摘要
为制备得到除磷效果较强的功能型陶粒,采用Plackett-Burman和响应曲面法对陶粒原料配比进行优化研究。采用Plackett-Burman实验设计筛选出具有显著除磷效应的4种原料——粉煤灰、水泥、石膏和氢氧化钠。以Box-Behnken Design响应面法建立数学回归模型,确定了最佳原料配比为:粉煤灰60.0 g、水泥15.0 g、氨基材料2.0 g、生石灰15.0 g、石膏3.0 g、氢氧化钠15.0 g,制得的陶粒磷去除率可达93.04%,颗粒强度为118.3 N。通过显著性检验和响应曲面等高线图分析,粉煤灰和氢氧化钠是显著影响陶粒磷去除率的主要原料,且粉煤灰与石膏、粉煤灰与氢氧化钠对陶粒的磷去除率有显著的交互影响,显著性p值分别为0.010 8和0.029 5。
In this study,ceramsite was prepared for phosphorus removal. The optimal mixture was determined using Plackett-Burman（ PB） and response surface methodology（ RSM）（ i. e.,Box-Behnken design（ BBD））methods. Initial Plackett-Burman design found four key components for successful phosphorus removal,namely coal fly ash,cement,CaSO_4,and NaOH. Subsequent Box-Behnken design was employed to optimize the proportion of these components in the mixture. Phosphorus removal reached 93. 04% with a mixture of coal fly ash（ 60. 0 g）,cement（ 15. 0 g）,amino-functionalized materials（ 2. 0 g）,CaO（ 15. 0 g）,CaSO_4（ 3. 0 g）,and NaOH（ 15. 0 g）. This composition also yielded a particle strength of 118. 3 N. Following analysis of the response surface,the interaction between coal fly ash and CaSO_4,coal fly ash and Na OH affect phosphorus removal significantly,giving p value of 0. 010 8 and 0. 029 5,respectively.
出处
《环境工程学报》
CAS
CSCD
北大核心
2017年第4期2291-2298,共8页
Chinese Journal of Environmental Engineering
基金
重庆市科技计划项目(cstc2014yykfB20003)
