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Enhanced Collection Efficiency of Nanoparticles by Electrostatic Precipitator with Needle-Cylinder Configuration

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Nanoparticles produced in industrial processes are conventionally removed by electrostatic precipitators (ESPs). These ESPs usually have an electrode-collector with a wire-cylinder or wire-plate configuration. We designed an ESP with a needle-cylinder configuration and compared its collection performance with that of a conventional ESP. Our ESP exhibited a corona inception voltage of around 3 to 4 kV, which was significantly lower than that of the conventional ESP. The efficiency with which it could collect NaCl particles, which were used as model nanoparticles, was 98% at −5 kV. Unlike with a conventional ESP, soft X-ray irradiation reduced the collection efficiency, probably as a result of the recombination of the positive and negative ions. The corona power ratio was 0.024 W/lpm at a collection efficiency of 98%, showing that our new design produced an extremely efficient ESP. An ESP with a needle-cylinder configuration could be used to collect nanoparticles from a wide range of processes.
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Keywords: Corona Discharge; Electrostatic Precipitator; Fine Particle; Nanoparticle Capture

Document Type: Research Article

Affiliations: 1: Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, MO 63123, USA 2: Department of Mechanical Engineering, Korea Advanced Institute for Science and Technology, Daejeon 305-701, Republic of Korea 3: Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Republic of Korea 4: School of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea 5: Department of Chemical Engineering, College of Engineering, Kyung Hee University, Youngin, 446-701, Republic of Korea 6: School of Civil and Environmental Engineering, Pusan National University, Busan 609-735, Republic of Korea

Publication date: July 1, 2016

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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