Method for segment pretreatment on straws through ammonia water and hydrogen peroxide
A hydrogen peroxide and pretreatment technology, applied in the application field, can solve the problems of less than 50% effective utilization rate, difficulty in industrial application, and large consumption of acid and alkali, and achieve the effect of easy industrial utilization, low price, and high equipment utilization rate
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Embodiment 1
[0023] A method for segmentally pretreating straw by using ammonia water and hydrogen peroxide, comprising:
[0024] Take finely crushed corn stalks (≥200 mesh), add water and ammonia water, mix well, and let stand at 25°C for 24 hours; then add hydrogen peroxide, mix well, put the mixture after adding hydrogen peroxide into water at 20°C exothermic gas), let stand in water for 24h.
[0025] The amount of added water, ammonia, and hydrogen peroxide is calculated according to that the straw content in the final system is 70% (w / w), the ammonia content is 2.5% (w / w), and the hydrogen peroxide content is 2% (w / w).
[0026] The initial concentration of ammonia water added is 25%, and the initial concentration of hydrogen peroxide added is 30%.
[0027] The specific system is as follows:
[0028]
Embodiment 2
[0030] A method for segmentally pretreating straw by using ammonia water and hydrogen peroxide, comprising:
[0031] The method of this embodiment is basically the same as that of Example 1, except that the ammonia content in the final system is 0.5% (w / w), and the hydrogen peroxide content is 1% (w / w). The specific system is as follows:
[0032]
Embodiment 3
[0034] A method for segmentally pretreating straw by using ammonia water and hydrogen peroxide, comprising:
[0035] The method of this embodiment is basically the same as that of Example 1, except that the ammonia content in the final system is 2.5% (w / w), and the hydrogen peroxide content is 3% (w / w).
[0036] The specific system is as follows:
[0037]
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