Removal of nonionic surfactant by systems based on polystyrene–polyoxyethylene block copolymers

摘要

AbstractThree polystyrene (PS)–polyoxyethylene (POE) block copolymers were synthesized: S‐114 and S‐123 as copolymers of POE–PS–POE type, and S‐61‐10 as that oftype. Although the copolymers themselves did not remove nonionic surfactant, polyethylene glycol mono‐p‐nonylphenyl ether (NP,n= 10), in water, the copolymers, which were supported on activated alumina, removed the surfactant. The removal rates of NP by the copolymers supported on the alumina were compared. The effect of initial concentration of NP and the effect of the amount of supported copolymer on the amount of NP removed were studied. The Freuindlich adsorption isotherm was observed between the residual concentration of NP and the amount of NP removed. In the three copolymers supported on the alumina, the amount of removal per unit mass was the greates