摘要
This paper presents a method of separation of fine particles, of the order of a few microns or less, from aqueous media by flotation using colloidal gas aphrons (CGAs) generated in aqueous solutions. More than 150 experiments were conducted to study the effects of surfactant type, surfactant concentration, CGAs flow rate, and particle concentration on the removal efficiency (fine particles of polystyrene were used as a target compound). The results indicate that CGAs, generated from cationic surfactant of hexdecyltrimethyl ammonicum bromide (HTAB) and anionic surfactant of sodium dodecylbenzne sulfonate (SDBS), are an effective method for the separation off ine particles of polystyrene from wastewater. The flotation yields are higher than 97%.
This paper presents a method of separation of fine particles, of the order ofa few microns or less, from aqueous media by flotation using colloidal gas aphrons (CGAs) generatedin aqueous solutions. More than 150 experiments were conducted to study the effects of surfactanttype, surfactant concentration, CGAs flow rate, and particle concentration on the removal efficiency(fine particles of polystyrene were used as a target compound). The results indicate that CGAs,generated from cationic surfactant of hexdecyltrimethyl ammonicum bromide (HTAB) and anionicsurfactant of sodium dodecylbenzne sulfonate (SDBS), are an effective method for the separation offine particles of polystyrene from wastewater. The flotation yields are higher than 97%.
基金
Supported by the National Natural Science Foundation of China (No. 29836130, No. 29676021).
