Table 4: Foaming properties of four surfactants with different concentrations at room temperature.

Concentration (mg/L)CTAACCTABUCTAHECTACA
(cm) (cm) (%) (cm) (cm) (%) (cm) (cm) (%) (cm) (cm) (%)

8010.57.975.58.56.272.56.82.740.20.00.00.0
20013.210.378.210.07.878.08.53.642.80.00.00.0
40017.814.380.514.811.379.311.55.648.90.00.00.0
60022.819.585.719.216.586.216.28.552.40.00.00.0
80024.522.692.321.519.289.520.011.859.27.51.520.5
100027.225.593.923.222.396.221.813.561.912.54.738.2
200028.027.096.525.023.493.722.017.177.813.05.945.9
300028.027.698.626.826.197.423.220.588.416.59.155.2
400027.326.898.225.524.796.922.019.990.516.09.660.2
500025.524.997.925.223.995.021.218.989.215.59.259.8