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Method for synthesizing Cu2+ adsorption resin from carboxymethyl potato starch and acrylamide

A potato starch and acrylamide technology, which is applied in the fields of adsorption water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., can solve problems such as poor crop growth, pollute grain grains, and produce peculiar smell, and reduce energy consumption. , strong practicability, good adsorption effect

Inactive Publication Date: 2016-10-12
INNER MONGOLIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This waste water is discharged into the water body, which will affect the quality of the water
When the copper content in water reaches 0.01mg / L, it has obvious inhibitory effect on the self-purification of water; if it exceeds 3.0mg / L, it will produce peculiar smell; if it exceeds 15mg / L, it will not be drinkable
If copper-containing wastewater is used to irrigate farmland, copper will accumulate in the soil and crops, which will cause poor growth of crops, especially rice and barley, and will pollute grains

Method used

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  • Method for synthesizing Cu2+ adsorption resin from carboxymethyl potato starch and acrylamide
  • Method for synthesizing Cu2+ adsorption resin from carboxymethyl potato starch and acrylamide
  • Method for synthesizing Cu2+ adsorption resin from carboxymethyl potato starch and acrylamide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Weigh 25g of acrylamide, dissolve it in 25ml of deionized water, weigh 7.04g of sodium hydroxide, dissolve it in 15ml of deionized water, add the sodium hydroxide solution dropwise to the above acrylamide solution, and stir at room temperature Hydrolyze acrylamide; weigh 2.5g carboxymethyl potato starch and mix with 35ml deionized water evenly, mix the hydrolyzate of acrylamide and carboxymethyl potato starch mixture evenly, add 5ml of potassium persulfate with a concentration of 10mg / ml Solution, 6ml of N,N'-methylenebisacrylamide solution with a concentration of 2.5mg / ml, nitrogen gas, slowly heating to gradually increase the temperature of the reaction system, the polymerization reaction occurs at 35°C, and when the temperature rises to 80°C Keep it warm for 1.5h, then take out the product, dry and pulverize to obtain the adsorbed Cu 2+ Resin, the adsorption Cu that present embodiment makes 2+ Resin in 1000mlCu 2+ Cu in a solution with a concentration of...

Embodiment 2

[0019] Example 2: Weigh 20g of acrylamide, dissolve it in 25ml of deionized water, weigh 5.63g of sodium hydroxide, dissolve it in 15ml of deionized water, add the sodium hydroxide solution dropwise to the above acrylamide solution, and stir at room temperature Hydrolyze acrylamide; weigh 2.5g carboxymethyl potato starch and mix with 30ml deionized water evenly, mix the hydrolyzate of acrylamide and carboxymethyl potato starch mixture evenly, add 5ml of potassium persulfate with a concentration of 10mg / ml Solution, 6ml of N,N'-methylenebisacrylamide solution with a concentration of 2.5mg / ml, nitrogen gas, slowly heating to gradually increase the temperature of the reaction system, the polymerization reaction occurs at 39°C, and when the temperature rises to 80°C Keep it warm for 1.5h, then take out the product, dry and pulverize to obtain the adsorbed Cu 2+ Resin, the adsorption Cu that present embodiment makes 2+ Resin in 1000mlCu 2+ Cu in a solution with a concentration of...

Embodiment 4

[0021] Example 4: Weigh 25g of acrylamide, dissolve it in 25ml of deionized water, weigh 7.04g of sodium hydroxide, dissolve it in 15ml of deionized water, add the sodium hydroxide solution dropwise to the above acrylamide solution, and stir at room temperature Hydrolyze acrylamide; weigh 2.5g carboxymethyl potato starch and mix with 30ml deionized water evenly, mix the hydrolyzate of acrylamide and carboxymethyl potato starch mixture evenly, add 5ml of potassium persulfate with a concentration of 10mg / ml solution, 10ml of N,N'-methylenebisacrylamide solution with a concentration of 2.5mg / ml, nitrogen gas, and slow heating to gradually increase the temperature of the reaction system. The polymerization reaction occurs at 29°C, and when the temperature rises to 80°C Keep it warm for 1.5h, then take out the product, dry and pulverize to obtain the adsorbed Cu 2+ Resin, the adsorption Cu that present embodiment makes 2+ Resin in 1000mlCu 2+ Cu in a solution with a concentration...

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Abstract

The invention discloses the preparation of adsorbed Cu by using carboxymethyl potato starch and acrylamide as raw materials 2+ The method of ionic resin, the main feature is firstly hydrolyzing acrylamide with sodium hydroxide solution, and then heating in a water bath under the protection of nitrogen, so that carboxymethyl potato starch and partially hydrolyzed acrylamide are grafted and polymerized at 30-60°C to prepare adsorption Cu 2+ resin. Best product in 1000mlCu 2+ Cu in a solution with a concentration of 10ppm 2+ The adsorption capacity is 33.13mg / g, the removal rate is 98.78%, in 1000mlCu 2+ Cu in a solution with a concentration of 400ppm 2+ The adsorption capacity is 918.79mg / g, and the removal rate is 94.42%. The present invention adsorbs Cu 2+ The preparation of ion resin has the following advantages: the parent carboxymethyl potato starch is soluble in water, thus no gelatinization is required, the process is simple and easy, the graft polymerization reaction temperature is low, and the practicability is strong, and the obtained adsorbed Cu 2+ Resin to Cu 2+ High ion adsorption capacity.

Description

technical field [0001] The invention relates to a functional polymer material used in the field of environmental governance—adsorbed Cu 2+ The preparation method of ion resin, especially refers to the preparation of adsorption Cu with carboxymethyl potato starch and partially hydrolyzed acrylamide with sodium hydroxide 2+ ionic resin method. Background technique [0002] Due to the enrichment and stability of heavy metals, it is difficult to degrade in the environment. Therefore, compared with other pollutions, heavy metal pollution has become a major environmental problem that threatens human development. Copper is contained in wastewater from smelting, metal processing, machine manufacturing, organic synthesis and other industries. Among them, wastewater from metal processing and electroplating factories contains the highest amount of copper, with copper content of tens to hundreds of milligrams per liter of wastewater. This waste water is discharged into the water body,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/56B01J20/30B01J20/26C02F1/28
CPCC08F251/00B01J20/264C02F1/285C02F2101/20
Inventor 温国华宋丽君张雨亭宋丽红渠清李茹韩宗壮柳青
Owner INNER MONGOLIA UNIVERSITY
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