Assessment of CO₂ biofixation and bioenergy potential of microalga Gonium pectorale through its biomass pyrolysis, and elucidation of pyrolysis reaction via kinetics modeling and artificial neural network.

ABSTRACT: This study investigates CO₂ biofixation and pyrolytic kinetics of microalga G. pectorale using model-fitting and model-free methods. Microalga was grown in two different media. The highest rate of CO₂ fixation (0.130 g/L/day) was observed at a CO₂ concentration of 2%. The pyrokinetics of the biomass was performed by a thermogravimetric analyzer (TGA). Thermogravimetric (TG) and derivative thermogravimetric (DTG) curves at 5, 10 and 20°C/min indicated the presence of multiple peaks in the active pyrolysis zones. The activation energy was calculated by different model-free methods such as Friedman, Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), and Popescu. The obtained activation energy which are 61.7-287 kJ/mol using Friedman, 40.6-262 kJ/mo

SUBMITTER: Altriki A 

PROVIDER: S-EPMC9434281 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature