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Carbon-based sandy soil modifying agent and application thereof

A modifier, sand and soil technology, applied in the field of environmental management, can solve the problems of unfriendly environment, difficult to ensure that the polymer is not decomposed and denatured, etc., and achieves the effects of good water retention, good sand-fixing effect, and prevention of denaturation.

Inactive Publication Date: 2019-04-05
通辽市农业科学研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nature of the lack of elements and minerals required for plant growth in the sand body has not changed, and it is difficult to ensure that the polymer will not decompose and denature in the desert environment and become an environmentally unfriendly substance

Method used

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  • Carbon-based sandy soil modifying agent and application thereof
  • Carbon-based sandy soil modifying agent and application thereof
  • Carbon-based sandy soil modifying agent and application thereof

Examples

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preparation example Construction

[0032] Further, the preparation method of phosphorus modified biochar comprises:

[0033] Mix biochar powder with potassium phosphate solution and hydrogen peroxide solution, heat at 70-90°C for 1-3 hours, then add manganese dioxide until no hydrogen peroxide hydrolysis bubbles are released.

[0034] Further, the mass ratio of potassium phosphate to biochar in the potassium phosphate solution is 1:4-6, or 1:5.

[0035] Further, the percentage concentration of the hydrogen peroxide solution is 5-13% (or 7-11%, or 8-10%); the volume ratio of the potassium phosphate solution to the hydrogen peroxide solution is 1-10%. 3:1, or 1.5 to 2.5:1.

[0036] More preferably, in the carbon-based sand modifier in this embodiment, the biochar is phosphorus-modified animal feces charcoal; the sand-fixing agent is polyvinyl alcohol.

[0037] More preferably, in the carbon-based sand modifier in this embodiment, the biochar is phosphorus-modified animal feces charcoal; the sand-fixing agent is...

Embodiment 1

[0041] The present embodiment provides a kind of charcoal-based sand modifier (marked as A), and its preparation method comprises:

[0042] a. Prepare phosphorus-modified pig manure charcoal:

[0043] After pulverizing pig manure charcoal, wash it with water to remove impurities, place it at 80°C for 6 hours, and pass it through a 200-mesh sieve after drying. Get the pig manure charcoal powder of 50g gained and mix with the potassium phosphate solution of 100mL (wherein, the solute potassium phosphate is 10g) and the hydrogen peroxide solution of 50mL, 8%, obtain mixed material;

[0044] After heating and stirring the mixed material at 80° C. for 2 hours, manganese dioxide was added to catalyze the decomposition of hydrogen peroxide to neutrality, and after washing with water and drying, 53 g of phosphorus-modified pig manure charcoal was obtained.

[0045] b. Preparation of sand-fixing agent solution:

[0046] 1 g of 1799 type polyvinyl alcohol was added to 100 ml of distil...

Embodiment 2

[0050] The present embodiment provides a carbon-based sand modifier (marked as B), and its preparation method is basically the same as in Example 1, except that:

[0051] b. Preparation of sand-fixing agent solution:

[0052] Add 2 g of sodium carboxymethyl cellulose into 100 ml of distilled water and stir to obtain a sodium carboxymethyl cellulose solution.

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Abstract

The invention belongs to the field of environmental treatment and provides a carbon-based sandy soil modifying agent and application thereof. The carbon-based sandy soil modifying agent is prepared from charcoal and solution containing a sand fixing agent by mixing and drying, wherein a mass ratio of the charcoal to the sand fixing agent is 75:0.5-2.5, and the sand fixing agent comprises at leastone of polyvinyl alcohol and sodium carboxymethyl cellulose. The carbon-based sandy soil modifying agent contains the charcoal and the sand fixing agent, and the charcoal intrinsically contains a great quantity of organic carbons and a certain quantity of minerals and is capable of improving sand nutrition and improving water absorptivity of sand; due to characteristics of high porosity and largesurface area of the charcoal, a protective effect on the sand fixing agent can be achieved, and denaturation of the sand fixing agent in a natural environment is prevented. The carbon-based sandy soilmodifying agent is excellent in sand fixing effect, great in water retentivity and applicable to desertification control and has a promising application prospect.

Description

technical field [0001] The invention relates to the field of environmental governance, in particular to a carbon-based sand modifier and its application. Background technique [0002] At present, 20% of the world's 162 million square kilometers of land is desert, and 60,000 square kilometers of land will become desert every year. In China, 334,400 square kilometers of land are slowly turning into desert due to desertification. Desertification causes my country to lose 1,500 hectares of land every year. How to control and utilize the desert has become an urgent matter. Biological methods, physical methods, and chemical methods are currently the three main methods for desert control. [0003] The chemical sand control method has achieved partial results through research in recent years. Among the chemical sand fixation methods, high molecular polymer sand fixation has now become a research frontier. The aqueous solution of high molecular polymer has good viscosity and per...

Claims

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Application Information

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IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 王振国郑庆福李岩张智勇李默徐庆全崔凤娟邓志兰呼瑞梅王健
Owner 通辽市农业科学研究院
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