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Method for preparing adsorption material by modifying reed stalks

An adsorption material and reed stalk technology, which is applied in the field of preparation of reed stalk adsorption materials, can solve the problem of low nutritional value of roughage, achieve excellent adsorption effect, wide application prospects, and low cost

Inactive Publication Date: 2015-02-25
王胜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reed is also often used as feed. It is rich in non-starch macromolecules such as cellulose, lignin, and hemicellulose, and has low nutritional value as roughage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Choose natural mature reed stalks, wash, mash, dry, grind, and pass through a 70-mesh sieve, using 7% HNO 3 Reflux for 2h, then reflux with 3% NaOH for 1h, wash with water and dry; take 10g of the dried product and place it in a three-necked flask, add 20ml of 2mo / L NaOH solution, 60ml of epichlorohydrin, and heat to reflux for 1h. , Filter, cross-wash with acetone and water 3-4 times, dry at 60℃ to obtain light yellow cross-linked cellulose; add a certain amount of cross-linked fiber into a three-necked flask equipped with reflux condenser and agitator Sodium 3-chloro-2-hydroxypropanesulfonate, 1mol / L dioxane aqueous solution and 1mol / L Na 2 CO 3 The solution was stirred and reacted at 50℃ for a certain period of time, and the product was filtered out. The product was washed three times with acetone and water successively; after washing, it was vacuum-dried to obtain 2-hydroxy-3-sulfonate propyl cellulose ether, namely A kind of reed stalk adsorption material.

Embodiment 2

[0028] Choose natural mature reed stalks, wash, mash, dry, pulverize, and pass through a 70-mesh sieve, using 9% HNO 3 Reflux for 3h, then reflux with 5% NaOH for 2h, wash with water and dry to obtain reed stalk cellulose; take 20g of the prepared cellulose and put it in a three-necked flask, add 20ml NaOH solution with a concentration of 3mo / L and 60ml epoxy chloride in turn Propane, heated to reflux for 2h, filtered, washed with acetone and water to neutrality, dried at 80°C to obtain light yellow cross-linked cellulose; add a certain amount of cellulose to a three-necked flask equipped with a reflux condenser and agitator Cross-linked cellulose, sodium 3-chloro-2-hydroxypropanesulfonate, 1mol / L dioxane aqueous solution and 1mol / L Na 2 CO 3 Shake the solution gently, stir and react for a certain period of time at a temperature of 60℃, and then filter out the product. Wash the product with acetone and water for 3 times; after washing, vacuum dry to obtain 2-hydroxy-3-sulfonic ac...

Embodiment 3

[0030] Choose natural mature reed stalks, wash, mash, dry, pulverize, and pass through a 70-mesh sieve, using 8% HNO 3 Reflux for 3h, then reflux with 4% NaOH for 2h, wash with water and dry to obtain reed stalk cellulose; take 20g of the prepared cellulose and place it in a three-necked flask, add 20ml of NaOH solution with a concentration of 3mo / L and 60ml of epoxy in turn Chloropropane, heated to reflux for 2h, filtered; cross-washed with acetone and water to neutral, dried at 70℃ to obtain light yellow cross-linked cellulose; pour 30g of the obtained cross-linked cellulose into a beaker, and place the beaker In a 20℃ water bath environment, add 20g sodium bisulfite, 20g sodium sulfite, and 100g water to the beaker, and stir continuously with an electric stirrer. After reacting for 2h, add 100ml of 1mol / L dioxane aqueous solution to the container. And 1mol / L Na 2 CO 3 The solution is 100ml, reacted at 60℃ for 1h, and the product is filtered out. The product is washed three ti...

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PUM

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Abstract

The invention discloses a preparation method of a natural reed stalk adsorption material. The preparation method comprises the following steps: selecting natural reed stalks, cleaning, pounding, drying, grinding, sieving, and then sequentially performing HNO3 and NaOH refluxing, water washing and drying to obtain reed stalk cellulose; and then performing reaction crosslinking on an NaOH solution and epoxy chloropropane, mixing crosslinked cellulose with 3-chlorine-2-hydroxypropyl sodium sulfonate, a dioxane aqueous solution and an Na2CO3 solution, reacting by controlling the temperature to be 50-60 DEG C, finally sequentially performing cross washing on a product by using acetone and water, and performing vacuum drying after completely cleaning the product to obtain a reed stalk adsorption material finished product. A preparation process disclosed by the invention is short in time consuming and cheap in raw material, is pollution-free, and has wide application prospects.

Description

Technical field [0001] The invention relates to a preparation process of an environmentally friendly adsorption material for adsorbing heavy metals, in particular to a preparation method of a reed straw adsorption material. Background technique [0002] In the 21st century, heavy metal pollution has attracted more and more attention, and pollution sources have also increased. For example, mine drainage, waste rock leaching water, mine tailings drainage, non-ferrous metal smelter dedusting drainage, non-ferrous metal processing plant pickling water, electroplating plant plating washing water, steel plant pickling drainage, as well as electrolysis, pesticides, Wastewater from industries such as pharmaceuticals, paints, and pigments are all important sources of heavy metal wastewater. Heavy metal pollution is different from other pollution sources. Other pollution sources can be automatically degraded through natural methods to reduce or eliminate their harmfulness. Heavy metal pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30
CPCB01J20/24B01J20/3085B01J2220/4825
Inventor 王胜
Owner 王胜
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