화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.29, 134-145, September, 2015
DOI10.1016/j.jiec.2015.03.025  Export Citation
Effective and highly recyclable nanosilica produced from the rice husk for effective removal of organic dyes
Gehan M.K. Tolba1, 2, Nasser A.M. Barakat1, 3, †, A.M. Bastaweesy2, E.A. Ashour2, Wael Abdelmoez2, Mohamed H. El-Newehy4, Salem S. Al-Deyab4, and Hak Yong Kim1, 5
  • 1Organic Materials and Fiber Engineering Department, Chonbuk National University, Jeonju 561-756, South Korea
  • 2Chemical Engineering Department, Faculty of Engineering, Minia University, El-Minia, Egypt
  • 3BioNanosystem Department, Chonbuk National University, Jeonju 561-756, South Korea
  • 4Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
  • 5, Korea
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Amorphous nanosilica separated from rice-husk at yield of 81% by hydrothermal technique is introduced as effective and reusable adsorbent for the organic pollutants. The prepared nanosilica is spheroid with a particle size of 10.50 nm. As adsorbent, the results indicated that the nanosilica could remove 65% from the methylene blue dye (10 ppm) within the first minute. The calculated thermodynamic parameters indicated that the adsorption of MB is spontaneous and endothermic. Interestingly, regeneration of the introduced material by caclination at 450 8C enhanced the adsorption process as the removing percentage was linearly depending on the number of the successive cycles.
Keywords:Hydrothermal process;Adsorption;Rice husk;Nanosilica;Sub-critical water
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