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Taking carboxymethyl potato starch and acrylamide as the method for raw material synthesis adsorption Fe3+ resin

A potato starch and acrylamide technology is applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., and can solve problems affecting water color, smell, taste, etc., and achieves strong practicability and simple and easy process flow. , the effect of reducing energy consumption

Active Publication Date: 2018-10-09
INNER MONGOLIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although iron has little toxicity to humans and animals, when the concentration of iron compounds in water is 0.1-0.3mg / L, it will affect the sensory properties of water such as color, smell and taste.

Method used

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  • Taking carboxymethyl potato starch and acrylamide as the method for raw material synthesis adsorption Fe3+ resin
  • Taking carboxymethyl potato starch and acrylamide as the method for raw material synthesis adsorption Fe3+ resin
  • Taking carboxymethyl potato starch and acrylamide as the method for raw material synthesis adsorption Fe3+ resin

Examples

Experimental program
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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 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 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 Fe 3+ Resin, the adsorption Fe that present embodiment makes 3+ Resin in 1000mlFe 3+ Fe in a solution with a concentration of...

Embodiment 2

[0019] Example 2: 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, 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 Fe 3+ Resin, the adsorption Fe that present embodiment makes 3+ Resin in 1000mlFe 3+ Fe in a solution with a concentration of...

Embodiment 3

[0020] Example 3: Weigh 12.5g of acrylamide, dissolve it in 25ml of deionized water, weigh 3.52g of sodium hydroxide, dissolve it in 15ml of deionized water, add the sodium hydroxide solution dropwise to the above-mentioned acrylamide solution, and Stir to 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 persulfuric acid with a concentration of 10mg / ml Potassium 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 28°C, and when the temperature rises to 80°C Insulate at ℃ for 1.5h, then take out the product, dry and pulverize to obtain the adsorbed Fe 3+ Resin, the adsorption Fe that present embodiment makes 3+ Resin in 1000mlFe 3+ Fe in a solution with a concentration ...

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Abstract

The invention discloses a method for synthesizing Fe3+ adsorption resin from carboxymethyl potato starch and acrylamide. The method is mainly characterized in that firstly, acrylamide is hydrolyzed by means of sodium hydroxide solution, and then water-bath heating is conducted under the protection of nitrogen, so that graft polymerization of carboxymethyl potato starch and parts of hydrolyzed acrylamide is achieved at 30-60 DEG C to prepare the Fe3+ adsorption resin. For the best product, Fe3+ adsorption capacity is 36.86 mg / g and removal rate is 88.05% in 1000 ml solution with Fe3+ concentration of 10 ppm, and Fe3+ adsorption capacity is 1072.65 mg / g and removal rate is 94.91% in 1000 ml solution with Fe3+ concentration of 400 ppm. The method has the advantages that the parent carboxymethyl potato starch can be dissolved in water so that gelatinization is not needed, the process is simple and easy to implement, graft polymerization reaction temperature is low, practicality is high, and the Fe3+ adsorption capacity and removal rate of the prepared Fe3+ adsorption resin are high.

Description

technical field [0001] The invention relates to a functional polymer material used in the field of environmental governance—adsorption Fe 3+ The preparation method of ionic resin, especially refers to the preparation of adsorption Fe as the main raw material with carboxymethyl potato starch and acrylamide partially hydrolyzed with sodium hydroxide. 3+ 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. Although iron has little toxicity to humans and animals, when the concentration of iron compounds in water is 0.1-0.3 mg / L, it will affect the sensory properties of water such as color, smell and taste. For example, when the concentration of some iron compounds contained in the water reaches 0.04mg / L, peculiar smell will appear. When the ir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F251/00C08F220/56C08F222/38B01J20/24B01J20/30C02F1/28
CPCB01J20/24B01J2220/4825C02F1/286C02F2101/203C08F251/00C08F220/56
Inventor 温国华宋丽君张雨亭宋丽红渠清柳青李茹陈超
Owner INNER MONGOLIA UNIVERSITY
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