如今是有很多种方法来制造生物燃料，但多数情况下还是采用化学反应，发酵和热能来分解植物中的淀粉、糖分以及其他分子。
There are various ways of making biofuels, but they generally use chemical reactions, fermentation, and heat to break down the starches, sugars, and other molecules in plants.
在制曲及发酵前期，如没有外界提供的热能，细胞的酶难以激活，微生物难以生育。
In starter-making and prior period of fermentation, without heat energy provided by outside environment, enzymes in cells hardly activate and microbes rarely breed.
应用甘蔗糖厂的固体废物蔗渣、 炉渣、烟灰、滤泥和高浓度糖蜜酒精废液，采用堆肥发酵的方法，进行了利用生物热能蒸发处理糖蜜酒精废液的实验。
The filter sludge, bagasse, chimney ashes, slag and alcohol waste liquid were used for compost test. The compost bioenergy was applied to evaporate the waste liquid.
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