STUDY OF SORPTION MECHANISM OF o-CHLOROPHENOLAND p-CHLOROPHENOL ONTO D301
In the present study X-ray photoelectron spectroscopy (XPS) was adopted to elucidate sorption mechanism of o-chlorophenol and p-chlorophenol onto a weak anion exchanger D301. The distribution of specific forms of amino groups on D301 was obtained and effect of free tertiary amine group on phenol sorption onto D301 was discussed. The result indicate that less free amino group on D301 caused by external solution with lower pH leads to less sorptive capacity of o-chlorophenol and p-chlorophenol respectively. Under the experimental conditions sorption of chlorophenols onto D301 can be explained by solid extraction mechanism and the coefficient of distribution has a linear relationship with the content of free amino group on D301.