Title :
Study on Physicochemical Characteristics of Municipal Solid Waste Incineration (MSWI) Fly Ash
Author :
Haiying, Zhang ; Youcai, Zhao
Author_Institution :
Dept. of Chem. Eng., Shanghai Inst. of Technol., Shanghai, China
Abstract :
This study aims to develop a methodology for analysis of physicochemical characteristics of municipal solid waste incineration (MSWI) fly ash. In this work, microstructure, particulate size distribution and components of fly ash were investigated using SEM, laser particulate description analyzer, ICP, XRF, IR and XRD. It is found that content of chemical components follows sequence of CaO > SiO2 > Al2O3 > Fe2O3 > MgO > K2O > Na2O, and fly ash registers a SiO2-Al2O3-metal oxides system as total content of these oxides exceeds 80%. Major mineralogical components of fly ash involve SiO2, CaCl2, Ca3Si2O7, Ca2SiO4ldr0.35H2O, Ca9Si6O21ldrH2O, K2Al2Si2O8ldr3.8H2O and AlCl3ldr4Al(OH)3ldr4H2O. Glass phases account for around 57%, which is conducive to reduction of energy consumption in recycling of the ash.
Keywords :
X-ray diffraction; X-ray fluorescence analysis; fly ash; incineration; recycling; scanning electron microscopy; AlCl; Ca9Si6O21; H2O; ICP; IR; K2Al2Si2O8; SEM; XRD; XRF; energy consumption reduction; laser particulate description analyzer; mineralogical components; municipal solid waste incineration fly ash; particulate size distribution; physicochemical characteristics; recycling; Chemical lasers; Energy consumption; Fly ash; Glass; Incineration; Iron; Laser theory; Microstructure; Solids; X-ray scattering; MSWI fly ash; microstructure; mineral content; physicochemical characteristics; radical content;
Conference_Titel :
Environmental Science and Information Application Technology, 2009. ESIAT 2009. International Conference on
Print_ISBN :
978-0-7695-3682-8
DOI :
10.1109/ESIAT.2009.33
