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A kind of magnetic lychee peel adsorption material

A magnetic adsorption material and adsorption material technology, applied in the direction of adsorption of water/sewage treatment, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve the problems of less research and application, ineffective use of resources, environmental pollution, etc. , to achieve the effect of simple process, low cost and good adsorption performance

Inactive Publication Date: 2016-08-17
李碧菡 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Litchi peel is the dried peel of lychee after eating, which is generally discarded as garbage, causing environmental pollution
Recent studies have found that litchi skin contains a large number of hydroxyl (-OH), carboxyl (-COOH) and other groups. The treated litchi skin itself is loose and porous, with a large specific surface area and a wide range of sources. and fewer applications, it has been unable to effectively utilize this resource

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A novel magnetic adsorption material, the main components of the adsorption material are as follows:

[0033] Material

Composition (g)

Remark

Lychee skin

30

Substrate

Fe 3 o 4

15

Substrate

sodium tripolyphosphate

7.5

Surfactant

[0034] Among them, the commercially available lychee skin was dried, crushed, and passed through a 60-mesh sieve, and Fe 3 o 4 The particle size of the powder is 100-1000 nanometers, and the sodium tripolyphosphate is of superior grade.

[0035] The processing method is:

[0036] (1) Weigh FeCl 3 ·6H 2 O10.8116g, FeSO 4 ·7H 2 O5.5604g was dissolved in 200mL ultrapure water, ultrasonicated for 30 minutes to make the dissolving distribution uniform; add ammonia water with a mass fraction of 25-28% dropwise to adjust the pH to 9.2; continue ultrasonication for 60 minutes and then use a magnet for solid-liquid separation; Wash with ultra-pure water until neutral, and dry at 8...

Embodiment 2

[0039] A novel magnetic adsorption material, the main components of the adsorption material are as follows:

[0040] Material

Composition (g)

Remark

Lychee skin

30

Substrate

Fe 3 o 4

10

Substrate

sodium tripolyphosphate

10

Surfactant

[0041] Among them, the commercially available lychee skin was dried, crushed, and passed through a 60-mesh sieve, and Fe 3 o 4 The particle size of the powder is 100-1000 nanometers, and the sodium tripolyphosphate is of superior grade.

[0042] The processing method is:

[0043] (1) According to the molar ratio of Fe 3+ : Fe 2+ =2:1 Weigh the corresponding amount of FeCl 3 ·6H 2 O, FeSO 4 ·7H 2 O was dissolved in 200mL ultrapure water, and ultrasonicated for 30 minutes to make the dissolving distribution uniform; add ammonia water with a mass fraction of 25-28% dropwise to adjust the pH to 9.2; continue ultrasonication for 60 minutes and then use a magnet for solid-liqui...

Embodiment 3

[0046] A novel magnetic adsorption material, the main components of the adsorption material are as follows:

[0047] Material

Composition (g)

Remark

Lychee skin

60

Substrate

Fe 3 o 4

40

Substrate

sodium tripolyphosphate

20

Surfactant

[0048] Among them, the commercially available lychee skin was dried, crushed, and passed through a 60-mesh sieve, and Fe 3 o 4 The particle size of the powder is 50-500 nanometers, and the sodium tripolyphosphate is of superior grade.

[0049] The processing method is:

[0050] (1) According to the molar ratio of Fe 3+ : Fe 2+ =2:1 Weigh the corresponding amount of FeCl 3 ·6H 2 O, FeSO 4 ·7H 2 O was dissolved in 200mL ultrapure water, and ultrasonicated for 30 minutes to make the dissolving distribution uniform; add ammonia water with a mass fraction of 25-28% dropwise to adjust the pH to 9.2; continue ultrasonication for 60 minutes and then use a magnet for solid-liquid ...

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PUM

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Abstract

The invention provides a magnetic litchi rind adsorption material. According to the magnetic litchi rind adsorption material, litchi rind and nano Fe3O4 are taken as main ingredients; full utilization of advantages that, litchi rind is loose and porous, and is high in specific surface area, and excellent in adsorptive properties, is realized; and characteristics of nano Fe3O4 are combined so as to obtain the novel magnetic litchi rind adsorption material. The magnetic litchi rind adsorption material is capable of absorbing dye pollutants in waste water; separation of the dye pollutants from waste water is convenient to realize; the dye pollutants can be recycled; it is confirmed by experiments that after four times of recycling, decolouring efficiency of the magnetic litchi rind adsorption material on methylene blue is still more than 80%; the methylene blue possesses relatively high utilization value and environmental protection benefits.

Description

technical field [0001] The invention relates to the field of composite materials, and in particular provides a novel adsorption material, in particular a magnetic litchi peel adsorption material. Background technique [0002] The pollution of dye wastewater, especially methylene blue dye wastewater, has caused extremely serious harm to the environment. The current total mixed adsorption method for treating the above dye wastewater has the problem that the adsorbent is difficult to separate from the treated wastewater, so the utilization rate of the adsorbent is extremely low and cannot be recycled. And then caused more serious pollution, so this has become the key to restrict the use of fully mixed adsorption treatment wastewater method. Today, with the depletion of resources and the increasing awareness of the environment, the development of new magnetic adsorbents has become an effective choice to solve the problem of solid-liquid separation that is difficult to achieve in...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28
Inventor 李碧菡毕然刘宛晴
Owner 李碧菡
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