Challenges to Developing Methane Biofiltration for Coal Mine Ventilation Air: A Review
2013
Limbri, Hendy | Gunawan, Cindy | Rosche, Bettina | Scott, Jason
Coal mine methane is a significant greenhouse gas source as well as a potential lost energy resource if not effectively used. In recent years, mine ventilation air (MVA) capture and use has become a key element of research and development due to comparatively larger methane emissions by MVA than other coal mine sources. Technologies have been evaluated to treat the low methane concentrations in MVA such as thermal-based technologies or processing by biofiltration. This review initially considers the techniques available for treating the low methane concentrations encountered in MVA, after which it focuses on developments in biofiltration systems. Biofiltration represents a simple, energy-efficient, and cheap alternative to oxidize methane from MVA. Major factors influencing biofilter performance along with knowledge gaps in relation to its application to MVA are identified and discussed.
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