Method for preparing hydrogen and methane by adopting cassava dregs preprocessed by methyl morpholine oxide ionic liquid

Abstract

The invention relates to the biomass energy utilization technology, aiming at providing a method for preparing hydrogen and methane by adopting cassava dregs preprocessed by methyl morpholine oxide ionic liquid. The method comprises the following steps: grinding cassava dregs, and drying the grinded cassava dregs, thus obtaining a preprocessed material; mixing the preprocessed material with the methyl morpholine oxide ionic liquid, and carrying out pretreatment at 110 DEG C; adding with distilled water, and carrying out stirring, thus obtaining the sediment which serves as the raw material for enzyme hydrolysis; further, adding with deionized water and cellulase; carrying out heating under the sealed state, thus obtaining enzymatic hydrolysate; mixing the enzymatic hydrolysate with deionized water, adding with yeast extract, inoculating dark-fermentation hydrogenogens, and introducing high-purity nitrogen till the dark-fermentation hydrogen producing process is finished; and carrying out sterilization on tail liquid, inoculating activated methanogens, introducing high-purity nitrogen, and carrying out fermentation, thus obtaining methane. According to the method provided by the invention, the yields of hydrogen and methane are obviously improved by adopting the cassava dregs preprocessed by the methyl morpholine oxide ionic liquid; compared with the method for preparing methane by adopting the cassava dregs preprocessed by methyl morpholine oxide ionic liquid, the method for co-preparing hydrogen and methane by adopting the cassava dregs preprocessed by the methyl morpholine oxide ionic liquid provided by the invention has the advantages that the energy exchange efficiency is improved.

Description

technical field

[0001] The invention relates to biomass energy utilization technology, in particular to a method for producing hydroalkane gas from cassava residue pretreated by oxidation of methylmorpholine ionic liquid. Background technique

[0002] With the increasing demand for energy, the gradual reduction of fossil fuels and the gradual improvement of environmental protection requirements, the search for renewable energy is becoming more and more important. As a clean and efficient renewable energy, hydrogen energy has attracted people's attention. Using lignocellulose as raw material to produce hydrogen through bacterial fermentation has a good application prospect. There are a large number of starch factories in Guangxi, Guangdong, Hainan and other provinces. When cassava is used to process and produce starch, a lot of cassava dregs will be produced. If used improperly, these wastes can have adverse effects on the environment. Cassava residue is a kind of natural ...

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