响应面法优化液态聚铁产品制备条件

Optimization of Preparation Conditions for Liquid Polymeric Ferric Sulfate by Response Surface Analysis

摘要: 为了促进废铁屑的再利用，实现废物资源化。本文主要通过单因素试验结合响应面分析法对H₂O₂直接氧化法制备聚合硫酸铁的制备条件中的n(H₂SO₄)：n(FeSO₄)、n(H₂O₂)：n(FeSO₄)以及熟化温度(T)，通过响应面分析法进行优化，从而得到关于直接氧化法制备PFS的最佳制备条件。结果表明：单因素试验中，最佳n(H₂SO₄)：n(FeSO₄)比值区间为[0.2, 0.3]；最佳n(H₂O₂)：n(FeSO₄)比值区间为[0.5, 0.7]；最佳熟化温度(T)区间为[55, 65]℃。经过优化后得到的最佳制备条件为：n(H₂SO₄)：n(FeSO₄)的比值为0.25:1；n(H₂O₂)：n(FeSO₄)的比值为0.60:1；T为59.88℃。且经验证，产品符合《水处理剂  聚合硫酸铁》(GB/T 14591-2016)一等品标准。

Abstract: In this paper, n(H₂SO₄):n(FeSO₄), n(H₂O₂):n(FeSO₄) and curing temperature (T) were prepared by single factor test combined with response surface analysis in the preparation of polymeric ferric sulfate by H2O2 direct oxidation optimized by response surface methodology to obtain the optimal preparation conditions for the preparation of PFS by direct oxidation. The results show that in the single factor experiment, the optimal n(H₂SO₄):n(FeSO₄) ratio interval is [0.2, 0.3]; the optimal n(H₂O₂):n(FeSO₄) ratio interval is [0.5, 0.7]; the ripening temperature (T) interval is [55, 65]˚C. The optimum preparation conditions were as follows: n(H₂SO₄):n(FeSO₄) ratio was 0.25:1; n(H₂O₂):n(FeSO₄) ratio was 0.60:1; T was 59.88˚C. And the product has been verified to meet the first-class standard of “Water Treatment Agent polymeric ferric Sulfate” (GB/T 14591-2016).