摘要
造纸废水中残留的有机物难以降解,阳离子染料甲基橙就是其中一种有代表性的有机污染物,其结构中含有偶氮基等官能团,采用传统的物理化学方法不易将其彻底降解。本论文首先以Fe_(3)S_(4)为异相芬顿(Fenton)试剂、AC为载体,采取溶液浸渍法制备了复合催化剂Fe_(3)S_(4)-ACFC;然后,用甲基橙溶液模拟造纸废水,进行H2O2分解氧化有机污染物的实验,探究了复合催化剂Fe_(3)S_(4)-ACFC用量、H_(2)O_(2)用量、pH值、温度对该实验反应的影响。实验表明:在甲基橙溶液质量浓度为24 mg/L,催化剂在体系中的质量浓度为1.2 g/L,H2O2浓度为12 mmol/L,pH为6,温度为55℃时,甲基橙的降解率可以达到98.34%。
The residual organic compounds in papermaking wastewater are difficult to degrade.The cationic dye methyl orange is one of the representative organic pollutants.The structure of methyl orange contains functional groups such as azo groups,which are not easily completely degraded by some traditional physical and chemical methods.Fe_(3)S_(4) is used as a heterogeneous Fenton reagent,ACFC is used as the carrier,and the composite catalyst Fe_(3)S_(4)-ACFC is prepared by the solution impregnation method to catalyze the decomposition and oxidation of organic pollutants by H_(2)O_(2).In the experiment,methyl orange solution was used to simulate papermaking wastewater,and the effects of catalyst dosage,H_(2)O_(2) dosage,pH value and temperature on the reaction were explored.Experiments show that when the concentration of methyl orange solution is 24 mg/L,the concentration of catalyst in the system is 1.2 g/L,the concentration of H_(2)O_(2) is 12 mmol/L,the pH is 6,and the temperature is 55℃,the degradation rate of methyl orange can reach 98.34%.
作者
李昌胜
刘忠
安俊健
LI Changsheng;LIU Zhong;AN Junjian(China Light Industry Key Laboratory of Papermaking and Biorefinery,Tianjin Key Laboratory of Pulp and Paper,College of Light Industry Science and Engineering,Tianjin University of Science&Technology,Tianjin 300457,China;School of materials and chemical engineering,Hubei University of Technology,Wuhan 430068,China)
出处
《天津造纸》
2021年第1期25-31,共7页
Tianjin Paper Making
