Abstract：
:In this work, ammonia (NH3) torrefaction pretreatment (ATP) was developed to optimize the nitrogen and oxygen element distribution of microalgae via the N-doping and oxygen removal reaction, which could obviously improve the potential use of microalgae as a feedstock for the production of N-heterocyclic chemicals through fast pyrolysis technology. The nitrogen content increased from 8.3% of raw microalgae to 11.51% at 300 °C of ATP, while the oxygen content decreased from 35.96% to 21.61%, because of the Maillard reactions. In addition, the nitrogen-doping ratio and oxygen removal ratio of ATP was much higher than the conventional nitrogen torrefaction pretreatment (NTP). With the increase of ATP torrefaction temperature or the pyrolysis temperature, the relative content of the N-containing compounds increased, while the O-containing compounds decreased. For the N-heterocyclic chemicals, higher pyrolysis temperature favored the formation of pyrroles, while inhibited the formation of pyridines and indoles.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Li C,Zhu L,Ma Z,Yang Y,Cai W,Ye J,Qian J,Liu X,Zuo Zdoi
10.1016/j.biortech.2020.124461subject
Has Abstractpub_date
2021-02-01 00:00:00pages
124461eissn
0960-8524issn
1873-2976pii
S0960-8524(20)31735-1journal_volume
321pub_type
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