Effect of Inorganic Salts on Product Composition During Pyrolysis of Black Spruce


  • Mamdouh M. Nassar
  • Ali Bilgesu
  • G. D. M. MacKay


Black spruce, pyrolysis, inorganic salts


The effect of inorganic salts on the pyrolysis of black spruce sawdust was determined in the temperature range 400-500 C under 2-mm Hg vacuum.

The major pyrolysis products were: a char residue; light and heavy liquid fractions; volatiles (CH4, C2H4, C2H6, and C3H6); and gases (H2, CO, and CO2). Experiments on untreated and treated sawdust show that salts reduce the proportion of flammable tars, volatiles and gases, and increase the proportion of char.


Brown, F. L. 1958. Theories of the combustion of wood and its control. U.S. Forest Prod. Lab. Rep. 2136.nBrown, F. L., and W. K. Tang. 1963. The effect of various chemicals on the thermogravimetric analysis of ponderosa pine. U.S. Forest Serv. Res. Pap. FPL6.nMacKay, G. D. M. 1968. Effect of inorganic salts on the pyrolysis of cellulose. For. Prod. J. 5(18):71-75.nMartin, S. 1965. Diffusion controlled ignition of cellulosic material by intense radiation energy. Tenth Symposium on Combustion, pp. 877-896. The Combustion Institute, Pittsburgh.nShafizadeh, F., A. G. W. Bradbury, W. F. DeGroot, and T. W. Anerud. 1982. Role of inorganic additives in the smoldering combustion of cotton cellulose. Ind. Eng. Chem. Prod. Res. Dev. 21:97-101.nTang, W. K., and H. W. Eickner. 1968. Effect of inorganic salts on pyrolysis of wood, cellulose and lignin determined by DTA. U.S. Forest Serv. Res. Pap. FPL82.n






Research Contributions