Abstract
Cellulose acetate-tin(IV) molybdophosphate (CATMP) composite exchanger was prepared by mixing biopolymer celluloseacetate with its inorganic counterpart tin(IV) molybdophosphate (TMP) using sol‑gel method. The physical characterization of the as synthesized exchanger was carried out by FTIR, XRD, BET, TGA-DTG and SEM-EDX techniques. Chemical properties such as ion exchange capacity, chemical stability, pH and distribution behavior were carried out. The average IEC of the composite material, as determined by batch equilibrium, was found to be 2.43 meq/g for Na+ ion; higher than its inorganic counterpart, i.e. 1.41 meq/g. This exchanger was also found to be stable in water, acids and organic solvents, but unstable in basic medium. The distribution study (Kd) of the exchanger in different solvent systems showed promising separation potential of the exchanger towards metal ions of analytical interest from a given mixture of toxic heavy metal ions. The sorption studies revealed that the material was selective for Cr(III) and Cd(II) ions and moderately selective for Co(II) ion in solvents employed in this work. Its selectivity was examined by achieving some important binary separations of metal cations on its column indicating its promising application in environmental pollution abatement.
 
 KEY WORDS: Cation exchanger, Biopolymer, Organic-inorganic hybrid, Sol–gel method, Binary distribution
 
 Bull. Chem. Soc. Ethiop. 2020, 34(2), 259-276
 DOI: https://dx.doi.org/10.4314/bcse.v34i2.5
Highlights
Clean water scarcity is a global challenge that has been intensified with growing economies, increasing population, agricultural expansion, urbanization, and climatic change [1]
Cellulose acetate-Sn(IV) molybdophosphate cation exchanger was prepared by sol-gel method from the organic part cellulose acetate and inorganic part tin(IV) molybdophosphate
Cellulose acetate-Sn(IV) molybdophosphate cation exchanger nanocomposite was synthesized by a sol-gel approach and characterized by using different instrumental techniques
Summary
Clean water scarcity is a global challenge that has been intensified with growing economies, increasing population, agricultural expansion, urbanization, and climatic change [1]. This has contributed to the spread of water scarcity worldwide. Various techniques have been employed for removing heavy metals from wastewater including filtration, chemical precipitation, coagulation, solvent extraction, electrolysis, ion exchange, membrane process and adsorption [6]. Ion exchange is the most common and effective process, when compared with other processes, for removal of heavy metals from drinking water and wastewater even at very low concentrations. Ion exchange is most successful technique in separation of ionic species from a complex mixture [7, 8]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
