文章摘要
催化湿式氧化耦合Fe2O3/Al2O3膜分离处理有机废水
Catalytic wet peroxide oxidation for organic wastewater treatment by Fe2O3/Al2O3 catalyst coupled with ceramic membrane
投稿时间:2019-04-12  修订日期:2019-05-23
DOI:
中文关键词: 催化湿式过氧化氢氧化  Fe2O3/Al2O3 膜催化剂  苯酚  高级氧化技术
英文关键词: Catalytic wet peroxide oxidation  Fe2O3/Al2O3 membrane catalyst  Phenol  AOPs
基金项目:国家自然科学基金资助项目(重大项目:21590813);辽宁省兴辽英才计划项目资助(XLYC1801003)
作者单位E-mail
刘祎玮 大连理工大学 yiwei_job@163.com 
全燮 大连理工大学 quanxie@dlut.edu.cn 
陈硕 大连理工大学  
于洪涛 大连理工大学  
杜磊 大连理工大学  
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中文摘要:
      为提高有机废水的降解效率,设计了一种耦合膜分离和催化湿式过氧化氢氧化(CWPO)技术的反应器。通过溶胶凝胶法将Fe2O3/Al2O3催化剂涂覆到陶瓷管式膜基底上。并通过控制PVA的浓度和涂覆次数,将制备的膜孔径优化到超滤范围。在进行的CWPO实验中,优化了pH,温度,压力和H2O2浓度操作条件。实验表明,在20mM H2O2,pH=6,90℃和4bar的反应条件下,苯酚在150min内能完全降解,TOC去除率为70%。五次连续重复实验和溶出测试表明Fe2O3/Al2O3陶瓷膜具有良好的稳定性和可重复性。该反应器耦合CWPO与膜分离技术为有机废水处理领域提供了新的思路。
英文摘要:
      A reactor coupling catalytic wet peroxide oxidation (CWPO) with ceramic tubular membrane separation was designed for treatment of organic wastewater. The membrane was fabricated by coating Fe2O3/Al2O3 on the membrane support by the sol-gel method. The pore size of prepared membrane was optimized to the range of ultrafiltration by controlling PVA concentration and coating times. The CWPO experiment was conducted in various operating conditions to select the optimal pH, working temperature, pressure and H2O2 concentration. The phenol degradation results show complete phenol degradation and 70% TOC removal within 150 min under pH 6, 90°C, 4 bar when the H2O2 concentration is 20mM. The results of five consecutive and dissolution experiments illustrate good stability and repeatability of the Fe2O3/Al2O3 ceramic membrane. The reactor coupling CWPO with membrane separation presents new insights into the field of organic wastewater treatment.
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