以一种黏土矿物材料为非均相类芬顿催化剂对甲基橙的降解
发布时间：2018-07-28 18:22
【摘要】：为实现以甲基橙为代表的偶氮类染料的高效降解,采用一种黏土矿物材料——Quantum Energy~汶Radiating Material(下称QE)为催化剂,系统分析了其在非均相类芬顿反应中的催化剂协同静态吸附作用,并考察了不同因素对甲基橙去除效果的影响,同时基于降解过程中Fe2+和总Fe析出量(以ρ计)、·OH等的变化过程,探讨了QE降解甲基橙的作用机制.结果表明,QE对甲基橙具有良好的吸附作用,同时,其作为非均相类芬顿催化剂对甲基橙的降解受到pH、温度、c(H_2O_2)、催化剂投加量等因素的影响.优化后的降解条件:初始ρ(甲基橙)为50 mg/L、QE投加量为5 g/L、c(H_2O_2)为100 mmol/L、pH为2、温度为60℃,在该条件下反应40 min后,甲基橙的去除率可达到99%.以叔丁醇作为·OH淬灭剂,随着c(叔丁醇)的增高,反应体系中甲基橙的去除率随之下降,说明·OH在该体系甲基橙降解中起重要作用;对在反应过程中Fe2+和总Fe析出量的监测数据表明,体系中QE对甲基橙的降解为均相芬顿反应、非均相芬顿反应和吸附作用协同作用的结果.研究显示,以QE为催化剂,通过吸附协同催化氧化作用可以有效处理含甲基橙的染料废水.
[Abstract]:In order to achieve the efficient degradation of azo dyes represented by methyl orange, a clay mineral material, called QE under Quantum Energy Radiating Material (, was used as catalyst, and its synergistic static adsorption in heterogeneous Fenton reaction was systematically analyzed. The effects of different factors on the removal efficiency of methyl orange were investigated, and the mechanism of degradation of methyl orange was discussed based on the changes of Fe2 and total Fe precipitates (), OH, 蟻). The results show that QE has good adsorption on methyl orange, and the degradation of methyl orange is influenced by pH, temperature (H_2O_2), dosage of catalyst and so on. The optimum degradation conditions are as follows: the initial 蟻 (methyl orange) is 50 mg / L QE, the dosage is 5 g / L (H_2O_2), the pH is 2, the temperature is 60 鈩，
本文编号：2151208
[Abstract]:In order to achieve the efficient degradation of azo dyes represented by methyl orange, a clay mineral material, called QE under Quantum Energy Radiating Material (, was used as catalyst, and its synergistic static adsorption in heterogeneous Fenton reaction was systematically analyzed. The effects of different factors on the removal efficiency of methyl orange were investigated, and the mechanism of degradation of methyl orange was discussed based on the changes of Fe2 and total Fe precipitates (), OH, 蟻). The results show that QE has good adsorption on methyl orange, and the degradation of methyl orange is influenced by pH, temperature (H_2O_2), dosage of catalyst and so on. The optimum degradation conditions are as follows: the initial 蟻 (methyl orange) is 50 mg / L QE, the dosage is 5 g / L (H_2O_2), the pH is 2, the temperature is 60 鈩，
本文编号：2151208
本文链接：https://www.wllwen.com/shengtaihuanjingbaohulunwen/2151208.html
