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Development and characterization of a wire-plate air bubbling plasma for wastewater treatment using nanosecond pulsed high voltage

Ayman A. Abdelaziz, Tatsuo Ishijima, Chedly Tizaoui Orcid Logo

Journal of Applied Physics, Volume: 124, Issue: 5, Start page: 053302

Swansea University Author: Chedly Tizaoui Orcid Logo

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DOI (Published version): 10.1063/1.5037107

Abstract

This study developed a prototype of a wire-plate air bubbling plasma reactor that can be easily scaled up for wastewater treatment. The electrical characteristics, including the discharge current and average power consumed, of the developed reactor were deeply investigated at different operating par...

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Published in: Journal of Applied Physics
ISSN: 0021-8979 1089-7550
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa43487
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spelling 2020-06-17T14:45:24.4617132 v2 43487 2018-08-15 Development and characterization of a wire-plate air bubbling plasma for wastewater treatment using nanosecond pulsed high voltage 4b34a0286d3c0b0b081518fa6987031d 0000-0003-2159-7881 Chedly Tizaoui Chedly Tizaoui true false 2018-08-15 CHEG This study developed a prototype of a wire-plate air bubbling plasma reactor that can be easily scaled up for wastewater treatment. The electrical characteristics, including the discharge current and average power consumed, of the developed reactor were deeply investigated at different operating parameters and solution conductivities. The performance of the reactor was examined on the basis of energy efficiency and methylene blue (MB) decoloration efficiency. Moreover, the removal of the total organic carbon and the changes of the physicochemical properties of solution, including pH, conductivity, and temperature, were evaluated. The analysis of current discharge and average power consumed showed that the discharge mode in the present reactor is a filamentary streamer. Interestingly, the solution conductivity had no effect on the average power consumed at low applied voltages, due to confinement of the discharge in a small area surrounding the discharge electrode in the gas phase. However, at relatively high voltages, the effect of conductivity on the average power consumed was noticeable, yet it had no effect on the decoloration efficiency at the same average power. The present reactor showed a high energy-efficiency value of 42 g/kWh at 50% decoloration of 30 mg/l MB solution, but it dropped to 14 g/kWh at 97% decoloration. A first-order kinetics model described well the decoloration reaction rates and the overall rate constant correlated linearly to the average power. Journal Article Journal of Applied Physics 124 5 053302 0021-8979 1089-7550 31 12 2018 2018-12-31 10.1063/1.5037107 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University EPSRC 2020-06-17T14:45:24.4617132 2018-08-15T14:36:38.4253196 Ayman A. Abdelaziz 1 Tatsuo Ishijima 2 Chedly Tizaoui 0000-0003-2159-7881 3 0043487-17082018084410.pdf Abdelaziz2018.pdf 2018-08-17T08:44:10.4800000 Output 1709381 application/pdf Accepted Manuscript true 2018-08-17T00:00:00.0000000 true eng
title Development and characterization of a wire-plate air bubbling plasma for wastewater treatment using nanosecond pulsed high voltage
spellingShingle Development and characterization of a wire-plate air bubbling plasma for wastewater treatment using nanosecond pulsed high voltage
Chedly Tizaoui
title_short Development and characterization of a wire-plate air bubbling plasma for wastewater treatment using nanosecond pulsed high voltage
title_full Development and characterization of a wire-plate air bubbling plasma for wastewater treatment using nanosecond pulsed high voltage
title_fullStr Development and characterization of a wire-plate air bubbling plasma for wastewater treatment using nanosecond pulsed high voltage
title_full_unstemmed Development and characterization of a wire-plate air bubbling plasma for wastewater treatment using nanosecond pulsed high voltage
title_sort Development and characterization of a wire-plate air bubbling plasma for wastewater treatment using nanosecond pulsed high voltage
author_id_str_mv 4b34a0286d3c0b0b081518fa6987031d
author_id_fullname_str_mv 4b34a0286d3c0b0b081518fa6987031d_***_Chedly Tizaoui
author Chedly Tizaoui
author2 Ayman A. Abdelaziz
Tatsuo Ishijima
Chedly Tizaoui
format Journal article
container_title Journal of Applied Physics
container_volume 124
container_issue 5
container_start_page 053302
publishDate 2018
institution Swansea University
issn 0021-8979
1089-7550
doi_str_mv 10.1063/1.5037107
document_store_str 1
active_str 0
description This study developed a prototype of a wire-plate air bubbling plasma reactor that can be easily scaled up for wastewater treatment. The electrical characteristics, including the discharge current and average power consumed, of the developed reactor were deeply investigated at different operating parameters and solution conductivities. The performance of the reactor was examined on the basis of energy efficiency and methylene blue (MB) decoloration efficiency. Moreover, the removal of the total organic carbon and the changes of the physicochemical properties of solution, including pH, conductivity, and temperature, were evaluated. The analysis of current discharge and average power consumed showed that the discharge mode in the present reactor is a filamentary streamer. Interestingly, the solution conductivity had no effect on the average power consumed at low applied voltages, due to confinement of the discharge in a small area surrounding the discharge electrode in the gas phase. However, at relatively high voltages, the effect of conductivity on the average power consumed was noticeable, yet it had no effect on the decoloration efficiency at the same average power. The present reactor showed a high energy-efficiency value of 42 g/kWh at 50% decoloration of 30 mg/l MB solution, but it dropped to 14 g/kWh at 97% decoloration. A first-order kinetics model described well the decoloration reaction rates and the overall rate constant correlated linearly to the average power.
published_date 2018-12-31T03:54:41Z
_version_ 1763752732876865536
score 11.016235

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