Performance, optimization, and mechanism of nitric oxide removal by thiourea dioxide/Fe^ⅡEDTA reaction systems  

作　　者：Feiqiang He Xinyu Zhu Xianchun Chen Jianhua Ding 

机构地区：[1]State Key Laboratory for Nuclear Resources and Environment,School of Chemistry,Biology and Materials Science,East China University of Technology,Nanchang 330013,China

出　　处：《Chinese Journal of Chemical Engineering》2020年第11期2918-2927,共10页中国化学工程学报（英文版）

基　　金：supported by National Natural Science Foundation of China(No.21808031)。

摘　　要：In this work,a new innovative absorption system containing both thiourea dioxide(TD)and FeⅡEDTA was used to NO removal.The independently influences of O2 volume concentration,TD concentration,original p H value and absorbent temperature on NO removal in bubbling device were examined preliminarily.The results revealed that the NO removal efficiency firstly increased and then decreased with the increasing of the three independent variables(O2 volume concentration,TD concentration and temperature).However,the NO removal efficiency monotonously increased to some extent with p H value increasing from 6.5 to 10.5.In addition,the respective effects of the four variables and the interactive function of them on NO removal were checked with the response surface methodology(RSM)by central composite design(CCD).The calculative model showed that pH value possessed a main positive independent impact on NO removal.Furthermore,the interactive effects between any two factors were expounded by the 3D surface and counter plots.Finally,the optimum absorption conditions for the maximum NO removal at 94.3%experimentally and 95.8%statistically were obtained in O2 volume content of 6.0%,TD concentration of 0.02 mol·L^-1,original p H value of 10.5 and absorption temperature of 42℃.

关 键 词：Nitric oxide Thiourea dioxide Fe~ⅡEDTA RSM 

分 类 号：X701[环境科学与工程—环境工程]