A method and device for tubular multi-channel cycle alternating light and dark biohydrogen production

Abstract

The invention provides a tubular multi-line circular light and dark alternating biological hydrogen production method and device. By utilizing the characteristics that anaerobic bacteria have relatively strong matrix degrading capability and photosynthetic bacteria have relatively high raw material conversion rates, photosynthetic and anaerobic bacterium mixed floras are circularly cultured in a light fermentation pipeline and a dark fermentation pipeline to form a biological membrane through enrichment, and biological hydrogen production is carried out according to the modes of light and dark alternation and continuous circulation. The method and the device have the beneficial effects that pretreated biomass raw materials are firstly degraded by the anaerobic bacteria in a dark reaction zone to produce hydrogen, and after being treated, the fermentation liquor after producing hydrogen with the anaerobic bacteria enters a light reaction zone to be further utilized by the photosynthetic bacteria to produce hydrogen, thus increasing the raw material conversion rate and the hydrogen yield; relative to the method for producing hydrogen through dark fermentation with the single anaerobic bacteria, the method for producing hydrogen through mixed fermentation has the advantage of higher raw material utilization rate; relative to the method for producing hydrogen with the single photosynthetic bacteria, the method for producing hydrogen through mixed fermentation has the advantages of better raw material utilization range and higher hydrogen production efficiency, thus obviously improving the efficiency of biological hydrogen production.

Description

technical field [0001] The invention belongs to the technical field of renewable energy, and in particular relates to a method and a device for the tubular multi-channel cycle light-dark alternating biological hydrogen production suitable for photosynthetic and anaerobic bacterial mixed flora to utilize biomass raw materials. Background technique [0002] With the rapid development of the world's economy and society, limited fossil energy can no longer meet the energy needs of countries all over the world, and fossil energy will cause increasingly serious environmental pollution problems. Among various alternative energy sources, hydrogen energy is due to its potential Renewability, cleanliness, convenient storage, and various application forms are considered to be the most ideal clean energy. At present, industrial hydrogen production is mainly obtained by hydrogen production by electrolysis of water and hydrogen production by reforming fossil fuels. There are disadvantages...

AI Technical Summary

Problems solved by technology

At present, industrial hydrogen production is mainly obtained by hydrogen production by electrolysis of water and hydrogen production by reforming fossil fuels. There are disadvantages such as high energy consumption for hydrogen production and pollution in the hydrogen production process, which cannot meet the requirements of sustainable development of hydrogen energy production in the future. Biological hydrogen production The reaction conditions are mild, and it is carried out under normal temperature, normal pressure and mild conditions close to neutral. Moreover, industrial and agricultural waste and various industrial sewage can be used as raw materials for biological hydrogen production, which can combine energy production with waste utilization, solar energy conversion, and environmental protection. The combination of pollution control, etc., not only realizes the utilization of waste resources, but also reduces the cost of hydrogen production, which has become a research hotspot in the field of hydrogen energy production today.

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