周龙涛;李慧敏;安静;徐阳;张栌丹;

• 1:中国石油新疆油田公司工程技术研究院
• 2:中国石油新疆油田公司安全环保处

摘要(Abstract)：

以MCM-41分子筛为模板剂采用热缩聚合成法制备g-C_3N_4载体，通过浸渍法对其进行负载制备Ag_3PO_4-Fe_3O_4/g-C_3N_4非均相臭氧催化剂，以油田废水预处理后水中COD的去除率为评价指标考察其制备条件，并利用响应曲面法Box-Behnken试验设计优化。结果表明：当MCM-41分子筛添加量为15%,g-C_3N_4载体焙烧温度为520℃、Fe_3O_4负载质量分数为50%,Ag_3PO_4负载质量分数为20%的，Ag_3PO_4-Fe_3O_4/g-C_3N_4非均相臭氧催化剂对油田废水预处理后，水中COD去除率达83.06%。通过微观表征可知，由模板剂引入制得的有序管状g-C_3N_4载体与Ag_3PO_4、Fe_3O_4负载后改变了其晶面的有序性并增大了催化剂的比表面积。通过负载改性提高了Ag_3PO_4的稳定性，以及与Fe_3O_4协同作用对臭氧催化的活性。磁性材料Fe_3O_4负载利于催化剂的回收，经磁性分离干燥后重复使用，仍具有良好的催化活性，同时经高温焙烧活化后的再生性能亦较好。

关键词(KeyWords)： 环境工程学;g-C_3N_4;Fe_3O_4;Ag_3PO_4;臭氧催化;油田废水

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 周龙涛;李慧敏;安静;徐阳;张栌丹;

DOI: 10.13637/j.issn.1009-6094.2021.0652

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