An online technology for effectively monitoring inorganic condensable particulate matter emitted from industrial plants

Anlin Liu; Jinrun Yi; Xiang Ding; Jianguo Deng; Di Wu; Yaoqiang Huo; Jingkun Jiang; Qing Li; Jianmin Chen

doi:10.1016/j.jhazmat.2022.128221

An online technology for effectively monitoring inorganic condensable particulate matter emitted from industrial plants

J Hazard Mater. 2022 Apr 15:428:128221. doi: 10.1016/j.jhazmat.2022.128221. Epub 2022 Jan 5.

Authors

Anlin Liu¹, Jinrun Yi¹, Xiang Ding², Jianguo Deng³, Di Wu², Yaoqiang Huo¹, Jingkun Jiang³, Qing Li⁴, Jianmin Chen¹

Affiliations

¹ Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention,National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China; Shanghai Institute of Eco-Chongming (SIEC), No. 3663 Northern Zhongshan Road, Shanghai 200062, China.
² Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention,National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
³ State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
⁴ Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention,National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China; Shanghai Institute of Eco-Chongming (SIEC), No. 3663 Northern Zhongshan Road, Shanghai 200062, China. Electronic address: qli@fudan.edu.cn.

PMID: 35007968
DOI: 10.1016/j.jhazmat.2022.128221

Abstract

The concentration of condensable particulate matter (CPM) has gradually exceeded that of filterable particulate matter emitted from industrial plants equipped with advanced air pollution control systems. However, there is still no available online technology to measure CPM emissions. Based on the significant linear correlations (R² > 0.87, p < 3 × 10^-3) between the electrical conductivity (EC) values and ionic mass concentrations of the CPM solutions when the interference of H⁺ was excluded. We developed an online inorganic CPM monitoring system, including a cooling and condensation unit, pH and EC meters, a self-cleaning unit, and an automatic control unit. The CPM mass concentrations obtained by the developed online monitoring system agree well (mean bias 3.8-20.7%) with those obtained by the offline system according to USEPA Method 202 when used in parallel during real-world studies. Furthermore, individual ion mass concentrations of CPMs can even be retrieved separately with a time resolution of one hour when industrial plants are under steady operating conditions. The newly developed system makes the online monitoring of CPM emissions available and lays a foundation for the control of CPM emitted from industrial sources to further improve air quality.

Keywords: Air pollutant control; Electrical conductivity; Inorganic CPM; Online monitoring; Stationary source.

Publication types

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

MeSH terms

Air Pollutants* / analysis
Air Pollution*
Coal / analysis
Environmental Monitoring
Manufacturing and Industrial Facilities
Particulate Matter / analysis
Power Plants
Technology

Substances

Air Pollutants
Coal
Particulate Matter