Synthesis and characterization of cellulose based adsorbents for removal of Ni(II), Cu(II) and Pb(II) ions from aqueous solutions
| Autor: | Rajeev Kr. Sharma, Rajesh Kumar |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Aqueous solution
Polymers and Plastics General Chemical Engineering Comonomer Metal ions in aqueous solution Langmuir adsorption model Sorption 02 engineering and technology General Chemistry 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry chemistry.chemical_compound symbols.namesake Adsorption chemistry Polymerization Materials Chemistry symbols Environmental Chemistry Cellulose 0210 nano-technology 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | Reactive and Functional Polymers. 140:82-92 |
| ISSN: | 1381-5148 |
| DOI: | 10.1016/j.reactfunctpolym.2019.04.014 |
| Popis: | Functional copolymers were prepared by graft polymerization of the cellulose extracted from agricultural residue rice husk thus represent a class of highly efficient, eco-friendly and biodegradable adsorbents for water purification applications. Functionalized grafted copolymers of cellulose with N-isopropylacrylamide (NIPAM) and comonomer acrylic acid (AAc) were synthesized by free radical grafting. To ascertain the grafting, cellulose and its graft copolymers were analyzed through various characterizations techniques such as FESEM, XRD, FTIR, TGA/DTA/DTG and swelling properties. Sorption of Ni(II), Cu(II) and Pb(II) metal ions was studied as a function of time, temperature, pH and concentration of metal ions in solution. The order for metal ions uptake was Cell-g-NIPAM-co-AAc > Cell-g-NIPAM > ungrafted cellulose. The metal ions sorption was best fitted in the pseudo-second-order kinetic model and Langmuir adsorption isotherm model. At the optimized conditions, almost complete sorption of Pb(II) ions was observed for Cell-g-NIPAM-co-AAc copolymer, whereas 74.5% of Ni(II) and 77.5% of the Cu(II) metal ions were sorbed by Cell-g-NIPAM-co-AAc copolymer. |
| Databáze: | OpenAIRE |
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