- 作者: 吳聯芳; 辜瑞金; 黃賢達
- 作者服務機構: Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 300
- 中文摘要: Foam separation techniques are evaluasted to determine if they would be feasible for removing cadmium(II) from waste water. Variables such as pH, ionic strength, collector concentration, and interfering ions were studied to determine their effects on separation. Sodium laury sulfate, sodium state, and hexadecyltrimethylammonium bromide were chosen as the collector; Fe(OH)3 and Al(OH)3 were used as the adsorbing colloid, and sodium, tripolyphosphate was used as modifer. It was found that cadmium could be effectively removed using various foam separation techniques. Cadmium levels were reduced from 5 ppm to 0.003 ppm in 60 minutes foaming with sodium laury sulfate. Foam separation of cadmium state with hexadecyltrimethyl-ammonium bromide was effective even at very high ionic strength, such as 1.0M NaNO3.
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