Mn-Fe-Ce/GAC催化臭氧氧化苯胺废水
Mn-Fe-Ce/GAC CATALYZED OZONE OXIDATION TECHNOLOGY FOR ANILINE WASTEWATER
姚海倩 1郭新超 1符峰满 1杨好 1郭祥 1张方红2
作者信息
- 1. 西安建筑科技大学环境与市政工程学院陕西省环境工程重点实验室西北水资源与环境生态教育部重点实验室,西安 710055
- 2. 青海省人民防空工程设计研究院有限公司,西宁 810001
- 折叠
摘要
以颗粒活性炭为载体,在其上负载锰铁铈多金属氧化物,采用浸渍煅烧法制备了 Mn-Fe-Ce/GAC催化剂.通过SEM、XRD、XPS、BET对催化剂结构进行表征,结果表明金属在催化剂表面均匀分散.研究了不同因素对催化臭氧氧化降解DOC和TN效果的影响,并且探究了催化剂的重复利用及稳定性.在臭氧投加量为1.9 mg/(L·min),废水初始pH为6.3,进水苯胺浓度为19.89 mg/L的条件下,反应150 min后,DOC和TN去除率分别达到88.88％和86.73％,催化剂处理效果良好,且重复使用5次后,DOC和TN去除率仍保持在75％和70％以上,其重复使用性能稳定.
Abstract
The Mn-Fe-Ce/GAC catalyst was prepared by impregnation calcination using activated carbon particles as the carrier and loaded with Mn-Fe-Ce polymetallic oxides,and its properties were characterized by SEM,XRD,XPS,and BET,and the results showed that the metal was well dispersed and uniformly loaded on the catalyst surface.The effects of catalyst dosage,initial pH and initial aniline concentration of wastewater on the catalytic ozone oxidation degradation of DOC and TN were investigated,and the reuse and stability of the catalyst were also investigated.The main conclusions were as follows:under the conditions of ozone dosage of 1.9 mg/(L·min),initial pH of wastewater of 6.3 and influent aniline concentration of 19.89 mg/L,the DOC and TN removal rates reached 88.88％and 86.73％,respectively,after 150 min of reaction,and the catalyst was proved to have good treatment effect.After the catalyst was reused five times,the DOC and TN removal rates were maintained more than 75％and 70％respectively,and the performance of the catalyst was stable after reuse.
关键词
Mn-Fe-Ce/GAC/催化臭氧氧化/非均相催化剂/苯胺废水/DOCKey words
Mn-Fe-Ce-/GAC/catalytic ozone oxidation/non-homogeneous catalyst/aniline wastewater/DOC引用本文复制引用
基金项目
青海省中央引导地方科技发展资金项目(2022ZY039)
出版年
2024
NETL
NSTL
万方数据