Dust resuspension from fabrics exposed to airflow

Jie Feng, Tsz Wai Lai, Sau Chung Fu, Ka Chung Chan, Chun Ho Liu, Christopher Y.H. Chao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

Dust resuspension from four typical fabrics (cotton, linen, silk, and polyester) exposed to airflow with common velocities within 0–10 m/s, including a moving fabric case and a fixed fabric case, was experimentally studied in this article. A set of empirical correlations, involving air velocity, fabric motion mode, fabric type, and airflow duration was developed to describe and predict the moving fabric case. It was found that a stronger-than-expected resuspension was triggered by short-term accelerating airflow. The resuspension enhancement of over 90% was reported for the moving fabrics compared with the fixed ones. Fabric motion induced by airflow was proposed to account for these resuspension findings. Fabric acceleration was then demonstrated to be a key factor in evaluating the resuspension for such a scenario. This article not only reveals an inconspicuous phenomenon of dust resuspension from fabrics under the impact of airflow and consequent fabric motion, but also provides a theoretical basis for particulate matter assessment and regulation.

Original languageEnglish
Pages (from-to)667-680
Number of pages14
JournalAerosol Science and Technology
Volume58
Issue number6
DOIs
Publication statusPublished - 2024

Keywords

  • Andrea Ferro

ASJC Scopus subject areas

  • Environmental Chemistry
  • General Materials Science
  • Pollution

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