Adsorbing-growing aqueous phase heavy metal adsorbing material and preparation method and application thereof

A technology for adsorbing materials and heavy metals, applied in the field of environment and materials, can solve problems such as oyster shell waste pollution and secondary pollution, and achieve the effects of strong market competitiveness, improved quality, and large surface area

Active Publication Date: 2015-05-13
FUJIAN XINSEN CARBON
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  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to provide an adsorption-growth water-phase heavy metal adsorption material and its preparation method and application. The prepared adsorption-growth water-phase heavy metal adsorption material can effectively adsorb heavy metal ions in sewage and play a role in environmental protection At the same time, it can effectively solve the problems of secondary pollution from aluminum plant sludge and oyster shell waste pollution, and realize waste utilization

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  • Adsorbing-growing aqueous phase heavy metal adsorbing material and preparation method and application thereof
  • Adsorbing-growing aqueous phase heavy metal adsorbing material and preparation method and application thereof
  • Adsorbing-growing aqueous phase heavy metal adsorbing material and preparation method and application thereof

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preparation example Construction

[0022] The specific steps of the preparation method of the adsorption-growth water phase heavy metal adsorption material prepared by utilizing aluminum plant sludge, silicon micropowder, oyster shell and graphite powder are as follows:

[0023] (1) The sludge from the aluminum plant and the oyster shell powder sieved by the ball mill were put into a high-temperature box furnace for pre-calcination. The calcination temperature was 900 °C, the holding time was 1 h, and the heating rate was 5 °C / min.

[0024] (2) Mix the pretreated aluminum plant sludge, silicon micropowder, and oyster shell powder in a certain proportion according to the formula and put them into the ball mill, add the corresponding amount of graphite pore-forming agent, dry ball mill and mix, and pass through 50 Mesh sieve. Add an appropriate amount of deionized water to the uniformly mixed powder for granulation, and carry out 24h aging treatment on the powder.

[0025] (3) Weigh 2 g of the powder that has be...

Embodiment 1

[0028] The weight ratio of the raw material formula: aluminum plant sludge 30wt%, silicon micropowder 23wt%, oyster shell 45 wt% and graphite powder 2 wt%, respectively put the aluminum plant sludge and oyster shell into a high-temperature box furnace at 900 ° C Pre-burn for 1 hour, then weigh the pretreated aluminum plant sludge, silicon micropowder, oyster shell powder and graphite powder in a certain proportion according to the formula and carry out ball milling and mixing. Take 2 g of powder that has been stale for 1 day, and mold it under the condition of a pressure of 2 MPa. The sample is placed in a high-temperature box furnace at 1000 °C for 2 h, and then cooled with the furnace to obtain a porous hollow columnar sample. Put the sintered sample in a hydrothermal kettle, add phosphoric acid solution, and carry out hydrothermal treatment at 5 MPa pressure and 300 °C for 8 h. After the hydrothermal treatment is completed, the sample is dried and the adsorption-growth aqueo...

Embodiment 2

[0033] The weight ratio of the raw material formula: aluminum plant sludge 35wt%, silica powder 28wt%, oyster shell 35 wt% and graphite powder 2 wt%, respectively put the aluminum plant sludge and oyster shell into a high-temperature box furnace at 900 ° C Pre-burn for 1 hour, then weigh the pretreated aluminum plant sludge, silicon micropowder, oyster shell powder and graphite powder in a certain proportion according to the formula and carry out ball milling and mixing. Take 2 g of powder that has been stale for 1 day, and mold it under the condition of a pressure of 2 MPa. The sample is placed in a high-temperature box furnace at 1000 °C for 2 h, and then cooled with the furnace to obtain a porous hollow columnar sample. Put the sintered sample in a hydrothermal kettle, add phosphoric acid solution, and carry out hydrothermal treatment at 5 MPa pressure and 300 °C for 8 h. After the hydrothermal treatment is completed, the sample is dried and the adsorption-growth aqueous pha...

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Abstract

The invention discloses an adsorbing-growing aqueous phase heavy metal adsorbing material and a preparation method and application thereof. The preparation method comprises the following steps: ball-milling and mixing pre-treated aluminum manufacturer sludge, oyster shell powder, silica powder and graphite powder, uniformly mixing, pelleting, staling, molding and sintering, performing hydrothermal reaction with a phosphoric acid solution, and drying to obtain the adsorbing-growing aqueous phase heavy metal adsorbing material. Waste resources such as aluminum manufacturer sludge in a waste aluminum profile manufacturer, silica powder produced by an iron alloy smelting plant and oyster in the farm produce fair are used as raw material to develop the adsorbing-growing aqueous phase heavy metal adsorbing material, so that the heavy metal ions in the sewage can be effectively adsorbed, and the problem of heavy metal water pollution is solved. The waste is used for treating the pollution, the waste recovery is reasonably realized, and the raw material cost is greatly reduced; the preparation method is simple, low in cost and easy to popularize, and capable of promoting the sustainable coordinatable development of the social economy and the environment.

Description

technical field [0001] The invention belongs to the field of environment and materials, and in particular relates to an adsorption-growth aqueous phase heavy metal adsorption material and its preparation method and application. Background technique [0002] At present, environmental problems are receiving more and more attention, and the problem of heavy metal water pollution caused by industrial and social activities needs to be solved urgently. Aluminum plant sludge is produced during the surface treatment of aluminum profiles, and its main components are γ-AlOOH and a small amount of Fe 3 o 4 , CaO, K 2 O and Na 2 O and other impurities, the amount of this kind of sludge is very large. A large aluminum profile enterprise can produce more than 10,000 tons of wet sludge a year. A large amount of accumulated sludge not only affects the normal production of the aluminum profile factory, but also causes secondary pollution. Oyster shell has a special physical structure, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/20
CPCB01J20/043B01J20/08B01J20/103B01J20/20B01J2220/4806C02F1/281C02F2101/20
Inventor 于岩何亚军李杰张复伟
Owner FUJIAN XINSEN CARBON
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