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Preparation method of loess and itaconic acid copolymer adsorbent

A technology of itaconic acid copolymer and adsorbent, applied in chemical instruments and methods, adsorption of water/sewage treatment, water pollutants, etc., to achieve good biocompatibility, enhanced chelation ability and ion exchange ability, and good adsorption effect of ability

Inactive Publication Date: 2016-01-20
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the modification of loess with biocompatible polymers.

Method used

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  • Preparation method of loess and itaconic acid copolymer adsorbent
  • Preparation method of loess and itaconic acid copolymer adsorbent
  • Preparation method of loess and itaconic acid copolymer adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of loess itaconic acid copolymer compound: In a 100mL three-necked flask, add 4g loess (LC) and 20mL distilled water, stir and disperse evenly; dissolve 4g itaconic acid (IA) in 20mL distilled water and add to the three-necked flask , stir and disperse evenly; then add 6g of methacrylic acid β- Hydroxyethyl ester (HEMA), 4g N - Vinylpyrrolidone (NVP), 0.6g N,N ’-Methylenebisacrylamide (MBA), stir and disperse evenly; then N 2 Protect, heat up to 50°C; add 0.5g potassium persulfate, stir and react for 8 hours, wash and dry the complex to obtain loess itaconic acid copolymer complex.

[0030] The effect of the loess itaconic acid copolymer on Cu in water 2+ The removal rate reaches 96.5%, and the adsorption capacity is 176.8mg / g; the decolorization rate for malachite green reaches 96.1%, and the adsorption capacity is 96.1mg / g.

Embodiment 2

[0032] Preparation of loess itaconic acid copolymer compound: In a 100mL three-necked flask, add 4g loess (LC) and 20mL distilled water, stir and disperse evenly; dissolve 2g itaconic acid (IA) in 20mL distilled water and add to the three-necked flask , stir and disperse evenly; then add 4g of methacrylic acidβ- Hydroxyethyl ester (HEMA), 4g N - Vinylpyrrolidone (NVP), 0.8g N,N ’-Methylenebisacrylamide (MBA), stir and disperse evenly; then N 2 Protect, heat up to 90°C, add 0.7g of ammonium persulfate, stir and react for 5 hours, wash and dry the complex to obtain loess itaconic acid copolymer complex.

[0033] The effect of the loess itaconic acid copolymer on Cu in water 2+ The removal rate reached 95.2%, and the adsorption capacity was 168.9mg / g. The decolorization rate of malachite green reaches 93.4%, and the adsorption capacity is 93.4mg / g.

Embodiment 3

[0035] Preparation of loess itaconic acid copolymer compound: In a 100mL three-necked flask, add 4g loess (LC) and 20mL distilled water, stir and disperse evenly; dissolve 4g itaconic acid (IA) in 20mL distilled water and add to the three-necked flask , stir and disperse evenly; then add 4g of methacrylic acid β- Hydroxyethyl ester (HEMA), 4g N - Vinylpyrrolidone (NVP), 0.8g N,N ’-Methylenebisacrylamide (MBA), stir and disperse evenly; then N 2 Protect, heat up to 70°C; add 0.7g of ammonium persulfate, stir and react for 6 hours to obtain a copolymer, and then wash and dry to obtain a loess itaconic acid copolymer compound.

[0036] The effect of the loess itaconic acid copolymer on Cu in water 2+ The removal rate reached 98.2%, and the adsorption capacity was 178.8mg / g; the malachite green decolorization rate reached 97.0%, and the adsorption capacity was 97.0mg / g.

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Abstract

The invention discloses a preparation method of loess and itaconic acid copolymer adsorbent. The loess and itaconic acid copolymer adsorbent is obtained by conducting in-situ polymerization copolymerization under the effects of organic crosslinker and initiator with loess as a matrix and with itaconic acid, methacrylic acid beta-hydroxy ethyl and N-vinyl pyrrolidone as functional monomers, wherein itaconic acid, methacrylic acid beta-hydroxy ethyl and n-vinyl pyrrolidone are low in price and have biocompatibility. Due to the fact that in the copolymer, some active functional groups are introduced to the surface of loess, the chelation capacity and the ion exchange capacity of loess and metal ions are enhanced, and the loess and itaconic acid copolymer adsorbent has high adsorption capacity for heavy metal ions and cationic dye in waste water. Meanwhile, due to the fact that loess, itaconic acid and the like belong to biocompatible macromolecule monomers, the obtained copolymer has very high biocompatibility and is friendly to the environment; therefore, the loess and itaconic acid copolymer adsorbent is expected to be applied to removal of pollutant in the food industry.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and relates to a preparation method of a loess-itaconic acid copolymer adsorbent, in particular to a kind of loess, itaconic acid and methacrylic acid β -Hydroxyethyl ester and N -The preparation method of the vinylpyrrolidone copolymer adsorbent; the present invention also relates to the application of the composite adsorbent in removing heavy metal copper ions and malachite green dye in water. Background technique [0002] In recent years, with the rapid development of industry and agriculture, groundwater has been seriously polluted, which has posed a serious threat to human survival. The main pollutants are inorganic anions, metal ions, man-made organic chemical pollution and so on. The main sources of heavy metal pollution are metallurgy, chemical production, electroplating, battery industry, paper industry, ceramics, paint and other industries. Heavy metal ions are easy to e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/26C02F1/28C02F101/20C02F101/34C02F101/38
Inventor 何玉凤王丽王莹李虹王荣民
Owner NORTHWEST NORMAL UNIVERSITY
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