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针-板式介质阻挡放电降解土壤中对硝基苯酚研究

Degradation of p-Nitrophenol in Soil Using Needle-Plate Dielectric Barrier Discharge
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摘要 采用针-板式介质阻挡放电(DBD)产生低温等离子体降解土壤中对硝基苯酚(PNP),考察了放电电压、载气气量、土壤含水率以及土壤pH值对土壤中PNP降解效果的影响。结果表明:针-板式DBD对土壤中PNP有良好的降解效果。在PNP初始浓度400mg/kg,放电电压18 kV条件下,放电处理60 min,PNP降解率达到87.3%。增加放电电压和含水率均能提高降解率。不通入载气,也有较好的降解效果。碱性条件有利于PNP降解。 Non-thermal plasma produced by needle-plate dielectric barrier discharge（DBD） was developed to investigate the degradation of p-nitrophenol（PNP） in soil.Effects of discharge voltage,air flow rate,soil moisture content and soil pH on PNP degradation were evaluated.Experimental results showed that the needle-plate DBD system has a favorable removal efficiency for PNP.About 87.3% of PNP could be removed after 60min DBD decomposition with initial concentration 400 mg/kg and discharge voltage 18 kV.Increasing the discharge voltage and soil moisture content could both improve the degradation efficiency and a better PNP degradation was obtained without air flow rate.Alkaline soil was favorable for PNP removal.
作者 鲁娜 张雪 李杰 王铁成 娄静 吴彦
机构地区 大连理工大学环境学院 工业生态与环境工程教育部重点实验室 大连理工大学静电与特种电源研究所
出处 《环境科学与技术》 CAS CSCD 北大核心 2012年第10期50-52,57,共4页 Environmental Science & Technology
基金 国家自然科学基金项目(40901150)
关键词 介质阻挡放电(DBD) 土壤 对硝基苯酚 降解 dielectric barrier discharge（DBD） soil p-nitrophenol（PNP） degradation
分类号 X53 [环境科学与工程—环境工程]
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参考文献11

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二级参考文献12

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环境科学与技术
2012年 第10期

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