화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.97, 460-465, May, 2021
DOI10.1016/j.jiec.2021.03.001  Export Citation
Enhancement of heavy metals recovery from aqueous solutions by cementation on a rotating cylinder using a stationary wiper
M.S. Ahmed1, T.M. Zewail1, E-S.Z. El-Ashtoukhy1, H.A. Farag1, I.H. El Azab2, 3, F.A. Albatati4, A.F. Al-Hossainy5, 6, M.Sh. Zoromba7, 8, and M.H. Abdel-Aziz7, 1, †
  • 1Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
  • 2Chemistry Department, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
  • 3Chemistry Department, Faculty of Science, Aswan University, Aswan, P.O. Box 81528, Aswan, Egypt
  • 4Mechanical Engineering Department, King Abdulaziz University, Rabigh 21911, Saudi Arabia
  • 5Chemistry Department, Faculty of Science, Northern Border University, 13211 Arar, Saudi Arabia
  • 6Chemistry Department, Faculty of Science, New Valley University, 72511, Al-Wadi Al-Gadid, Al-Kharga, Egypt
  • 7Chemical and Materials Engineering Department, King Abdulaziz University, Rabigh 21911, Saudi Arabia
  • 8Chemistry Department, Faculty of Science, Port-Said University, 23 December Street, 42521, Port-Said, Egypt
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The goal of the present research is to study the impact of a stationary wiper almost touching a revolving zinc solid cylinder on the rate of Cu+2 cementation. Initial Cu+2 ions concentration, speed of rotation, and the effect of the presence and absence of a wiper were investigated. The degree of Cu+2 cementation was stated in relation to the mass transfer coefficient which was valued under diverse circumstances. The present study showed that the mass transfer coefficient accelerates as rotation speed and quantity of Cu+2 increase. The presence of a wiper enhances the degree of Cu+2 cementation by an extent that varies from 1.59 to 64% subject to the operational circumstances. The present mass transfer data have been interrelated by dimensionless equations. The importance of such relationships in the sizing and running of rotating cylinders used for performing diffusion- restricted reactions is underlined.
Keywords:Cementation;Chemical reaction kinetics;Heavy metals;Wastewater
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