Sequencing-batch simultaneous saccharified photosynthetic biological hydrogen production reactor and hydrogen production operation method thereof

Abstract

The invention provides a sequencing-batch simultaneous saccharified photosynthetic biological hydrogen production reactor. The reactor comprises a photosynthetic hydrogen production unit and an enzymolysis reaction unit arranged inside the photosynthetic hydrogen production unit, wherein the photosynthetic hydrogen production unit comprises a transparent container; a first seal cap is arranged at the top of the transparent container, and is provided with a charging hole; a discharging hole is formed in the bottom of the transparent container; the enzymolysis reaction unit comprises a lower cylinder, an upper cylinder and a permeable membrane cylinder; a second seal cap is arranged at the upper end of the upper cylinder; and a hydrogen outlet is formed in the second seal cap. The invention further discloses a hydrogen production operation method of the reactor. According to the method, the enzymolysis reaction unit and the hydrogen production reactor are combined together, carbohydrate generated in cellulase hydrolysis is permeated to the hydrogen production part through the permeable membrane cylinder, photosynthetic bacteria are utilized to produce hydrogen by utilizing the permeated carbohydrate, so that enzymolysis and hydrogen production are performed at the same time, and substrate cannot be accumulated, so that the inhibiting effect of carbohydrate on cellulase can be eliminated, the number of reactors can be reduced, and the reaction cost can be reduced.

Description

technical field [0001] The invention belongs to the technical field of rural energy in agricultural engineering, and in particular relates to a sequencing batch synchronous saccharification photosynthetic biological hydrogen production reactor and a hydrogen production operation method thereof. Background technique [0002] The depletion of fossil energy and the environmental pollution caused by its use force people to develop new clean and renewable energy to meet the needs of future economic and social development. Hydrogen energy is recognized as the main form of energy carrier in the future because of its high energy density, non-polluting combustion, and various forms of utilization. The development model of "hydrogen economy" and "hydrogen society" centered on the use of hydrogen energy is people's vision for future energy use technologies. [0003] Biological hydrogen production is a process in which microorganisms use their own metabolism to release hydrogen. The co...

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Problems solved by technology

[0004] At present, in the process of photosynthetic biological hydrogen production using cellulosic biomass as raw material, it is first necessary to crush the cellulosic biomass, and then carry out enzymatic pretreatment to convert the cellulose into carbohydrates such as small molecular sugars and small molecular acids. , the organic matter produced by enzymatic hydrolysis is used by photosynthetic bacteria to produce hydrogen, but the accumulation of sugar substances in the process of enzymatic hydrolysis will inhibit the progress of enzymatic hydrolysis, resulting in low energy conversion efficiency, and synchronous saccharification and fermentation can relieve this phenomenon, Because synchronous saccharification and fermentation is to couple the enzymatic hydrolysis process and fermentation hydrogen production process in the same reactor, the sugar produced by enzymatic hydrolysis will be used by photosynthetic bacteria in time to produce hydrogen, which ensures the positive reaction of enzymatic hydrolysis and improves the cellulose yield. energy conversion efficiency

However, because the crushed cellulose biomass is easy to float in water, if the cellulose biomass and photosynthetic bacteria are placed in the same reactor, the cellulose biomass will block the light, which is not conducive to the bacteria receiving light energy, which will affect the photosynthetic bacteria. Photosynthesis leads to inefficient hydrogen production

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