Evalution of elemental mercury removal by different adsorbents

9^th World Convention on Recycling and Waste Management

October 22-23, 2018 Osaka, Japan

Hsing-Wang Li, Chyi-Woei Young, Wen-Chang Chen and Chi-Liang Chen

China Steel Corporation, Taiwan

Scientific Tracks Abstracts: J Environ Anal Toxicol

Abstract :

Mercury is regarded as the hazardous air pollutant and it exists in coal combustion flue gas in different forms, such as particle-bound mercury, oxidized mercury and elemental mercury (Hg0) that is difficult to collect by existing air pollution control devices due to its highly volatile and nearly insoluble in water. Adsorption has excellent potential for Hg0 removal from flue gases. This study aims to evaluate Hg0 removal by two types of adsorbents in a lab-scale reactor. At influent Hg0 concentration of 0.89~0.91 μg/m3, the Hg0 removal was 28.4% by molecular sieve at a Space Velocity (SV) of 12,000 hr-1, while 45.3% Hg0 removal under the condition of 9,000 hr-1. On the other hand, the Hg0 removal by activated carbon increased from 97.9% to 99.3% as SV decreased from 12,000 to 9,000 hr-1. Therefore, the SV played an important role on the Hg0 adsorption. In summary, the Hg0 removal by activated carbon at a low SV can achieve over 99%.

Biography :

Hsing-Wang Li is currently working as an Air Pollution Control Engineer at China Steel Corporation. His work is to reduce air pollutant emission from any possibile sources during the production line.

E-mail: 175885@mail.csc.com.tw