Immobilization of biologically active species on PA-6 foils treated by a dielectric barrier discharge

2003 ◽  
Vol 90 (7) ◽  
pp. 1985-1990 ◽  
Author(s):  
N. Dumitrascu ◽  
G. Borcia ◽  
N. Apetroaei ◽  
G. Popa
Keyword(s):  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Active Species ◽  
Biologically Active ◽  
Dielectric Barrier

scholarly journals Degradation of benzodiazepines using water falling film dielectric barrier discharge reactor

2017 ◽  
Vol 82 (7-8) ◽  
pp. 933-942
Author(s):  
Vesna Radulovic ◽  
Goran Roglic ◽  
Dragan Manojlovic
Keyword(s):  
Dielectric Barrier Discharge ◽  
High Performance ◽  
Degradation Rate ◽  
Barrier Discharge ◽  
Biologically Active ◽  
Array Detector ◽  
Active Pharmaceutical Ingredients ◽  
Dielectric Barrier ◽  
Pharmaceutical Ingredients ◽  
Dbd Reactor

Classical methods of wastewater treatment are often not suitable for the treatment of pharmaceutical waste. The previous studies have shown that the use of the advanced oxidation procedures (AOP) can lead to a more efficient degradation of various biologically active compounds, which are active pharmaceutical ingredients of applied drugs. The aim of this paper is the application of the plasma technology on the degradation of a two active pharmaceutical ingredients (APIs, diazepam and alprazolam) and the finished products (Bensedin? and Ksalol?) using the dielectric barrier discharge (DBD) reactor for AOP. We studied the degradation rate of these pharmaceuticals, depending on the number of passes through the reactor. This degradation method was efficient 61 % for diazepam and 95 % alprazolam. We also examined the influence of the pH adjustment between the passes of APIs through the DBD reactor. The degradation rate of APIs and the finished products was monitored by the high performance liquid chromatography (HPLC) technique, using a photodiode array detector. The concentration of the dissolved ozone was determined using the iodometric procedure.

Monitoring active species in an atmospheric pressure dielectric-barrier discharge: Observation of the Herman-infrared system

2017 ◽  
Vol 57 (2) ◽  
pp. 67-75 ◽  
Author(s):  
Adriana Annušová ◽  
Peter Čermák ◽  
Jozef Rakovský ◽  
Viktor Martišovitš ◽  
Pavel Veis
Keyword(s):  
Dielectric Barrier Discharge ◽  
Atmospheric Pressure ◽  
Barrier Discharge ◽  
Active Species ◽  
Dielectric Barrier

scholarly journals A Study of the Performance of Dielectric Barrier Discharge under Different Conditions for Nitrobenzene Degradation

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 842 ◽  
Author(s):  
Muhammad Imran Nawaz ◽  
Chengwu Yi ◽  
Prince Junior Asilevi ◽  
Tingting Geng ◽  
Muhammad Aleem ◽  
...  
Keyword(s):  
Dielectric Barrier Discharge ◽  
Gas Flow ◽  
Advanced Oxidation Processes ◽  
Barrier Discharge ◽  
Input Power ◽  
Active Species ◽  
Degradation Efficiency ◽  
Energy Yield ◽  
Dielectric Barrier ◽  
Enormous Amount

Water scarcity and water contamination due to the extensive use of organic compounds in industries trigger us to adopt modern techniques for wastewater treatment. In this research, we developed a new dielectric barrier discharge (DBD) system which was evaluated for the degradation of nitrobenzene in water under different experimental arrangements. DBD produces an enormous amount of active species like O3, •O, O2+ and O2− and •OH to degrade the pollutants. In this study, NB (Nitrobenzene) was treated from wastewater by changing the gas flow rate, adopting different carrier gas, by adding inhibitors and promoters and the effect of applied voltage on the production of active species to check the effectiveness of the DBD system. The DBD system was evaluated based on input power, degradation efficiency and energy yield compared with other advanced oxidation processes. The energy yield of the DBD system was 1.253 mg/kWh for the degradation of 20 mg/L of NB to 75% in 60 min with the discharge power of 0.538 W, which displays better results in comparison with the other AOPs regarding energy yield and the degradation efficiency of the pollutant. The results illustrate the significance of the system and further suggest its application to industrial-scale treatment.

scholarly journals Degradation of Methylene Blue via Dielectric Barrier Discharge Plasma Treatment

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1818 ◽  
Author(s):  
Lihang Wu ◽  
Qinglong Xie ◽  
Yongbo Lv ◽  
Zhenyu Wu ◽  
Xiaojiang Liang ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Plasma Reactor ◽  
Chemical Oxidation ◽  
Active Species ◽  
Initial Solution ◽  
Energy Yield ◽  
Dbd Plasma ◽  
Dielectric Barrier

The degradation of methylene blue (MB) using an upgraded dielectric barrier discharge (DBD) plasma reactor was investigated in this paper. Air plasma was generated in the glass bead packed bed in the reactor, which was propagated into MB solution through a microporous diffuser plate. Microdischarge phenomenon can be observed on the interface of MB solution and the diffuser plate, where plasma active species were generated. The effects of air flow rate, initial solution concentration, initial solution pH, and initial solution conductivity on MB degradation were examined. Experimental results indicated that the proposed plasma reactor was effective for MB degradation. No obvious change in MB degradation efficiency was obtained for solution with various initial pH and conductivities, which suggested the potential of the reactor in actual wastewater treatment. The possible mechanism of the generation of plasma active species for MB degradation was proposed. In addition, the total organic carbon removal and chemical oxidation demand removal after 30 min treatment were 38.5% and 48.3%, which was higher than that obtained by ozone. The energy yield for MB degradation reached up to 9.3 g/kWh. Finally, a possible degradation pathway of MB solution was proposed.

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