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A kind of composite matrix of vinegar residue biochar

A bio-waste and material technology, applied to fertilizers made from bio-waste, fertilizer mixtures, agriculture, etc., can solve problems such as changing the nutrient form in the nutrient solution, affecting nutrient absorption, and destroying chemical balance, so as to promote growth, The effect of solving environmental pollution and large surface area

Active Publication Date: 2020-05-19
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, existing studies have shown that the peat in the matrix can only be partially replaced by biochar, which is mainly because biochar is generally alkaline, with a pH of about 9-11
In general, overacid or overalkaline substrates will affect the pH of the nutrient solution, destroy its chemical balance, and change the form of nutrients in the nutrient solution, thereby affecting the absorption of nutrients by crops.

Method used

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  • A kind of composite matrix of vinegar residue biochar
  • A kind of composite matrix of vinegar residue biochar
  • A kind of composite matrix of vinegar residue biochar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Collect wheat straw as biomass waste, keep the collected vinegar grains and biomass waste at room temperature for air-drying or air drying, so that the water content of vinegar grains and biomass waste is reduced to below 20%, and then press the following volume Mix the obtained dry vinegar grains with dry biomass waste, carbonize at 350-500°C for 2-4 hours under anaerobic conditions, cool, grind, and sieve to obtain vinegar grains biochar with a particle size of 1-5mm , the pH of the prepared vinegar residue biochar is shown in Table 1. It can be seen from the table that adding biomass and a certain proportion of vinegar grains for anaerobic pyrolysis can significantly reduce the pH of biochar, and with the increase of the proportion of vinegar grains, the pH of biochar gradually decreases.

[0036] Table 1 pH value of different biochars

[0037]

[0038] Effects of Substrate Components on Plant Growth

Embodiment 2

[0039]Embodiment 2 is contrasted with the matrix CK of adding peat and the matrix B of conventional biomass charcoal, with adding the dried vinegar grains of different proportions to coordinate the preparation series of vinegar grains biomass charcoal compound matrix (BV, BV1, BV2, BV3) as The experimental objects, the specific proportions are shown in Table 2.

[0040] Table 2 Volume ratio of matrix raw materials (%)

[0041]

[0042] After soaking the pepper seeds in 55°C warm water, germinate them in a dark condition in a 30°C constant temperature incubator. After whitening, choose the seeds with the same uniformity for sowing. In , each treatment and control were repeated 3 times and arranged in random blocks. Water was irrigated with water before 9:00 a.m. every day, and no nutrient solution was added during the period. After 50 days, samples were taken to measure the above-ground and underground growth indicators of the seedlings.

[0043] 1. Pore characteristics of...

Embodiment 3

[0057] Experimental method: Collect agricultural wastes such as wheat straw, traditional Chinese medicine dregs, wood chips, and pig manure as biomass waste, and air-dry or air-dry the vinegar waste and the above-mentioned biomass wastes at room temperature, respectively, so that the vinegar waste and biomass When the moisture content of the waste is reduced to less than 20%, the wheat straw, traditional Chinese medicine slag, sawdust, pig manure and other substances are respectively prepared into vinegar waste biomass charcoal by anaerobic thermal cracking at 450°C in a carbonization furnace. At the same time, dry vinegar grains were mixed with dry biomass (20% water content) such as wheat straw, traditional Chinese medicine dregs, sawdust, pig manure at a volume ratio of 1:4, respectively, and the mixed biomass was passed through a carbonization furnace for 450 minutes. ℃ anaerobic thermal cracking to prepare vinegar residue biomass charcoal. Taking the matrix CK added with ...

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Abstract

The invention discloses a vinegar residue biomass charcoal complex substrate, which is prepared from the following substances in percentage by volume: 30 to 60 percent of vinegar residue biomass charcoal, 0 to 30 percent of dry vinegar residue and the balance vermiculite perlite, wherein the vinegar residue biomass charcoal is prepared from dry biomass waste and dry vinegar residue through mixed carbonization. The invention also discloses the vinegar residue biomass charcoal. The prepared vinegar residue biomass charcoal can replace peat to become the composition part of a plant growth substrate; the vinegar residue biomass charcoal complex substrate disclosed by the invention is an ideal plant growth substrate. The vinegar residue biomass charcoal complex substrate has the advantages that the industrial and agricultural waste resources can be effectively utilized; the problem of atmospheric pollution caused by straw burning is effectively solved; the mining pressure of peat resources can be relieved; an important path for solving the environment pollution and changing waste into valuable materials is opened for industrial production.

Description

technical field [0001] The invention belongs to the field of resource recycling and relates to a compound matrix of vinegar residue biomass charcoal. Background technique [0002] Peat is widely used as a plant growth substrate because of its light texture, good water absorption and air permeability, high humic acid content, rich organic matter and fiber content, loose and porous, and strong buffer capacity. However, according to statistics, the current reserves of peat resources in the world are about 4×10 8 hm 2 , accounting for only 3% of the earth's land area. Moreover, with the increasing demand for peat resources, the peat area is rapidly decreasing, and the quality is gradually declining. However, peat is a short-term non-renewable resource, and the regional distribution is quite different, which makes the price of peat higher and the cost of the substrate. increasing day by day. Moreover, because peat resources are an important storage of carbon, it is particular...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00
CPCC05D9/00C05F5/008
Inventor 李恋卿潘根兴胡青青张旭辉郑聚锋刘晓雨程琨
Owner NANJING AGRICULTURAL UNIVERSITY
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