Novel electrodialysis cation exchange membrane prepared by 2-acrylamido-2-methylpropane sulfonic acid; heavy metal ions removal

Journal of Hazardous Materials
M NematiM Shabanian

Abstract

In the present work a novel heterogeneous cation exchange membrane (CEM) composed of poly vinyl chloride (PVC) and 2-acrylamido-2-methylpropane sulfonic acid based hydrogel (AMAH) was prepared. The membranes were fabricated with different fractions of AMAH to optimize the performance in desalination. The hydrogel was characterized by FT-IR to prove the successful synthesis. The membrane properties such as permselectivity, ionic permeability, flux, water content, electrical resistance, morphology, contact angle and dimensional stability were evaluated. Modified membranes showed acceptable dimensional stabilities, more hydrophilic surface, higher water content and porosity. SEM images revealed the formation of a more porous membrane structure. Membrane permselectivity and transport number showed a relatively constant then decreasing trend in Na+ and Ba2+ solutions. The experimental results showed that the incorporation of AMAH into the PVC matrix obviously improved ionic permeability and flux of Na (∼9%) and Ba (∼23%). Membrane electrical resistance was declined about 36% by adding AMAH in the membrane structure. Membranes' performance in potassium and heavy metal ions removal showed a remarkable separation capacity of K+ (99.9%)...Continue Reading

Citations

Jan 4, 2019·Chemical Society Reviews·Sreenath BolisettyRaffaele Mezzenga
Apr 17, 2019·Environmental Science and Pollution Research International·Elizabeth Carvajal-Flórez, Santiago-Alonso Cardona-Gallo
Jun 4, 2020·Membranes·Fangmeng ShengTongwen Xu
Feb 20, 2021·Water Environment Research : a Research Publication of the Water Environment Federation·Vahideh AfrazMohammad Rasoul Hadiani
Mar 19, 2021·Journal of Environmental Management·Morteza NazaripourAlireza Bazargan
Aug 29, 2020·ACS Applied Materials & Interfaces·Chunmei WangChang Liu
Dec 25, 2021·The Science of the Total Environment·A SaravananD Rebekah Angelina Devakirubai

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