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Organic environmental-friendly sand solidification agent and preparation method thereof

A technology of sand-fixing agent and environmental protection, applied in the field of organic environmental-friendly sand-fixing agent and its preparation, can solve the problems of complex methods, waste, pollution, etc., and achieve the effects of promoting plant growth, low cost, and improving soil

Active Publication Date: 2015-08-26
YANBIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 201310554598.4 discloses a method of using furfural waste liquid to prepare sand-fixing agent, but the method is complicated
Lignosulfonate is a by-product of the paper industry. The annual output in my country is about 150,000 tons. In addition, there are many pulping waste liquids in papermaking enterprises that are directly discharged without recycling, causing great pollution and waste.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First, prepare the solution: 1) Dissolve potassium hydroxide in 20-50mL to make a 10% solution;

[0025] 2) Dissolve 0.1-0.3g polyacrylamide in 100mL water at 60-70°C, and stir well;

[0026] 3) Dissolve 0.5-1g of sodium carboxymethylcellulose in 20-30mL of water and stir well;

[0027] Next, the initial reaction: 4) Add 50g of calcium lignosulfonate into a four-necked bottle, add 50-60mL of water, and stir evenly;

[0028] 5) Heat, control the temperature at 60-90°C, and slowly add 5-7mL formaldehyde dropwise to the four-necked bottle under constant stirring, then add 3-4.5mL of 10% potassium hydroxide solution, and control the pH value at 7.5-9.5 Between, reaction 2h;

[0029] Again, the second step reaction: 6) Slowly add 0.1-0.3% polyacrylamide 2-4mL, formaldehyde 5mL, and then add 1:6 (volume ratio) sulfuric acid 3-7mL to the four-necked bottle, the pH value is at 5.0 Between -6.5, react for 1h, and slowly drop polyacrylamide at a rate of 3-5d / min;

[0030] 7) ...

Embodiment 2

[0034] First, prepare the solution: 1) Dissolve potassium hydroxide in 20-50mL to make a 10% solution;

[0035] 2) Dissolve 0.1-0.3g polyacrylamide in 100mL water at 60-70°C, and stir well;

[0036] 3) Dissolve 0.5-1g of hydroxypropyl methylcellulose sodium in 20-30mL of water, and stir well;

[0037] Next, the initial reaction: 4) Add 50g of calcium lignosulfonate into a four-necked bottle, add 50-60mL of water, and stir evenly;

[0038] 5) Heat, control the temperature at 60-90°C, and slowly add 5-7mL formaldehyde dropwise to the four-necked bottle under constant stirring, then add 3-4.5mL of 10% potassium hydroxide solution, and control the pH value at 7.5-9.5 Between, reaction 2h;

[0039] Again, the second step reaction: 6) Slowly add 0.1-0.3% polyacrylamide 2-4mL, formaldehyde 5mL, and then add 1:6 (volume ratio) sulfuric acid 3-7mL to the four-necked bottle, the pH value is at 5.0 Between -6.5, react for 1h, and slowly drop polyacrylamide at a rate of 3-5d / min;

[0...

Embodiment 3

[0044] First, prepare the solution: 1) Dissolve potassium hydroxide in 20-50mL to make a 10% solution;

[0045] 2) Dissolve 0.1-0.3g polyacrylamide in 100mL water at 60-70°C, and stir well;

[0046] 3) Dissolve 0.5-1g sodium carboxymethyl starch in 20-30mL water and stir well;

[0047] Next, the initial reaction: 4) Add 50g of calcium lignosulfonate into a four-necked bottle, add 50-60mL of water, and stir evenly;

[0048] 5) Heat, control the temperature at 60-90°C, and slowly add 5-7mL formaldehyde dropwise to the four-necked bottle under constant stirring, then add 3-4.5mL of 10% potassium hydroxide solution, and control the pH value at 7.5-9.5 Between, reaction 2h;

[0049] Again, the second step reaction: 6) Slowly add 0.1-0.3% polyacrylamide 2-4mL, formaldehyde 5mL, and then add 1:6 (volume ratio) sulfuric acid 3-7mL to the four-necked bottle, the pH value is at 5.0 Between -6.5, react for 1h, and slowly drop polyacrylamide at a rate of 3-5d / min;

[0050]7) Slowly ad...

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Abstract

The invention discloses an organic environmental-friendly sand solidification agent. The organic environmental-friendly sand solidification agent is prepared by the steps of firstly reacting lignin in papermaking wastewater with aldehyde substances to generate more active groups, and further reacting the active groups with a cross-linking agent, the aldehyde substances and a solidifying agent, so as to obtain organic environmental-friendly sand solidification products, wherein the weight ratio of lignin to water to the aldehyde substances to the cross-linking agent to the solidifying agent is 1 to 1 to (0.2-0.24) to (0.04-0.08) to (0.1-0.2). The organic environmental-friendly sand solidification agent is easily dissolved in water, strong in adhesive property, high in strength, capable of resisting wind erosion, good in moisture evaporation effect, pollution free and environmentally friendly; after the organic environmental-friendly sand solidification agent is sprayed to sand ground, a sand crust is produced, so that the ground moisture can be absorbed, the evaporation of moisture under the ground is reduced, requirements in actual sand solidification application can be met, the contents of nitrogen, phosphorus, potassium, microelements and organic substances in sand soil can be further increased, the soil is improved, and the plant growth is promoted; the organic environmental-friendly sand solidification agent can be degraded within a short time; the spraying amount is 25g / m<2>-30g / m<2>, so that the cost is low, the construction is simple, and the popularization is liable. The invention further discloses a preparation method of the organic environmental-friendly sand solidification agent.

Description

technical field [0001] The invention relates to an anti-desertification sand-fixing material, in particular to an organic environment-friendly sand-fixing agent and a preparation method thereof. Background technique [0002] Land desertification is one of the biggest environmental problems facing the world today. Since 1949, my country has developed more than 100 engineering sand-fixation and biological sand-fixation models, but all of them have high cost, slow effect, low benefit and construction Slowness and other disadvantages. Chemical control technology is a main way of desertification control, and its advantages are low cost, quick effect and simple construction. Foreign countries began to study chemical sand-fixation in the 1930s, and achieved great development in the 1950s. Up to now, more than 150 chemical sand-fixing agents have been developed, and some of them have been put into practice for sand prevention, sand fixation, and sand improvement. land. In the 1960...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/32C09K17/22C09K17/24C05G3/04C09K105/00C05G3/80
CPCC05G3/80C09K17/32C09K2105/00
Inventor 姚艳红何苗李承范朴京一
Owner YANBIAN UNIV