【摘要】 为了确定微波辅助硫酸亚铁改性海泡石的最佳制备工艺条件,通过单因素实验选取实验因素与水平,根据Box-Benhnken的中心组合实验设计原理,在单因素试验的基础上采用3因素3水平的响应面分析法,依据回归分析确定各工艺条件的影响因子,以改性海泡石对重金属Pb的去除率为响应值作响应面和等值曲线图。在分析各因素显著性及其交互作用的基础上,得出海泡石改性最佳工艺条件为微波辐照功率为250 W、辐照时间为7min、硫酸亚铁添加量为2.68%。在海泡石添加量为0.4g、震荡时间为30min条件下,对100mL浓度为100mg/L的含Pb废水去除率理论上可达99%,实际最高去除率为95.5%。更多还原

【Abstract】 In order to determine the optimal preparation condition of optimization on modification of sepiolite by microwave assisted ferrous sulfate treatment via response surface methodology(RSM),the factors and their levels were established first by single factor experiment,and then RSM was used on the basis of single factor experiment via design concept of the Box-Benhnken center combination experiment with 3factors and 3levels design were performed.The result showed that,the optimal preparation condition of the modified sepiolite were as follows:the irradiation power 250 W,irradiation time 7min,and the ferrous sulfate was added 2.68%to Pb2+wasted water,the theoretical removal rate of Pb2+under the conditions of sepiolite added 0.4g and contacted time for 30 min can reach 99%and the actual value of removal rate was 95.5%respectively on the modified sepiolite in the 100 mL Pb2+waste water at 100mg/L.更多还原