CCD法优化铁碳微电解盐酸黄连素废水条件研究  

Optimization of Iron-carbon Microelectrolysis Treatment of Berberine Hydrochloride Wastewater by CCD Method

作　　者：凌琪[1,2] 陈婷娜 伍昌年 王晏平[2] 董松鹤 霍奔 马雨龙 LING Qi;CHEN Tingna;WU Changnian;WANG Yanping;DONG Songhe;HUO Ben;MA Yulong(Key Laboratory of Anhui Province for Water Pollution Control and Wastewater Resources,Anhui Jianzhu University,Hefei 230601,China;School of Environment and Energy Engineering,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学水污染控制与废水资源化安徽省重点实验室,安徽合肥230601 [2]安徽建筑大学环境与能源工程学院,安徽合肥230601

出　　处：《环境科学与技术》2019年第6期94-100,共7页Environmental Science & Technology

基　　金：国家水体污染控制与治理科技重大专项课题(2014ZX07405003);2018年度省级大学生创新创业训练计划项目(119)

摘　　要：文章采用CCD法对铁碳微电解盐酸黄连素废水条件进行优化,建立二次多项式预测模型,并对其进行动力学分析。实验结果表明,对初始浓度为100 mg/L的盐酸黄连素进行铁碳微电解的最佳条件是:曝气量3.78 L/min、固液比0.45、反应时间3.46 h、初始pH 2.90;在此条件下,盐酸黄连素去除率的响应面模型验证值为84.23%,实验值为82.93%,两者仅偏差1.3%。铁碳微电解降解盐酸黄连素动力学过程与表观二级反应动力学模型拟合程度最高,利用二级衰减方程模型Ct=a/(1+bt)在不同盐酸黄连素初始浓度下的反应进行拟合,其拟合相关系数均达到0.97以上,较好地反映了铁碳微电解盐酸黄连素的动力学过程,有助于分析不同反应时间下废水剩余浓度的变化。The CCD method was used to optimize the conditions of iron-carbon micro-electrolysis treatment of berberine hydrochloride wastewater.A quadratic polynomial prediction model was established and its dynamic analysis was carried out.The experimental results showed that the optimum conditions for iron-carbon microelectrolysis treatment of berberine hydrochloride with an initial concentration of 100 mg/L were aeration rate as 3.78 L/min,solid-liquid ratio as0.45,reaction time as 3.46 h,and initial pH as 2.90.Under this condition,the verification value of berberine hydrochloride removal rate by response surface model was 84.23%,and the experimental value was 82.93%.The error between the two was only 1.3%.The kinetics process of iron-carbon micro-electrolysis treatment of berberine hydrochloride was the highest fitted with the apparent second-order reaction kinetics model.The second-order attenuation equation model Ct=a/(1+bt)was used to fit the reaction at different initial concentrations of berberine hydrochloride,and all the correlation coefficient were above 0.97.It well reflected the kinetics process of iron-carbon micro-electrolysis treatment of berberine hydrochloride,which is helpful to analyze the change of residual concentration of wastewater under different reaction time.

关 键 词：铁碳微电解 盐酸黄连素 响应面法优化 动力学 

分 类 号：X703[环境科学与工程—环境工程]