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Method for pretreating maize straws by utilizing NH4HCO3, and anaerobic fermentation method of maize straws

A corn stover and anaerobic fermentation technology, applied in fermentation, waste fuel and other directions, can solve the problems of poor treatment effect, waste treatment, high cost, and achieve the effects of difficult operation, high treatment cost and alleviating waste of resources.

Inactive Publication Date: 2016-11-16
HENAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are some problems such as high cost, poor treatment effect, follow-up waste management, etc.

Method used

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  • Method for pretreating maize straws by utilizing NH4HCO3, and anaerobic fermentation method of maize straws
  • Method for pretreating maize straws by utilizing NH4HCO3, and anaerobic fermentation method of maize straws
  • Method for pretreating maize straws by utilizing NH4HCO3, and anaerobic fermentation method of maize straws

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A use of NH 4 HCO 3 Methods of Pretreating Corn Stalks:

[0030] After crushing the corn stalks, pass through a 40-mesh sieve, weigh 88g and add 300mL of NH with a mass concentration of 4%. 4 HCO 3 Solution, just submerged the crushed corn stalks, mixed evenly and placed in a plastic bucket, treated with micro-oxygen at room temperature for 10 days (the plastic bucket is not completely sealed, air can enter), then add water and stir the treated corn stalks evenly After standing still, filter and dry for later use.

[0031] The method of anaerobic fermentation using the above-mentioned pretreated corn stalks is as follows:

[0032] Take the above-mentioned dry corn stalks for use in a fermentation bottle, add 200mL of inoculum, [the source of the inoculum: ordinary fresh cow dung (mainly using the methanogenic bacteria in cow dung) is added with water to prepare the TS concentration ( That is, the total solid concentration, the same below) is 8% of the fermentation ...

Embodiment 2

[0035] Joined NH 4 HCO 3The mass concentration of solution is 6%, all the other are with embodiment 1.

Embodiment 3

[0037] Joined NH 4 HCO 3 The mass concentration of solution is 8%, all the other are with embodiment 1.

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Abstract

The invention aims at providing a method for pretreating maize straws by utilizing NH4HCO3, and an anaerobic fermentation method of maize straws. The method for pretreating maize straws by utilizing NH4HCO3 comprises the following steps: crushing maize straws and sieving with a 40-mesh sieve, adding 4%-10% ( by mass concentration) NH4HCO3 solution, evenly mixing, then performing microaerobic treatment for days at room temperature, then taking out the treated maize straws and adding water and evenly stirring, standing, filtering and drying for later use; and then performing anaerobic fermentation gas production to the obtained maize straws. The gas production of the maize straws pretreated by utilizing the method is increased by 30.6% compared with no treatment, and the removal rate of COD during the anaerobic fermentation of the pretreated maize straws is also obviously promoted.

Description

technical field [0001] The invention belongs to the technical field of corn stalk treatment, in particular to the use of NH 4 HCO 3 A method for pretreating corn stalks and an anaerobic fermentation method for corn stalks. Background technique [0002] my country is a big agricultural country, and it is also a country with a large output of straw. There are 220 million tons of corn straw alone. Corn stalks can produce clean energy—biogas under the action of anaerobic microorganisms. As a high-grade clean energy, biogas has the characteristics of wide distribution of raw materials, low construction cost, high conversion efficiency, good comprehensive benefits, and is suitable for rural development. It plays an active role in rural energy conservation and emission reduction and agricultural ecological environment protection. The development of straw fermentation projects can effectively alleviate the waste of straw resources and improve the rural energy structure. It is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02
CPCC12P5/023Y02E50/30
Inventor 焦有宙贺超李刚王少鹏关山月李荆波田超超李威峰
Owner HENAN AGRICULTURAL UNIVERSITY
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