Related Experiment Video
Updated: Feb 9, 2026

Optimize Flue Gas Settings to Promote Microalgae Growth in Photobioreactors via Computer Simulations
Published on: October 1, 2013
Thallium flows and predominantly exchangeable occurrence in steelwork: New insights from dry flue gas desulfurization
Shuchen Tu1, Hui Huang1, Tianyang Hao1
1SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, School of Environment, South China Normal University, Guangzhou, 510006, China.
Abstract:
Thallium (Tl) pollution poses severe environmental risks, with the steel industry being a significant contributor. However, the behavior and fate of Tl under the rapidly adopted dry flue gas desulfurization (FGD) process remain poorly understood. This study provides the first comprehensive substance flow analysis (SFA) of Tl in a full-scale steel plant utilizing dry FGD. Through integrated field sampling, chemical analysis, SFA, and thermodynamic simulations, we established a complete Tl flow network and elucidated its phase transformation mechanisms. The results revealed a total Tl input/output flux of 3325.50 and 3295.11 mg/t-crude steel, respectively. Notably, coke was identified as a major input source (21.15 %), alongside the circulating sintering head dust (40.62 %). More critically, sequential extraction demonstrated that Tl in dry FGD by-products (e.g., dusts) predominantly exists in the highly mobile and bioavailable exchangeable fraction (>50 %), indicating a substantially higher leaching and ecological risk than previously recognized. The primary output pathways were dust (37.01 %) and exhaust gas (14.34 %). Based on these findings, we evaluated emission reduction potentials via source control (e.g., raw material selection) and end-of-pipe treatment strategies. This work uncovers the unique drivers and heightened environmental risks of Tl in dry FGD steel plants, offering crucial insights for targeted pollution control and sustainable waste management in the evolving steel industry.
Related Concept Videos
Gas Exchange and Transport
Physical Principles Governing Gas Exchange
Gas Laws Governing Respiration
The behavior of gases is guided by Dalton's Law of partial pressures and Henry's Law.
Dalton's Law asserts that the total...
Adiabatic Processes for an Ideal Gas
Social Exchange Theory
Types of Reports II: Incident or Occurrence Report
Purposes:
In the healthcare industry, reports play a crucial role in documenting incidents within an agency. The primary objective of these reports is to ensure patient safety, uphold the...
Kinetic Molecular Theory and Gas Laws Explain Properties of Gas Molecules

