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Efficient removal of some anionic dyes from aqueous solution using a polymer-coated magnetic nano-adsorbent

Kiani, A ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.2166/aqua.2017.029
  3. Abstract:
  4. For the efficient removal of some anionic dyes, a novel adsorbent was developed. The adsorbent was prepared by coating a synthetic polymer on magnetite nanosphere surface as a magnetic carrier. The synthesized nano-adsorbent was fully characterized using Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer, X-ray diffractometer, scanning electron microscope, and transmission electronic microscopy measurements. The synthesized nano-adsorbent showed high adsorption capacity towards removal of some anionic dyes (221.4, 201.6, and 135.3 mg g-1 for reactive red 195, reactive yellow 145, and reactive blue 19 dye, respectively) from aqueous samples. The dye adsorption was thoroughly studied from both kinetic and equilibrium points of view. It was found that the Langmuir isotherm showed a better correlation with the experimental data. The kinetic data showed that the process was very fast, and the adsorption process followed pseudo-second order kinetic models for the modified magnetic nano-adsorbent. Furthermore, the results showed that a stable and reusable (up to 20 cycles) nano-adsorbent for dye removal purposes was synthesized. © IWA Publishing 2017
  5. Keywords:
  6. Adsorption ; Anionic dyes ; Dye removal ; Magnetite nanospheres ; Polymeric adsorbent ; Dyes ; Fourier transform infrared spectroscopy ; Isotherms ; Kinetics ; Magnetism ; Magnetite ; Nanospheres ; Plastic coatings ; Polymers ; Scanning electron microscopy ; Solutions ; Stripping (dyes) ; Anionic dye ; Fourier transform infra red (FTIR) spectroscopy ; High adsorption capacity ; Pseudo-second-order kinetic models ; Transmission electronic microscopies ; Vibrating sample magnetometer ; Aqueous solution ; Coating ; Dye ; Experimental study ; FTIR spectroscopy ; Isotherm ; Nanoparticle ; Pollutant removal ; Polymer ; Reaction kinetics
  7. Source: Journal of Water Supply: Research and Technology - AQUA ; Volume 66, Issue 4 , 2017 , Pages 239-248 ; 00037214 (ISSN)
  8. URL: https://iwaponline.com/aqua/article-abstract/66/4/239/29348/Efficient-removal-of-some-anionic-dyes-from?redirectedFrom=PDF