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Application of papermaking white clay in biological fermentative hydrogen production

A technology for papermaking white mud and biological fermentation, which is applied to fermentation and other directions, can solve the problems of high cost, high energy consumption, complex process and the like, and achieves the effects of high hydrogen production rate, improved hydrogen production rate and simple process

Inactive Publication Date: 2012-03-21
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese invention patent application "a method for two-phase anaerobic fermentation of food waste to produce hydrogen and methane", the application number is 200710029440. , heat treatment for 0.25-1.0h, and two-phase anaerobic fermentation to produce hydrogen and methane, but this patent application has the problems of complex process, high energy consumption and high cost

Method used

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  • Application of papermaking white clay in biological fermentative hydrogen production
  • Application of papermaking white clay in biological fermentative hydrogen production

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Fill the bucket with dewatered sludge from the sewage plant (about 80% water content) to remove impurities such as silt, grass, etc., cover it and leave it for 10 to 20 days to create an anaerobic environment, remove the aerobic bacteria in it, and then Take 100g of dewatered sludge from the lower part of the barrel, put it into a fermentation bottle, seal it, and heat it at 80°C for 0.5h, then add 1.2g of glucose and 1g of peptone, shake well, and seal it. The fermentation bottle is acclimatized at 50-53°C, and the sludge is acclimated until no gas is produced, the time is 20-30h, and the acclimated sludge is recorded as inoculation sludge. Add the obtained inoculated sludge, 100g of kitchen waste, and 3g of papermaking white mud into the fermentation bottle, add water to ensure that the solid content is 5-10% (preferably 6-8%), shake well, seal, and control the fermentation reaction temperature at 50-53 ℃, the hydrogen yield is 83.18mLH 2 / gVS, after 12-18 hours of f...

Embodiment 2

[0023] Take 100g of the sludge left in anaerobic state for 10-20 days in Example 1, put it into a fermentation bottle, seal it, and heat-treat it at 85°C for 20min, then add 2g of glucose and 0.9g of peptone, shake well, and seal it. The fermentation bottle is acclimatized at 50-53°C, and the sludge is acclimated until no gas is produced, and the time is 20-30 hours. The acclimatized sludge is recorded as inoculation sludge. Add the obtained inoculated sludge, 100g of kitchen waste, and 5g of papermaking white mud into the fermentation bottle, add water to ensure that the solid content is 5-10% (preferably 6-8%), shake well, seal, and control the reaction temperature of dark fermentation at 50-50% 53°C, the hydrogen yield is 97.76mLH 2 / gVS, after 14-20 hours of fermentation time, the process basically ends.

Embodiment 3

[0025] Take 100g of the sludge left in the anaerobic state of Example 1 for 10-20 days, put it into a fermentation bottle, seal it, and heat-treat it at 83°C for 25 minutes, then add 0.9g of glucose and 1.2g of peptone, shake well, and seal it. The fermentation bottle was acclimated at 53°C, and the sludge was acclimated until no gas was produced, and the time was 20-30 hours. The acclimated sludge was recorded as inoculation sludge. Add the obtained inoculated sludge, 100g of kitchen waste, and 7g of papermaking white mud into the fermentation bottle, add water to ensure that the solid content is 5-10% (preferably 6-8%), shake well, seal, and control the reaction temperature of dark fermentation at 50-50% 53°C, the hydrogen yield is 108.64mLH 2 / gVS, after 14-20 hours of fermentation time, the process basically ends.

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Abstract

The present invention discloses an application of papermaking white clay in biological fermentative hydrogen production, which is characterized in that: the papermaking white clay is used as pH buffering agent and an inorganic nutrient of hydrogenogens; and the papermaking white clay is mixed with kitchen garbage and dewatered sludge of a sewage plant for performing biological fermentative hydrogen production. The application of papermaking white clay in biological fermentative hydrogen production has the advantages of simple operation and low cost. The papermaking white clay is adopted for performing reinforcement treatment for a kitchen garbage fermentation hydrogen production system. Not only is pollution of the papermaking white clay reduced, but also stability and gas production rateof the fermentation process are greatly improved. The activity of the hydrogenogen is improved. The hydrogen production rate can reach up to 112.39mL / gVS.

Description

technical field [0001] The invention relates to a method for producing hydrogen, in particular to a method for producing hydrogen through sludge heat treatment-papermaking white mud strengthening the fermentation of kitchen waste. Background technique [0002] Food waste includes food processing leftovers (kitchen waste) and edible residues (swill) produced by families, schools, canteens and catering industries. Its composition is complex, which is a mixture of oil, water, fruit peel, vegetables, rice noodles, fish, meat, bones, waste tableware, plastic, paper towels and other substances. The sugar content in kitchen waste is high, while the slops are mainly protein, starch and animal fat, and the content of salt and oil is high. In 2007, the annual output of food waste in the whole country was about 90 million tons. Taking Beijing, Shanghai, Guangzhou and Hangzhou as examples, the daily output of food waste exceeded 1,000 tons. Food waste has high moisture content, comple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P3/00
Inventor 张记市王哲
Owner QILU UNIV OF TECH
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