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Method for increasing amount of hydrogen produced through mixing of kitchen waste and blue-green algae through pretreatment

A technology for kitchen waste and pretreatment, which is applied in the directions of biosynthesis and fermentation to achieve the effect of promoting hydrogen production by anaerobic fermentation, with simple process and improving hydrogen production efficiency.

Active Publication Date: 2019-09-17
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still few reports at home and abroad on the use of high-pressure homogenization to crush Taihu Lake cyanobacteria to improve co-fermentation hydrogen production

Method used

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  • Method for increasing amount of hydrogen produced through mixing of kitchen waste and blue-green algae through pretreatment
  • Method for increasing amount of hydrogen produced through mixing of kitchen waste and blue-green algae through pretreatment
  • Method for increasing amount of hydrogen produced through mixing of kitchen waste and blue-green algae through pretreatment

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Experimental program
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Effect test

Embodiment 1

[0043] The schematic diagram of the experimental device is as follows: figure 1 shown. Specific steps are as follows:

[0044] (1) Heat treatment of anaerobic granular sludge: heat treatment temperature of anaerobic granular sludge is 120°C, and treatment time is 10 minutes;

[0045] (2) Pretreatment of cyanobacteria by high-pressure homogenization: first filter the cyanobacteria with a 100-mesh sieve to remove large particles or sticky substances, and then carry out high-pressure homogenization and crushing at a pressure of 60 MPa, and the number of homogenization is 1 time. See the microscopic morphology, average particle size, SCOD dissolution effect and cracking energy efficiency of cyanobacteria after high-pressure homogenization. Figure 2-5 .

[0046] (3) Mix the cyanobacteria and kitchen waste after high-pressure homogenization in step (2) as the fermentation substrate: the mixing ratio is TS 1:4;

[0047] (4) Mix the heat-treated anaerobic granular sludge in step ...

Embodiment 2

[0049] Example 2: Effects of different homogeneous pressures on the hydrogen production performance of mixed fermentation

[0050] Adopt the method of embodiment 1 to carry out anaerobic fermentation, difference is only: high-pressure homogeneous pressure is respectively: 20, 40, 80 and 100MPa, other conditions are the same as embodiment 1. See the microscopic morphology, average particle size, SCOD dissolution effect and cracking energy efficiency of cyanobacteria after high-pressure homogenization. Figure 2-5 ; After mixed fermentation, the cumulative hydrogen production, organic matter degradation rate and liquid phase end product concentration changes are shown in Figure 6-9 .

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Abstract

The invention discloses a method for increasing amount of hydrogen produced through mixing of kitchen waste and blue-green algae through pretreatment, and belongs to the technical field of treatment and utilization of organic solid waste. According to the method, thermally treated anaerobic granular sludge is mixed with the blue-green algae after high-pressure homogenization pretreatment according to a proper ratio, and the solid content of the reaction system is controlled; by thermally treating the anaerobic methanogenic granule sludge, methanogens can be effectively killed, hydrogenogens capable of generating spores can survive, the kitchen waste and the blue-green algae after high-pressure homogenization pretreatment are added into an anaerobic mixed fermentation hydrogen production system, under the wall breaking effect of high-pressure homogenization, microorganisms can degrade some intracellular degradation-resistant substances and hydrolyze partial extracellular high polymers, and therefore hydrogen generation through anaerobic fermentation can be promoted. The efficiency of generating hydrogen is further improved, the amount of accumulated hydrogen is 36.67 mL.gVS-1, and efficient recovery of the hydrogen energy is achieved.

Description

technical field [0001] The invention relates to a pretreatment method for improving hydrogen production by mixing kitchen waste and blue-green algae, and belongs to the technical field of solid organic waste treatment and utilization. Background technique [0002] In recent years, the eutrophication of the lake body has become more serious, and the large-scale outbreak of blue-green algae has become one of the serious environmental problems. It is the most effective, safe and convenient way to salvage a large number of blue-green algae. However, how to realize the subsequent resource utilization of cyanobacteria has become an important problem to be solved. The use of anaerobic fermentation technology can not only realize the treatment of cyanobacteria, but also recover hydrogen energy. However, the fermentation efficiency of individual cyanobacteria is low, and the presence of unbalanced nutrients and cell walls can adversely affect the degradation of cyanobacteria. From...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P3/00
CPCC12P3/00Y02P20/59
Inventor 赵明星李子阳徐锦汤晴阮文权
Owner JIANGNAN UNIV
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