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Preparation method and application of polymerized metal-based vinylpyrrolidone ionic liquid grafted attapulgite composite flocculant

A technology based on vinylpyrrolidone and vinylpyrrolidone, applied in the field of preparation of polymerized metal-based vinylpyrrolidone ionic liquid grafted attapulgite composite flocculants, can solve problems such as troublesome separation process, achieve fast settling speed, simple production process, and not easy to lose Effect

Active Publication Date: 2019-06-11
内蒙古森奇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many reports on palygorskite clay adsorption treatment of wastewater, but palygorskite clay is very troublesome in the later separation process due to its stable colloidal properties

Method used

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  • Preparation method and application of polymerized metal-based vinylpyrrolidone ionic liquid grafted attapulgite composite flocculant
  • Preparation method and application of polymerized metal-based vinylpyrrolidone ionic liquid grafted attapulgite composite flocculant
  • Preparation method and application of polymerized metal-based vinylpyrrolidone ionic liquid grafted attapulgite composite flocculant

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Embodiment 1

[0027] This embodiment specifically relates to a preparation method and application of a polymerized metal-based vinylpyrrolidone ionic liquid grafted attapulgite composite flocculant, which specifically includes the following steps:

[0028] (1) Preparation of functionalized ionic liquid monomer:

[0029] In a 500 ml three-necked flask, add 11.1g (0.1mol) of vinylpyrrolidone (NVP), 24g (0.1mol) of 3-chloropropyltriethoxysilane (3-CTS) and 20ml of ethanol solvent for stirring , under the protection of nitrogen and the temperature of 80 ° C, the reaction was refluxed for 24 h; then the ethanol solvent was evaporated by rotary evaporation, and ethyl acetate and methanol were washed in sequence, and vacuum dried to obtain 28 g of yellow transparent functionalized ionic liquid ([NVP-CTS ]Cl - ), the yield is 80%, and the reaction principle is as follows:

[0030]

[0031] Put 28g of functionalized ionic liquid ([NVP-CTS]Cl - ) into a 250ml beaker, weigh 13g of ferric chlorid...

Embodiment 2

[0041] This embodiment specifically relates to a preparation method and application of a polymerized metal-based vinylpyrrolidone ionic liquid grafted attapulgite composite flocculant, which specifically includes the following steps:

[0042] (1) Preparation of functionalized ionic liquid monomer:

[0043] In a 500 ml three-necked flask, add 11.1g (0.1mol) of vinylpyrrolidone (NVP), 24g (0.1mol) of 3-chloropropyltriethoxysilane (3-CTS) and 20ml of ethanol solvent for stirring , under the protection of nitrogen and the temperature of 80 ° C, the reaction was refluxed for 24 h; then the ethanol solvent was evaporated by rotary evaporation, and ethyl acetate and methanol were washed in sequence, and vacuum dried to obtain 28 g of yellow transparent functionalized ionic liquid ([NVP-CTS ] Cl - ), the yield is 80%:

[0044] Put 28g of functionalized ionic liquid ([NVP-CTS]Cl - ) into a 250ml beaker, weigh 13g of ferric chloride (FeCl 3 ) was slowly added to the liquid in the be...

Embodiment 3

[0050] This embodiment specifically relates to a preparation method and application of a polymerized metal-based vinylpyrrolidone ionic liquid grafted attapulgite composite flocculant, which specifically includes the following steps:

[0051] (1) Preparation of functionalized ionic liquid monomer:

[0052] In a 500 ml three-necked flask, add 11.1g (0.1mol) of vinylpyrrolidone (NVP), 24g (0.1mol) of 3-chloropropyltriethoxysilane (3-CTS) and 20ml of ethanol solvent for stirring , under the protection of nitrogen and the temperature of 80 ° C, the reaction was refluxed for 24 h; then the ethanol solvent was evaporated by rotary evaporation, and ethyl acetate and methanol were washed in sequence, and vacuum dried to obtain 28 g of yellow transparent functionalized ionic liquid ([NVP-CTS ] Cl - ), the yield is 80%:

[0053] Put 28g of functionalized ionic liquid ([NVP-CTS]Cl - ) into a 250ml beaker, weigh 13g of ferric chloride (FeCl 3 ) was slowly added to the liquid in the be...

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Abstract

A preparing method of a metal-based polyvinylpyrrolidone ionic liquid-grafted attapulgite clay composite flocculating agent and applications of the composite flocculating agent are disclosed. The method includes performing in-situ polymerization under actions of an initiator by adopting a functionalized vinylpyrrolidone ionic liquid grafted to the surface of attapulgite clay as a monomer and adopting N,N'-methylenebisacrylamide as a crosslinking agent to produce the metal-based polyvinylpyrrolidone ionic liquid-grafted attapulgite clay composite flocculating agent, and the composite flocculating agent is used for sewage treatment. The preparing method and the applications are advantageous in that the method is simple, raw materials are cheap and easily available, a production process is simple, and the ionic liquid and the attapulgite clay are connected through covalent bonds so that bonding is firm and loss is difficult, the composite flocculating agent is a composite flocculating material with strong functions and is used for domestic sewage treatment, the COD removal rate is 85-98% and the turbidity removing rate is 85-95%.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a preparation method and application of a polymerized metal-based vinylpyrrolidone ionic liquid grafted attapulgite composite flocculant. Background technique [0002] Attapulgite, also known as palygorskite, is a natural non-metallic clay mineral that belongs to sepiolite in mineralogy. Attapulgite soil is produced under special geological environment conditions and has many special and excellent properties. It is widely used in decolorization and water treatment, building materials, light industry, textiles, etc. in the form of adsorbents, binders, additives, additives, catalyst carriers, etc. , geological exploration and other industries. [0003] In recent years, clay minerals have been widely used in sewage treatment due to their unique structure and adsorption properties. Due to its hollow structure and large specific surface area, palygorskite clay ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56
CPCC02F1/56C02F2209/08C02F2209/11
Inventor 张娟奇文贤
Owner 内蒙古森奇科技有限公司
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