The composition of the ash-free organic component of biomass is relatively uniform. The major components are carbon, oxygen, and hydrogen. Most biomass also contains a small proportion of nitrogen and sulphur. Table 1 presents the average range of percentages. The Carbon (C), Hydrogen (H), Oxygen (O), Sulphur(S) and Nitrogen (N) determination in biomass represents the so called elementary analysis. These elements are detected by an elemental analyzer. The resulting composition of biomass affects its combustion characteristics as the total overall mass of the fuel decreases during the volatile combustion phase of the combustion process, as the hydrogen to carbon ratio of the fuel increases and, to a lesser extent, as the oxygen to carbon ratio increases. Nitrogen and Sulphur are significant in the formation of harmful emissions and have an effect on reactions forming ash. The Sulphur and Nitrogen contents reported which are below 1% is a welcome development as there will be minimal release of sulphur and nitrogen oxides into the atmosphere, thereby limiting the polluting effect of the briquettes.
The composition of the ash-free organic component of biomass is relatively uniform. The major components are carbon, oxygen, and hydrogen. Most biomass also contains a small proportion of nitrogen and sulphur. Table 1 presents the average range of percentages. The Carbon (C), Hydrogen (H), Oxygen (O), Sulphur(S) and Nitrogen (N) determination in biomass represents the so called elementary analysis. These elements are detected by an elemental analyzer. The resulting composition of biomass affects its combustion characteristics as the total overall mass of the fuel decreases during the volatile combustion phase of the combustion process, as the hydrogen to carbon ratio of the fuel increases and, to a lesser extent, as the oxygen to carbon ratio increases. Nitrogen and Sulphur are significant in the formation of harmful emissions and have an effect on reactions forming ash. The Sulphur and Nitrogen contents reported which are below 1% is a welcome development as there will be minimal release of sulphur and nitrogen oxides into the atmosphere, thereby limiting the polluting effect of the briquettes.
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