水铝钙石吸附水中F^-的条件优化  

Optimization of the Adsorption F-Conditions by Hydrocalumite

作　　者：许昶雯 汪真 陈国兵 张进[3] 张磊 Xu Changwen;Wang Zhen;Chen Guobing;Zhang Jin;Zhang Lei

机构地区：[1]滁州学院土木与建筑工程学院 [2]安徽大德机电设备有限公司 [3]中国人民解放军66220部队,安徽滁州239000

出　　处：《滁州学院学报》2020年第2期48-52,共5页Journal of Chuzhou University

基　　金：安徽省高校自然科学研究重点项目“不同污染类型的河道细菌群落特征及机制研究”(KJ2019A0641);安徽省大学生创新创业项目“改性水铝钙石对水中氟离子的优化去除”(S201910377110)。

摘　　要：针对当前水中F-超标问题,研究水铝钙石吸附F-的最佳反应条件。通过Plackett-Burman实验筛选得出影响F-吸附率的主要因素,利用Box-Behnken响应面法对主要影响因素进行优化设计并构建模型。经方差分析可知利用该模型优化水铝钙石吸附水中F-的反应条件具有较高的可信度,并得出最佳吸附条件:水铝钙石焙烧温度为320℃,水铝钙石投加量为7.67g·L^-1,反应时间为98.67min,此时F-理论吸附率为98.87%。经实验验证,在最优条件下F-吸附率实测值与预测值仅相差0.11%,模型具有一定可行性。Aiming at the current problem of F-exceeding in water,the best reaction conditions for the adsorption of F-by hydrocalumite were studied.The main factors influencing the F-adsorption rate were selected through the Plackett-Burman experiment.The Box-Behnken response surface method was used to optimize the main influencing factors and build a model.It can be seen from the analysis of variance that using this model to optimize the reaction conditions of the F-adsorption by hydrocalumite has high reliability.The best adsorption conditions were obtained:the hydrocalumite calcined temperature 320℃,the hydrocalumite dosage 7.67 g·L^-1,and the reaction time 98.67min.The F-theoretical adsorption rate at this time was 98.87%.After experimental verification,under the optimal conditions,the measured value of F-adsorption rate was only 0.11%different from the predicted value,and the model was feasible.

关 键 词：水铝钙石 F^-吸附率 响应面优化 

分 类 号：X524[环境科学与工程—环境工程]