Pyrolysis of microalgal biomass in carbon dioxide environment

The multi-scale challenges of biomass fast pyrolysis and bio-oil upgrading: Review of the state of art and future research directions

“…In recent years, dried algae as a promising pyrolysis feedstock has gained increasing research attention. The processing technologies proposed by researchers include non-catalytic pyrolysis or catalytic pyrolysis systems with microwave or fixed-bed reactors [36][37][38][39][40][41]. An algal cell is composed of a mixture of three different compounds groups (lipids, carbohydrates, and proteins) which can be converted into a range of bioproducts via various pyrolysis reactions.…”

CO2‐Enabled Biomass Fractionation/Depolymerization: A Highly Versatile Pre‐Step for Downstream Processing

“…[107] An enhancement in syngas generation with CO 2 was found to be increased by 3000 %b yt hermald egradation of microalgae at 670 8C, as compared with the identical pyrolysis process in N 2 . [109] The authors, however,i dentified that the effectiveness of CO 2 was independent of dehydrogenation,i nc ontrastt o the typicallyi dentifiedB oudouard reaction. The introduction of CO 2 could also significantly affect the pyrolysis of mixed coal and lignocellulosic biomass (e.g.,c ellulose and hemicellulose) at temperatures of > 550 8C, by reduction of tar to give more syngas with the CO/H 2 ratio being increased by nearly 1200 % at 680 8C.…”

A Mini Review on Pyrolysis of Natural Algae for Bio-Fuel and Chemicals

“…On the other hand, reactive gases were used recently as a substitution for sweep gases, which can further adjust the pyrolysis process [41]. Cho et al [42] investigated the pyrolysis of algae in CO 2 environments and found that the effects of CO 2 initiate at temperatures above 530 • C, directly leading to increased syngas production. The influence of CO 2 atmosphere on the pyrolysis of Microcystis aeruginosa was presented by Jung et al [43].…”