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Method for high-depth purification of heavy metals in water by utilizing titanium phosphate nano flower material

A technology of coating materials and nanoflowers, applied in chemical instruments and methods, coatings, cation exchange materials, etc., can solve the problems of mass transfer and utilization, and achieve the effect of high selectivity and large adsorption capacity

Active Publication Date: 2018-04-10
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for high-depth purification of heavy metals in water with titanium phosphate nanoflower coating materials that can solve the problems of mass transfer and utilization caused by nanoparticle clogging, and realize deep purification and safety control of heavy metal-containing water bodies

Method used

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  • Method for high-depth purification of heavy metals in water by utilizing titanium phosphate nano flower material
  • Method for high-depth purification of heavy metals in water by utilizing titanium phosphate nano flower material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Measure 1.2 mL of butyl titanate and dissolve 50 mL of ethanol to prepare a 3% butyl titanate-ethanol solution, and add 10 g of D001 type cation exchange resin (manufactured by Hangzhou Zhengguang Industrial Co., Ltd.) into the butyl titanate-ethanol solution , at 40° C., fully stirred and reacted for 5 hours, then added 100 mL of phosphoric acid solution with a mass concentration of 70%, and reacted for 5 hours to form a titanium phosphate nanoflower coating material with a nano-titanium phosphate loading of 5.8%.

[0021] Such as figure 1 As shown, compared with its parent D001 (such as figure 2 As shown), the surface of the resin is coated with a rich nano-titanium phosphate flower-like coating, which fully proves that the preparation is successful.

[0022] Put 15mL of the above-mentioned composite material in a glass adsorption column (ф12×220mm) and put heavy metal-containing water (Pb=0.1mg / L and Ca(II)=200mg / L, Mg(II)=300mg / L, Na(I) =260mg / L, pH=3) flow throu...

Embodiment 2

[0024] Measure 36 mL of butyl titanate and dissolve 150 mL of ethanol to prepare a 30% butyl titanate-ethanol solution, add 20 g of 001x7 type cation exchange resin (manufactured by Hangzhou Zhengguang Industrial Co., Ltd.) to the butyl titanate-ethanol solution, At 60° C., fully stirred and reacted for 12 hours, then added 200 mL of phosphoric acid solution with a mass concentration of 85%, reacted for 20 hours, and formed a titanium phosphate nanoflower coating material with a nano-titanium phosphate loading of 26.3%.

[0025] Put 20mL of the above composite material in a glass adsorption column (ф12×220mm) and put the heavy metal-containing water (Hg=200mg / L and Ca(II)=300mg / L, Mg(II)=120mg / L, Na(I)= 230mg / L, pH=7) flow through the adsorption column equipped with resin-based composite materials from top to bottom, the temperature is controlled at 55°C, the flow rate is 50BV / h, and the concentration of Hg(II) ions in the effluent is 10ppb after being treated by the adsorbent ...

Embodiment 3

[0027] Measure 13.6 mL of butyl titanate and dissolve 170 mL of ethanol to prepare a 10% butyl titanate-ethanol solution, and add 10 g of D113 cation exchange resin (manufactured by Hangzhou Zhengguang Industrial Co., Ltd.) to the butyl titanate-ethanol solution , at 50° C., fully stirred and reacted for 8 hours, then added 200 mL of phosphoric acid solution with a mass concentration of 75%, and reacted for 10 hours to form a titanium phosphate nanoflower coating material with a nano-titanium phosphate loading of 12.1%.

[0028] Put 30mL of the above composite material in a glass adsorption column (ф12×220mm) and put heavy metal-containing water (Cd=1mg / L and Ca(II)=400mg / L, Mg(II)=100mg / L, Na(I)= 360mg / L, pH=4.5) flow through the adsorption column equipped with resin-based composite material from top to bottom, the temperature is controlled at 25°C, the flow rate is 20BV / h, and the concentration of Pb(II) ions in the effluent after adsorbent treatment is 2ppb Below, the proce...

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Abstract

Provided is a preparation method of a titanium phosphate nano flower material. Principally, butyl titanate is used as a precursor and is dissolved in organic alcohol, meanwhile strong-acid cation-exchange resin is added, reaction is performed for 5-12 hours at the temperature of 40-60 DEG C, then a phosphoric acid solution is added, reaction is performed for 5-20 hours, three-dimensional lamellartitanium phosphate nano flowers are formed on the outer surface of the resin, and the mass fraction of the nano titanium phosphate carrying capacity is 5.8-26.3%. A method for removing trace heavy metal ions in water by using the titanium phosphate nano flower material is mainly that the temperature of heavy metal polluted water is controlled to be 5-55 DEG C, the concentration is 0.1-50 mg / L, pHis 3-7, the water flows down to pass through a fixed bed post adsorption device filled with a composite material at the flow velocity of 10-50 BV / h, and the heavy metal polluted water is efficiently purified and reached the hygienic standard for drinking water. The problems of mass transfer and utilization rate caused by nano particle blockage can be solved, and deep purification and safety control of water bodies containing heavy metals are achieved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for purifying heavy metals in water Background technique [0002] Heavy metal pollution in water is a worldwide issue, and high-depth purification of trace heavy metals is an important guarantee for water quality safety. At present, in the field of high-depth purification of heavy metals, the research and development of high-efficiency nanocomposites based on adsorption technology is one of the research priorities and hotspots in recent years. [0003] In recent years, nano-sized metal oxides and phosphates have gradually become new forces for the deep purification of trace heavy metal pollutants due to their strong adsorption of heavy metals and high specific surface area. The most typical ones are iron oxide, aluminum oxide, zirconium oxide, titanium phosphate, etc. However, due to the influence of their own ultrafine size, this kind of h...

Claims

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Application Information

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IPC IPC(8): C02F1/42B01J39/05B01J39/20C08J7/06C02F101/20
CPCB01J39/20B01J39/05C02F1/42C02F2101/20C08J7/06C08J2325/06
Inventor 张庆瑞屈年瑞陈贺张帅其乔丽丽孙奇娜
Owner YANSHAN UNIV
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