Abstract

Methane, the primary component of natural gas, is a significant contributor to global warming and climate change. It is a harmful greenhouse gas with an impact 28 times greater than carbon dioxide over a 100-year period. Preventing methane leakage from transmission pipelines and other oil and gas production activities is a possible solution to reduce methane emissions. In order to detect and resolve methane leaks, reliable and cost-effective sensors need to be researched and developed. This paper provides a comprehensive review of different types of methane detection sensors, including optical sensors, calorimetric sensors, pyroelectric sensors, semiconducting oxide sensors, and electrochemical sensors. The discussed material includes the definitions, mechanisms and recent developments of these sensors. A comparison between different methods, highlighting the advantages and disadvantages of each, is also presented to help address future research needs.

Highlights

  • Methane (CH4 ), a flammable gas that lacks both odour and colour, is the primary component of natural gas

  • This paper provides a comprehensive review of five different types of methane sensor, which are optical sensors, calorimetric sensors, pyroelectric sensors, semiconducting metal oxide sensors, and electrochemical sensors, as they are more common for methane detection

  • Methane is the primary component of natural gas

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Summary

Introduction

Methane (CH4 ), a flammable gas that lacks both odour and colour, is the primary component of natural gas. Despite its negative impacts on the environment, natural gas is coveted for its abundance and clean burning process, and will continue to be used widely in the future [5] It replaces coal, especially in the USA power field, due to the lower CO2 emissions compared to coal in the combustion process and the lower production cost [6]. This paper provides a comprehensive review of five different types of methane sensor, which are optical sensors, calorimetric sensors, pyroelectric sensors, semiconducting metal oxide sensors, and electrochemical sensors, as they are more common for methane detection.

Optical Sensors
Calorimetric Sensors
Calorimetric
Pyroelectric Sensors
Semiconducting Metal Oxide Sensors
Electrochemical
Comparison of Methane Sensors and Discussion of Future Challenges
Findings
Conclusions

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