KOH活化法制备沙柳枝木活性炭的研究

活性炭是一种疏松多孔的碳单质，具有吸附作用，已在诸多领域广泛应用，例如，食品加工、军事化学防护、环境保护等。针对沙柳枝木的利用现状，选取KOH为活化剂并且采用微波法制备沙柳枝木活性炭，研究了活化剂辐射时间、质量浓度、液料比、辐射功率、浸渍时间等因素对活性炭吸附性能的影响，通过对单因素试验结果的正交优化，得出活性炭制备的最佳方法如下：KOH活化法制备沙柳枝木活性炭的最佳工艺条件为：液料比4:1、浸渍时间18 h、辐照功率560 W、辐照时间20 min，该工艺条件下所制备的活性炭成品碘吸附值为1011.01 mg/g，达到了GB/T 13803.2—1999中一级品标准。

Preparation of Activated Carbon from Salix psammophila Wood with Potassium Hydroxide as Activation Agent

Activated carbon is a kind of porous carbon with adsorption simple substance, and has been widely used in food processing, military chemistry, environmental protection, etc. Through the utilization of Salix psammophila wood, the author selected potassium hydroxide as the activating agent, prepared sand willow wood activated carbon, and investigated the effect of microwave irradiation, activator concentration, liquid-solid ratio, dipping time, radiation time, radiation power and other factors on the adsorption properties of activated carbon prepared by orthogonal optimization of the results of single factor test. The optimum technological condition for preparing sand willow wood activated carbon through activation of potassium hydroxide was: liquid-solid ratio 4:1, soaking time 18 h, irradiation power 560 W, irradiation time 20 min; under this condition, the activated carbon iodine adsorption value was 1011.01 mg/g, reaching the GB/T 13803.2—1999 standard.