A multisource mass transfer model for simulating VOC emissions from paints

Yan Zhang; Ning Xu; Jiemin Liu; Zhongbao Guo; Hongyan Guan; Yu Bai

doi:10.1016/j.scitotenv.2023.165945

A multisource mass transfer model for simulating VOC emissions from paints

Sci Total Environ. 2023 Dec 1:902:165945. doi: 10.1016/j.scitotenv.2023.165945. Epub 2023 Aug 2.

Authors

Yan Zhang¹, Ning Xu², Jiemin Liu³, Zhongbao Guo⁴, Hongyan Guan⁴, Yu Bai²

Affiliations

¹ School of Science, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing 100044, China. Electronic address: zhangyan1@bucea.edu.cn.
² School of Science, Beijing University of Civil Engineering and Architecture, Beijing 100044, China.
³ Beijing Institute of Graphic Communication, Beijing 102627, China.
⁴ China Testing & Certification International Group Co., Ltd., Beijing 100024, China.

PMID: 37541497
DOI: 10.1016/j.scitotenv.2023.165945

Abstract

Indoor decoration generates a large number of volatile organic compounds (VOCs), which are simultaneously released from different paints. Nevertheless, the interaction mechanism of pollutant diffusion from multisource building materials (such as primer and finish) needs to be examined. In this paper, a multisource mass transfer model for VOC emissions from different combinations of paints is established, and the analytical solution is derived. The finite difference method is used to simulate the experimental results of VOC release in the environmental chambers, and its convergence and stability are verified. Using the optimization parameters of the single-source model and the law of conservation of mass, the key parameters of the multisource mass transfer model are obtained. The results show that the established model is in excellent agreement with both experimental data and literature data. In addition, the Little number Lt is used to analyse the change trend from the initial released concentration in the single-source and multisource models.

Keywords: Environmental chamber experiment; Finite difference method; Initial releasable concentration; Multisource mass transfer model; Volatile organic compounds.