问题 问答题 简答题

影响活性炭吸附性能的因素?

答案

参考答案:

(1)活性炭的性质:活性炭本身的性质是影响活性炭吸附性能的最重要因素。

(2)吸附质的性质:吸附质的性质及活性炭的性质共同决定了活性炭对这种吸附质的吸附性能。对活性炭性能影响比较大的分子极性,分子大小及构型,过大的分子不可能进入活性炭小孔中。分子的疏水性越强越容易被吸附。

(3)其他因素:活性炭以及吸附质的性能决定着吸附质的吸附性能,而其他一些外界因素将会通过影响他们性质来影响吸附质的吸附性能,这些外界因素包括溶液的pH值、无机离子组成以及含量,还有无机沉淀等。

(4)活性炭与水处理化学药剂的反应:活性炭是一种具有还原性的物质,因此在水处理过程中,活性炭常常和氧化性的物质,如氧、氯、二氧化氯、高锰酸盐反应。

选择题
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