用活性炭从水溶液中吸附乙腈特性的研究

STUDY ON THE ADSORPTION BEHAVIOUR OF ACETONITRILE FROM AQUEOUS SOLUTION ON TO THE ACTIVATED CARBON

用气相色谱法考察了活性炭从水溶液中对乙腈工业污染物的吸附行为，估算了吸附常数、孔扩散系数、吸附过程的焓变及描述吸附等温线方程有关参数．

Activated carbons have been widely used in adsorption processes for the purpose of theremoval of toxic substances in wastewater treatment, but the theoretical study of adsorption ofacetonitrile on this adsorbent is limited. In this paper, adsorption behaviour of acetonitrile fromaqeous solution by activated carbon has been investigated.The adsorption capacity and adsorptionisothem of this system at different conditions were determined by gas chromatography. On thisbasis, some adsorption parameters such as constant of adsorption rate, constants in Langmuirequation and Freundrich equation, heat of adsorption as well as pore diffusion coefficient wereestimated.