以负载醋酸锌的废活性炭为原料,采用微波法得到再生活性炭产品吸附甲苯.测定了20、30和40℃时活性炭吸附甲苯的吸附等温线和穿透曲线,并用Langmuir和Freundlich方程处理实验数据,Lang-muir方程能很好地拟合实验数据,计算了甲苯在活性炭上的最大饱和吸附量(qm)为273.23mg/g、平均吸附热(△H)为-1.92kJ/mol,吸附自由能(△G)为负数,吸附熵(△S)随吸附量增加而降低,表明该吸附过程是一个自发的放热过程.在相同入口气体浓度和吸附温度下,比较了3种活性炭的饱和吸附量,对比结果表明微波活性炭具有较大的饱和吸附量.
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