A study on co-pyrolysis of bagasse and sewage sludge using TG-FTIR and Py-GC/MS

• Published in: Energy conversion and management 2017-11, Vol.151, p.190-198
• Main Authors: Lin, Yan, Liao, Yanfen, Yu, Zhaosheng, Fang, Shiwen, Ma, Xiaoqian
• Format: Article
• Language: English
• Subjects: Acetic acid; Ammonia; Aromatic compounds; Bagasse; Benzene; Carbon dioxide; Co-pyrolysis; Decomposition; Furfural; Inspection; KBr-Tabletting based FTIR; Py-GC/MS; Pyrolysis; Pyrolysis products; Sewage sludge; Sludge; Temperature; TG-FTIR; Water treatment
• ISSN: 0196-8904; 1879-2227
• DOI: 10.1016/j.enconman.2017.08.062

[Display omitted] •Gauss-Lorentz Amplitude function was adopted to the FTIR fitting analysis.•The evolution of six typical pyrolysis products were illustrated by TG-FTIR.•Contents of five possible products for mixture pyrolysis were analyzed via Py-GCMS.•The contents of NH3, HCN, acid, furfural and C7# reduced in co-pyrolysis. In this paper, the pyrolysis process of mixed samples, bagasse with the addition of sludge, were investigated by TG-FTIR, and Py-GC/MS. For the mixed samples, the proportions of sludge were 10%, 30% and 50%. With the sludge ratio increased, the initial temperature and the terminated temperature increased. Eleven chemical structure groups were resolved from both of bagasse and sludge by KBr-Tabletting based FTIR analysis. Aromatic compounds, CO2, CO, CO, NH3 and HCN were the major gaseous products surveyed from the TG-FTIR inspection. The percentage of pyrolysis products (acetic acid, C7#, furfural, benzene derivatives, C7P) were figured out from Py-GC/MS analysis. The addition of sludge was beneficial for the production of group C7P, whose carbon atoms exceeded 7. This research provided useful background knowledge for co-pyrolysis of bagasse and sewage sludge.