Emission Characteristics of PM10 during Sewage Sludge Combustion

Received: October 5, 2011
Revised: February 2, 2012
Accepted: February 2, 2012
Download Citation: RIS|BibTeX|https://doi.org/10.4209/aaqr.2011.10.0164  

Cite this article:
Ye, W., Han, J., Qin, L., Li, Y., Masami, F. and Yao, H. (2012). Emission Characteristics of PM10 during Sewage Sludge Combustion. Aerosol Air Qual. Res. 12: 420-425. https://doi.org/10.4209/aaqr.2011.10.0164

ABSTRACT

Combustion of sewage sludge was conducted in a laboratory-scale drop tube furnace to investigate the emission characteristics of PM₁₀ (particles with the aerodynamic diameter smaller than 10 μm). The experiment temperature was varied from 1173 to 1573 K. The results show that the emissions of submicron particulate matters (PM₁, particles with the aerodynamic diameter smaller than 1 μm) and supermicron particulate matters (PM_1–10, particles with aerodynamic diameter ranging from 1 μm to 10 μm) both decrease with temperature increasing. Meanwhile, the morphology of PM₁₀ was also analyzed by X-ray fluorescence (XRF) and scanning electron microcopy (SEM) to further understand its formation mechanisms. The results indicate that PM1 is mainly formed from the vaporization and condensation process and its major elemental compositions are Na, S and P, while the agglomeration of melting minerals and the fragmentation of minerals contribute to PM_1–10, which is chiefly composed of Si, Al and Ca.

Keywords: Sewage sludge; Combustion; PM10