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Method for preparing magnetic cellulose aerogel by utilizing waste paper

A technology of cellulose airgel and waste paper fiber, which is applied in the fields of environment-friendly materials, adsorbents, and fine chemicals, can solve the problems of cumbersome process and high raw material requirements, and achieve the effect of simple manufacturing process, simple production process and easy collection

Active Publication Date: 2017-04-26
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It basically needs to prepare and form nanocellulose, and then proceed to the next operation step. The process is cumbersome and the requirements for raw materials are also high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A method for preparing magnetic cellulose airgel from waste paper, which specifically includes the following steps:

[0063] (1) Pulverize 0.5 parts of waste paper box fragments and sieve with a 20-mesh screen to obtain waste paper fiber powder, and add it to the solution diluted with 1.2 parts of sodium hydroxide reagent at a material-to-liquid ratio of 1:10g / ml Immerse in a sodium hydroxide solution with a mass concentration of 0.01%, and boil and reflux for 6 hours under normal pressure. After the reflux is completed, filter out the solids in the sodium hydroxide solution and wash until the washing liquid is neutral. It is added to the mixed solution of 1.3 parts of 0.1mol / L tetramethylpiperidine nitrogen oxide mixed with 1.4 parts of 0.05mol / L sodium hypochlorite solution with an equal volume of sodium hydroxide solution, and at 55°C After boiling and refluxing for 6 hours, filter out the solids in the mixed solution, wash until the washing solution is neutral, and ...

Embodiment 2

[0072] A method for preparing magnetic cellulose airgel from waste paper, which specifically includes the following steps:

[0073] (1) Grind 0.8 parts of waste paper and sieve it with a 20-mesh sieve to obtain waste paper fiber powder, and add it to the mass concentration diluted by 3 parts of sodium hydroxide reagent according to the ratio of material to liquid: 1:12g / ml Immerse in 0.1% sodium hydroxide solution, and boil and reflux for 7 hours under normal pressure. After the reflux is completed, filter out the solids in the sodium hydroxide solution, and wash until the washing liquid is neutral, then add it to Add to the mixed solution of 3 parts of 0.8 mol / L tetramethylpiperidine nitrogen oxide and 3 parts of 1 mol / L sodium hypochlorite solution with the same volume as the sodium hydroxide solution, and boil and reflux under the condition of 55 °C After 8 hours, filter out the solids in the mixed solution, wash until the washing solution is neutral, and dry to obtain rege...

Embodiment 3

[0082] A method for preparing magnetic cellulose airgel from waste paper, which specifically includes the following steps:

[0083] (1) Grind 1.1 parts of waste kraft paper and sieve with a 40-mesh sieve to obtain waste paper fiber powder, and add it to the mass concentration diluted by 1.4 parts of potassium hydroxide reagent according to the ratio of material to liquid: 1:13g / ml Immerse in 1% potassium hydroxide solution, and boil and reflux at normal pressure for 6 hours. After the reflux is completed, filter out the solids in the potassium hydroxide solution, and wash until the washing liquid is neutral, then add Put it into a mixed solution of 1.3 parts of 1mol / L tetramethylpiperidine nitrogen oxide and 1.5 parts of 1.5mol / L sodium hypochlorite solution with an equal volume of potassium hydroxide solution, and boil and reflux at 65°C After 8 hours, filter out the solids in the mixed solution, wash until the washing solution is neutral, and dry to obtain regenerated cellul...

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PUM

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Abstract

The invention discloses a method for preparing magnetic cellulose aerogel by utilizing waste paper. An ultra-light multi-porous gas magnetic hydrophobic aerogel adsorbing material is prepared by using waste paper fibres in life as a raw material; waste paper regenerated cellulose gel is prepared by utilizing an microwave auxiliary ionic liquid dissolution method; black red waste paper cellulose aerogel is obtained through magnetic modification and hydrophobic and oleophobic modification. The magnetic cellulose aerogel disclosed by the invention can effectively remove a variety of organic pollutants and oily materials leaked in water; the absorption multiplying power is high; oil is absorbed thoroughly; an adsorbing material is non-toxic and harmless; the adopted magnetic collecting method is simple and easy to use; secondary pollution is low; the preparation method is simple in process and mild in conditions; waste can be changed into treasure by conventional industrial equipment and low-cost raw materials; the emission of waste water, waste gas and waste residues is avoided in a production process; the method has a wide popularization application value and social significance.

Description

technical field [0001] The invention relates to the fields of fine chemicals, environment-friendly materials and adsorbents, in particular to a method for preparing magnetic cellulose airgel by using waste paper. Background technique [0002] In recent years, with the increasing development of offshore oil resources, oil spill accidents have been increasing. Similar oil spills happen every year in the world. With the acceleration of industrial society, my country's oil pollution is becoming more and more severe. Therefore, there is an urgent need to develop a fast, efficient and economical absorbent to clean up oil spills from the water surface. After long-term exploration and efforts, the current treatment methods for oil spill accidents mainly include physical, biological and chemical methods. Chemical methods include oil dispersants, dispersants, oil coagulants, etc., but oil dispersants will cause secondary pollution to the sea surface . Physical methods mainly includ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/42C08J9/28C08J7/14C08J3/075C08L1/02C08B16/00C08B1/08B01J20/26B01J20/30C10G25/00C11B3/10B01J20/28
CPCB01J20/06B01J20/22B01J20/223B01J20/24B01J20/26B01J20/28009B01J20/28047B01J2220/46B01J2220/4831C08B1/08C08B16/00C08J3/075C08J7/14C08J9/28C08J9/42C08J2201/0524C08J2301/02C08J2433/08C08L1/02C10G25/00C11B3/10
Inventor 刘明华杨桂芳刘以凡张玉清
Owner FUZHOU UNIV
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