引文：微納米氣泡強化臭氧高級催化氧化處理硝基苯廢水的效果

1. 文章信息

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

中文標題：微納米氣泡強化臭氧高級催化氧化處理硝基苯廢水的效果

2. 文章鏈接

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

3. 期刊信息

期刊名：環(huán)境工程技術學報

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, ,  任會學1, , ,  方睿1,  王訓陽1,  婁佳欣1,  畢宇鑫1,  何亮2

1.山東建筑大學機構市政與環(huán)境工程學院

2.蓬萊嘉信染料化工股份有限公司

基金項目: 山東省新舊動能轉換重大產(chǎn)業(yè)攻關項目（2020-370600-26-03-110192），山東省重點研發(fā)計劃（重大科技創(chuàng)新工程）項目（2020CXGC011203）

5.文中所用產(chǎn)品型號：3S-J5000

摘要:臭氧通過傳統(tǒng)曝氣方式降解污染物的效率低下，與微納米氣泡技術相結合可顯著提升氧化效率。以硝基苯廢水為例，分別研究臭氧在微納米氣泡和傳統(tǒng)曝氣條件下投加催化劑Mn/Mg/Ce@Al2O3前后對硝基苯的降解效果，設計自由基淬滅試驗分析反應機制，通過響應曲面法分析各主要影響因素并優(yōu)化試驗條件。結果表明：加壓溶氣釋氣法產(chǎn)生的微納米氣泡粒徑均勻，氣泡粒徑主要分布在437.3 nm，Zeta電位為?28.11 mV。在微納米氣泡強化臭氧催化氧化工藝中，臭氧溶解度達到13.50 mg/L，相比傳統(tǒng)曝氣提高了130.8%；自由基淬滅試驗結果證實在臭氧催化氧化過程中主要產(chǎn)生羥基自由基和超氧自由基對污染物進行高級氧化；投加催化劑Mn/Mg/Ce@Al2O3后，相比傳統(tǒng)曝氣方式，臭氧微納米氣泡對初始濃度200 mg/L的硝基苯廢水去除率提高了18.65%；響應曲面法優(yōu)化及驗證結果表明，在溫度為25 ℃，pH為8.2，催化劑Mn/Mg/Ce@Al2O3投加量為23 g/L時，臭氧微納米氣泡對硝基苯的去除率最高，可達89.42%。研究結果為強化臭氧高級氧化提供了可行的發(fā)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.