Thermodynamic Analysis of the Effect of Temperature on VOCs Emission from Building Materials

Document Type : Research Article

Authors

Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, P.R. CHINA

Abstract

This study attempts to interpret the physical mechanism of temperature affecting the emission of VOCs from building materials from the viewpoint of thermodynamics. VOCs adsorbed onto building materials are assumed to form a condensed thermodynamic system. The kinetic energy of VOCs molecules takes values from zero to infinite. It is assumed that only VOCs molecules with a kinetic energy greater than the critical value can escape from building materials. Based on the Maxwell velocity distribution function, the correlation between the initial concentration of VOCs within building materials and temperature is derived. By use of the Laplace transform technique and the theorem of the initial value, the correlation between the initial emission factor and temperature is further presented on the basis of the diffusion mechanism. The present thermodynamic model was validated through experimental data in the literature. A good agreement between the present thermodynamic model and experimental data is obtained. The present thermodynamic model can also explain the effect of temperature on the emission of other gases from materials.

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Main Subjects

References

[1] Cox S.S., Little J.C., Hodgson A.T., Predicting the Emission Rate of Volatile Organic Compounds from Vinyl Flooring, Environmental Science & Technology, 36(4): 709–714 (2002).
[2]  Bodalal A., Zhang J.S., Plett E.G., A Method for Measuring Internal Diffusion and Equilibrium Partition Coefficients of Volatile Organic Compounds For Building Materials, Building and Environment, 35(2): 101–110 (2000).
[3] Yang X., Chen Q., Zhang J.S., Magee R., Zeng J., Shaw C.Y., Numerical Simulation of VOC Emissions from Dry Materials, Building and Environment, 36(10): 1099–1107 (2001).
[4] Zhang L.Z., Niu J.L., Modeling VOCs Emissions in a Room with a Single-Zone Multi-Component Multi-Layer Technique, Building and Environment, 39(5): 523–531 (2004).
[5] Xiong J., Zhang Y., Impact of Temperature on the Initial Emittable Concentration of Formaldehyde
in Building Materials: Experimental Observation, Indoor Air, 20(6): 523–529 (2010).
[6] Xiong J., Chen W., Smith J.F., Zhang Y., Zhang J., An Improved Extraction Method to Determine the Initial Emittable Concentration and the Partition Coefficient of VOCs in Dry Building Materials, Atmospheric Environment, 43(26): 4102–4107 (2009).
[7] Xiong J., Yan W., Zhang Y., Variable Volume Loading Method: A Convenient and Rapid Method for Measuring the Initial Emittable Concentration and Partition Coefficient of Formaldehyde and Other Aldehydes in Building Materials, Environmental science & technology, 45(23): 10111–10116 (2011).
[8] Wang X., Zhang Y., A New Method for Determining the Initial Mobile Formaldehyde Concentrations, Partition Coefficients, and Diffusion Coefficients of Dry Building Materials, Journal of the Air & Waste Management Association, 59(7): 819–825 (2009).
[9] Yang X., Chen Q., Zeng J., Zhang J.S., Shaw C.Y., Effects of Environmental and Test Conditions on VOC Emissions from “Wet” Coating Materials, Indoor Air, 11(4): 270–278 (2001).
[10] Zhang Y., Luo X., Wang X., Qian K., Zhao R., Influence of Temperature on Formaldehyde Emission Parameters of Dry Building Materials, Atmospheric Environment, 41(15): 3203–3216 (2007).
[11] Van der Wal, Jan F., Hoogeveen AW, Wouda P., The Influence of Temperature on the Emission of Volatile Organic Compounds from PVC Flooring, Carpet, and Paint, Indoor Air, 7(3): 215–221 (1997).
[12] Wiglusz R., Sitko E., Nikel G., Jarnuszkiewicz I., Igielska B., The Effect of Temperature on the Emission of Formaldehyde and Volatile Organic Compounds (VOCs) from Laminate Flooring - Case Study, Building and Environment, 37(1): 41–44 (2002).
[13] Crawford S., Lungu C.T., Influence of Temperature on Styrene Emission from a Vinyl Ester Resin Thermoset Composite Material, Science of the Total Environment, 409(18): 3403–3408 (2011).
[14] Xiong J., Yao Y., Zhang Y., C-History Method: Rapid Measurement of the Initial Emittable Concentration, Diffusion and Partition Coefficients for Formaldehyde and VOCs in Building Materials, Environmental Science & Technology, 45(8): 3584–3590 (2011).
[15] Xiong J., Wei W., Huang S., Zhang Y., Association between the Emission Rate and Temperature for Chemical Pollutants in Building Materials: General Correlation and Understanding, Environmental Science & Technology, 47(15): 8540–8547 (2013).
[16] Atkins P.W., Physical Chemistry, 6th ed., Oxford University Press (1998).
[17] Deng B., Kim C.N., An Analytical Model for VOCs Emission from Dry Building Materials, Atmospheric Environment, 38(8): 1173–1180 (2004).
[18] Xu Y., Zhang Y., An Improved Mass Transfer Based Model for Analyzing VOC Emissions from Building Materials, Atmospheric Environment, 37(18): 2497–2505 (2003).
[19] Huang H., Haghighat F., Modelling of Volatile Organic Compounds Emission from Dry Building Materials, Building and Environment, 37(12): 1349–1360 (2002).
[20] Lin C-.C., Yu K.-P., Zhao P., Whei-May Lee G., Evaluation of Impact Factors on VOC Emissions and Concentrations from Wooden Flooring Based on Chamber Tests, Building and Environment, 44(3): 525–533 (2009).
[21] Crawford S., Lungu C.T., Influence of Temperature on Styrene Emission from a Vinyl Ester Resin Thermoset Composite Material, Science of the Total Environment, 409(18): 3403–3408 (2011).
[22] Lee Y.-K., Kim H.-J., The Effect of Temperature on VOCs and Carbonyl Compounds Emission from Wooden Flooring by Thermal Extractor Test Method, Building and Environment, 53: 95–99 (2012).
Iranian Journal of Chemistry and Chemical Engineering
Volume 42, Issue 2 - Serial Number 124
February 2023
Pages 558-564

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