneh Farrokhzadeh, Zahra Mahmoodi
Rok vydání: 2021
Předmět:
Zdroj: Polymer Bulletin. 79:8309-8331
ISSN: 1436-2449
0170-0839
Popis: PVC membrane was synthesized and its hydrophobicity was investigated by dehydrochlorination in alkaline condition, the addition of tween 60 surfactant and nanoclay. The synthesized membranes were analyzed using the contact angle, FTIR, FE-SEM, EDX, TGA and AFM techniques. High density of membranes was shown by FESEM images. Furthermore, the analysis of AFM revealed that dehydrochlorination can be caused to decrease surface roughness from 117 to 74.9 nm. However, the addition of Tween 60 and nanoclay to membrane increased surface roughness. Results showed that the PVC membrane with pore size of 100 nm is a nanofiltration membrane. The flux of initial membrane was 0.036 mL cm−2 s−1 which increased to 0.058 mL cm−2 s−1 in PVC/nanoClay/Tween 60 membranes. The performance of PVC/nanoClay/Tween 60 membrane was studied in Dead-End membrane systems for removal of BO2 from aqueous solution. Based on the results, dye removal efficiency was 90% under the conditions of 4 bar pressure, room temperature, 20 mg L−1 BO2 concentration, neutral pH and time of 1 h.
Databáze: OpenAIRE
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