Special Issue "Advancement of Understanding of PM2.5 and Hg Emissions and Their Control Technologies for Cleaner Combustion"

Submission Deadline: 30 September 2021 (closed)
Guest Editors
Dunxi Yu, Huazhong University of Science & Technology, China
M. Mercedes Díaz Somoano, Institute of Carbon Science and Technology, INCAR-CSIC, Spain
Shuiqing Li, Tsinghua University, China
Lian Zhang, Monash University, Australia
Changdong Sheng, Southeast University, China
Yongchun Zhao, Huazhong University of Science & Technology, China


In the new era of energy transition to a low carbon future, technologies for air pollutant emission control are the key to enabling solid fuel utilization in the power sector in a more environmental and friendly way. While the acid gases such as SO2 and NOx have long been the focus and the control technologies are in a mature state, it is not until the early 21th century that PM2.5 and Hg emissions from power plants received significant attention. In the past decades, great advances have been achieved in scientific understanding and technology development of controlling PM2.5 and Hg emissions from combustion of various solid fuels (coal, biomass, MSW, etc.). There have been a wide range of technologies available, including separate and co-benefit methods. Some of them have been applied in industries, while some are still under development. This special issue aims to provide an excellent forum for scientists and engineers around the world to share and exchange their latest contributions to the understanding of PM2.5 and Hg emissions and the development of related control technologies. Both original papers and review articles are all welcome.


The scope of the Special Issue covers a broad range of topics. They include but are not limited to:

1. Sampling and analytical methods

2. Measurements and modeling

3. Chemistry and physics

4. Quality assurance and quality control

5. Impacts on the environment and human health

6. Control technologies and strategies, such as

  • Electrostatic Precipitator (ESP, wet or dry)

  • Fabric Filter (FF) or Baghouse (BH)

  • Hybrid ESP-FFs

  • Scrubber (wet or dry)

  • Activated Carbon Injection (ACI)

  • Sorbent Injection

  • Halogen Addition

  • NOx Catalyst

  • Co-benefit Methods of Control

Clean combustion; PM2.5; Mercury; Emission; Control technology; Co-Benefit.

Published Papers
  • HCl-Induced Hg0 Transformation over CuMn2O4 Sorbent
  • Abstract CuMn2O4 spinel has been regarded as a highly efficient sorbent for Hg0 capture from flue gas. The regenerability and recyclability of CuMn2O4 sorbent are mainly associated with the mercury speciation adsorbed on its surface. However, the effect mechanism of HCl on Hg0 transformation over CuMn2O4 sorbent is still elusive. Experiments were conducted to understand the effect of HCl on Hg0 transformation over CuMn2O4 sorbent. The results indicate that CuMn2O4 sorbent is a mesoporous material and possesses a good thermal stability. CuMn2O4 shows >95% Hg0 removal efficiency in a wide temperature window of 50–350°C. The favorable electron-transfer environment caused by the… More
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  • Impacts of Torrefaction on PM10 Emissions from Biomass Combustion
  • Abstract Typical biomass torrefaction is a mild pyrolysis process under conditions of ordinary pressure, low temperature (200–300°C) and inert atmosphere. Torrefaction is considered to be a competitive technology for biomass pretreatment, but its impacts on the emissions of particulate matter from biomass combustion are worthy of further study. In this paper, three kinds of biomass, i.e., bagasse, wheat straw and sawdust were selected for torrefaction pretreatment and the impacts of torrefaction on the emission characteristics of PM10 from biomass combustion were investigated. The combustion experiments were carried out on a drop tube furnace. The combustion-generated particulate and bulk ash samples were… More
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