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أحمد عبد الله أحمد على الشافعي

Professor

أستاذ هندسة نظم المياه والري

كلية علوم الأغذية والزراعة
مبنى 2 - الدور 2 - مكتب رقم : 2أ 45
المنشورات
مقال فى مجلة
2019
تم النشر فى:

DESALINATION USING MODIFIED CONFIGURATION OF SUPPORTED LIQUID MEMBRANE WITH ENHANCEMENT OF MASS TRANSFER OF NaCl

Moneer, M.M. Naim, M.M. Elewa, A.A. El-Shafei, A.A. . 2019

 

Supported liquid membranes (SLM) suffer from very slow mass transfer of the solute from the donor phase (DP) to the receptor phase (RP) through the liquid membrane (LM). In the present work, an attempt was made to accelerate the mass transfer in SLM by creating a modified configuration in which the DP and RP are made to flow either co- or counter-currently to each other. Variables, which could affect the removal of NaCl, were the volume ratio of DP to RP, type and quantity of sequestering agent (SA), presence of mobile carrier (MC), type of LM, and flow rate of DP and RP. The results showed that the higher the flow rate of DP and RP, the higher the mass transfer of NaCl. Quantity and type of SA and type of LM were prime important factors. Remarkably, the time required for transfer of NaCl from DP to RP was reduced from several hours in the case of stagnant SLM to several minutes in the present work. The mass transfer of NaCl was analysed based on kinetic laws of two consecutive irreversible first-order reactions. The values achieved establish the process is diffusion controlled, and the membrane entrance rate constants increase directly with initial concentration (Ci) and inversely with quantity of SA.

Keywords: desalination, mobile carrier, sequestering agent, supported liquid membrane

 

نوع عمل المنشور
ورقة بحثية
رقم المجلد
79
رقم الانشاء
1
مجلة/صحيفة
Water Science & Technology
الصفحات
175-187
مزيد من المنشورات
publications

An innovative polymeric membrane has been invented, which presents a breakthrough in the field of desalination membranes. It can desalinate simulated seawater of exceptionally high concentration…

بواسطة M.M. Naim, M.M. Elewa, A.A. El-Shafei, A.A. Moneer
2015
publications

Many industries, such as tanning, metal processing, electroplating, etc., include copper in their processes and discharge it in wastewater streams. The permissible limit of copper in wastewater is…

بواسطة A.A. Moneer, A.A. El-Shafei, M.M. Elewa, M.M. Naim
2016
publications

Silver nanoparticles (Ag-NPs) play an important role in the electronic industry, whereas, Zerovalent
iron (ZVI) has been widely investigated for environmental remediation due to its fairly…

بواسطة M.M. Naim, A.A. El-Shafei, M.M. Elewa, A.A. Moneer
2017