Write your message
Volume 17, Issue 2 (May 2023)                   IJT 2023, 17(2): 105-116 | Back to browse issues page

XML Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Karami S, Jiriaei Sharahi Z, Farahani S K, Solhi S, Hosseini S M. Novel Thin-film, Chitosan-polyaniline Nanofiltration Membrane Effectively Removes Toxic Heavy Metals From Wastewaters. IJT 2023; 17 (2) :105-116
URL: http://ijt.arakmu.ac.ir/article-1-1159-en.html
1- Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak, Iran.
2- Department of Forensic Medicine and Toxicology, School of Medicine, Arak University of Medical Sciences, Arak, Iran.
3- Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak, Iran. , s-hosseini@araku.ac.ir
Abstract:   (955 Views)
Background: Membrane technology for water purification has gained much attention in many industries and for healthier human life. Also, improving the elimination of toxic heavy metals is a much needed strategy for the filtration of public water supplies. This study investigated the removal of toxic heavy metals from wastewater, using a novel thin-film membrane.
Methods: We investigated the structural, physico-chemical, and antifouling properties of the membrane, and its ability to remove toxic elements from water. Seven parameters were examined: Contact angle, water ionic contents, Fourier’s transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), 3D-surface imaging, water flux, and antifouling effects.
Results: The results indicated that a thin-film layer formed on the membrane. The 3D-images demonstrated that the surface roughness decreased when the polyaniline ratio to nanoparticles increased. The surface hydrophilicity increased by incorporating polyaniline into the surface. The water flux increased from 8.04 (L/m2.h) to 14.74 (L/m2.h) in the virgin membrane. The sodium sulfate rejection was 61% for the virgin membrane whereas it was >67% in the thin-film coated membrane. The data demonstrated excellent anti-fouling properties for the novel membrane, with a flux recovery ratio of >94.65% while it was about 79% for the virgin one. The rejection rates of chromium and copper ions for the novel membrane were >86% and >84%, respectively. These values were significantly higher than those of the virgin membrane (>53% and >51%). 
Conclusion: The thin-film composite membrane significantly improved the removal rate of toxic heavy metals from the wastewater samples compared to the virgin membrane.
Full-Text [PDF 2379 kb]   (505 Downloads) |   |   Full-Text (HTML)  (149 Views)  
Type of Study: Research | Subject: Special

Add your comments about this article : Your username or Email:

Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2024 CC BY-NC 4.0 | Iranian Journal of Toxicology

Designed & Developed by : Yektaweb