Nonthermal plasma technologies offer an innovative approach to the problem of decomposing various volatile organic compounds (VOC's). We focused on dc capillary tube discharge plasma reactors to study the decomposition/destruction efficiency for toluene, EGM, trichloroethane, and trichlroethylene at 50-2300-ppm levels in dry air. The effects of gas flow rate, VOC concentration, and reactor operating conditions on decomposition and analysis of reactant conversion for each VOC were investigated. The results show that VOC destruction efficiency as high as 90% can be achieved, even under a short residence time (3.8 ms) with a destruction energy efficiency of up to 95 g (VOC)/kWh. Laboratory-scale plasma technology was successfully demonstrated for its potential application for VOC control in the semiconductor clean-room environment.

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The authors report 4 cases of Charcot spine treated surgically. In the surgical treatment, combined anterior and posterior with extensive debridement, autogenous bone grafting, and posterior instrumentation is the main therapeutic modality. Some cases with mild bone destruction could be treated by posterior interbody fusion. For the unstable, symptomatic Charcot spine, surgical treatment can provide excellent results.

Nonthermal plasma technologies offer an innovative approach to the problem of decomposing various volatile organic compounds (VOCs). We focused on an AC-energized ferroelectric packed-bed plasma reactor to study the decomposition/destruction efficiency and byproduct analysis for toluene, o-xylene, trichloroethylene, and their mixture from 50 to 230 ppm in dry air. The effects of gas flow rate, concentration, moisture content, and reactor operating conditions on the decomposition and analysis of reactant conversion for each VOC were investigated for suitable applications of the emerging technology. Laboratory-scale packed-bed plasma technology was successfully demonstrated for the application of VOC control in semiconductor clean room environments.