Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5146176 | International Journal of Hydrogen Energy | 2017 | 8 Pages |
Abstract
The nitrogen transformation with attention to the intermediates and NOx precursors has been investigated during the primary pyrolysis of sewage sludge by using Pyrolyzer-gas chromatography/mass spectrometry (Py-GC/MS) and Pyrolyzer-Fourier transform infrared spectrometry (Py-FTIR). A three-stage process of nitrogen transformation during the sewage sludge pyrolysis was suggested. The decomposition of labile protein and inorganic ammonium salt mainly occurred in the first stage (<300 °C), giving rise to a small amount of NH3. In the second stage (300-600 °C), the macromolecular protein firstly cracked into small molecular amine compounds, and then went through deamination process, contributed to a large release of NH3. In the third stage (600-900 °C), the amine compounds converted into nitriles, and generated a large amount of HCN, while the formation of NH3 slowed down accordingly.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Peng Zhou, Sijiang Xiong, Yuxuan Zhang, Hua Jiang, Yongchao Chi, Lei Li,