Abstract: Provided are a system and a method of treating wastewater. The system includes a forward osmosis (FO) liquid concentration apparatus and an electrodialysis (ED) apparatus. The FO liquid concentration apparatus increases the concentration of the salt in the wastewater to between 7% and 14%. The ED apparatus is disposed downstream of the FO liquid concentration apparatus and coupled to the FO liquid concentration apparatus to receive the wastewater introduced by the FO liquid concentration apparatus, and make the salt in the wastewater into an acid solution and a basic solution.

Abstract: An extracted material for forward osmosis is provided. The extracted material includes a first ionic compound, a second ionic compound and a third ionic compound, which are represented by formula {K[A+(R1)(R2)(R3)]p}(X?)c(Y?)d. X? is the same as Y? in the first ionic compound. X? is the same as Y? in the second ionic compound. X? in the first ionic compound is different from X? in the second ionic compound. X? differs from Y? in the third ionic compound. X? in the third ionic compound is the same as X? in the first ionic compound or X? in the second ionic compound. Y? in the third ionic compound is the same as Y? in the first ionic compound or Y? in the second ionic compound. A method for preparing an extracted material and a forward-osmosis water desalination system using the same are also provided.

Abstract: An ionic liquid and a forward osmosis process employing the same are provided. The ionic liquid has a structure represented by Formula (I) ABn??Formula (I), wherein A is n is 1 or 2; m is 0, or an integer from 1 to 7; R1 and R2 are independently methyl or ethyl; k is an integer from 3 to 8; B is i is independently 1, 2, or 3; and j is 5, 6, or 7. The forward osmosis process employing the ionic liquid is used to desalinate a brine via a forward osmosis (FO) model.

Abstract: An extracted material for forward osmosis is provided. The extracted material includes a first ionic compound, a second ionic compound and a third ionic compound, which are represented by formula {K[A+(R1)(R2)(R3)]p}(X?)c(Y?)d. X? is the same as Y? in the first ionic compound. X? is the same as Y? in the second ionic compound. X? in the first ionic compound is different from X? in the second ionic compound. X? differs from Y? in the third ionic compound. X? in the third ionic compound is the same as X? in the first ionic compound or X? in the second ionic compound. Y? in the third ionic compound is the same as Y? in the first ionic compound or Y? in the second ionic compound. A method for preparing an extracted material and a forward-osmosis water desalination system using the same are also provided.

Abstract: An ionic liquid and a forward osmosis process employing the same are provided. The ionic liquid has a structure represented by Formula (I) ABn ??Formula (I) , wherein A is n is 1 or 2; m is 0, or an integer from 1 to 7; R1 and R2 are independently methyl or ethyl; k is an integer from 3 to 8; B is i is independently 1, 2, or 3; and j is 5, 6, or 7. The forward osmosis process employing the ionic liquid is used to desalinate a brine via a forward osmosis (FO) model.