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首页> 外文期刊>African Journal of Biotechnology >Water and energy saving bioprocess for bioethanol production from corn grain applying stillage liquid part recirculation
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Water and energy saving bioprocess for bioethanol production from corn grain applying stillage liquid part recirculation

机译：利用釜馏液体部分再循环从玉米谷物生产生物乙醇的节水节能生物工艺

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摘要

The distillery stillage is a major and arduous byproduct generated during ethanol production in distilleries. The liquid part of this stillage was proved that can be recycled in the ethanol production from corn, without disturbing the fermentation process. The corn seeds were fermented employing the conventional non-pressure method for gelatinizing as well as including a novelty: Recirculation system of distillery stillage liquid part instead of process water. The efficiency of fermentation and main chemical parameters of stillage were estimated. The liquid part of stillage was recycled 28 times. At these conditions distillery yeast?Saccharomyces cerevisiae?efficiently produced ethanol yielding 79.80% of the theoretical, keeping the vitality and quantity on the same level. However, recirculation of the liquid part of stillage caused protein and potassium increase in the wet cake what makes this product more attractive for fodder supplementation. It was proven that the addition of stillage liquid fraction to the mashing process instead of process water and 28 recirculation cycles in ethanol production from corn constitutes the way which could significantly reduce the water and energy consumption, what essentially reduce whole general production costs without ethanol efficiency decreasing.
机译：酒厂蒸馏物是酒厂在乙醇生产过程中产生的主要且艰巨的副产品。事实证明，这种蒸馏物的液体部分可以在从玉米中生产乙醇的过程​​中进行回收，而不会干扰发酵过程。玉米种子使用常规的非压力方法进行糊化发酵，并具有新颖性：酿酒厂蒸馏液体部分而不是工艺用水的再循环系统。估计了发酵效率和釜馏物的主要化学参数。馏分的液体部分被回收了28次。在这样的条件下，酿酒酵母酵母能有效地生产乙醇，产率为理论值的79.80％，使活力和数量保持在同一水平。然而，釜馏物的液体部分的再循环导致湿饼中蛋白质和钾的增加，这使得该产品对补充饲料更具吸引力。事实证明，向玉米糖化过程中添加釜馏液部分而不是工艺用水，以及玉米中乙醇生产中的28个循环循环构成了可以显着减少水和能源消耗的方式，这在不提高乙醇效率的情况下实质上降低了总体生产成本减少。

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