liquid isotherm
1.Effects of ozone treatment on structure of surface functional groups,pore structure and Cr~(6+) adsorption capacity of(activated) carbon were evaluated. Boehm titration method and FT-IR techniques were used to characterize surface properties. (Liquid) nitrogen adsorption isotherm method was used to characterize pore structure.
4.The surface pressure-area per molecule isotherm of Gemini surfactant, propdiyl-1,3-bis (dimethyloctadecylammonium bromide)-PBDOAB, was measured at an air/liquid interface of 1.0 mol/L aqueous NaBr solution and pH=10.86. Variation of domain morphologies formed by Gemini surfactant with surface pressures at the air/liquid was observed via home-built Brewster angle microscope (BAM).
6.A method to calculate quantitatively the adsorption volume or adsorption space of per mass of adsorbent derived from both the adsorbed molecule volume and the maximum adsorbance of a solute in an adsorption isotherm under a given experimential condition is presented firstly for a solid/liquid adsorption system of the solute in a dilute aqueous solution.This method is suitable for not only mono-layer adsorption,but also mani-layer adsorption and micelle adsorpion of surfactant constructed by hydrophile and lipophile groups.Therefore,the surface concentration of the adsorbate,CS, deduced from the adsorption volume is possessed of the meaning of true concentration,and the value of the patition coefficient of the adsorbate between solid and liquid phass,Pα, attained by the CS and the C,solution concentration of the adsorbate,can be accurate.The foregoing a set of calculations are presented for the solid-liquid adsorption systems consisted of the wool fiber and separately dodecyltrimethyl-ammonium bromide (DTAB) and hexadecyltrimethyl-ammonium bromide (CTAB) in this paper.This provides a strong basis for adsorption thermodynamic investigation of adsorbate.
