Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (12): 2767-2772.doi: 10.3866/PKU.WHXB20112767


Adsorption Performance of Tetradecyl Aryl Sulfonates on Oil Sand from the Daqing Oilfield

DONG Zhi-Long, DING Wei, LIU Kun, ZHANG Zhi-Wei, QU Guang-Miao, YU Tao   

  1. Chemistry and Chemical Engineering School, Northeast University of Petroleum, Daqing 163318,Helongjiang Province, P. R. China
  • Received:2011-07-19 Revised:2011-09-13 Published:2011-11-25
  • Contact: DING Wei
  • Supported by:

    The project was supported by the National Major Technology Special Fund of China (2008ZX05011), National Key Basic Research Program of China (973) (2005CB221300), and Graduate Student Innovation Research Project of Heilongjiang Province, China (YJSCX2008-044HLJ).

Abstract: Three tetradecyl aryl sulfonates of high purity were synthesized. Their static adsorption performance on oil sand from the Daqing oilfield was studied and the influence of adsorption time, adsorption temperature, concentrations of sulfonate, NaCl, NaOH, and n-butyl alcohol on the efficiency of adsorption were investigated. The experimental results show that with an increase in the concentrations of the sulfonates the adsorption capacity initially increased and then remained constant. The adsorption capacity increased with the addition of NaCl and NaOH while it decreased with the addition of n-butyl alcohol and the increase of temperature. In the structural isomer, upon moving the aryl from the terminal to the center of the long alkyl chain, the adsorption capacity decreased and the impact of the additive was reduced. Thermodynamic results show that the adsorption of tetradecyl aryl sulfonates onto oil sand could be well described by the Langmuir isotherm. The constants of each equation were calculated from the experimental data and indicated the characteristics of oil sand adsorption. The dynamic results showed that the adsorption capacity changing with time as described by the Elovich equation.

Key words: Alkyl aryl sulfonate, Additive, Solid/liquid adsorption, Adsorption thermodynamics, Adsorption dynamics