A self-growing aqueous phase phosphate adsorption material and its preparation method and application

An adsorption material, self-growth technology, applied in the field of environment and materials, can solve the problem of egg shell waste pollution and other problems, achieve good economic benefits, improve adsorption efficiency, and low cost.

Active Publication Date: 2016-09-07
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a self-growth water-phase phosphate adsorption material with a structure and its preparation method and application. Solve the problem of egg shell waste pollution and realize the reuse of waste

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  • A self-growing aqueous phase phosphate adsorption material and its preparation method and application
  • A self-growing aqueous phase phosphate adsorption material and its preparation method and application

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preparation example Construction

[0025] The specific steps of the preparation method of the structure self-growing water phase phosphate adsorption material prepared by using clay and egg shell powder are as follows:

[0026] (1) Put the washed egg shell powder into a high-temperature box furnace for pre-sintering, the calcination temperature is 550°C, the holding time: 1 h, and the egg shell powder is obtained by ball milling and sieving.

[0027] (2) Put the pretreated egg shell powder and clay into the ball mill according to the ratio required by the formula to mix, dry ball mill, pass through a 60-mesh sieve after mixing, then add an appropriate amount of deionized water for granulation, and pass through a 50-mesh sieve After that, it is aged for 24 hours.

[0028] (3) Weigh 2g of stale powder, carry out compression molding under the pressure of 2MPa, and press into it. The pressed hollow cylindrical sample was calcined in a box furnace at 700 °C for 2 h.

[0029] (4) Place the sintered sample in a high...

Embodiment 1

[0031] The weight ratio of the raw material formula is: clay 50wt%, egg shell 50wt%.

[0032] The specific steps of the preparation method are:

[0033] (1) Put the washed egg shell powder into a high-temperature box furnace for pre-sintering, the calcination temperature is 550°C, the holding time: 1 h, and the egg shell powder is obtained by ball milling and sieving.

[0034] (2) Put the pretreated egg shell powder and clay into the ball mill according to the ratio required by the formula to mix, dry ball mill, pass through a 60-mesh sieve after mixing, then add an appropriate amount of deionized water for granulation, and pass through a 50-mesh sieve After that, it is aged for 24 hours.

[0035] (3) Weigh 2g of stale powder, carry out compression molding under the pressure of 2MPa, and press into it. The pressed hollow cylindrical sample was calcined in a box furnace at 700 °C for 2 h.

[0036] (4) Place the sintered sample in a high-pressure heat treatment device and coo...

Embodiment 2

[0039] The weight ratio of the raw material formula is: clay 40wt%, egg shell 60wt%.

[0040] The specific steps of the preparation method are:

[0041] (1) Put the washed egg shell powder into a high-temperature box furnace for pre-sintering, the calcination temperature is 550°C, the holding time: 1 h, and the egg shell powder is obtained by ball milling and sieving.

[0042](2) Put the pretreated egg shell powder and clay into a ball mill according to the ratio required by the formula to mix, dry ball mill, pass through a 60-mesh sieve after mixing, then add an appropriate amount of deionized water for granulation, and pass through a 50-mesh sieve After that, it is aged for 24 hours.

[0043] (3) Weigh 2g of stale powder, carry out compression molding under the pressure of 2MPa, and press into it. The pressed hollow cylindrical sample was calcined in a box furnace at 700 °C for 2 h.

[0044] (4) Place the sintered sample in a high-pressure heat treatment device and cook f...

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Abstract

The invention discloses a structure self-growing aqueous phase phosphate radical adsorbing material and a preparation method and application thereof. The preparation method comprises the following steps: adding clay to pre-sintered egg shell powder, ball-milling and mixing, pelleting, staling, molding, sintering, cooking and drying to obtain the structure self-growing aqueous phase phosphate radical adsorbing material. The problem that the conventional adsorbent cannot avoid adsorption saturation is solved from mechanism, the new breakthrough of the adsorption mechanism is realized, waste resources such as diatomite, silica powder produced by an iron alloy smelting plant and oyster in the farm produce fair are used as raw material to develop the structure self-growing aqueous phase phosphate radical adsorbing material, the phosphate radical ions in the sewage are effectively adsorbed, the problem of egg shell powder pollution is solved while solving the problem of phosphorous-enriched water pollution; the preparation method of the material is simple and effective, low in cost, easy to popularize, and has good economic benefit and environment benefit; and the material can be well put into scale production to promote the sustainable development of the social economy and environment.

Description

technical field [0001] The invention belongs to the field of environment and materials, and in particular relates to a structural self-growing water-phase phosphate adsorption material and a preparation method and application thereof. Background technique [0002] Phosphorus-containing wastewater discharged from human daily production and industrial production has led to a large amount of wastewater rich in nitrogen and phosphorus being discharged into rivers, lakes and seas, causing eutrophication of water bodies and triggering large-scale red tides. The traditional adsorption methods, whether it is physical adsorption or chemical adsorption, generally have the following problems: selectivity, single effect; adsorption saturation problem; contradiction between adsorption capacity and recyclable regeneration. It is very meaningful to study low-cost and high-efficiency phosphorus removal methods to improve natural and economic benefits. [0003] my country produces more than...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F1/58
CPCB01J20/043B01J20/12C02F1/281C02F1/288
Inventor 于岩何亚军张复伟李杰
Owner FUZHOU UNIV
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