Conversion of carbon disulfide in air by non-thermal plasma.
Conversion of carbon disulfide in air by non-thermal plasma.
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DOI：
10.1016/j.jhazmat.2013.07.043
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发表时间：
2013-10
影响因子：
13.6
通讯作者：
Xiao Yan;Yifei Sun;Tianle Zhu;Xing Fan
中科院分区：
文献类型：
--
作者：
Xiao Yan;Yifei Sun;Tianle Zhu;Xing Fan
二硫化碳（CS2）是一种典型的恶臭有机硫化合物，对人体健康有不良影响，对环境有潜在的威胁。本文采用直流电源驱动的齿轮-圆柱等离子体反应器，系统地研究了低温等离子体（NTP）在空气中对CS2的转化。结果表明，电晕放电是一种有效的脱除CS2的方法。CS2转化率随比输入能（SIE）的增加而增加。短寿命物种（如自由基dotO、自由基dotOH）和长寿命物种都对CS2转化有贡献，但短寿命物种起更重要的作用。在CS2的转化过程中形成气态和固态产物。气体产物主要包括CO、CO2、OCS、SO2、SO 3和H2SO 4。随着SIE的增加，CO和CO2的产率增加，OCS和SO2的产率呈钟形变化，而SO 3和H2SO 4的总产率基本不变。由CO 32-、SO 42-和可能的聚合硫组成的固体产物存款在等离子体反应器的内壁和电极上。
Carbon disulfide (CS2), a typical odorous organic sulfur compound, has adverse effects on human health and is a potential threat to the environment. In the present study, CS2conversion in air by non-thermal plasma (NTP) was systematically investigated using a link tooth wheel-cylinder plasma reactor energized by a DC power supply. The results show that corona discharge is effective in removing CS2. The CS2conversion increases with the increase of specific input energy (SIE). Both short-living (e.g. radical dotO, radical dotOH radicals) and long-living species contribute to the CS2conversion, but the short-living species play a more important role. Both gaseous and solid products are formed during the conversion of CS2. Gaseous products mainly include CO, CO2, OCS, SO2, SO3and H2SO4. The yields of CO and CO2increase, the yields of OCS and SO2follow bell curves while the sum yield of SO3and H2SO4remains constant as SIE increases. The solid products, consisting of CO32−, SO42−and possible polymeric sulfur, deposit on the inner wall and electrodes of the plasma reactor.