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研究了25℃时Triton X-100(TX100),溴化十四烷基三甲铵(TTAB)和十二烷基硫酸钠(SDS)自其单组份水溶液及自TX100-SDS和TX100-TTAB混合水溶液在活性炭上的吸附。结果表明,三种表面活性剂自其单组份水溶液在活性炭上的吸附等温线均为Langmuir型;吸附能力以mol·g~(-1)为单位时的顺序为SDS>TTAB>TX100;在混合体系中,由于吸附质对吸附剂的竞争以及溶液体相中形成临界胶团浓度较小的混合胶团,使得离子型和非离子型表面活性剂的吸附相互抑制;混合体系中相应吸附量的关系是线性的。
Triton X-100 (TX100), tetradecyltrimethylammonium bromide (TTAB) and sodium dodecyl sulfate (SDS) were investigated at 25 ° C. from their single component aqueous solutions and from TX100-SDS and TX100-TTAB Adsorption of aqueous solution on activated carbon. The results showed that the adsorption isotherms of the three surfactants from the single component aqueous solution on activated carbon were all Langmuir type. The order of adsorption capacity in mol · g ~ (-1) was SDS> TTAB> TX100. In the mixed system, the adsorption of ionic and non-ionic surfactants is inhibited due to the competition of adsorbents and sorbents and the formation of mixed micelles with small critical micelle concentration in solution phase. The corresponding adsorption capacity The relationship is linear.