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

Download

Thesis_HazalBaskoy_Basım (1).pdf

Date

2022-8-19

Author

Başköy, Melek Hazal

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

292
views

86
downloads

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

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

A Data-Driven Approach to Control Fugitive Dust in Mine Operations Kahraman, Muhammet Mustafa; Erkayaoğlu, Mustafa (2020-09-01) Particulate matter (PM) is one of the main actors related to air pollution caused by surface mining. Fugitive dust, considered as particulate matter that cannot be collected by conventional measures, is classified by the particle size. The Environmental Protection Agency (EPA) categorizes PM as coarse and fine particles based on the particle size being less than 10 mu m (PM10) and less than 2.5 mu m (PM2.5). Basic operations of surface mining such as drilling and blasting, loading, haulage, and processing a...
Investigation of Turkey's carbon dioxide problem by numerical modeling Can, Ali; Tokdemir, Turgut; Department of Engineering Sciences (2006) CO2 emission is very important, because it is responsible for about 60% of the "Greenhouse Effect". The major objectives of this study were to prepare a CO2 emission inventory of Turkey based on districts and provinces by using the fuel consumption data with respect to its sources, to find the CO2 uptake rate of forests in Turkey based on provinces and districts, and to estimate the ground level concentration of CO2 across Turkey using U.S. EPA's ISCLT3 model for the preparation of ground level concentratio...
A geochemical equilibrium modeling approach to assessing soil acidification impacts due to depositions of industrial air emissions Ünlü, Kahraman; Soyupak, S; Yurteri, C (1999-07-01) Soil acidification impacts arising from depositions of industrial air emissions may become a serious environmental concern. Currently, in the literature quantitative mechanistic modeling and the experimental acid neutralizing capacity (ANC) approach and a qualitative evaluation approach classifying soils into various levels of sensitivity to acid additions have been reported to assess the long-term soil acidification impacts due to industrial air emissions. Another alternative quantitative approach proposed...
Development of pollution indices for the middle section of the Lower Seyhan Basin (Turkey) GÖLGE, Mehmet; YENİLMEZ, Firdes; Aksoy, Ayşegül (2013-06-01) Pollution indices aggregate concentrations of several water or air quality parameters into a single quantity to indicate the general status of pollution in a region. Several pollution index models are present in literature. However, their application for different cases may require modifications based on implementation goals and available data. In this study, modified pollution indices were used to evaluate the pollution status in the middle section of the Lower Seyhan River Basin by employing a geographica...
Local air quality impacts due to downwash around thermal power plants: Numerical simulations of the effect of building orientation Kayın, Serpil; Tuncel, Süleyman Gürdal; Yurteri, Coşkun (1999-09-01) One of the primary adverse environmental impacts associated with power generation facilities and in particular thermal power plants is local air quality. When these plants are operated at inland areas the dry type cooling towers used may significantly increase ambient concentrations of air pollutants due to the building downwash effect. When one or more buildings in the vicinity of a point source interrupt wind flow, an area of turbulence known as a building wake is created. Pollutants emitted from relative...

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.