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Adsorbing material and preparation method and application thereof

A technology of adsorption materials and raw materials, which is applied in the field of solid waste resource utilization, can solve the problems of low product purity, low adsorption efficiency, and many preparation processes, and achieve the effects of large adsorption capacity, high adsorption efficiency, and simple preparation operations

Active Publication Date: 2019-12-10
INST OF PROCESS ENG CHINESE ACAD OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of many preparation processes, long time-consuming, low product purity and low adsorption efficiency in the existing adsorption materials for phosphorus removal, the object of the present invention is to provide an adsorption material and its preparation method and application. Waste or primary resources are used as raw materials, the preparation method is simple, the cost is low, and it has the advantages of fast adsorption speed, high adsorption efficiency and large adsorption capacity, and can realize the deep phosphorus removal of phosphorus-containing wastewater

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The present embodiment provides a kind of preparation method of adsorption material, and described method comprises:

[0040] Fully mix 100g of fly ash from a certain place in Shanxi, 35g of calcium oxide, and sodium hydroxide solution with a sodium ion concentration of 5g / L, and conduct a hydrothermal reaction at 200°C for 2 hours, then filter the reaction product, wash the filter residue until it is neutral, and put it in Dry at 100° C. for 8 hours, and grind to obtain an adsorption material with a particle size of 0.5 μm.

[0041] The obtained adsorbent material is used to purify the phosphate aqueous solution whose phosphorus concentration is 50ppm, and the mass-to-solution volume ratio of the adsorbent material is 1g:100mL.

[0042] In this embodiment, the concentration of phosphorus in the purified solution is only 0.05ppm, and the adsorption efficiency reaches 99.90%.

Embodiment 2

[0044] The present embodiment provides a kind of preparation method of adsorption material, and described method comprises:

[0045] Fully mix 100g of fly ash from a place in Inner Mongolia, 50g of calcium oxide, and sodium carbonate solution with a sodium ion concentration of 0.1g / L, and conduct a hydrothermal reaction at 180°C for 4 hours, then filter the reaction product, wash the filter residue until it is neutral, Dry at 60° C. for 10 h, and grind to obtain an adsorption material with a particle size of 2 μm.

[0046] The obtained adsorbent material is used to purify the phosphate aqueous solution whose phosphorus concentration is 100ppm, and the mass to solution volume ratio of the adsorbent material is 1g:100mL.

[0047] In this embodiment, the concentration of phosphorus in the purified solution is only 0.12 ppm, and the adsorption efficiency reaches 99.88%.

Embodiment 3

[0049] The present embodiment provides a kind of preparation method of adsorption material, and described method comprises:

[0050] Fully mix 100g of kaolin from a certain place in Shanxi, 70g of calcium oxide, and sodium carbonate and sodium bicarbonate solutions with a total concentration of sodium ions of 15g / L, hydrothermally react at 160°C for 5h, then filter the reaction product, and wash the filter residue until neutral , dried at 120° C. for 7 hours, and ground to obtain an adsorbent material with a particle size of 0.1 μm.

[0051] The obtained adsorbent material is used to purify the phosphate aqueous solution whose phosphorus concentration is 100ppm, and the mass to solution volume ratio of the adsorbent material is 1g:100mL.

[0052] In this embodiment, the concentration of phosphorus in the purified solution is only 0.10 ppm, and the adsorption efficiency reaches 99.90%.

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Abstract

The invention provides an adsorbing material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a raw material containing silicon andaluminum, calcium oxide and an inducer solution, and then carrying out hydrothermal reaction to obtain the adsorbing material. The adsorbing material disclosed by the invention is prepared taking solid wastes or primary resources as raw materials; the preparation method is wide in raw material source, simple to operate, short in reaction period, low in process and equipment cost, free of waste water and waste gas in the preparation process, good in economic and environmental benefits and capable of economically and quickly realizing advanced treatment of various phosphorus-containing waste water, and the adsorption efficiency of phosphorus in the waste water reaches up to 99.8% or above.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of solid waste, and relates to an adsorption material and its preparation method and application. Background technique [0002] With the development of economy and society, phosphorus, as an important nutrient element, is not only widely used in fertilizer, but also in feed, detergent, metal treatment, binder, medicine, catalyst and other fields. At the same time, a large amount of phosphorus-containing wastewater will also be produced. The existence of a large amount of phosphorus in the water body will cause eutrophication of the water body, lead to an imbalance in the ecological environment of the water body, and easily release toxic and harmful substances, thereby seriously endangering aquatic organisms and human health. Therefore, phosphorus removal from wastewater is an important measure to prevent water eutrophication. [0003] Adsorption is a relatively simple method for remo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/12B01J20/28B01J20/30C02F1/28C02F101/10
CPCB01J20/103B01J20/12B01J20/28061C02F1/281C02F2101/105
Inventor 马淑花徐敏第南洪钧王晓辉丁海萍丁健侯泽健
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI