Experimental Investigation of Gas Degradation by Methanotrophs at Different Air Flow-rates

Hong Yu, Tao Feng, Ruilin Zhang, Jie Liu

Abstract


A technical approach based on microbial technology is proposed to help resolve the problems caused by explosive gases
in coal mines. The proposed technique uses methanotrophic bacteria to oxidize methane. In laboratory experiments, the
oxidation eect of hanging nets impregnated with liquid containing methanotrophic bacteria was investigated at dierent
air flow-rates. The experimental results showed that the volume of gas degraded and the gradient of degradation both
increased as the gas concentration increased at constant air flow-rates. At fixed gas concentrations, the volume of
degraded gas increased with increasing flow-rates of air at low flow-rates. However, the volume of degraded gas slightly
decreased with increasing flow-rates of air at high flow-rates. These experimental results provide a theoretical basis for
the treatment of explosive gases during exploration for natural gas and to treat potentially dangerous concentrations of
gas in gobs, caves and upper corners of mineshafts. They will also be of great practical significance in coal mining.

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References


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