Micellar enhanced ultra-filtration (MEUF) is a modified ultrafiltration (UF) method that can remove small molecules that are not effectively removed by UF alone. In this work we used a similar semi-equilibrium dialysis (SED) method to characterize two anionic surfactants, sodium dodecyl sulfate (SDS) and sodium laurate (SOL), as MEUF candidates to remove several polycyclic aromatic hydrocarbon (PAH) compounds. These anionic surfactants have low toxicity and are more biodegradable compared to the fairly toxic and persistent cetyltrimethylammonium bromide (CTABr) and similar cationic surfactants, which is important as MEUF surfactants may be present in the treated effluent. The log binding constants (Log K_B) of the PAHs naphthalene, phenanthrene, pyrene and fluorene to SDS ranged from 3.07 to 4.48, which compared well with the previous results for CTABr and indicated that SDS is an excellent candidate for MEUF. The log binding constants for the same PAHs with SOL micelles ranged from 2.11 to 3.53, which suggested that SOL might be adequate for stronger-binding PAH like pyrene and fluorene but less suitable for naphthalene and phenanthrene. The results demonstrated a strong correlation between the Log K_B with one micelle type and the Log K_B with the other, suggesting a common set of properties and interactions are responsible for the binding. Similar to the previous results for CTABr, a significant correlation between Log K_B and Log K_OW values indicates that hydrophobic character is the main driving force for PAH binding with these anionic micelles. This may also be useful for predicting MEUF performance for various compound/surfactant combinations where Log K_B is not known.

胶束增强超滤（MEUF）是一种改进的超滤（UF）方法，可以去除仅靠UF无法有效去除的小分子。在这项工作中，我们使用了类似的半平衡渗析（SED）方法来表征两种阴离子表面活性剂，即十二烷基硫酸钠（SDS）和月桂酸钠（SOL），作为MEUF候选物，以去除几种多环芳烃（PAH）化合物。与相当毒性和持久性的十六烷基三甲基溴化铵（CTABr）和类似的阳离子表面活性剂相比，这些阴离子表面活性剂具有较低的毒性和更强的生物降解性，这很重要，因为在处理后的废水中可能存在MEUF表面活性剂。对数绑定常数（Log K _BPAHs的萘，菲，pyr和芴的SDS值范围为3.07至4.48，与CTABr的先前结果比较好，表明SDS是MEUF的极佳候选者。相同的PAH与SOL胶束的对数结合常数在2.11至3.53之间，这表明SOL可能适合强结合的PAH（如like和芴），但不适用于萘和菲。结果表明该日志之间存在强相关ķ_乙与一种胶束型和日志ķ_乙与其他，提示一组共同属性和相互作用负责的结合。与先前的CTABr结果相似，Log K _B之间存在显着相关性Log K _OW值表明疏水性是PAH与这些阴离子胶束结合的主要驱动力。这对于预测Log K _B未知的各种化合物/表面活性剂组合的MEUF性能也可能有用。