Techno-Economic Assessment for Methane Mitigation through Catalytic Oxidation from Low-Concentration Sources.
- 1Department of Chemical Engineering, KTH Royal Institute of Technology, Stockholm 11428, Sweden.
- 2SINTEF Energy Research, Trondheim 7034, Norway.
Abstract
Mitigating methane emissions is crucial to achieving climate targets by limiting the temperature rise by the end of the century. This study presents techno-economic estimates for methane mitigation from low-concentration sources by two catalytic routes: thermal and photocatalytic oxidation. Methane mitigation costs for inlet concentrations representative of ambient air (2 ppm), waste stream from an air separation unit (4 ppm), air close to wetlands (40 ppm), ventilation stables (300 ppmhighest reported concentration in the literature for stables), and manure storage (1 vol %) are reported. Mitigation costs (using GWP100:28) are inversely proportional to the inlet methane concentration and range between 52 and 186,000 $/t-CO2eq in the thermal route and 48-239,000 $/t-CO2eq in the photocatalytic route for the concentration ranges in this study. We studied the effect of different process-level characteristics on methane mitigation costs. Among other process characteristics, cheap moisture-resistant catalysts and cheap electricity can bring down the costs in the thermocatalytic route, while the availability of sunlight and higher catalytic activity are necessary for photocatalytic routes. Emissions related to electricity use will result in higher methane mitigation costs. Since methane is a short-lived gas in the atmosphere and gets converted to CO2, the assumption around the time frame for global warming potential will also affect the mitigation costs if the costs are reported per t-CO2eq mitigated.
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BibTeX
@article{sirigina2026technoeconomic,
title = {{Techno-Economic Assessment for Methane Mitigation through Catalytic Oxidation from Low-Concentration Sources.}},
author = {Devesh Sathya Sri Sairam Sirigina and Sai Gokul Subraveti and Simon Roussanaly and Rahul Anantharaman and Shareq Mohd Nazir},
journal = {Industrial \& engineering chemistry research},
year = {2026},
month = oct,
doi = {10.1021/acs.iecr.6c02071},
url = {https://europepmc.org/article/MED/42997826},
note = {CC BY},
}
RIS
TY - JOUR
TI - Techno-Economic Assessment for Methane Mitigation through Catalytic Oxidation from Low-Concentration Sources.
AU - Devesh Sathya Sri Sairam Sirigina
AU - Sai Gokul Subraveti
AU - Simon Roussanaly
AU - Rahul Anantharaman
AU - Shareq Mohd Nazir
PY - 2026
DA - 2026/10/21
JO - Industrial & engineering chemistry research
DO - 10.1021/acs.iecr.6c02071
UR - https://europepmc.org/article/MED/42997826
AB - Mitigating methane emissions is crucial to achieving climate targets by limiting the temperature rise by the end of the century. This study presents techno-economic estimates for methane mitigation from low-concentration sources by two catalytic routes: thermal and photocatalytic oxidation. Methane mitigation costs for inlet concentrations representative of ambient air (2 ppm), waste stream from an air separation unit (4 ppm), air close to wetlands (40 ppm), ventilation stables (300 ppmhighest reported concentration in the literature for stables), and manure storage (1 vol %) are reported. Mitigation costs (using GWP100:28) are inversely proportional to the inlet methane concentration and range between 52 and 186,000 $/t-CO2eq in the thermal route and 48-239,000 $/t-CO2eq in the photocatalytic route for the concentration ranges in this study. We studied the effect of different process-level characteristics on methane mitigation costs. Among other process characteristics, cheap moisture-resistant catalysts and cheap electricity can bring down the costs in the thermocatalytic route, while the availability of sunlight and higher catalytic activity are necessary for photocatalytic routes. Emissions related to electricity use will result in higher methane mitigation costs. Since methane is a short-lived gas in the atmosphere and gets converted to CO2, the assumption around the time frame for global warming potential will also affect the mitigation costs if the costs are reported per t-CO2eq mitigated.
SN - 0888-5885
ER -