Insights into exergy analysis of air-steam biomass gasification for H2 production via kinetic modeling

Ratnadeep Nath; Ajay Sharma

doi:10.1007/s13399-024-05386-8

Insights into exergy analysis of air-steam biomass gasification for H₂ production via kinetic modeling

Ratnadeep Nath
, Ajay Sharma^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The aim of the research article is to investigate the extraction of maximum usable energy in terms of exergy utilizing gasification of eucalyptus wood sawdust. The physical and chemical exergy and the exergy efficiency of H₂ gas are critically analyzed using surface kinetic modeling which is based on Langmuir-Hinshelwood mechanism. Four important gasification parameters, namely gasification temperature (T = 900–1200 K), equivalence ratio (ER = 0–0.4), steam-to-biomass ratio (SBR = 0–2), and char particle size (Dp = 100–2000 μm), are varied to study their effect on H₂ exergy. The exergy trend for different parameters induced by the chemical reactions involved in the gasification progression is elaborately discussed. The results reveal that exergy is highly influenced by T followed by SBR and ER. In absence of air at T = 1150 K, the highest H₂ yield and the exergy values are obtained by fixing SBR as 0.75 and Dp as 1000 μm.

Original language	English
Pages (from-to)	3891-3901
Number of pages	11
Journal	Biomass Conversion and Biorefinery
Volume	15
Issue number	3
DOIs	https://doi.org/10.1007/s13399-024-05386-8
State	Published - Feb 2025
Externally published	Yes

Bibliographical note

Publisher Copyright:
© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Air-steam gasification
Exergy analysis
Hydrogen
Kinetic modeling
Wood sawdust

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment

Access to Document

10.1007/s13399-024-05386-8

Cite this

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title = "Insights into exergy analysis of air-steam biomass gasification for H2 production via kinetic modeling",

abstract = "The aim of the research article is to investigate the extraction of maximum usable energy in terms of exergy utilizing gasification of eucalyptus wood sawdust. The physical and chemical exergy and the exergy efficiency of H2 gas are critically analyzed using surface kinetic modeling which is based on Langmuir-Hinshelwood mechanism. Four important gasification parameters, namely gasification temperature (T = 900–1200 K), equivalence ratio (ER = 0–0.4), steam-to-biomass ratio (SBR = 0–2), and char particle size (Dp = 100–2000 μm), are varied to study their effect on H2 exergy. The exergy trend for different parameters induced by the chemical reactions involved in the gasification progression is elaborately discussed. The results reveal that exergy is highly influenced by T followed by SBR and ER. In absence of air at T = 1150 K, the highest H2 yield and the exergy values are obtained by fixing SBR as 0.75 and Dp as 1000 μm.",

keywords = "Air-steam gasification, Exergy analysis, Hydrogen, Kinetic modeling, Wood sawdust",

author = "Ratnadeep Nath and Ajay Sharma",

note = "Publisher Copyright: {\textcopyright} The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.",

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AU - Nath, Ratnadeep

AU - Sharma, Ajay

N1 - Publisher Copyright: © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

PY - 2025/2

Y1 - 2025/2

N2 - The aim of the research article is to investigate the extraction of maximum usable energy in terms of exergy utilizing gasification of eucalyptus wood sawdust. The physical and chemical exergy and the exergy efficiency of H2 gas are critically analyzed using surface kinetic modeling which is based on Langmuir-Hinshelwood mechanism. Four important gasification parameters, namely gasification temperature (T = 900–1200 K), equivalence ratio (ER = 0–0.4), steam-to-biomass ratio (SBR = 0–2), and char particle size (Dp = 100–2000 μm), are varied to study their effect on H2 exergy. The exergy trend for different parameters induced by the chemical reactions involved in the gasification progression is elaborately discussed. The results reveal that exergy is highly influenced by T followed by SBR and ER. In absence of air at T = 1150 K, the highest H2 yield and the exergy values are obtained by fixing SBR as 0.75 and Dp as 1000 μm.

AB - The aim of the research article is to investigate the extraction of maximum usable energy in terms of exergy utilizing gasification of eucalyptus wood sawdust. The physical and chemical exergy and the exergy efficiency of H2 gas are critically analyzed using surface kinetic modeling which is based on Langmuir-Hinshelwood mechanism. Four important gasification parameters, namely gasification temperature (T = 900–1200 K), equivalence ratio (ER = 0–0.4), steam-to-biomass ratio (SBR = 0–2), and char particle size (Dp = 100–2000 μm), are varied to study their effect on H2 exergy. The exergy trend for different parameters induced by the chemical reactions involved in the gasification progression is elaborately discussed. The results reveal that exergy is highly influenced by T followed by SBR and ER. In absence of air at T = 1150 K, the highest H2 yield and the exergy values are obtained by fixing SBR as 0.75 and Dp as 1000 μm.

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KW - Hydrogen

KW - Kinetic modeling

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