Performance Of Novel Draw Solutions In Brackish Water Desalination Using Forward Osmosis

T. M. Zewail ； Abdulaziz A. Alturki ； M.A. Dawod ； S. M. Abd Elrazik ； S. E. Elalfy ； M. A. Saad ； El-Sh. Ibrahim ； E-S. Z. El-Ashtoukhy ； M. H. Abdel-Aziz

《淡江理工學刊》 26卷6期 (2023/06) Pp. 813-820

https://doi.org/10.6180/jase.202306_26(6).0007

摘要

The main goal of the present study is to examine the performance of novel draw solutions to extract high-quality water from simulated brackish water. Three different types of draw solutions namely L-ascorbic acid, L-aspartic acid, and thiourea. The current draw solutions' performance was measured in terms of average water flux (LMH) and average reverse solute flux (g/m^2h). The impact of several parameters on FO desalination performance, such as draw solution type, feed water concentration, draw solution concentration, and membrane orientation mode, was investigated. Ascorbic acid (vitamin C) was shown to have better FO performance in terms of high water flow up to 7.5 LMH and negligible reverse solute flux among the various types of draw solutions studied. The suggested FO technique can extract clean water to dilute the vitamin C draw solution up to the daily vitamin C in drinking water dose limit. Immune system deficits, cardiovascular illness, maternal health difficulties, eye disease, and even skin wrinkling may be protected by the supplemented vitamin C drinking water created. Some specialists recently recommended taking 200 mg of vitamin C daily for COVID-19 prophylaxis or 1-2 grams for COVID-19 treatment, according to some experts.

關鍵字

Forward osmosis ； Desalination ； Brackish water ； Draw solutions ； Membrane technology