Laboratory investigation of factors influencing toxic air emissions from applied paints in the indoor environment.
| dc.contributor.author | Aremu, Aminat Damilola. | |
| dc.date.accessioned | 2025-09-25T14:26:24Z | |
| dc.date.available | 2025-09-25T14:26:24Z | |
| dc.date.issued | 2024 | |
| dc.description | xv, 97p. | |
| dc.description.abstract | This study characterized common commercial paints for air pollutants in the indoor environment, and determined emission factors of the identified air pollutants from applied paints. It also modeled emissions of the identified air pollutants and developed a control pathway for toxic air pollutants. These were with a view to determining air pollutants from applied paints in the indoor environment. Some common commercial paints from Nigeria market were selected and characterized using gas chromatography mass spectrometry (GC-MS) and high-performance liquid chromatography (HPLC) analysis. Gaseous and particulates emissions associated with the selected paints were characterized by painting selected experimental chambers using method of spraying painting and air brushes. Experimental measurements of air pollutants associated with the use of the selected commercial paints in indoor environment was carried out using air monitoring equipment. Emission factors of air pollutants were determined using standard mathematical correlations from AP-42. Suitable Specific Models were used to model emissions of toxic air pollutants subject to variables [time (t), temperature (T), relative humidity (RH), total volatile organic compound (TVOC) and particulate matter (PM)]. The obtained concentrations of toxic air pollutants from combinations of the exposed paint and exposure period were compared with the national ambient air quality standards (NAAQs) to determine their level of compliance and also to propose the policy framework for control of paints used in indoor applications in Nigeria. The results of GC-MS and HPLC characterization confirms the presence of VOCs and aromatic hydrocarbons such as benzene, toluene, ethyl-benzene, isomeric xylenes, styrene (BTEXs), phenols and carboxylic acids which constitute a significant class of air pollutants in tested paints. Experimental results showed that toxic air pollutants emissions from selected paints were more concentrated at the source. The design models used showed that pollutants emissions from applied water-based paint followed Quadratic model and that RH, t and PM were significant to particulate matter emission factor (PM-EF) while RH, TVOC and PM were significant to total volatile organic compound emission factor (TVOC-EF). For oil base paint, the design models used showed that pollutants emissions from applied paint followed 2FI model and that T, t, TVOC and PM were significant to particulate matter emission factor (PM-EF) while T, t, TVOC and RH were significant to total volatile organic compound emission factor (TVOC-EF). This study established that for applications in indoor environments, water-based paint is better and safer than oil-based paint with regards to safe period. Also, factors influencing toxic air pollutants emissions from common commercial paints applied in the indoor environment were evaluated. In addition, a quick, easy, and low-cost model was designed to forecast the emissions of toxic air pollutants from paint products in indoor environment based on time and distance. Further, methods and techniques for reducing and controlling toxic air pollutant concentrations from commercial paint applications were highlighted, and current developments to address and enhance indoor air quality (IAQ) were outlined. | |
| dc.identifier.citation | Aremu, A. D. (2024). Laboratory investigation of factors influencing toxic air emissions from applied paints in the indoor environment. Department of Chemical Engineering, Faculty of Technology, Obafemi Awolowo University, Ile-Ife, Nigeria | |
| dc.identifier.other | ror.org/04snhqa82 | |
| dc.identifier.uri | https://ir.oauife.edu.ng/handle/123456789/7019 | |
| dc.language.iso | en | |
| dc.publisher | Department of Chemical Engineering, Faculty of Technology, Obafemi Awolowo University, Ile-Ife, Nigeria | |
| dc.title | Laboratory investigation of factors influencing toxic air emissions from applied paints in the indoor environment. | |
| dc.type | Thesis |