A method for efficient hydrogen recovery from cellulose by synergistic utilization of thermophilic flora based on microbial electrolysis cells

A microbial electrolytic cell and cellulose technology, applied in the field of microbial electrolytic cell hydrogen production, can solve the problems of low rate and efficiency, increased complexity and cost, and achieve the effects of shortening the cycle, promoting rapid hydrolysis and fermentation, and high metabolic activity
CN109628496BActive Publication Date: 2022-05-03GUANGXI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGXI UNIV
Publication Date
2022-05-03

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Abstract

The invention discloses a method for efficiently recovering hydrogen from cellulose by synergistically utilizing thermophilic flora based on microbial electrolysis cells, which comprises the following steps: (1) at 55°C, using compost as inoculum and cellulose as Electron donor, culturing thermophilic cellulose-degrading bacteria in serum bottles; (2) Construct and start a single-chamber MEC system, using compost as inoculum and sodium acetate as electron donor, in a constant temperature incubator at 55°C Acclimate the thermophilic electrogenic bacteria on the anode of the MEC; (3) Add the enriched thermophilic cellulose-degrading bacteria to the single-chamber MEC, use cellulose as the electron donor, and run on the basis of cellulose The MEC where the degrading flora and the electrogenic flora act synergistically, and hydrogen gas is collected. The present invention utilizes thermophilic cellulose-degrading bacteria to realize hydrogen production by hydrolysis and fermentation of cellulose and utilizes thermophilic electrogenic bacteria group to utilize in situ the end product of cellulose fermentation (acetic acid) and produce hydrogen, so as to achieve high-efficiency conversion of cellulose chemical energy into hydrogen energy.
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Description

technical field

[0001] The invention relates to a method for producing hydrogen by a microbial electrolytic cell, in particular to a method for recovering hydrogen from cellulose by utilizing the synergistic effect of thermophilic cellulose-degrading bacteria and thermophilic electrogenic bacteria. Background technique

[0002] With the increasing energy crisis, the development of renewable energy has been highly valued by countries all over the world. At present, hydrogen energy is considered as an ideal renewable energy because of its high combustion calorific value, pollution-free combustion process, wide application range, abundant raw materials, and storage and transportation. At present, hydrogen production technologies mainly include electrocatalytic water splitting hydrogen production, dark fermentation hydrogen production, microbial electrolysis cell (MEC) hydrogen production and photocatalytic water splitting hydrogen production technology. Among them, the prospec...

Claims

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