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根据Box-Behnken的中心组合实验设计原理,在单因素试验的基础上,采用五因素三水平的响应曲面分析法,建立了MIEX吸附去除HA的二次多项数学模型,并以HA去除率为响应值作响应面和等高线,考察了MIEX用量、pH值、温度、吸附时间和HA初始浓度对HA去除率的影响。结果表明,HA去除的优化工艺条件为:MIEX用量0.5m L,p H值8、温度30℃、吸附时间30min;在此工艺条件下,HA初始浓度为5mg/L时的去除率达到90.78%。
Based on Box-Behnken’s central composite experimental design principle, based on the single-factor experiment, a five-factor three-level response surface analysis method was used to establish the second-order multiple mathematical model for the removal of HA by MIEX. The response surface and contour line were used to investigate the effect of MIEX dosage, pH value, temperature, adsorption time and HA initial concentration on HA removal efficiency. The results showed that the optimum conditions for the removal of HA were as follows: the amount of MIEX was 0.5m L, pH value was 8, temperature was 30 ℃, adsorption time was 30min; under the conditions of 5mg / L HA, the removal rate of HA was 90.78% .