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XIN Qing (辛青), ZHANG Yi (张轶), WU Kaibin (巫开斌). Degradation of Microcystin-LR by Gas-Liquid Interfacial Discharge Plasma[J]. Plasma Science and Technology, 2013, 15(12): 1221-1225. DOI: 10.1088/1009-0630/15/12/11
Citation: XIN Qing (辛青), ZHANG Yi (张轶), WU Kaibin (巫开斌). Degradation of Microcystin-LR by Gas-Liquid Interfacial Discharge Plasma[J]. Plasma Science and Technology, 2013, 15(12): 1221-1225. DOI: 10.1088/1009-0630/15/12/11
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Degradation of Microcystin-LR by Gas-Liquid Interfacial Discharge Plasma

  • 1 College of Electronic Information, Hangzhou Dianzi University, Hangzhou 310018, China 2 School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China 3 Hangzhou Wahaha Group Co., Ltd., Hangzhou 310012, China

Funds: supported by National Natural Science Foundation of China (Nos.21006017 and 20906079) and Zhejiang Provincial Natural Science Foundation of China (Grant Y5100356)
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  • Received Date: November 06, 2012
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    • Abstract
  • In this study, we report on the degradation of microcystin-LR (MC-LR) by gas- liquid interfacial discharge plasma. The influences of operation parameters such as average input voltage, electrode distance and gas flow rate are investigated. Experimental results indicate that the input voltage and gas flow rate have positive influences on MC-LR degradation, while the electrode distance has a negative one. After 6 min discharge with 25 kV average input voltage and 60 L/h air aeration, the degradation rate of MC-LR achieves 75.3%. H 2 O 2 and O 3 generated by discharge both in distilled water and MC-LR solution are measured. Moreover, an emission spectroscopy is used as an indicator of the processes that take place on the gas-liquid boundary and inside plasma. Varied types of radicals (O, ·OH, CO, O 3 , etc.) are proved to be present in the gas phase during gas-liquid interfacial discharge.
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