Premium
Pore structure and fractal analysis for char of sludge blended with calcium magnesium acetate during pyrolysis process
Author(s) -
Zhang Lihui,
Huang Yaji,
Duan Feng
Publication year - 2016
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.1997
Subject(s) - pyrolysis , char , magnesium , chemical engineering , materials science , bet theory , specific surface area , fractal dimension , isothermal process , sewage sludge , fractal , mineralogy , sewage treatment , chemistry , metallurgy , organic chemistry , environmental engineering , thermodynamics , environmental science , mathematical analysis , physics , mathematics , adsorption , engineering , catalysis
The changes in pore structure characteristics of sewage sludge blended with calcium magnesium acetate (CMA) during pyrolysis process were investigated. Sludge and its blended fuel with CMA were characterized by N 2 isothermal absorption method, and the data were used to analyze the fractal properties of the obtained samples. Results show that pyrolysis temperature has notable impact on the pore structure and morphology of both samples. The Brunauer–Emmett–Teller (BET) specific surface area ( S BET ) of both samples increases greatly as the temperature increases from 400 to 600 °C, and these values decrease little at higher temperature. Average pore diameter of both samples shows the inverse trends with those of BET specific surface area. Pore structure and surface morphology are both developed at lower temperature range leading to the increase of fractal dimensions ( D 1 and D 2 ), indicating an increase in the surface and space roughness of samples. © 2016 Curtin University of Technology and John Wiley & Sons, Ltd.