Quaternized diaminobutane/poly(vinyl alcohol) cross-linked membranes for acid recovery via diffusion dialysis

Ashraf, Muhammad Adnan and Islam, Atif and Butt, Muhammad Arif and Mannan, Hafiz Abdul and Khan, Rafi Ullah and Kamran, Kashif and Bashir, Shahid and Iqbal, Javed and Al-Ghamdi, Ahmed A. and Al-Sehemi, Abdullah G. (2021) Quaternized diaminobutane/poly(vinyl alcohol) cross-linked membranes for acid recovery via diffusion dialysis. Membranes, 11 (10). ISSN 2077-0375, DOI https://doi.org/10.3390/membranes11100786.

Full text not available from this repository.


Diffusion dialysis (DD) using anion exchange membranes (AEM) is an effective process for acid recovery and requires the preparation of suitable materials for AEMs, characterized by unique ions transport properties. In this work, novel AEMs composed of quaternized diaminobutane (QDAB) and poly(vinyl alcohol) (PVA) were cross-linked by tetraethoxysilane (TEOS) via the sol-gel process. The prepared AEMs were systematically characterized by Fourier-transform infrared (FTIR) spectroscopy, ion-exchange capacity (IEC) analysis, thermo gravimetric analysis (TGA), water uptake, linear expansion ratio (LER), and mechanical strength determination, scanning electron microscopy (SEM), and DD performance analysis for acid recovery using a hydrochloric acid/iron chloride (HCl/FeCl2) aqueous mixture and varying the QDAB content. The prepared AEMs exhibited IEC values between 0.86 and 1.46 mmol/g, water uptake values within 71.3 and 47.8%, moderate thermal stability, tensile strength values in the range of 26.1 to 41.7 MPa, and elongation from 68.2 to 204.6%. The dialysis coefficient values were between 0.0186 and 0.0295 m/h, whereas the separation factors range was 24.7-44.1 at 25 degrees C. The prepared membranes have great potential for acid recovery via diffusion dialysis.

Item Type: Article
Funders: King Khalid University[KKU/RCAMS/006/21]
Uncontrolled Keywords: Diffusion dialysis;PVA;TEOS cross-linked;Acid recovery;Anion exchange membrane
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science
Depositing User: Ms Zaharah Ramly
Date Deposited: 12 Sep 2022 02:17
Last Modified: 12 Sep 2022 02:17
URI: http://eprints.um.edu.my/id/eprint/34322

Actions (login required)

View Item View Item