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Abstract:
The spherical polyacrylonitrile beads were prepared via phase inversion method usting DMF as solvent and dispersant solution as non-solvent and waste polyacrylonitrile fibre as raw material. Then the spherical PAN beads were used to prepare a multifunctional spherical chelation adsorbent, denoted as SPDA, under microwave assistant conditions. Besides, the physical and chemical properties were also studied. The results indicated SPDA contained amide and imidazolyl groups. And the optimum modified conditions included 7:1 of the mass ratio of monomer and beads, 14:100 of the mass ratio of catalyst and beads, 7:5 of the mass ratio of EG and beads, 640W of the microwave power and 5mins of the radiation time. Additionally, study was also conducted regarding the adsorption of Cr(VI) on SPDA by static adsorption experiments. The removal percentage and equilibrium adsorption capacity of SPDA could reach 96.2% and 38.5mg/g under such conditions as 4 of the solution pH, 120mg/L of Cr(VI) concentration, 2h of the adsorption time and 30°C of the adsorption temperature.
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Journal of Functional Materials
ISSN: 1001-9731
CN: 50-1099/TH
Year: 2013
Issue: 21
Volume: 44
Page: 3199-3203
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 1
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