Effect of trichome structure of Tillandsia usneoides on deposition of particulate matter under flow conditions

Jeong Jae Kim; Jaehyun Park; Sung Yong Jung; Sang Joon Lee

doi:10.1016/j.jhazmat.2020.122401

Effect of trichome structure of Tillandsia usneoides on deposition of particulate matter under flow conditions

J Hazard Mater. 2020 Jul 5:393:122401. doi: 10.1016/j.jhazmat.2020.122401. Epub 2020 Feb 24.

Authors

Jeong Jae Kim¹, Jaehyun Park², Sung Yong Jung³, Sang Joon Lee⁴

Affiliations

¹ Department of Mechanical Engineering, Hanbat National University, Daejeon, South Korea.
² Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, South Korea.
³ Department of Mechanical Engineering, Chosun University, Gwangju, South Korea.
⁴ Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, South Korea. Electronic address: sjlee@postech.ac.kr.

PMID: 32155521
DOI: 10.1016/j.jhazmat.2020.122401

Abstract

The removal of particulate matters (PM) has emerged as one of the most significant issues in public health and environment worldwide. Environmentalists have proposed the use of indoor air-purifying plants as an eco-friendly strategy to resolve PM-related problems and effectively remove fine particulate matter (PM_2.5). Among air-purifying plants, Tillandsia usneoides (L.) L. (T. usneoides) has been used as a biomonitor for heavy metals and air pollutants. However, the PM removal effect of T. usneoides and its primary mechanism remain unclear. Here, we investigated the PM removal performance of T. usneoides in a closed chamber under flow conditions, the effects of trichomes, and the array density according to the different types of PM. The chamber with bulk T. usneoides under flow conditions exhibited 16.5 % and 9.2 % higher removal efficiency in PM_2.5T. usneoides for incense and A1 rigid PM, respectively, than that without T. usneoides. T. usneoides with trichome structure exhibited larger removal efficiencies of 7% and 2% in PM_2.5 and PM₁₀, respectively, than without trichome for incense particles. In addition, the increase in total effective surface was effective for the deposition of both PM types. The increase in effective surface area by trichome structure and array density of T. usneoides is a crucial factor for the deposition of PM.

Keywords: PM removal; Particulate matter; Tillandsia usneoides; Trichome.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Air Pollutants / chemistry*
Microscopy, Electron, Scanning
Particulate Matter / chemistry*
Plant Leaves / anatomy & histology
Plant Leaves / chemistry
Plant Leaves / ultrastructure
Surface Properties
Tillandsia* / anatomy & histology
Tillandsia* / chemistry
Tillandsia* / ultrastructure
Trichomes* / anatomy & histology
Trichomes* / chemistry
Trichomes* / ultrastructure

Substances

Air Pollutants
Particulate Matter