Abstract
Increasing concerns about fossil fuels availability and environmental risks, like greenhouse gas CO2, pollutants SO2, NOx, heavy metals, are promoting the development of renewable energy. Rising bioenergy share in the power generation sector is strongly promoted all over the world. Biomass combustion has become one of the most promising technologies for large-scale utilization of biomass, which can help to decrease the dependence on fossil fuels and realize CO2 reduction. NOx emission from biomass combustion has direct correlations with haze formation. In order to meet increasingly strict environmental standard, much attention has been focused on NOx reduction with the development of biomass-power generation.Understanding and predicting fuel-nitrogen conversion during biomass pyrolysis is critical and continues to be a challenge for understanding formation and reduction of NOx and N2O during biomass combustion. This review examines the-state-of-the-art of nitrogen transformation mechanism during biomass pyrolysis. Proteins/amino acids, which are the nitrogen functionalities in biomass, decompose dependently of other constituents in biomass. The data obtained from pyrolysis of amino acid with the components in biomass are useful in predicting nitrogen conversion of biomass. Finally, directions for future research are suggested.
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