Dynamic process model for carbon sequestration of Casuarina equisetifolia based biomass
Published 2026-09-21
Keywords
- Biomass gasification,
- Operating parameters,
- Temperature Sensing,
- Modelling
Copyright (c) 2026

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Abstract
The paper depicts the process of simulation and application to biomass such as Casuarina equisetifolia to gasify by Aspen Plus with air-blown gasification under reactor temperatures ranging from 700°C to 900°C. The process model included drying, separation, and reaction processes. In this case, the biomass feed rate and air-to-biomass (A/B) ratio were constant, and when the reactor temperature increased, initially, a rise in the hydrogen mass flow rate occurred and then remained constant when the reactor temperature was above 800°C. Concurrently, the carbon dioxide (CO₂) became less, which can be inferred that the essence of the run of the chemical reactions was switched to carbon monoxide (CO) and hydrogen (H₂) being formed, such that the conventional chemical reactions were producing CO₂. As the A/B ratio increased for a fixed temperature of 750°C, the CO₂ concentration increased, though CO and methane (CH₄) decreased, and then the H₂ concentration was approximately steady. Such behavior caused the syngas mass-flow rate to fall when A/B is considerably high; then, syngas constituents would cross over into more complete combustion to produce more CO₂ at the expense of CO and CH₄, as demonstrated in this paper, to indicate significant understanding of the gasification process. This paper provides novel, valuable, nuanced guidance for work on Casuarina equisetifolia, a less-understood and infrequently studied but locally relevant biomass material, while simultaneously addressing the disconnect between equilibrium behaviors and the behavior of reactors found in industrial applications. The unified use of these components is a value-added step that, in their use together, advances the field in the future by providing another accurate, flexible, and practical simulation tool for biomass gasification.
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