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	采用强电离放电生成高浓度氧活性粒子溶液; Generating High-concentration Solution of Reactive Oxygen Species by Strong-field Ionization Discharge
	李日红 ; 白敏冬 ; 徐书婧 ; 田一平 ; 李延建 ; 杨海东
	2014-10-31
关键词	强电离放电 介质阻挡放电 氧活性粒子 高级氧化技术 羟基自由基 ROS溶液 strong ionization discharge dielectric barrier discharge reactive oxygen species(ROS) advanced oxidation technologies hydroxyl radical ROS solution
英文摘要	为优化氧活性粒子(rOS)在水中的生成条件,并为rOS溶液生成装置提供优化系统参数的依据,研究了rOS质量浓度在水温、PH值、O2给气体积流量、rOS投加体积质量,以及系统气压(混溶压力)等因素作用下的变化规律。实验中,气态rOS在强电离条件下通过介质阻挡放电生成,以O3计,通过O3检测仪测定其浓度;水中rOS质量浓度采用dPd分光光度法测定,用CrS来表示。实验结果表明:水温、PH值与CrS呈极显著负相关(相关系数P<0.01),rOS投加体积质量与CrS呈极显著正相关(P<0.01),O2给气体积流量与CrS无显著相关性(P>0.05);CrS在水温分别为16℃与24.5℃之间、PH=6.5与PH=7.0之间、O2给气体积流量为2 l/MIn与3 l/MIn之间均为差异不显著(P>0.05),其余各水温、PH值、O2给气体积流量之间均为差异显著(P<0.05)或差异极显著(P<0.01);较低混溶压力下CrS显著升高(P<0.01),20~40 Mg/l rOS投加体积质量下混溶压力与O2给气体积流量交互作用对CrS有显著影响(P<0.01)。分析认为:低温或偏碱性的水体、较大的rOS投加体积质量、较低的混溶压力均有利于提高rOS溶液的质量浓度;水温在低温范围内的改变、水体PH值在偏酸性及偏碱性范围内的改变、O2给气体积流量在较大量输入范围内的变化均会导致CrS的显著变化;较高的rOS投加体积质量下,对rOS溶液质量浓度影响能力由大到小依次为系统气压>O2给气体积流量>系统气压与O2给气体积流量交互作用。; To optimize the generating condition of reactive oxygen species(ROS) in solution, and to provide a reference for improving ROS preparation system, we investigated the effects of several parameters, including solution temperature, solution pH, O2 input, ROS dosages, and system pressure, on the concentration of obtained ROS solution.Gaseous ROS was generated in a strong-field ionization condition induced by under dielectric barrier discharge(DBD), and its dosage represented by O3 was measured by ozone monitor.ROS in solution was caught by DPD(N, N-diethyl-p-pHenylenediamine), which was measured by DPD spectrophotometry, and the concentration of ROS solution was denoted by CRS.According to the experiments, both water temperature and pH have significant negative correlation with CRS(relativefactor P<0.01), ROS dosage has significant correlation with CRS(P<0.01), but O2 input is not significantly correlated with CRS(P>0.05).The differences between CRS are insignificant(P>0.05) under conditions of solution temperature of 16 ℃, 20 ℃, 24.5 ℃, solution pH of 6.5 and 7.0, as well as O2 input of 2 L/min and 3 L/min(P>0.05), but they are highly significant(P<0.01) or significant(P<0.05) under other tested conditions.Moreover, CRS significantly increases with the decrease of miscibility pressure(P<0.01), and it is significantly affected by the interaction between miscibility pressure and O2 input under higher ROS dosages(P<0.01).Lower water temperature, lower pH, higher ROS dosages, and lower miscibility pressure are all beneficial to increasing the concentration of ROS(CRS), which is significantly affected by the change of several parameters including solution temperature in the lower range, pH around 7, O2 input in the range of larger amount, etc.On the condition of high ROS dosage input, CRS is influenced by miscibility pressure, O2 input, and the interaction between miscibility pressure and O2 input in a descending order.; 国家高技术研究发展计划(863计划)(2012AA062609); 国家科技支撑计划(2013BAC06B02); 国家杰出青年科学基金(61025001)~~
语种	zh_CN
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/108328]
专题	环境生态－已发表论文
推荐引用方式 GB/T 7714	李日红,白敏冬,徐书婧,等. 采用强电离放电生成高浓度氧活性粒子溶液, Generating High-concentration Solution of Reactive Oxygen Species by Strong-field Ionization Discharge[J],2014.
APA	李日红,白敏冬,徐书婧,田一平,李延建,&杨海东.(2014).采用强电离放电生成高浓度氧活性粒子溶液..
MLA	李日红,et al."采用强电离放电生成高浓度氧活性粒子溶液".(2014).

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