摘要
为了证明羟基自由基(·OH)在脉冲放电等离子体降解有机物过程中具有重要作用,以苯酚作为目标物,研究了在添加了不同自由基捕收剂条件下,分别以空气和氧气(O2)为载气的脉冲放电等离子体体系中苯酚的降解效率和能量效率,并对相同实验条件下纯水体系中脉冲放电产生的过氧化氢(H2O2)浓度进行了测定。研究结果表明:在空气和O22种载气下,随着添加的捕收剂(Na2CO3和正丁醇)浓度的增加,脉冲放电过程中苯酚的降解效率和能量效率呈下降趋势,证明·OH在脉冲放电降解有机物过程中具有重要作用。此外,添加正丁醇后的H2O2测定结果验证了捕收剂对·OH的捕收作用。
In order to testify the important effect of hydroxyl radicals（· OH） on organic compounds degradation during a pulsed discharge process in aqueous system,by choosing phenol as a target pollutant,the degradation rates of phenol and the energy efficiencies of reaction system were reviewed under different additive collectors when air and O2 were used as bubbling gas,respectively.Under the same experimental conditions,the concentrations of H2O2 produced by pulsed discharge in deionized water were also measured.The experimental results showed that,in the carrier gases of air and O2,the degradation rates of phenol and the energy efficiencies of phenol decreased with the increase of the concentration of addition（both Na2CO3 and n-butanol） during a pulsed discharge process.And the important effect of · OH on organic compounds degradation in the pulsed discharge plasma system was testified.Furthermore,the measurement results of H2O2 proved the collecting effect of collectors on · OH.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2013年第7期1698-1702,共5页
High Voltage Engineering
基金
国家自然科学基金(20377006
21207052)
江苏大学高级专业人才科研启动基金(08JDG041)~~
