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Method for improving efficiency of preparing hydrogen from vinegar residue by anaerobic fermentation

A technology of anaerobic fermentation and vinegar grains is applied in the field of bioengineering to achieve the effect of improving hydrogen production by anaerobic fermentation

Inactive Publication Date: 2011-02-23
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can dispose of some vinegar grains to a certain extent, there is a big problem of energy consumption when the vinegar grains are dried
In terms of edible fungus cultivation materials and plant soilless cultivation substrates, are a large number of residues landfilled or utilized? If it is landfilled, it will pollute the environment and waste resources
If it is reused, how to use it? These all show that the treatment of these vinegar residues is not the most ideal treatment method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment two:

[0019] (1) Pretreatment of vinegar grains: Weigh 8g of pulverized vinegar grains samples into several clean 250ml tall beakers, add 100mL of 0.2% hydrochloric acid solution at the initial temperature of 30°C and stir, then ultrasonically Ultrasound was performed for 5 min at a power of 700W. After the ultrasonication is over, immediately cool with cold water, stir and mix well, and adjust the pH to 6.5 with 1mol / L HCl or NaOH solution.

[0020] (2) Activated sludge pretreatment and anaerobic fermentation hydrogen production: Weigh 4g of sludge, adjust the pH to 11.0, wait for 1.5h to stand, and then adjust the pH to 6.5. Then dilute to 200ml with tap water, put a silicone pad on it, and tighten the screw cap. Fill the fermentation bottle with high-purity nitrogen through the catheter on the bottle cap, purge the remaining oxygen in the fermentation bottle, clamp the catheter, and then place it in a water bath for constant temperature cultivation at 3...

Embodiment 2

[0022] Embodiment three:

[0023] (1) Pretreatment of vinegar grains: Weigh 8g of crushed vinegar grains samples into several clean 250ml tall beakers, add 100mL of 0.8% hydrochloric acid solution at the initial temperature of 30°C and stir, then Sonicate for 15 minutes under the condition of 400W. After the ultrasonication is over, immediately cool with cold water, stir and mix well, and adjust the pH to 6.5 with 1mol / L HCl or NaOH solution.

[0024] (2) Hydrogen production by anaerobic fermentation: Weigh 8g of sludge, adjust the pH to 11.0, wait for 1.5 hours to stand still, and then adjust the pH to 6.5. Then dilute to 200ml with tap water, put a silicone pad on it, and tighten the screw cap. Fill the fermentation bottle with high-purity nitrogen through the catheter on the bottle cap, purge the remaining oxygen in the fermentation bottle, clamp the catheter, and then place it in a water bath for constant temperature cultivation at 37°C for 72 hours. The untreated vineg...

Embodiment 3

[0026] Embodiment four:

[0027](1) Pretreatment of vinegar grains: Weigh 8g of crushed vinegar grains samples into several clean 250ml tall beakers, add 140mL of 0.6% hydrochloric acid solution at the initial temperature of 30°C and stir, then Ultrasonic treatment at 700W for 10min respectively. After the ultrasonication is over, immediately cool with cold water, stir and mix well, and adjust the pH to 6.5 with 1mol / L HCl or NaOH solution.

[0028] (2) Hydrogen production by anaerobic fermentation: Weigh 6g of sludge, adjust the pH to 11.0, wait for 1.5 hours to stand still, and then adjust the pH to 6.5. Then dilute to 200ml with tap water, put a silicone pad on it, and tighten the screw cap. Fill the fermentation bottle with high-purity nitrogen through the catheter on the bottle cap, purge the remaining oxygen in the fermentation bottle, clamp the catheter, and then place it in a water bath for constant temperature cultivation at 37°C for 72 hours. The untreated vinegar...

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PUM

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Abstract

The invention provides a method for improving the efficiency of preparing hydrogen from vinegar residue by anaerobic fermentation, belongs to the technical field of biological engineering, and in particular relates to an ultrasonic pretreatment method for improving the efficiency of preparing the hydrogen from the vinegar residue by the anaerobic fermentation. The method comprises the following steps of: (1) weighing a crushed vinegar residue sample, adding 0.2 to 2.0 percent solution of hydrochloric acid according to a solid-liquid ratio of 8:60-140 and stirring; ultrasonically treating at the initial temperature of below 30 DEG C and at the ultrasonic power of between 400 and 900W for 3 to 15 minutes; and adjusting the pH to be 6.5 after the ultrasonic treatment is finished; and (2) preparing hydrogen by the anaerobic fermentation: weighing the pretreated active sludge and adding into an anaerobic fermentation tank, adjusting the pH to be 6.5, blowing the air in a fermentation bottle with nitrogen gas and culturing at the temperature of 37 DEG C at constant temperature for 72 hours. The method for improving the efficiency of preparing the hydrogen from the vinegar residue by the anaerobic fermentation is simple to operate and easy to popularize, and can improve the pretreatment effect of cellulose type raw materials such as the vinegar residue and the like and the efficiency of preparing the hydrogen by fermentation.

Description

technical field [0001] The invention relates to a method for improving hydrogen production by anaerobic fermentation of vinegar residues, belonging to the technical field of bioengineering. Background technique [0002] Vinegar grains are leftovers from the production of vinegar from grain raw materials. my country's vinegar grains are rich in resources, such as the annual production and discharge of vinegar grains in Zhenjiang, Jiangsu, up to about 30 million tons. Vinegar grains are highly acidic and decay slowly, which is a major difficulty in urban environmental sanitation management. In order to reduce environmental pollution and realize comprehensive utilization of resources, it is necessary to study the utilization of vinegar grains. [0003] From the current point of view, the application of vinegar grains in feed resources, edible fungus cultivation materials and plant soilless cultivation substrates is the most common. Although these methods can dispose of some...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P3/00
Inventor 王振斌马海乐陈晓寅任晓锋陆道礼马晓珂
Owner JIANGSU UNIV