Method for preparing magnetic adsorption material from animal and plant wastes

A magnetic adsorption material, animal and plant technology, applied in the direction of chemical instruments and methods, adsorption water/sewage treatment, alkali metal compounds, etc., can solve the problems such as the need to improve the adsorption efficiency, the high cost of raw material procurement, and the increase in treatment cost, and achieve excellent results Biodegradability, high retention rate of internal structure, and reproducible strength

Active Publication Date: 2019-12-10
HUBEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned documents all use chemical raw materials to synthesize magnetic adsorption materials by hydrothermal method or high-temperature roasting method, and there are the following technical problems: (1) The cost of raw material procurement is high, resulting in an increase in processing costs; (2) The porosity and density of the material are still low. It needs to be further improved, and the adsorption efficiency also needs to be improved; (3) ...

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  • Method for preparing magnetic adsorption material from animal and plant wastes
  • Method for preparing magnetic adsorption material from animal and plant wastes

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Experimental program
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Effect test

Embodiment 1

[0026] Step 1. The bagasse is sheared and pulped (the ratio of bagasse to water is 1:10), and 100 parts by weight of the crude fiber slurry obtained by filtering is added to 100 parts by weight of 64% sulfuric acid aqueous solution, and processed by mechanical stirring for 2 hours. Cellulose nanocrystals were obtained by centrifugal washing and separation.

[0027] Step 2. 20 parts by weight of cellulose nanocrystals are dispersed in 100 parts by weight, 4 parts by weight of surfactants and 2 parts by weight of pore-forming agents and 5 parts by weight of calcium acetate, mechanically stirred for 2 hours, and added 5 parts by weight of concentration of 10% sodium phosphate aqueous solution, mechanical stirring, centrifugal washing, separation and drying to obtain a hydroxyapatite fiber composite material, and continuous heat treatment for 3 hours in an oxygen atmosphere of 180 ° C, and collecting powder to obtain hollow hydroxyapatite.

[0028] Step 3. Disperse 40 parts by wei...

Embodiment 2

[0031] Step 1. The bagasse is sheared and pulped (the ratio of bagasse to water is 1:10), and 200 parts by weight of the crude fiber slurry obtained by filtering is added to 100 parts by weight of 64% sulfuric acid aqueous solution, and processed by mechanical stirring for 4 hours. Cellulose nanocrystals were obtained by centrifugal washing and separation.

[0032] Step 2. 40 parts by weight of cellulose nanocrystals are dispersed in 100 parts by weight, 6 parts by weight of surfactants and 4 parts by weight of pore-forming agents and 10 parts by weight of calcium acetate, mechanically stirred for 6 hours, and added 10 parts by weight of concentration of 10% sodium phosphate aqueous solution, mechanical stirring, centrifugal washing, separation and drying to obtain a hydroxyapatite fiber composite material, in an oxygen atmosphere of 200 ° C, continuous heat treatment for 5 hours, collecting powder to obtain hollow hydroxyapatite.

[0033] Step 3. Disperse 60 parts by weight o...

Embodiment 3

[0036] Step 1. The bagasse is sheared and pulped (the ratio of bagasse to water is 1:10), and 100 parts by weight of the crude fiber slurry obtained by filtering is added to 100 parts by weight of 64% sulfuric acid aqueous solution, and processed by mechanical stirring for 4 hours. Cellulose nanocrystals were obtained by centrifugal washing and separation.

[0037]Step 2. 20 parts by weight of cellulose nanocrystals are dispersed in 100 parts by weight, 6 parts by weight of surfactants and 2 parts by weight of pore-forming agents and 5 parts by weight of calcium acetate, mechanically stirred for 2 hours, and add 10 parts by weight of concentration of 10% sodium phosphate aqueous solution, mechanical stirring, centrifugal washing, separation and drying to obtain a hydroxyapatite fiber composite material, in an oxygen atmosphere of 190 ° C, continuous heat treatment for 4 hours, collecting powder to obtain hollow hydroxyapatite.

[0038] Step 3. Disperse 40 parts by weight of ho...

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Abstract

The invention discloses a method for preparing a magnetic adsorption material from animal and plant wastes, and solves the problems that an existing magnetic adsorption material is poor in biodegradability and difficult to recycle, and the adsorption performance needs to be improved further. According to the technical scheme, crude fiber plant dregs are used as raw materials for preparation, hollow hydroxyapatite/copper ferrite nanoparticles are prepared through nanofiber crystallization, hydroxyapatite molding, medium-temperature template removal and copper ferrite loading, gelatin hydrolysate is prepared by ingeniously using animal waste gel, and hollow porous hydroxyapatite/copper ferrite nanoparticles are supported through crosslinking. According to the method, the process is simple, reaction conditions are mild, the raw materials are simple and easily available, the production cost is low, the method is easy to operate, the prepared adsorption material has high porosity and largespecific surface area, the adsorption performance of the material is greatly improved, the method has the advantages of repeated utilization and stable adsorption efficiency, complex water pollution can be treated, the recycling reproducibility and biodegradability are good, and the method is environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a method for magnetic adsorption materials. Background technique [0002] With the rapid development of my country's economy, in recent years, heavy metal water pollution has been caused in metal smelting, electronics, printing and dyeing, and even household waste, which not only seriously endangers the ecological environment, but also threatens human health. Because heavy metals generally have great toxicity, high mobility and low poisoning concentration, they cannot be biodegraded in water, and are easy to accumulate in organisms, which will cause huge direct environmental damage and long-term potential harm. Therefore, heavy metal pollution has also become a major environmental pollution problem that has been concerned by people in recent years. [0003] At present, there are many methods for water treatment containing heavy metal pollution, mainly includi...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F1/48
CPCB01J20/0237B01J20/048B01J20/24B01J20/28009B01J20/3064B01J20/3078B01J20/3085B01J2220/485B01J2220/4887C02F1/288C02F1/488C02F2303/16
Inventor 郑星赟陈顺
Owner HUBEI UNIV OF TECH
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