引文：微纳米气泡强化臭氧高级催化氧化处理硝基苯废水的效果

引文：微纳米气泡强化臭氧高级催化氧化处理硝基苯废水的效果

1. 文章信息

标题：Effects of advanced catalytic ozone oxidation enhanced by micro-nano bubbles on the treatment of nitrobenzene wastewater

中文标题：微纳米气泡强化臭氧高级催化氧化处理硝基苯废水的效果

2. 文章链接

DOI:  10.12153/j.issn.1674-991X.20240196

3. 期刊信息

期刊名：环境工程技术学报

4. 作者信息：QIN Yaping1,   REN Huixue1, FANG Rui1,  WANG Xunyang1,  LOU Jiaxin1,  BI Yuxin1,  HE Liang2

1.School of Municipal and Environmental Engineering, Shandong Jianzhu University

2.Penglai Jiaxin Dye Chemical Co., Ltd.

秦雅萍1, ,  任会学1, , ,  方睿1,  王训阳1,  娄佳欣1,  毕宇鑫1,  何亮2

1.山东建筑大学机构市政与环境工程学院

2.蓬莱嘉信染料化工股份有限公司

基金项目: 山东省新旧动能转换重大产业攻关项目（2020-370600-26-03-110192），山东省重点研发计划（重大科技创新工程）项目（2020CXGC011203）

5.文中所用产品型号：3S-J5000

摘要:臭氧通过传统曝气方式降解污染物的效率低下，与微纳米气泡技术相结合可显著提升氧化效率。以硝基苯废水为例，分别研究臭氧在微纳米气泡和传统曝气条件下投加催化剂Mn/Mg/Ce@Al2O3前后对硝基苯的降解效果，设计自由基淬灭试验分析反应机制，通过响应曲面法分析各主要影响因素并优化试验条件。结果表明：加压溶气释气法产生的微纳米气泡粒径均匀，气泡粒径主要分布在437.3 nm，Zeta电位为−28.11 mV。在微纳米气泡强化臭氧催化氧化工艺中，臭氧溶解度达到13.50 mg/L，相比传统曝气提高了130.8%；自由基淬灭试验结果证实在臭氧催化氧化过程中主要产生羟基自由基和超氧自由基对污染物进行高级氧化；投加催化剂Mn/Mg/Ce@Al2O3后，相比传统曝气方式，臭氧微纳米气泡对初始浓度200 mg/L的硝基苯废水去除率提高了18.65%；响应曲面法优化及验证结果表明，在温度为25 ℃，pH为8.2，催化剂Mn/Mg/Ce@Al2O3投加量为23 g/L时，臭氧微纳米气泡对硝基苯的去除率最高，可达89.42%。研究结果为强化臭氧高级氧化提供了可行的发展方向。

Abstract: Ozone is inefficient in degrading pollutants through traditional aeration methods, and its combination with micro-nano bubble technology can significantly improve oxidation efficiency. Taking nitrobenzene wastewater as an example, the degradation effect of ozone on nitrobenzene before and after adding Mn/Mg/Ce@Al2O3 catalyst under micro-nano bubbles and traditional aeration conditions was studied separately. The free radical quenching test was designed to analyze the reaction mechanism. The main influencing factors were analyzed by the response surface method and the test conditions were optimized. Results showed that the particle size of micro-nano bubbles produced by the pressurized gas dissolution and release method was uniform, and the particle size of most bubbles was 437.3 nm, and the Zeta potential was −28.11 mV. In the micro-nano bubbles-enhanced ozone catalytic oxidation process, the solubility of ozone reached 13.50 mg/L, which was 130.8% higher than that of traditional aeration. The results of free radical quenching test confirmed that in the process of ozone catalytic oxidation, hydroxyl radicals and superoxide radicals were mainly produced to carry out advanced oxidation of pollutants. After adding Mn/Mg/Ce@Al2O3 catalyst, compared with the traditional aeration method, the removal rate of nitrobenzene wastewater with the initial concentration of 200 mg/L by ozone micro-nano bubbles was increased 18.65%. The response surface method optimization and verification results showed that with the temperature at 25 ℃, pH of 8.2, Mn/Mg/Ce@Al2O3 catalyst dosing quantity of 23 g/L, the ozone micro-nano bubbles removal efficiency of nitrobenzene was the highest, which could reach 89.42%. The results can provide a feasible direction for the development of enhanced ozone advanced oxidation.