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Method for modifying kenaf straw with acetone-potassium permanganate

A technology of potassium permanganate and straw, applied in the field of environmental governance, can solve the problems of cumbersome steps and high energy consumption, and achieve good adsorption effect, low energy consumption and good effect

Pending Publication Date: 2020-06-30
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of cumbersome steps and high energy consumption in the existing straw modification technology, the present invention provides a method for modifying oil-absorbing materials with low production cost and high adsorption capacity

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0028] The method for acetone-potassium permanganate modified kenaf straw of the present invention, concrete steps are as follows:

[0029] Step S1: crushing the kenaf straw, sieving and grading, and selecting the straw with a particle size of 60 mesh;

[0030] Step S2: Wash the above-mentioned straws with tap water once, transfer to an oven for drying at 60°C for 24 hours;

[0031] Step S3: Soak and modify the material obtained in step S2 in a sodium hydroxide solution; the concentration of the sodium hydroxide solution is 1.32 mol / L, the volume of the sodium hydroxide solution is 30 times the volume of the straw, and the soaking time is 24 hours After that, spare. The used sodium hydroxide solution can be reused after appropriate addition of sodium hydroxide to adjust the concentration;

[0032] Step S4: Wash the modified kenaf stalks with water until neutral, and dry them at 60° C. for 5-8 hours. The washing water can be neutralized with hydrochloric acid for harmless tr...

Embodiment 2

[0040] The method for acetone-potassium permanganate modified kenaf straw of the present invention, concrete steps are as follows:

[0041] Step S1: pulverize the kenaf stalks, sieve and classify, and select stalks with a particle size of 80 meshes;

[0042] Step S2: Wash the above-mentioned materials once with tap water, and transfer to an oven for drying at 80°C for 24 hours;

[0043] Step S3: Place the material obtained in step S2 in a sodium hydroxide solution to soak and modify; the concentration of the sodium hydroxide solution is 1.32mol / L, the volume of the sodium hydroxide solution is 20 times that of the straw, and the soaking time is 24h;

[0044] Step S4: washing the modified straw with water to neutrality, and drying at 60°C for 8 hours;

[0045] Step S5: Put the material obtained in step S4 in the acetone-potassium permanganate mixed solution, heat up, soak and stir for modification; the mass concentration of acetone solution in the mixed solution is 2%, the mas...

Embodiment 3

[0052] The method for acetone-potassium permanganate modified kenaf straw of the present invention, concrete steps are as follows:

[0053] Step S1: crushing the biomass straw, sieving and grading, and selecting the straw with a particle size of 100 mesh;

[0054] Step S2: Wash the above materials once with tap water, transfer to an oven at 80°C and dry for 24 hours;

[0055] Step S3: Soak and modify the material obtained in step S2 in a sodium hydroxide solution; the concentration of the sodium hydroxide solution is 1.32 mol / L, the volume of the sodium hydroxide solution is 30 times that of the straw, and the soaking time is 24 hours;

[0056] Step S4: washing the modified straw to neutrality and drying at 60°C for 12 hours;

[0057] Step S5: The material obtained in step S4 is placed in an acetone-potassium permanganate mixed solution, heated, soaked and stirred for modification; the mass concentration of acetone solution in the mixed solution is 4%, the mass concentration ...

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Abstract

The invention provides a method for modifying kenaf straw with acetone-potassium permanganate. The method comprises: S1, crushing kenaf straw, screening, and screening out straw with a particle size of 60-100 mesh for spare use; S2, washing the straw with water, and drying the straw at the temperature of 40-80 DEG C; S3, immersing and modifying the straw obtained in the step S2 in a NaOH solution;wherein the concentration of the NaOH solution is 1-4 mol / L, the volume of the NaOH solution is 15-30 times that of the straw, and the soaking time is 2-48 hours; S4, washing the straw modified in S3with water to be neutral, and drying at 55-65 DEG C; S5, the straw obtained in the step S4 is placed in an acetone-potassium permanganate solution to be heated, soaked, stirred and modified; S6, washing the straw obtained in the step S5 with water until the straw is neutral, and drying the straw at 55-65 DEG C to obtain the modified kenaf straw cellulose oil absorption material. The material is low in production cost and high in adsorption capacity.

Description

Technical field: [0001] The invention belongs to the technical field of environmental treatment, and specifically relates to a method for modifying kenaf straw with acetone-potassium permanganate, a product prepared by the method, and an application of the product in purifying oil-polluted water bodies. Background technique: [0002] The vigorous development of the economy is inseparable from the support of energy. With the increasing demand for energy, petroleum and petroleum products play a vital role in human production and life. However, in the process of oil development, smelting and product use, a large amount of oil pollutants enter the water environment, destroying the ecological balance of the entire water body and causing immeasurable harm. [0003] Among various methods for treating water body oil pollution, the adsorption method has the advantage of being fast and efficient. Most of the high-efficiency oil-absorbing materials currently available on the market ar...

Claims

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Application Information

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IPC IPC(8): B01J20/24C02F1/28C02F1/40B01J20/30C02F101/34C02F101/30
CPCB01J20/24B01J20/22B01J20/04C02F1/40C02F1/286C02F1/285C02F1/281C02F2101/30C02F2101/34
Inventor 许正文陈谊陵刘洋李成楷史静于江华左晓俊
Owner NANJING UNIV OF INFORMATION SCI & TECH
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