Journal of Chaohu University ›› 2018, Vol. 20 ›› Issue (6): 42-47.
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The almond-based activated carbon was used as adsorbent for treating low phenol concentration wastewater; the adsorption equilibrium experiments data were fitted with Langmuir, Freundlich, pseudo-first order and pseudo-second order equations. The results showed that adsorption equilibrium data fit Langmuir model. Equilibrium adsorption capacity decreased with the increasing temperature in low concentration. However, it related to "adsorption-desorption" balance when phenol concentration was higher. The adsorption process could be described by pseudo-second order kinetic model well, and chemical adsorption was the rate-limiting step.
