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Method for synthesis of Fe<3+> adsorption resin with carboxymethyl potato starch as raw material

A technology of potato starch and carboxymethyl, applied in the direction of adsorption water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., can solve the problems affecting water color, smell, taste, etc., achieve low cost, excellent performance, adsorption powerful effect

Inactive Publication Date: 2016-11-16
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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  • Method for synthesis of Fe&lt;3+&gt; adsorption resin with carboxymethyl potato starch as raw material
  • Method for synthesis of Fe&lt;3+&gt; adsorption resin with carboxymethyl potato starch as raw material
  • Method for synthesis of Fe&lt;3+&gt; adsorption resin with carboxymethyl potato starch as raw material

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Example 1: Weigh 5g of carboxymethyl potato starch and 50ml of deionized water and mix evenly, add 6ml of 30% hydrogen peroxide and oxidize at 50°C for 1h, measure 20g (19.1ml) of acrylic acid, weigh 5.6g of sodium hydroxide and dissolve in In 50ml of deionized water, use the NaOH solution prepared above to neutralize acrylic acid under cooling in an ice-water bath, fully mix the neutralized acrylic acid and its sodium salt solution with the oxidized carboxymethyl potato starch solution, and add 4ml of 2.5mg / ml N, N'-methylenebisacrylamide solution, in N 2 Under protection, heat slowly to increase the temperature of the system gradually. After the polymerization reaction starts, stop stirring, continue to raise the temperature slowly, and keep warm at 80°C for 2 hours. The product is dried and crushed to obtain the product. The product prepared in this example is in Fe in a solution with a concentration of 25ppm 3+ The adsorption capacity is 16.26mg / g.

Embodiment 2

[0023] Example 2: Weigh 5g of carboxymethyl potato starch and mix with 50ml of deionized water evenly, add 6ml of hydrogen peroxide and oxidize at 50°C for 1h, measure 20g (19.1ml) of acrylic acid, weigh 5.6g of sodium hydroxide and dissolve in 50ml of deionized water Ionized water, use the sodium hydroxide solution prepared above to neutralize acrylic acid under cooling in an ice-water bath, fully mix the neutralized acrylic acid and its salt solution with the oxidized carboxymethyl potato starch solution, and add 6ml to a concentration of 2.5 mg / ml N, N'-methylenebisacrylamide solution, in N 2 Under protection, heat slowly to increase the temperature of the system gradually. After the polymerization reaction starts, stop stirring, continue to raise the temperature slowly, keep it at 80°C for 2 hours, dry and pulverize to obtain the product. The product that is made by present embodiment is 35ppmFe at concentration 3+ Fe in solution 3+ The adsorption capacity is 37.98mg / g. ...

Embodiment 3

[0024] Example 3: Weigh 5g of carboxymethyl potato starch and mix with 50ml of deionized water evenly, add 6ml of hydrogen peroxide and oxidize at 50°C for 1h, measure 20g (19.1ml) of acrylic acid, weigh 5.6g of sodium hydroxide and dissolve in 50ml of deionized water Ionized water, use the sodium hydroxide solution prepared above to neutralize acrylic acid under cooling in an ice-water bath, fully mix the neutralized acrylic acid and its salt solution with the oxidized carboxymethyl potato starch solution, and add 4ml to a concentration of 2.5 mg / ml N, N'-methylenebisacrylamide solution, in N 2 Under protection, heat slowly to increase the temperature of the system gradually. After the polymerization reaction starts, stop stirring, continue to raise the temperature slowly, keep it at 80°C for 2 hours, dry and pulverize to obtain the product. The product that is made by present embodiment is 15ppmFe at concentration 3+ Fe in solution 3+ The adsorption capacity is 12.94mg / g. ...

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Abstract

The invention discloses a method for one-pot synthesis of Fe<3+> adsorption resin with carboxymethyl potato starch as a raw material and through hydrogen peroxide oxidation; the method is mainly characterized in that carboxymethyl potato starch is oxidized by hydrogen peroxide, and without separation, washing and purification, the product and acrylic acid having a polymerization inhibitor removed and a sodium salt of acrylic acid are heated with water bath under protection of nitrogen gas to synthesize the Fe<3+> adsorption resin by a one-pot method; the product synthesized under the optimum condition has the adsorbing capacity on Fe<3+> with the concentration of 5 ppm be 12.14 mg / g, has the adsorbing capacity on Fe<3+> with the concentration of 55 ppm be 85.53 mg / g, and has the removal rate on Fe<3+> with the concentration of 5-55 ppm be 15.87%-28.82%. The method has the advantages that hydrogen peroxide oxidation of the carboxymethyl potato starch has no need of separation, purification or washing in traditional oxidation of carboxymethyl potato starch, and polymerization can be carried out without additional addition of an initiator; therefore, the synthesis of the Fe<3+> adsorption resin has the advantages of simple process, low cost, and easier scale production; and due to relatively high adsorption capacity on Fe<3+>, the product has a good application prospect in the aspects of Fe<3+>-containing wastewater treatment, soil remediation and the like.

Description

technical field [0001] The invention discloses a novel adsorption Fe 3+ Resin and preparation method thereof, specifically relate to for containing Fe 3+ Sewage treatment, soil and river pollution control, etc., belong to the field of environmental functional materials. Background technique [0002] The process of industrialization and urbanization is getting faster and faster. Industrial sewage, mining wastewater, and urban sewage are discharged directly to the environment without effective treatment, resulting in heavy metal pollution in water areas. At the same time, as these waters are used for irrigation, they also pollute a lot of water. Cultivated land. At present, the treatment methods for heavy metal ions nationwide mainly include neutralization precipitation, sulfide precipitation, chemical reduction, electrochemical reduction, ion exchange, and biological treatment. However, the neutralization precipitation method is not effective for the removal of low-concentr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/06C08F222/38C08B31/18B01J20/24B01J20/30C02F1/28C02F101/20
CPCC08F251/00B01J20/24B01J2220/4825C02F1/286C02F2101/20C08B31/185C08F220/06C08F222/385
Inventor 温国华张建平刘广华李媛张静陈超柳青李源
Owner INNER MONGOLIA UNIVERSITY
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