THE USE OF CONDUCTIVE NANOMATERIAL-DECORATED FILTERS FOR IMPROVEMENT OF INDOOR AIR QUALITY BY PARTICULATE MATTER FILTRATION

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2022-8-19

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Başköy, Melek Hazal

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Particulate matter (PM) is one of the six criteria air pollutants that is of greatest concern to air quality. In order to control PM pollution, highly effective air filters are required. The shortcomings of conventional filtration methods have led to the development of effective filtration strategies. In this study, the utilization of two different nanomaterial-decorated nylon mesh filters was investigated. Silver nanowire (Ag NW) and two-dimensional titanium carbide (Ti3C2Tx) MXene were selected due to their high electrical conductivity as well as their high specific surface area. The performances of the filters at different air velocities (0.45 m/s and 1.02 m/s) and voltages (2.5 V, 5 V, 7.5 V, and 10 V) were investigated. The best PM removal performance for both filter types was obtained when the applied voltage was 10 V and the air velocity was 1.02 m/s. Ag NW-decorated filters had mass concentration-based removal efficiencies of 90.98% and 96.11% for PM2.5 and PM10, respectively. They showed number concentration-based removal efficiencies of 70.98% and 71.21% for PM2.5 and PM10, respectively. Based on mass concentration, MXene-decorated filters had removal efficiencies of 90.05% and 95.44% for PM2.5 and PM10, respectively. They showed number concentration-based removal efficiencies of 70.37% and 70.58% for PM2.5 and PM10, respectively. Since air filters with multifunctional performance are desired, tests of some parameters (reusability, repeatability, and 2-hour filtration) were also carried out. Considering the observed removal efficiencies, low pressure drops, and multifunctional performances, these nanomaterial-decorated filters are promising filters for air filtration, but improvements are still needed.

Subject Keywords

Air pollution, Particulate matter, -Air filtration, Silver nanowires, MXene

URI

https://hdl.handle.net/11511/99739

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

M. H. Başköy, “THE USE OF CONDUCTIVE NANOMATERIAL-DECORATED FILTERS FOR IMPROVEMENT OF INDOOR AIR QUALITY BY PARTICULATE MATTER FILTRATION,” M.S. - Master of Science, Middle East Technical University, 2022.