高温改性糖滤泥处理刚果红废水的研究

Study on the treating Congo red wastewater by high temperature modified sugar filter mud

高温改性糖滤泥采用静态吸附法对刚果红进行模拟废水的吸附实验,考察了刚果红初始浓度、吸附时间、吸附剂投加量、pH值及温度对脱色率和吸附量的影响,确定了最佳吸附脱色条件,用伪一级、伪二级动力学方程模拟改性糖滤泥吸附刚果红的动力学行为,并研究了吸附热力学行为。当刚果红初始浓度为100mg/L,吸附时间为120min,吸附剂投加量为0.1g及 pH值为6,温度为30℃时,废水脱色率和吸附量分别为97.22%和32.40mg/g。伪二级动力学方程机理更适合解释高温改性糖滤泥对刚果红吸附的现象,该吸附过程在任何温度下均为放热、自发的反应。傅里叶红外光谱分析高温改性糖滤泥吸附刚果红存在化学吸附。

The high temperature of modified sugar filter adsorption performance of Congo red mud were prepared by the static adsorption method simulated wastewater adsorption experiment,inspected the Congo red initial concentration,adsorption time,adsorbent dosing quantity,and the effect of temperature on the decoloring rate pH,determine the optimum adsorption decolorizing conditions,pseudo-first-order and pseudo-secondary dynamics equation was used to simulate modified sugar filter adsorption dynamics behavior of Congo red mud,and studied the adsorption thermodynamics behavior.When the initial concentration of 100 mg/L,the Congo red adsorption time of 120 min,adsorbent additive quantity is 0.1 g and the pH value is 6,the temperature of 30℃wastewater decolorization rate and adsorbing capacity was 97.22%and 32.40 mg/g.The mechanism of pseudo-second-order kinetic equation is more suitable to explain the phenomenon of high temperature modified sugar filter mud adsorbing Congo red,which is exothermic and spontaneous at any temperature.Fourier infrared spectroscopy analysis of high temperature modified sugar filter mud adsorption Congo red is chemical adsorption.