Energy efficiency improvement in nitric oxide reduction by packed DBD plasma: optimization and modeling using
Fariba Mansouri1, Ali Khavanin2, Ahmad Jonidi Jafari3
1Department of Occupational Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
Environmental Science and Pollution Research International
|February 28, 2020
Summary
Non-thermal plasma (NTP) offers efficient nitric oxide removal. Using ceramic beads in a packed NTP reactor significantly boosts energy efficiency, outperforming empty reactors for better pollutant control.
Area of Science:
- Environmental Engineering
- Plasma Science
- Chemical Engineering
Background:
- Non-thermal plasma (NTP) is a promising technology for atmospheric pollutant removal due to operation at ambient conditions.
- High energy consumption remains a significant challenge for widespread NTP application in pollutant abatement.
- Packed plasma reactors utilizing dielectric materials demonstrate improved energy efficiency compared to empty reactors.
Purpose of the Study:
- To optimize and model the energy efficiency and effectiveness of a non-thermal plasma reactor for nitric oxide removal.
- To investigate the impact of ceramic and glass beads as dielectric materials on NTP performance.
- To determine optimal operating conditions for maximizing energy efficiency in nitric oxide abatement.
Main Methods:
- Utilized Response Surface Methodology (RSM) for optimizing and modeling the NTP reactor.
- Employed a packed plasma reactor filled with ceramic and glass beads.
- Investigated parameters including initial nitric oxide concentration, gas flow rate, and duty cycle (voltage).
Main Results:
- Achieved a maximum energy efficiency of 132.69 g/J under optimal conditions (1050 ppm initial concentration, 2.5 L/min flow rate, 9% duty cycle at 22KV).
- The packed reactor with ceramic beads showed 1.7 times higher energy efficiency compared to an empty reactor.
- Ceramic beads significantly enhanced energy efficiency in nitric oxide removal.
Conclusions:
- The use of ceramic beads as a dielectric material in the discharge space substantially increases energy efficiency for nitric oxide removal.
- Optimized NTP reactor design and operating parameters are crucial for efficient pollutant abatement.
- NTP technology with packed dielectric materials presents a viable solution for environmental remediation.
Keywords:
Air pollution controlDielectric materialsEnergy efficiency improvementNitric oxide reductionPacked DBD plasmaResponse surface methodology
