摘要
以过渡金属Cu为主活性组分,通过加入第2活性组分Mn和稀土元素Ce,研制出适用于催化湿式过氧化法(CWPO)处理含高浓度蒽醌-2-磺酸钠有机废水的复合催化剂。考察了活性组分配比对催化剂的催化活性和稳定性的影响,并利用SEM和XRD表征手段,研究了掺杂Ce对催化剂表面微观结构的影响。结果表明,当Cu、Mn和Ce的质量比为-时,催化剂的催化性能最佳,在100 min内,废水COD的去除率能达到95.3%;掺杂Ce能有效提高活性组分在催化剂表面的分散程度从而改善催化剂的催化活性,并能有效抑制Cu的溶出。通过LC-MS分析该催化剂催化氧化蒽醌-2-磺酸钠降解过程中的代谢产物,推断出了催化氧化降解蒽醌-2-磺酸钠的途径。
A kind of composite catalyst composed of the main activated component Cu,the second activated component Mn and rare-earth element Ce was prepared which was suitable for treating highly concentrated sodium anthraquinone-2-sulphonate（SAS） organic wastewater by catalytic wet peroxide oxidation technology. The effects of active component ratio on the activity and stability of catalyst were explored, and the effects of doping Ce on surface structure of catalyst were studied by using SEM and XRD. The results showed that catalytic properties of the catalyst were the best and the removal rate of COD could reach 95.3% in 100 minutes when the mass ratio of Cu,Mn and Ce was 3 ： 1 ： 1. The degree of dispersion of active component on the support surface was effectively improved by doping Ce to enhance the catalytic properties. In the meanwhile, doping Ce on the catalyst could also effectively inhibit the dissolution of Cu2＋ LC-MS was used to analyze the metabolites of SAS in the degradation process by catalytic wet peroxide oxidation technology, and the degradation pathway was inferred.
出处
《环境工程学报》
CAS
CSCD
北大核心
2014年第4期1497-1502,共6页
Chinese Journal of Environmental Engineering
基金
江苏省太湖水环境综合治理科研项目(TH2012203)
