The volume of gas production increased during the incubation time for all treatments

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.DWDNXQFLJDVELRPHWDQDELRPHWDQDFDLUDQUXPHQSHQJDUXKVXKXEDNWHULUXPHQELRVWLPXODVL ABSTRACT

This paper is intended to show the effect of temperature on utilization microbes of rumen À uid to produce methane from coal (lignite, sub-bituminous and bituminous). By considering to ¿ eld applications, where the CBM reservoir temperature is higher than the microbes natural living conditions in the cow's body, the experiment is carried out at a temperature of 30ºC and 50ºC with an incubation period time of 105 days. Laboratory scale study was conducted by mixing the coal, formation water and rumen À uid (1:

1: 1). This mixture were inserted into a closed chamber equipped with a hose to measuring the volume of gas produced. The experiment results showed that the microbes of the rumen À uid can grow on different type of coal and temperatures. The volume of gas production increased during the incubation time for all treatments. Obtained the highest methane production occurs at a temperature treatment of 50ºC for the sub-bituminous coal with a volume of 0.627liters/kg (22.14 cf/ton) from the total volume of gas produced as much as 7.25liters/kg (256 cf/ton).

Keyword:methane biogas, biomethane, rumen À uid, temperature effect, microbe, biostimulation

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