铁掺杂生物质衍生碳电催化深度处理精制棉废水的研究

Electrocatalytic advanced treatment of cotton-refining wastewater by iron-doped biomass-derived carbon

以豆渣为原料制备铁基粒子电极(Fe2O3/C),并将其用于三维电化学系统深度处理精制棉废水。基于响应面优化法(RSM)的中心复合设计(CCD)模型实验,考察反应时间、电流和极板间距对氯离子及COD去除的影响。通过模拟和方差分析得到显著水平的二次响应曲面模型。由响应曲面分析氯离子及COD去除的最佳处理条件为:反应时间为173.8 min、电流为0.58 A和极板间距为4.0 cm,此时氯离子及COD实际去除率分别为71.87%、75.23%,与模型预测值(74.72%、79.34%)接近。

Iron-based particle electrode(Fe2O3/C)is prepared by using bean dregs as raw material,and used in the three-dimensional electrochemical system for deep treatment of cotton-refining wastewater.Based on the central composite design(CCD)model experiment of response surface methodology(RSM),the effects of reaction time,current intensity and plate spacing on the removal efficiencies of chloride ion and COD are investigated.A significant level of quadratic response surface model is obtained through simulation and variance analysis.The optimal treatment conditions for removal of chloride ion and COD are obtained by response surface methodology as follows:reaction time is 173.8 min,current intensity is 0.58 A and plate spacing is 4.0 cm.Under these conditions,the actual removal rates of chloride ion and COD reach 71.87%and 75.23%,respectively,close to the model prediction ones,74.72%and 79.34%.