Journal
CHEMICAL ENGINEERING JOURNAL
Volume 225, Issue -, Pages 567-573Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2013.03.107
Keywords
Carbon bisulfide (CS2); Dielectric barrier discharge (DBD); TiO2 photocatalysis; Attapulgite; Removal efficiency
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Funding
- Scientific Research Foundation for the Returned overseas Chinese Scholars, Ministry of Education of China [2012JYLH0426]
- Key Laboratory of Environmental Science and Engineering of Jiangsu province, China [ZD071202]
- Natural Science Foundation (NSFC) of China [41102023, 41072036]
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The removal of gaseous carbon bisulfide (CS2) in air stream via dielectric barrier discharge (DBD) combined with TiO2 coated attapulgite catalyst was investigated at atmospheric pressure and room temperature. The nano-TiO2/attapulgite photocatalytic composite was prepared by sol-gel method and X-ray diffraction (XRD) analysis evidenced the coating of anatase TiO2 on attapulgite surface. CS2 removal efficiency was examined as a function of TiO2 to attapulgite ratio, catalyst position in DBD reactor, initial CS2 concentration, input power, and gas residence time. The results showed that the addition of TiO2 coated attapulgite with a TiO2-to-attapulgite mass ratio of 3:1 in DBD discharge section could improve CS2 removal efficiency by 10% as compared with bare DBD treatment. Moreover, the possible reaction pathways were proposed based on the products identified by FT-IR. Experimental results demonstrated the potential of DBD-catalyst for odor gas elimination from gas streams. (c) 2013 Elsevier B.V. All rights reserved.
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