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Show 17 CO and hydrocarbon emissions increased sharply under the laboratory conditions above about 0.7 equivalence ratio, except for the humus fuel where concentrations began to rise around tf> = 0.6. Differences in the point at which CO and THC emissions begin to increase is likely the result of differences in the fractional bum-out among the fuels due to particle size distribution or particle density, but this was not evaluated directly and also requires further investigation. Acknowledgements The authors appreciate the assistance of Gian Sclippa, Ed Muzio, and Jannelle Bloyd in conducting the MFC experiments. References Baxter, L.L., T.R. Miles, T.R. Miles, Jf., B.M. Jenkins, G.B. Richards and L.L. Oden. 1993. Transfonnations and deposition of inorganic material in biomass boilers. In M.G. Carvalho (ed.), Second international conference on combustion technologies for a clean environment, I:Biomass n 9-15, Commission of European Communities, Lisbon, Portugal. Becker, K.H., K.J. Brockmann, R. Hudepohl, R. Kurtenbach and P. Wiesen. 1992. Fonnation and emission of atmospheric greenhouse gases in the combustion of fossil fuels: monitoring by tunable diode laser spectroscopy. In Grisar, R. H. Bottner, M. Tacke and G. Restelli (eds.), Monitoring of gaseous pollutants by tunable diode lasers, Kluwer Academic Publishers, Dordrecht, Gennany, pp 13 - 19. Bowman, C.T. 1991. Chemistry of gaseous pollutant fonnation and destruction. Chapter 4 in Bartok, W. and A.F. Sarofun (eds.), Fossil fuel combustion. John Wiley and Sons, New York. Grass, S.W. and B.M. Jenkins. 1994. Biomass fueled fluidized bed combustion: atmospheric emissions, emission control devices and environmental regulations. Biomass and Bioenergy (in press). Jenkins, B.M. 1994. Atmospheric pollutant emission factors from open burning of agriCUltural and forest biomass by wind tunnel simulations. Draft final report, CARB Project No. A932-126, California Air Resources Board, Sacramento, California Jenkins, B.M. and S.Q. Turn. 1994. Primary atmospheric pollutants from agricultural burning: emission rate detenninations from wind tunnel simulations. ASAE Paper No. 946008, ASAE, St. Joseph, Michigan. Jenkins, B.M., L.L. Baxter, T.R. Miles, T.R. Miles, Jr., L.L. Oden, R.W. Bryers and E. Winther. 1994. Composition of ash deposits in biomass fueled boilers: results of fullscale experiments and laboratory simulations. ASAE Paper No. 946007, ASAE, St. Joseph, Michigan. |