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- Title
A sustainable thermochemical conversion of animal biomass to N-heterocycles.
- Authors
Tang, Yang; Xiao, Xiao; Zhang, Chaojun; Wang, Xiaoling; Guo, Junling; Liao, Xuepin
- Abstract
The production of high-valued organonitrogen chemicals, especially N-heterocycles, requires artificial N2 fixation accompanied by the consumption of fossil resources. To avoid the use of these energy- and resource-intensive processes, we develop a sustainable strategy to convert nitrogen-rich animal biomass into N-heterocycles through a thermochemical conversion process (TCP) under atmospheric pressure. A high percentage of N-heterocycles (87.51%) were obtained after the TCP of bovine skin due to the abundance of nitrogen-containing amino acids (e.g., glycine, proline, and l-hydroxyproline). Animal biomass with more diverse amino acid composition (e.g., muscles) yielded higher concentrations of amines/amides and nitriles after TCP. In addition, by introducing catalysts (KOH for pyrrole and Al2O3 for cyclo-Gly–Pro) to TCP, the production quantities of pyrrole and cyclo-Gly–Pro increased to 30.79 mg g−1 and 38.88 mg g−1, respectively. This approach can be used to convert the significant animal biomass waste generated annually from animal culls into valued organonitrogen chemicals while circumventing NH3-dependent and petrochemical-dependent synthesis routes.
- Subjects
HETEROCYCLIC compounds; BIOMASS; ORGANONITROGEN compounds; NITRILES; AMINO acids
- Publication
Collagen & Leather, 2023, Vol 5, Issue 1, p1
- ISSN
2731-6998
- Publication type
Article
- DOI
10.1186/s42825-022-00109-z