【摘要】：利用響應(yīng)面法(RSM)對原位摻硫活性炭活化過硫酸鹽生成硫酸根自由基(SO-4·)降解對氯苯酚進行了研究。選擇溶液初始pH值、反應(yīng)溫度及過硫酸鉀/對氯苯酚物質(zhì)的量比為考察因素,對氯苯酚擬一級降解速率常數(shù)(Y)為響應(yīng)值,通過Box-Behnken設(shè)計方法(BBD)建立了以對氯苯酚擬一級降解速率常數(shù)為響應(yīng)值的二次多項式模型,分析了各因素及其相互作用對擬一級降解速率常數(shù)的影響,確定了最佳反應(yīng)條件。結(jié)果表明:所選取的3個因素中溫度對擬一級降解速率常數(shù)的影響最為顯著,且最佳反應(yīng)溫度為55℃,過硫酸鉀/對氯苯酚物質(zhì)的量比為25.64,溶液初始pH值為4.51.在該條件下,對氯苯酚擬一級降解速率常數(shù)的試驗值為0.192 94min~(-1),與模型預(yù)測值偏差0.003 26min~(-1),說明響應(yīng)面方法能夠有效優(yōu)化對氯苯酚的降解條件。
[Abstract]:The degradation of p-chlorophenol by in-situ sulfur-doped activated carbon activated persulfate to form sulfate radical (SO- 4) was studied by response surface method (RSM). The initial pH value of the solution, the reaction temperature and the ratio of potassium persulfate to p-chlorophenol were selected as the factors, and the pseudo-first-order degradation rate constant (Y) of p-chlorophenol was the response value. A quadratic polynomial model based on the pseudo-first-order degradation rate constant of p-chlorophenol was established by Box-Behnken design method (BBD). The effects of each factor and its interaction on the pseudo-first-order degradation rate constant were analyzed. The optimum reaction conditions were determined. The results showed that the optimum reaction temperature was 55 鈩，

本文編號：2440203