Electrostatic precipitation for NOx emission control in small-scale combustion: A predictive approach and experimental validation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27650%2F25%3A10257542" target="_blank" >RIV/61989100:27650/25:10257542 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1383586625016582#bi005" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1383586625016582#bi005</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.seppur.2025.133061" target="_blank" >10.1016/j.seppur.2025.133061</a>
Alternative languages
Result language
angličtina
Original language name
Electrostatic precipitation for NOx emission control in small-scale combustion: A predictive approach and experimental validation
Original language description
Electrostatic precipitators (ESPs) applied to small-scale combustion systems are effective in reducing Particulate Matter (PM) emissions but also can reduce NOx. However, the absence of a practical predictive model has hindered the widespread adoption of ESPs for this purpose. This study addresses that gap by developing and experimentally validating a simplified mathematical model to predict NOx removal efficiency in ESPs operating with both positive and negative corona discharges. The model captures the unique plasma chemistry of DC corona—specifically the spatially non-uniform generation of active species and the key chemical kinetics that drive NOx conversion. To validate the model, an ESP was integrated with a 5-kW pellet stove and tested under varying operational regimes. Under standard conditions (0 °C and 101.3 kPa), NOx concentrations were reduced from 200 mg/m3 to 44 mg/m3 using positive polarity and to 46 mg/m3 using negative polarity, achieving an overall removal efficiency of 78 % in both cases. However, the specific input energy for positive corona (35.7 J/L) was lower than that for negative corona (48.4 J/L). With prediction accuracies within 10 % of the experimental measurements, the model demonstrates robust reliability for practical engineering. This research advances efficient, cost-effective NOx control techniques in ESPs, and has the potential to promote the reduction of global pollution.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20700 - Environmental engineering
Result continuities
Project
<a href="/en/project/SS02030031" target="_blank" >SS02030031: Air quality Research, Assessment and Monitoring Integrated System</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Separation and Purification Technology
ISSN
1383-5866
e-ISSN
1873-3794
Volume of the periodical
368
Issue of the periodical within the volume
17 September 2025
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
13
Pages from-to
1-13
UT code for WoS article
001475783200001
EID of the result in the Scopus database
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