Abstract: 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 gasaphrons (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%.

Key words: separation, colloidal gas aphrons, flotation, surfactant

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 gasaphrons (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%.

关键词: 胶态气体;分离技术;浮选技术;表面活性剂