摘要：

采用亚硫酸氢钠（NaHSO₃）强化Fe²⁺/过硫酸盐（PS）体系降解铬黑T（EBT）。基于单因素实验结果，以Fe²⁺浓度、NaHSO₃投加量和PS浓度作为考察因素，EBT去除率为响应值，采用Box-Behnken响应曲面法建立二次数学模型，分析各因素及其交互作用对EBT降解的影响。在模型优化条件，即Fe²⁺浓度0.08 mmol/L、NaHSO₃投加量0.90mmol/L、PS浓度1.00 mmol/L条件下，预测EBT去除率为93.7%。验证实验平均结果为92.76%，与预测值偏差为0.94%。

关键词: 亚硫酸氢钠, 过硫酸盐, 铬黑T, 响应曲面法

Abstract:

Eriochrome black T(EBT) was degraded by strengthening Fe²⁺/persulfate(PS) system with sodium bisulfite(NaHSO₃). Based on single factor experimental results, Fe²⁺ concentration, NaHSO₃ dosage and PS concentration were selected as the investigation factors, and EBT removal rate was taken as response value, a quadratic mathematical model was established by Box-Behnken response surface method to analyze the influence of various factors and their interactions on EBT degradation. The optimal condition were Fe²⁺ 0.08 mmol/L, NaHSO₃ dosage 0.90 mmol/L and PS 1.00 mmol/L respectively, and the predicted EBT removal rate was 93.7%. The average result of verification test was 92.76%, which had a deviation of 0.94% compared with the predicted value.

Key words: sodium bisulfite, persulfate, eriochrome black T, response surface methodology

中图分类号: 

• TQ028.8