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Single and mixed surfactants on the solubilization of polycyclic aromatic hydrocarbons

Author: LiuJingRui
Tutor: HuangGuoHe
School: North China Electric Power University (Beijing)
Course: Environmental Engineering
Keywords: PAHs Gemini Surfactant Surfactant mixture Synergistic effect solubilization
CLC: X53
Type: Master's thesis
Year: 2011
Downloads: 130
Quote: 3
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Abstract


This paper summarizes the tables surfactant solubilization Research. Focused on the mechanism of solubilization and solubilization describe methods and influencing factors, mixed surfactant complex principles and types , as well as synergistic surfactant remediation technology in the repair of polycyclic aromatic hydrocarbons (PAHs) contamination in. Studied gemini surfactants CG12-2-12 and the general non -ionic surfactant TX-100, Tween80, Brij35 single and mixed systems of phenanthrene and pyrene solubilization , through the critical micelle concentration (CMC), the molar solubilization rate (MSR) and micelle - water phase partition coefficient (Kmc) calculation and comparison , evaluation of single and mixed surfactant system of phenanthrene and pyrene solubilization capacity . The results show that the hybrid system solubilization capacity greater than each single surfactant system , showing a synergistic effect solubilization . And CG12-2-12/TritonX-100, CG12-2-12/Brij35, CG12-2-12/Tween80 mixed surfactant system of the synergies of pyrene solubilization capacity greater than the Philippines , and polycyclic aromatic hydrocarbons (PAHs) hydrophobic demonstrated a positive correlation properties . From the interaction parameter β, CMCexp with CMCideal ratio B, and the ratio of R MSRexp with MSRideal the angle of the interaction between mixed system . Observational study of naphthalene or pyrene coexist , CG12-2-12 and Brij35 surfactant mixed system of single and solubilization of phenanthrene effects . The results show that the CG12-2-12 surfactant , phenanthrene and pyrene competition showed the coexistence influence , while in other PAHs and mixed surfactant systems, co- PAHs are to some extent exhibit synergistic influence on . And CG12-2-12/Brij35 mixed surfactant system synergistic effect is greater than the single surfactant system . From the molar ratio of inorganic electrolytes , and temperature , etc., analyzed and studied CG12-2-12/Brij35 mixed surfactant system of phenanthrene solubilization factor. The results show that the surfactant is 1:9 CG12-2-12 , and the optimum mixing ratio of Brij35 in this ratio , the mixed system showed a better synergistic effect solubilization . Inorganic electrolytes solubilization of phenanthrene by a certain degree of influence, and cationic electrolytes order : Mg2 gt; Ca2 gt; K gt; Na. Temperature increased, significantly increasing the surfactant system of phenanthrene solubilization capacity .

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