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Adsorbent material and its preparation method and application

An adsorption material, walnut shell technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of water treatment, such as difficult to guarantee the effect, long treatment period and high treatment cost, and achieve good economic benefits. and social benefits, low cost, and the effect of benefiting resource utilization

Active Publication Date: 2016-02-03
HUAINAN MINING IND GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the use of chemical methods for phosphorus removal requires a large amount of chemicals, not only the cost of treatment is high, but also the use of chemicals will cause secondary pollution problems; and the use of biological phosphorus removal methods to purify water bodies through the process of plant growth , the treatment cycle is long, and it is difficult to guarantee the effect of water treatment in waters with large differences

Method used

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  • Adsorbent material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Wash, dry or dry the walnut shells and then crush them, then sieve them with a 10-18 mesh nylon sieve to obtain walnut shell particles with a particle size of 1-2 mm, and then wash the walnut shell particles with deionized water Then put it in 60-80 ℃ drying.

[0032] Take 5g of the above-mentioned dried walnut shell particles, put in 25mL pre-configured FeCl 3 solution, the FeCl 3 The concentration of the solution (soaking solution) is 0.5mol / L. In order to ensure the concentration of iron ions, alkali (such as sodium hydroxide) can be used to adjust the pH to 9-10. 3 The immersion time in the solution is about 24 hours. After immersion, the particles are collected by filtration and dried at 60-80°C until the impregnated walnut shell particles with a moisture content of about 10%wt are obtained.

[0033] The impregnated walnut shell particles were placed in a vacuum tube resistance furnace, and subjected to high-temperature heat treatment for 1 hour in an oxygen-free...

Embodiment 2

[0037] Wash, dry or dry the walnut shells and then crush them, then sieve them with a 10-18 mesh nylon sieve to obtain walnut shell particles with a particle size of 1-2 mm, and then wash the walnut shell particles with deionized water Then put it in 60-80 ℃ drying.

[0038] Take 5g of the above-mentioned dried walnut shell particles, put in 25mL pre-configured FeCl 3 solution, the FeCl 3 The concentration of the solution (soaking solution) is 1.0mol / L. In order to ensure the concentration of iron ions, alkali (such as sodium hydroxide) can be used to adjust the pH to 9-10. 3The immersion time in the solution is about 24 hours. After immersion, the particles are collected by filtration, and dried at 60-80°C until the walnut shell particles are dry, and the impregnated walnut shell particles with a moisture content of about 10%wt are obtained.

[0039] The impregnated walnut shell particles were placed in a vacuum tube resistance furnace, and subjected to high-temperature hea...

Embodiment 3

[0042] Wash, dry or dry the walnut shells and then crush them, then sieve them with a 10-18 mesh nylon sieve to obtain walnut shell particles with a particle size of 1-2 mm, and then wash the walnut shell particles with deionized water Then put it in 60-80 ℃ drying.

[0043] Take 5g of the above-mentioned dried walnut shell particles, put in 25mL pre-configured FeCl 3 solution, the FeCl 3 The concentration of the solution (soaking solution) is 1.0mol / L. In order to ensure the concentration of iron ions, alkali (such as sodium hydroxide) can be used to adjust the pH to 9-10. 3 The immersion time in the solution is about 24 hours. After immersion, the particles are collected by filtration, and dried at 60-80°C until the walnut shell particles are dry, and the impregnated walnut shell particles with a moisture content of about 10%wt are obtained.

[0044] The impregnated walnut shell particles were placed in a vacuum tube resistance furnace, and subjected to high-temperature he...

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Abstract

The invention relates to an adsorbing material as well as a preparation method and application thereof. The adsorbing material is charcoal particles obtained by taking walnut shell particles as a carrier. The preparation method comprises the following steps: putting the walnut shell particles into impregnation liquid, and carrying out impregnation for at least 12 hours, wherein the concentration of Fe<3+> in the impregnation liquid is 0.5mol / L-1.0mol / L, and 1g of walnut shell particles is put into at least 5mm of impregnation liquid; and carrying out high-temperature thermal treatment on the impregnated walnut shell particles for 1-2 hours in an oxygen-free environment, wherein the thermal treatment temperature is 200-500 DEG C. The adsorbing material prepared by utilizing the preparation method can be applied to water body treatment, has a good phosphorous removal effect, cannot introduce a novel pollution source, can be used in various water area environments and is environmentally friendly; the preparation method is simple to operate and easy to control and is low in production cost.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an adsorption material prepared from walnut shells and its preparation method and application. The novel adsorption material can be used for water body treatment, especially phosphorus removal treatment. Background technique [0002] Eutrophication of water body is a water pollution phenomenon caused by excessive content of nitrogen, phosphorus and other plant nutrients. It is a relatively serious water pollution problem. beautiful. In order to curb further eutrophication of water bodies, it is necessary to control the inflow of exogenous phosphorus such as domestic sewage, industrial wastewater, and initial rainwater and the release of endogenous phosphorus, and to use materials with adsorption effects to effectively remove phosphorus from water bodies and wetlands. [0003] At present, the commonly used phosphorus removal methods include chemical phosphorus re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/58
Inventor 徐翀邓国志陈永春石先阳谢毫李翠陆春辉
Owner HUAINAN MINING IND GRP