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الأربعاء، 5 نوفمبر، 2014

Study of the Performance characteristics of a Stirred Tank Reactor Suitable for Diffusion Controlled Liquid-Solid Catalytic Reactions

Title: Study of the Performance characteristics of a Stirred Tank Reactor Suitable for Diffusion Controlled Liquid-Solid Catalytic Reactions
Author        : Mahmoud Mohamed Taha Moharam
Collection   : M.Sc.Chemistry 
Abstract:
  The aim of the present work is to develop high space-time liquid-solid batch stirred tank reactor suitable for conducting diffusion controlled liquid-solid catalytic and electrochemical reactions.
  To this end single and multi-layers of wire screens lining the wall of a square stirred tank were used as a reaction surface in view of their high specific area and turbulence promoting ability. The performance of the reactor is evaluated by measuring the rate of liquid-solid mass transfer at the screen surface using the electrochemical technique.
 The proposed reactor was used for removing heavy metals from wastewater solutions.
 Variable studied were:
1)  Impeller rotational speed
2)  Impeller geometry[45o pitched blade turbine (axial flow impeller) and 90o flat blade turbine (radial flow impeller)
(3 Geometrical parameters of the screen such as mesh number and wire diameter
(4 Physical properties of the solution ( ρ, μ and Ɗ)
(5 Number of closely packed screens forming the reactions surface

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