Method for removing a pollutant from aqueous solution with a crosslinked polymer

A method for removing a pollutant from an aqueous solution, the method comprising:

• contacting the aqueous solution having an initial concentration of the pollutant with a crosslinked polymer to form a mixture;
• and
• filtering the mixture to obtain an aqueous solution having a reduced concentration of the pollutant compared to the initial concentration,
• wherein the crosslinked polymer comprises reacted units of
• a first monomer of formula (I)
• or a salt thereof, a solvate thereof, a tautomer thereof, a stereoisomer thereof, or a mixture thereof;
• and
• a second monomer of formula (II)
• or a salt thereof, a solvate thereof, a stereoisomer thereof, or a mixture thereof;
• wherein:
• R1, R3 and R4 are independently selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, an optionally substituted arylalkyl, and an optionally substituted aryl;
• R5, R6 and R7 are independently selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, an optionally substituted arylalkyl, a carboxy, a hydroxy, and a halogen;
• R8, R9, R10, R11, R12 and R13 are independently selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, an optionally substituted arylalkyl, and an optionally substituted aryl;
• and
• x, y, and z are independently an integer in a range of 1 to 6.