Composite reverse osmosis membrane, a water filtration system and a method of manufacturing same
A reverse osmosis membrane and a method for producing the composite reverse osmosis membrane are provided. The reverse osmosis membrane includes a first layer including a polyamide compound, and a second layer including acacia gum. The method includes steps of providing a trimesoyl chloride solution; adding acacia gum to the trimesoyl to form an organic solution; adding the organic solution to an m-phenylenediamine solution to form a mixture; and heating the mixture and rinsing the mixture.
1. A reverse osmosis membrane, comprising:
a layer including a polyamide compound and acacia gum.
2. The reverse osmosis membrane according to claim 1 , wherein the polyamide compound is derived from polymerization of m-phenylenediamine and trimesoyl chloride.
3. The reverse osmosis membrane according to claim 1 , wherein a concentration of the acacia gum is from 0.01 wt. % to 0.2 wt. %.
4. The reverse osmosis membrane according to claim 1 , wherein the acacia gum includes high molecular weight polysaccharides.
5. The reverse osmosis membrane according to claim 1 , wherein a total porosity of the reverse osmosis membrane is more than 35% when a concentration of the acacia gum is 0.07 wt. %.
6. The reverse osmosis membrane according to claim 1 , wherein a water contact angle of the reverse osmosis membrane is lower than 40 degrees when a concentration of the acacia gum is 0.07 wt. %.
7. The reverse osmosis membrane according to claim 1 , wherein a pure water permeability of the reverse osmosis membrane is more than 1.2 LMH/bar when a concentration of the acacia gum is 0.07 wt. %.
8. The reverse osmosis membrane according to claim 1 , wherein a salt rejection of 2000 ppm sodium chloride solution of the reverse osmosis membrane is more than 90% when a concentration of the acacia gum is 0.07 wt. %.
9. A water filtration system, comprising:
a water filter including a reverse osmosis membrane,
wherein the reverse osmosis membrane includes a layer including a polyamide compound and a second layer including acacia gum.
10. The water filtration system according to claim 9 , wherein the polyamide compound is derived from polymerization of m-phenylenediamine and trimesoyl chloride.
11. The water filtration system according to claim 9 , wherein a concentration of the acacia gum is from 0.01 wt. % to 0.2 wt. %.
12. The water filtration system according to claim 9 , wherein the acacia gum includes high molecular weight polysaccharides.
13. The water filtration system according to claim 9 , wherein a total porosity of the reverse osmosis membrane is more than 35% when a concentration of the acacia gum is 0.07 wt. %.
14. The water filtration system according to claim 9 , wherein a water contact angle of the reverse osmosis membrane is lower than 40 degrees when a concentration of the acacia gum is 0.07 wt. %.
15. The water filtration system according to claim 9 , wherein a pure water permeability of the reverse osmosis membrane is more than 1.2 LMH/bar when a concentration of the acacia gum is 0.07 wt. %.
16. The water filtration system according to claim 9 , wherein a salt rejection of 2000 ppm sodium chloride solution of the reverse osmosis membrane is more than 99% when a concentration of the acacia gum is 0.07 wt. %.