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Method for preparing aerogel-like environmental functional material by using green solvent and application of aerogel-like environmental functional material

A functional material, green solvent technology, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc. Promote application and upgrade, low crystallinity, easy to scale effect

Active Publication Date: 2021-08-03
SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of industrial wastewater with complex components. The wastewater may contain oil, heavy metal ions, ionic dyes, etc. Direct discharge will cause serious pollution to rivers, lakes and soil. The existing technology generally needs to treat the wastewater before discharging it. Purification treatment, the use of adsorbents to adsorb pollutants in wastewater is a common method in wastewater purification treatment, but the existing adsorbent preparation process is complex, cumbersome, time-consuming, low production efficiency, and the powder is not granular. Conducive to application, can not be recycled after use, can not be degraded and other disadvantages

Method used

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  • Method for preparing aerogel-like environmental functional material by using green solvent and application of aerogel-like environmental functional material

Examples

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Embodiment 1

[0037] A method for preparing an airgel-like environmental functional material by a green solvent, comprising the following preparation steps:

[0038] Step 1. Recycle the discarded corn stalks in the crops, and after natural air drying, remove the leaves, outer skin and stem nodes of the corn stalks to obtain corn pith, and cut the corn pith to a length of 1 cm for later use;

[0039] Step 2: Weigh 56g of choline chloride and 36g of organic carboxylic acid and put them in the same beaker, the organic carboxylic acid is oxalic acid, put it in an oven at 120°C, melt the reagent in the beaker completely, and then take out the beaker Cool the molten reagent to obtain a deep eutectic solvent, add 270 g of distilled water to the beaker, stir with a glass rod, and make it fully mixed to obtain a mixed solution;

[0040] Step 3. Take 100mL of the mixed solution, add three pieces of corn pith treated in step 1, and react in a water bath at 100°C for 2 hours, then take out the corn pit...

Embodiment 2

[0047]A method for preparing an airgel-like environmental functional material with a green solvent. The difference between Example 2 and Example 1 is that in step 3, corn pith is reacted in a water bath at 60°C. Other preparations of the preparation method of Example 2 Step is identical with embodiment 1.

Embodiment 3

[0049] A method for preparing an airgel-like environmental functional material with a green solvent. The difference between Example 3 and Example 1 is that in step 3, the corn pith is reacted in a water bath at 70°C. Other preparations of the preparation method of Example 3 Step is identical with embodiment 1.

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Abstract

The invention relates to the technical field of wastewater adsorption materials, in particular to a method for preparing an aerogel-like environmental functional material by using a green solvent and application of the aerogel-like environmental functional material. The method comprises the following steps of: 1, obtaining corn pith; 2, mixing choline chloride and organic carboxylic acid, heating to completely melt choline chloride and organic carboxylic acid, cooling, adding distilled water, and uniformly stirring to obtain a mixed solution; 3, adding the corn pith into the mixed solution for full reaction, and after the reaction is completed, fully cleaning the corn pith until the corn pith is neutral, and freezing and drying the corn pith; and 4, mixing a sodium phosphate solution, 2,2,6,6-tetramethylpiperidinooxy and sodium chlorite to obtan a mixed solution, adding a mixed solution of sodium hypochlorite and sodium phosphate into the mixed solution, adding the corn pith, reacting the solution under a shaking table overnight, and then washing, freezing and drying the corn pith. The prepared environmental functional material has a good adsorption effect on oil substances, dye ions and the like in wastewater.

Description

technical field [0001] The invention relates to the technical field of wastewater adsorption materials, in particular to a method for preparing an airgel-like environmental functional material with a green solvent and its application. Background technique [0002] Industrial wastewater (industrial wastewater) includes production wastewater, production sewage and cooling water. pollutants. There are many kinds of industrial wastewater with complex components. The wastewater may contain oil, heavy metal ions, ionic dyes, etc. Direct discharge will cause serious pollution to rivers, lakes and soil. The existing technology generally needs to treat the wastewater before discharging it. Purification treatment, the use of adsorbents to adsorb pollutants in wastewater is a common method in wastewater purification treatment, but the existing adsorbent preparation process is complex, cumbersome, time-consuming, low production efficiency, and the powder is not granular. It is good fo...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/20C02F101/30C02F101/32C02F101/34
CPCB01J20/24B01J20/22B01J20/28047C02F1/286C02F1/285B01J2220/4812B01J2220/4825B01J2220/4806C02F2101/20C02F2101/308C02F2101/203C02F2101/32C02F2101/34
Inventor 彭丹
Owner SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY
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