Design and Synthesis of Functionalized Magnetic Nanocomposites for Removal of Dye And Heavy Metal Ions from Water and Theoretical Study on Their Selectivity

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Abedin Moghanaki, Azardokht | 2016

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Type of Document: Ph.D. Dissertation
Language: Farsi
Document No: 49172 (03)
University: Sharif University of Technology
Department: Civil Engineering
Advisor(s): Pourjavadi, Ali
Abstract:
In this thesis, it reports the fabrication of novel magnetic nanocomposites combining the unique properties of magnetic nanoparticles and cross-linked basic polymers that their surface functionalized by suitable groups such as carboxylate groups, pentaethylenehexamine and so on to achieve the maximum adsorption capacity of dyes and heavy metal ions. The performance of the magnetic nanocomposites for removal of anionic and cationic dyes and heavy metal ions were evaluated in different conditions of pH, contact time and initial concentrations. Moreover, the adsorption mechanism was investigated by kinetic models and isotherm studies. The results showed that the abovementioned adsorbents can remove the dyes and metal ions from water, successfully. Suitable functional groups in the structure of the nanocomposites greatly enhanced the adsorbent capacity. Besides, the presence of magnetic nanoparticles in the structure of these adsorbents could facilitate their separation from the aqueous solution using the external magnetic field. Moreover, the magnetic property, improved the recyclability of these adsorbents
Keywords:
Polymeric Gels ; Heavy Metals ; Adsorbent ; Functionalization ; Dye ; Magnetic Nanocomposite ; Magnetic Nanodot

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