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第 37卷第 2期应用化工 Vol. 37 No. 2
2008年 2月 App lied Chem ical Industry Feb. 2008
茶皂素与十二烷基硫酸钠复配体系浮选
去除废水中金属离子的研究
彭艳春,袁兴中,曾光明,刘佳
2 2 (湖南大学环境科学与工程学院,湖南长沙 410082)
摘要:研究了非离子生物表面活性剂茶皂素( TS)和阴离子表面活性剂十二烷基硫酸钠( SDS)复配体系的表面活
性及无机盐的影响、浮选去除废水中铜离子的处理效果。结果表明,当 TS与 SDS的混合比例为 0. 2 ∶1~0. 3 ∶1时,
复配体系的表面张力和临界胶束浓度均降至最低,起泡性和稳泡性均比较稳定;无机盐主要对溶液中的 SDS表面
活性产生影响,茶皂素性质比较稳定,基本不受影响。采用 TS∶SDS = 0. 25 ∶1的复配体系进行浮选,溶液中铜离子
的去除效率可以达到 92%。
关键词:茶皂素;十二烷基硫酸钠;复配;表面活性;浮选
中图分类号: X 703. 1 文献标识码: A 文章编号: 1671 - 3206 (2008) 02 - 0125 - 04
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Research of removing metal ions from wastewater with m ixed
tea sapon in and sodium lauryl sulfate by flotation
PEN G Yan chun, YUAN X ing zhong, ZENG Guang m ing, L IU J ia
(Department of Environmental Science and Engineering, Hunan University, Changsha 410082, China)
Abstract: The surface activity of p lex m ixed by nonionic biosurfactant ( TS) and anionic surfac
tant ( SDS) , and the influence of anic salts on p lex were investigated. Basing on
p lex, the flotation effect on copper removal from wastewater was also studied. W hen the mole ratio of
TS/SDS was between 0. 2 and 0. 3, it was found that the surface tension and critical m icelle concentration
(CM C) both were the lowest; foamability and stability of foam were stable. anic salt had a major im
pact on surface activity of SDS but little on tea saponin’s since i