Method for increasing kitchen waste high solid-state fermentation produced biogas

A technology of food waste and solid-state fermentation, applied in fermentation, biosynthesis, waste fuel, etc., to achieve the effects of increasing economic benefits, easy control, and improving efficiency

Active Publication Date: 2015-09-16
JIANGNAN UNIV
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Problems solved by technology

At present, some researchers domesticate and screen acid-tolerant methanogens by gradually reducing the pH of the anaerobic reaction system, but there are few studies on the use of organic acids to domesticate acid-resistant methanogens

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  • Method for increasing kitchen waste high solid-state fermentation produced biogas
  • Method for increasing kitchen waste high solid-state fermentation produced biogas
  • Method for increasing kitchen waste high solid-state fermentation produced biogas

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Experimental program
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Effect test

Embodiment Construction

[0023] The experimental device adopts the automatic methane potential analysis system (AMPTS), the reaction temperature is 55±2°C, and the gas volume is counted by AMPTS v5.0 software. During the acid-resistant acclimation culture process, the methane content in the biogas, the GAD activity in the fermentation broth, the H + -ATP concentration was measured; in the high solid-state anaerobic fermentation process, methane content in biogas, amylase activity and protease activity in fermentation liquid were measured, and the determination methods were all analyzed by national standard methods (Table 1).

[0024] Table 1 Analysis items and methods

[0025]

[0026] The acid-resistant acclimation culture of methanogens is to add 200g of sludge, 20mL of nutrient solution (Table 2), 1.5g of glucose and quantitative sodium butyrate (Table 3) into a 500mL serum bottle, and add deionized water to 500mL, every 2 days Add 1.5 g of glucose. Five groups of experiments were set up, mark...

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Abstract

The invention discloses a method for increasing kitchen waste high solid fermentative produced biogas, and belongs to the technical field of treatment control and environmentally-friendly purification treatment of solid waste. The biogas is produced in a high solid-state anaerobic fermentation way, so that not only can the kitchen waste be effectively treated and the harmless treatment, reduction and recycling of the solid waste be realized, but also the tolerance of methanogens to organic acid can be improved, and the methanogenesis efficiency of high solid-state anaerobic fermentation for the kitchen waste can be improved. A fermentation system is stable to operate, the kitchen waste treatment effect is good, and the energy recovery rate is relatively high.

Description

technical field [0001] The invention relates to a method for improving the production of biogas by high-solid-state fermentation of kitchen waste, and belongs to the technical fields of solid waste treatment control and environmental protection purification treatment. Background technique [0002] With the development of social economy and the improvement of people's living standards, urban domestic waste has increased dramatically. According to statistics, kitchen waste generally accounts for 30%-40% of the total amount of urban domestic waste. In 2010, the output of kitchen waste was as high as 90 million tons. Food waste will not only cause environmental pollution and waste of resources, but also affect social and economic development. Therefore, the treatment and disposal of kitchen waste has become a hot research topic today. [0003] At present, domestic and foreign food waste treatment and disposal technologies mainly include processed feed, sanitary landfill, comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02
CPCY02E50/30Y02P20/59
Inventor 阮文权杨莉丽黄月赵明星
Owner JIANGNAN UNIV
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