Biomass charcoal, compost containing biomass charcoal, and preparation method of biomass charcoal

A biochar and composting technology, applied in the field of organic fertilizers, can solve the problems of increasing compost ash content, lack of nitrogen protection measures, limited nitrogen protection capacity, etc., to promote fermentation and maturity, good economic and social benefits, and improve application effect Effect

Inactive Publication Date: 2014-03-19
NORTHWEST A & F UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the loss of nitrogen in the composting process is 40-70%. The loss of nitrogen not only causes the decline of compost fertilizer efficiency, but also pollutes the environment
How to reduce the loss of nitrogen in the composting process has always been a concern of people. There are many methods for rapid composting of livestock and poultry manure, but these methods overemphasize the speed of decomposition and lack necessary

Method used

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  • Biomass charcoal, compost containing biomass charcoal, and preparation method of biomass charcoal
  • Biomass charcoal, compost containing biomass charcoal, and preparation method of biomass charcoal
  • Biomass charcoal, compost containing biomass charcoal, and preparation method of biomass charcoal

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1: Preparation of apple branch biomass charcoal

[0030] The apple branches are broken to a length of 3-5cm, and under a nitrogen atmosphere, the apple branches are heated in a cracking furnace, the temperature of the heating treatment is 550 ° C, and the heating treatment time is 2.5 hours; then cooled and pulverized for 80-100 Mesh sieve to obtain apple branch biomass charcoal.

Example Embodiment

[0031] Example 2: Preparation of compost using biomass charcoal

[0032] Using cow dung, fungus chaff, chicken dung, etc. as raw materials, mix them according to 33.3%: 33.3%: 33.3% (mass ratio), and then add biomass charcoal in a ratio of 5% (accounting for the mass ratio of the above mixed materials). Adjust the moisture content to 60% of the whole material, stir well, conduct aeration fermentation composting test in the fermentation tank (100L), and the ventilation volume is 0.6-0.8m 3 ·(kg·d) -1 (as organic matter). The temperature change and nitrogen conversion during the fermentation process were monitored, and the treatment without biomass carbon was used as a control. The entire experiment was repeated 3 times.

Example Embodiment

[0033] Example 3: Determination of physical and chemical indexes of compost

[0034] At the beginning of the fermentation of the material, sampling was carried out every 3 days. At each sampling point, the upper, middle and lower 3 layers of the compost were collected and mixed (as one sample). Part of the samples were collected in plastic bags and sealed, and refrigerated at 4°C for testing. The samples were naturally air-dried and then pulverized and passed through a 1 mm sieve for use. Determination of total nitrogen and nitrogen composition and other indicators of the sample.

[0035] The following are the test results:

[0036] from figure 1 It can be seen that the addition of biomass char increases the fermentation temperature: it can be seen from the figure that the temperature change during the composting process has gone through three stages, namely the heating stage, the high temperature stage, and the cooling stage. The treatment of adding biomass charcoal entere...

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Abstract

The invention discloses a biomass charcoal and an application of the biomass charcoal in compost. The biomass charcoal is prepared through the following steps: grinding plant twigs, in the protection of nitrogen gas, carrying out a high-temperature heating treatment on the plant twigs in a cracking furnace, then cooling, grinding, and sieving with a sieve with a size of 80 to 100 meshes so as to obtain the biomass charcoal. The preparation method takes plant twigs as the raw materials, then prepares biomass charcoal under a high temperature; then the biomass charcoal is applied to a compost composed of poultry manure, the biomass charcoal can reduce the nitrogen element loss in the compost, also promotes the fermentation process and compost maturity of the compost, and thus improves the application effect of the organic fertilizer. A novel nitrogen preserving method during the poultry manure compost fertilization process is provided.

Description

technical field [0001] The invention belongs to the field of organic fertilizers, in particular to compost containing biochar and a preparation method thereof. Background technique [0002] Livestock and poultry manure is agricultural waste with relatively high nitrogen content. During the composting process, organic nitrogen will be mineralized to form some intermediate products such as amino acids and amides, and finally converted to inorganic nitrogen (NH 4 + -N, N0 3 -N). The conversion of nitrogen is not only related to the maturity and odor release of compost products, but also related to the loss of nitrogen and the fertilizer efficiency of compost products. [0003] At present, the loss of nitrogen in the composting process is 40-70%. The loss of nitrogen not only causes the decline of compost fertilizer efficiency, but also pollutes the environment. How to reduce the loss of nitrogen in the composting process has always been a concern of people. There are many m...

Claims

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Application Information

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IPC IPC(8): C01B31/02C05G3/00C05F17/00C01B32/05
CPCY02W30/40
Inventor 王旭东李忠徽赵世翔张雪辰王蒙
Owner NORTHWEST A & F UNIV
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