Abstract: The adsorption behaviors of phenol and aniline on nonpolar
macroreticular adsorbents (NDA100 and Amberlite XAD4) were investigated in
single or binary batch system at 293K and 313K respectively in this study. The
results indicated that the adsorption isotherms of phenol and aniline on both
adsorbents in both systems fitted well Langmuir equation, which indicated a
favourable and exothermic process. At the lower equilibrium concentrations, the
individual amount adsorbed of phenol or aniline or macroreticular adsorbents in
single-component systems was higher than those in binary-component systems
because of the competition between phenol and aniline towards the adsorption
sites. It is noteworthy, on the contrast, that at higher concentrations, the
total uptake amounts of phenol and aniline in binary-component systems were
obviously larger than that in single-component systems, and a large excess was
noted on the adsorbent surface at saturation, which is presumably due to the
cooperative effect primarily arisen from the hydrogen bonding or weak acidbase
interaction between phenol and aniline.
