Yi-Ming Kuo 1, Jhong-Lin Wu2, Jian-Wen Wang1, Li-Te Yin3


Department of Safety Health and Environmental Engineering, Chung Hwa University of Medical Technology, Tainan City 71703, Taiwan
Environmental Resource Management Research Center, Cheng Kung University, Tainan City 70955, Taiwan
Department of Optometry, Chung Hwa University of Medical Technology, Tainan City 71703, Taiwan



Received: May 3, 2018
Revised: July 16, 2018
Accepted: July 17, 2018
Download Citation: ||https://doi.org/10.4209/aaqr.2018.05.0158  

  • Download: PDF


Cite this article:
Kuo, Y.M., Wu, J.L., Wang, J.W. and Yin, L.T. (2018). Pollution Characteristics of Thermal Treatments for Elutriated Ashes. Part 2: Comparison with Incineration System and Plasma Melting System. Aerosol Air Qual. Res. 18: 2695-2703. https://doi.org/10.4209/aaqr.2018.05.0158


HIGHLIGHTS

  • Melting of elutriated incinerator ashes was evaluated.
  • The PCDD/F concentration of the flue gas met the regulated standard in Taiwan.
  • Performance comparison between incineration and plasma melting systems was investigated.

ABSTRACT


This study investigated the pollution characteristics of a plasma melting system and compared its performance with that of the incineration system that was reported in Part 1 of this study. The heavy metals and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in input and output materials during elutriation and plasma melting processes were analyzed. The elutriation process dissolved NaCl and caused an increase in the PCDD/Fs of raw mixed incinerator ashes. After being melted with waste silica gel, the PCDD/F level of elutriated ashes was greatly reduced, and the output mass/input mass ratio was only 0.000188, which was much lower than that of the co-incineration process (0.34). The powdery and porous structure of elutriated ashes was transformed into a glassy amorphous structure after the plasma melting process, and the slag was regarded as a non-hazardous product that can be recycled directly. The concentration of pollutants in the flue gas was much lower than the regulated standards. Although the operational cost of the plasma melting process is higher than that of the incineration process, the plasma melting process has a superior effect on the stabilization of elutriated ashes and is thus a preferable treatment method.


Keywords: Elutriated ash; Stabilization; Slag; Polychlorinated dibenzo-p-dioxin and dibenzofuran; Heavy metal.

 



Don't forget to share this article 

 

Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

Latest coronavirus research from Aerosol and Air Quality Research

2018 Impact Factor: 2.735

5-Year Impact Factor: 2.827


SCImago Journal & Country Rank