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Straw-fiber composite adsorption material and preparation method thereof

A composite adsorption material and straw fiber technology, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, can solve problems such as short service life and unstable performance of adsorption materials, and achieve excellent adsorption performance and reduce Swelling after absorbing water and increasing the service life

Inactive Publication Date: 2018-04-17
NANYANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrogel composite material prepared by the invention has not undergone a cross-linking reaction, and the performance of the prepared adsorption material is unstable and the service life is short

Method used

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  • Straw-fiber composite adsorption material and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] A straw fiber composite adsorption material, made of the following raw materials in parts by weight: 65 parts of straw, 40 parts of acrylic acid emulsion, 8 parts of nano calcium carbonate, 12 parts of polyethylene glycol, 8 parts of sepiolite powder, 10% silicon 50 parts of sodium nitrate solution, 5 parts of crosslinking agent, 0.2 part of initiator and 0.5 part of dibutyltin dilaurate.

[0024] Wherein the crosslinking agent is N, N-methylenebisacrylamide.

[0025] Wherein the initiator is sodium persulfate.

[0026] A preparation method of straw fiber composite adsorption material, comprising the following steps:

[0027] (1) Crush corn stalks to a particle size of 100 mesh, place them in high-temperature steam at 150°C for 60 minutes, add 2 times the weight of 1mol / L sodium hydroxide solution and soak for 12 hours;

[0028] (2) Then add acrylic emulsion, cross-linking agent, initiator and dibutyltin dilaurate, stir well and react at 60°C for 1 hour, then add nano...

Embodiment 2

[0031] A straw fiber composite adsorption material, made of the following raw materials in parts by weight: 68 parts of straw, 38 parts of acrylic acid emulsion, 9 parts of nano-calcium carbonate, 11 parts of polyethylene glycol, 9 parts of sepiolite powder, and 11% silicon 48 parts of sodium acid solution, 6 parts of crosslinking agent, 0.3 part of initiator and 0.4 part of dibutyltin dilaurate.

[0032] Wherein the crosslinking agent is N, N-methylenebisacrylamide.

[0033] Wherein the initiator is benzoyl peroxide.

[0034] A preparation method of straw fiber composite adsorption material, comprising the following steps:

[0035] (1) Crush corn stalks to a particle size of 120 mesh, place them in high-temperature steam at 140°C for 70 minutes, add 2.2 times the weight of 0.8mol / L sodium hydroxide solution and soak for 14 hours;

[0036] (2) Then add acrylic emulsion, cross-linking agent, initiator and dibutyltin dilaurate, stir well and react at 70°C for 0.8h, then add na...

Embodiment 3

[0039] A straw fiber composite adsorption material, made of the following raw materials in parts by weight: 70 parts of straw, 35 parts of acrylic acid emulsion, 10 parts of nano-calcium carbonate, 10 parts of polyethylene glycol, 10 parts of sepiolite powder, 12% silicon 45 parts of sodium nitrate solution, 7 parts of crosslinking agent, 0.4 part of initiator and 0.3 part of dibutyltin dilaurate.

[0040] Wherein the crosslinking agent is divinylbenzene.

[0041] Wherein the initiator is sodium persulfate.

[0042] A preparation method of straw fiber composite adsorption material, comprising the following steps:

[0043] (1) Crush corn stalks to a particle size of 140 mesh, place them in high-temperature steam at 130°C for 80 minutes, add 2.4 times the weight of 0.7mol / L sodium hydroxide solution and soak for 15 hours;

[0044](2) Then add acrylic emulsion, crosslinking agent, initiator and dibutyltin dilaurate, stir well and react at 80°C for 0.6h, then add nano-calcium ca...

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Abstract

The invention discloses a straw-fiber composite adsorption material and a preparation method thereof and belongs to the technical field of adsorption materials. The straw-fiber composite adsorption material is prepared by weight, 65-75 parts of straw, 30-40 parts of acrylic emulsion, 8-12 parts of nano calcium carbonate, 8-12 parts of polyethylene glycol, 8-12 parts of sepiolite powder, 40-50 parts of 10-15% sodium silicate solution, 5-10 parts of crosslinking agent, 0.2-0.5 part of initiator and 0.2-0.5 part of dibutyltin dilaurate. The straw-fiber composite adsorption material and the preparation method thereof have the advantages that the straw is used for modification, and the prepared adsorption material is high in adsorption rate to heavy metal cations and organic matter such as methylene blue and applicable to the treatment of heavy-metal-polluted wastewater or dye wastewater.

Description

technical field [0001] The invention relates to the technical field of adsorption materials, in particular to a straw fiber composite adsorption material and a preparation method thereof. Background technique [0002] As a by-product and an important resource in agricultural production, straw has broad prospects for resource utilization and commercial utilization. Straw contains a lot of lignin and cellulose. In the past, most of the straws were discarded and burned directly, which was not economical and caused environmental pollution to varying degrees. The utilization rate was relatively low. Straw itself has the advantages of being porous, large specific surface area, and small specific gravity, and has a certain affinity, but its adsorption capacity is not strong. The main components of straw, cellulose and lignin, contain a variety of active functional groups such as hydroxyl and carboxyl groups, which can Carry out chemical modification such as etherification and este...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C08F291/06C08F222/38C08F212/36C02F101/20C02F101/30
CPCB01J20/12B01J20/24C02F1/281C02F1/286C02F2101/20C02F2101/308C08F265/00C08F289/00C08F222/385C08F212/36
Inventor 宋伟张莉徐雪丽马兵张丽
Owner NANYANG INST OF TECH
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