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Removal of Hexavalent Chromium(VI) from Wastewater Using Chitosan-Coated Iron Oxide Nanocomposite Membranes.
- Source :
- Toxics; Feb2022, Vol. 10 Issue 2, pN.PAG-N.PAG, 1p
- Publication Year :
- 2022
-
Abstract
- Chromium is a toxic and carcinogenic heavy metal that originates from various human activities. Therefore, the effective removal of chromium from aqueous solutions is an extremely important global challenge. Herein, we report a chitosan-coated iron oxide nanoparticle immobilized hydrophilic poly(vinylidene) fluoride membrane (Chi@Fe<subscript>2</subscript>O<subscript>3</subscript>–PVDF) which can potentially be used for efficient removal of hexavalent chromium(VI) by a simple filtration process. Membrane filtration is an easy and efficient method for treating large volumes of water in a short duration. The adsorption experiments were conducted by batch and continuous in-flow systems. The experimental data showed rapid capture of hexavalent chromium (Cr(VI)) which can be explained by the pseudo-second-order kinetic and Langmuir isotherm model. The nanocomposite membrane exhibited high adsorption capacity for Cr(VI) (14.451 mg/g in batch system, 14.104 mg/g in continuous in-flow system). Moreover, its removal efficiency was not changed significantly in the presence of several competing ions, i.e., Cl<superscript>−</superscript>, NO<subscript>3</subscript><superscript>−</superscript>, SO<subscript>4</subscript><superscript>2−</superscript>, and PO<subscript>4</subscript><superscript>3−</superscript>. Consequently, the Chi@Fe<subscript>2</subscript>O<subscript>3</subscript>-PVDF-based filtration process is expected to show a promising direction and be developed as a practical method for wastewater treatment. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 23056304
- Volume :
- 10
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Toxics
- Publication Type :
- Academic Journal
- Accession number :
- 155569253
- Full Text :
- https://doi.org/10.3390/toxics10020098