摘要
利用Fenton试剂法对硝基苯废水进行处理,采用正交实验和单因素实验研究H2O2用量、Fe(Ⅱ)浓度、pH值和反应时间等4个主要因素对氧化效果的影响,确定反应的最佳工艺条件为:当Fe(Ⅱ)质量浓度为50 mg/L,pH值在5.7左右,H2O2质量浓度为300 mg/L,反应50 min,体系中硝基苯去除率可达到94%以上,COD去除率可达36.52%。另外,深入研究其他过渡金属离子如Fe(Ⅲ)、Cu(Ⅱ)等对Fenton氧化反应过程的影响,结果发现Mn(Ⅱ)和Fe(Ⅲ)作催化剂更有利于COD去除率的提高,且Mn(Ⅱ)/H2O2体系的反应溶液色度最小。
Fenton is used to treat aqueous solutions of nitrobenzene（short for NB） and the effects of four main factors, the amount of H2O2, concentration of Fe（Ⅱ）, pH value and reaction time on oxidation efficiency are studied in the experiments. The removal rate of nitrobenzene and COD can reach above 94% and 36.52% respectively with conditions： the concentration of Fe（ Ⅱ ） 50 mg/L, pH value about 5.7, concentration of H2O2 300 mg/L and reaetion time 50 mins. It is found that Mn（Ⅱ） and Fe（Ⅲ） used as catalysts can help to remove COD and the chroms of aqueous solutions is the least.
出处
《工业安全与环保》
2007年第1期30-33,共4页
Industrial Safety and Environmental Protection
