Plackett-Burman设计和响应曲面法优化除磷陶粒的制备

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。

Plackett-Burman design and response surface method to optimize the preparation of phosphorus removal ceramsite

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, CaSO4, 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), CaSO4 (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 CaSO4, coal fly ash and NaOH affect phosphorus removal significantly, giving p value of 0.010 8 and 0.029 5, respectively.