【摘要】 以玉米穗轴为原料、碳酸氢钠为化学活化剂通过微波辐照制备活性炭,采用中心组合设计(CCD),运用响应面法(RSM)进行工艺参数优化。考察了辐照功率、辐照时间和浸渍比对亚甲基蓝(MB)吸附值和产率的影响,通过模型优化确定最佳工艺参数为:辐照功率为385.74 W,辐照时间为5 min,浸渍比为4,该条件下制备的活性炭的亚甲基蓝(MB)吸附值和产率的实验结果和预测值分别为241.76 mg/g、27.39%和253 mg/g、28.28%,二者基本相符,验证了模型的有效性。更多还原

【Abstract】 The conditions for the preparation of activated carbon from corn cob as raw material,treated with NaHCO3 as activating agent,through microwave radiation have been optimized by response surface method(RSM) and central composite design(CCD).The effects of the radiation power,radiation time,and impregnation ratio on the adsorption capacity and yield results are investigated.The optimum conditions for preparing activated carbon from corn cob are as follows:radiation power is 385.74 W,radiation time 5 min and impregnation ratio 4.The experimental and predicted results for the adsorption capacity on methylene blue(MB) and yield of AC are 241.76 mg/g,27.39% and 253 mg/g,28.28%,respectively.The predicted adsorption capacity and yield after process optimization conform to the experimental values,verifying the efficiency of the model.更多还原