Investigating the Parameters of Reverse Osmosis by Polydioxanone Membrane and Comsol Software

Document Type : Research Article

Authors

1 Faculty of Engineering, Department of Chemical Engineering, Islamic Azad University, Omidiyeh, I.R. IRAN

2 Energy Engineering Division, Department of Energy Science and Mathematics, Lulea University of Technology, Lulea, Norrbotten County, Sweden

Abstract

Reverse Osmosis is one of the membrane processes used to desalinate salt water, remove natural organic compounds, certain contaminants and water softening. One of the most important problems with this type of membrane is the polarization of the concentration and deposition in them, which reduces the product flux and increases the passage of salt through the membrane and also increases the pressure drop. It is important to choose the proper type of membrane to meet the needs associated with the Reverse Osmosis separation process. In this study, Polydioxanone polymer (12%) was used to make the Reverse Osmosis membrane. Also, the phenomenon of mass transfer in the Reverse Osmosis condensation process of the mathematical model based on the separation of water-glucose solution was considered. Considering the surface structure of the membrane, the irreversible thermodynamic model of Spiegler-Kedem was selected to investigate the mass transfer inside the membrane, and the concentration polarization model was assumed to be one-dimensional flow to investigate the mass transfer outside the membrane. The current is assumed to be constant and compressible with constant properties. The results of this study show a decrease in the amount of pure water flux along the membrane due to accumulation of salts and pressure drop and increase in the width of the membrane with increasing pressure and feed concentration. The results obtained from the distribution of glucose concentration in the water show that increasing the applied pressure difference leading to increases the polarization of the concentration on the membrane surface, which should mainly reduce the product flux. But due to the membrane structure, increasing the pressure leads to an increase in the product flux.

Keywords

Main Subjects

References

[1] ضامن م.، رضاخانی ن.، رجبی م.، زینالی دانالو م.ع.ا.، ارزیابی عملکرد سامانه ترکیبی آب گرم‌کن/آب شیرین‌کن خورشیدی خانگی، نشریه شیمی و مهندسی شیمی ایران، (3)34: 91 تا 102 (1394).
[2] بیگمرادی ر.، صمیمی ع.ر.، محبی کلهری د.، مروری کوتاه بر غشاهای مرکب دارای نانولوله‌کربنی مورد استفاده در فرایند آب به ویژه نمک‌زدایی، نشریه شیمی و مهندسی شیمی ایران، (3)40: 1 تا 22 (1400).
[3] Murray-Gulde C., Heatley J.E., Karanfil T., Rodgers Jr.J.H., Myers J.E., Performance of a Hybrid Reverse Osmosisconstructed Wetland Treatment System for Brackish Oil Field, Produced Water, Water Research, 37: 705–713 (2001).
[4] Field R.W., Wu D., Howell J.A., Gupta B.B., Critical Flux Concept for Microfiltration Fouling, J. Membr. Sci., 100: 259–272 (1995).
[5] Dubois M., Gilles K.A., Hamilton J.K., Rebers P.A., Smith F., Colorimetric Method for Determination of Sugars and Related Substances, Anal. Chem., 28: 350–356 (1956).
[6] مرادی ع.،"تعیین منحنی‌های عملکرد غشاهای اسمز معکوس با استفاده ازمدل MD-SF-PF"، پایان‌نامه کارشناسی ارشد، دانشگاه تربیت مدرس، بخش مهندسی شیمی (1371).
[7] Spiegler K.S., Kedem,O., Thermodynamic of Hyperfiltration (Reverse Osmosis): Criteria for Efficient Membranes, Desalination, 1: 311-326 (1966).
[8] Murthy Z.V.P., Chaudhari L.B., Separation of Binary Heavy Metals from Aqueous Solutions by Nanofiltration and Characterization of the Membrane using Spiegler–Kedem Model, Chem. Eng. J., 150: 181–187 (2009).
[9] Ahmad A.L., Chong M.F., Bhatia S., Mathematical Modeling of Multiple Solutes System for Reverse Osmosis Process in Palm Oil Mill E Uent (POME) Treatment, Chem. Eng. J., 132: 183–193 (2007).
[10] Al-Bastaki N., Removal of Methyl Orange Dye and Na2SO4 Salt from Synthetic Waste Water using Reverse Osmosis, Chem. Eng. Process. Process Intensif., 43: 1561–1567 (2004).
Nashrieh Shimi va Mohandesi Shimi Iran
Volume 41, Issue 4 - Serial Number 106
December 2022
Pages 253-267

Files

Share

How to cite

Statistics