氢氧化钾法制备竹活性炭

以林业废弃物竹屑为原料,氢氧化钾为活化剂制备高性能活性炭。采用3因素3水平正交试验设计法考察活化温度、活化时间以及浸渍时间对产品吸附性能的影响。在最佳条件下,料液比1:4,浸渍时间1 h,活化温度900℃和活化时间90 min。制得的活性炭具有发达的微孔隙结构,比表面积高达2415 m²/g。

Preparation of Activated Carbon from Bomboo by Potassium Hydroxide Method

Activated carbon with high quality was prepared from a forest waste of bamboo dust using potassium hydroxide as an activating agent. Effects of activation temperature, activation time, and impregnation time on adsorption of activated carbon were studied by orthogonal test. The optimum parameters for preparation of activated carbon were: 1:4 of the ratio of bamboo dust to potassium hydroxide solution, 1 h of impregnation time, 900℃ of activation temperature, and 90 min of activation time. The prepared activated carbon under the condition of optimum parameters had the structure of enormous micropore and its surface area was up to 2415 m²/g.