微纳米气泡气液分散体系耦合陶瓷膜间接法氧化吸收甲苯  

Oxidation and absorption of toluene by micro-nano bubble gas-liquid dispersion system coupled with ceramic membrane based on indirect method

作　　者：陈钦 罗睿涵[3] 朱欣杰 陆丹慧 肖政国 李登新 CHEN Qin;LUO Ruihan;ZHU Xinjie;LU Danhui;XIAO Zhengguo;LI Dengxin(College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China;School of Resources and Environmental Engineering,Shanghai Polytechnic University,Shanghai 201209,China;The High School Affiliated to Beijing Normal University,Beijing 100050,China;Shanghai Textile Research Institute Co.,Ltd.,Shanghai 200082,China)

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]上海第二工业大学资源与环境工程学院,上海201209 [3]北京师范大学附属中学,北京100050 [4]上海市纺织科学研究院有限公司,上海200082

出　　处：《应用化工》2024年第7期1523-1526,共4页Applied Chemical Industry

基　　金：国家自然科学基金——中央高校基础研究基金(2232020A-10);钢铁联合研究基金项目(U1660107)。

摘　　要：利用微纳米气泡气液分散体系耦合陶瓷膜间接氧化吸收甲苯,考察了吸收液初始pH、甲苯浓度、流量对甲苯的氧化吸收效率的影响,并对其反应机理进行了研究。结果表明,中性条件下的吸收液对甲苯的吸收能获得最佳效果,甲苯浓度及气体流量的提高均会导致吸收效率下降,最佳条件为:pH为7.00,甲苯浓度为256.06 mg/cm^(3)及气体流量为150 mL/min,此时甲苯吸收效率能达到95.98%。此外,降解产物及机理分析表明,主要是微纳米气泡释放的·OH对甲苯进行氧化和降解,形成CO_(2)和水,并在液相中予以吸收。Toluene was indirectly oxidized and absorbed by micro-nano bubble gas-liquid dispersion system coupled with ceramic membrane.The effects of initial pH of the absorption liquid,toluene concentration and flow rate on the oxidation and absorption efficiencies of toluene were investigated,and the reaction mechanism was also studied.The results showed that the absorption of toluene in the neutral solution was the best,and the absorption efficiencies decreased with the increase of toluene concentration and gas flow rate.Under the optimal conditions of pH 7.00,toluene concentration 256.06 mg/cm^(3)and gas flow rate 150 mL/min,the absorption efficiency of toluene reached 95.98%.In addition,the degradation products and mechanism analysis showed that·OH released by micro-nano bubbles oxidized and degraded toluene to form CO_(2)and water,and it was absorbed in the liquid phase.

关 键 词：微纳米气泡 陶瓷膜 氧化吸收 甲苯 

分 类 号：TQ031.7[化学工程] X511[环境科学与工程—环境工程]