School of Chemistry and Environment, Beihang University, Beijing 100191, China.
J Hazard Mater. 2013 Oct 15;261:669-74. doi: 10.1016/j.jhazmat.2013.07.043. Epub 2013 Jul 31.
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, CS2 conversion 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 CS2 conversion increases with the increase of specific input energy (SIE). Both short-living (e.g. O, OH radicals) and long-living species contribute to the CS2 conversion, 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, SO3 and H2SO4. The yields of CO and CO2 increase, the yields of OCS and SO2 follow bell curves while the sum yield of SO3 and H2SO4 remains constant as SIE increases. The solid products, consisting of CO3(2-), SO4(2-) and possible polymeric sulfur, deposit on the inner wall and electrodes of the plasma reactor.
二硫化碳（CS2）是一种典型的有臭味的有机硫化合物，对人体健康有害，同时也是一种潜在的环境威胁。在本研究中，采用直流电源激励的链齿轮-缸体等离子体反应器对空气中的 CS2 通过非热等离子体（NTP）转化进行了系统研究。结果表明，电晕放电对去除 CS2 是有效的。CS2 的转化率随比输入能量（SIE）的增加而增加。短寿命（如 O、OH 自由基）和长寿命物质都有助于 CS2 的转化，但短寿命物质发挥着更重要的作用。在 CS2 的转化过程中形成了气态和固态产物。气态产物主要包括 CO、CO2、OCS、SO2、SO3 和 H2SO4。随着 SIE 的增加，CO 和 CO2 的产率增加，OCS 和 SO2 的产率呈钟形曲线，而 SO3 和 H2SO4 的总和产率保持不变。固态产物由 CO3(2-)、SO4(2-)和可能的聚合硫组成，沉积在等离子体反应器的内壁和电极上。
