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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  • Abstract
  • Description
  • Claims
  • Application Information

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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

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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

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[0019] Example 1

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

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

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

Example Embodiment

[0023] Example 2

[0024] Measure 36 mL of butyl titanate and dissolve 150 mL of ethanol to prepare a 30% butyl titanate-ethanol solution. Add 20g of 001x7 type cation exchange resin (produced by Hangzhou Zhengguang Industrial Co., Ltd.) into the butyl titanate-ethanol solution. After fully stirring and reacting at 60° C. for 12 hours, 200 mL of phosphoric acid solution with a mass concentration of 85% was added, and reacted for 20 hours to form a titanium phosphate nano-flower coating material with a nano-titanium phosphate loading of 26.3%.

[0025] Put 20mL of the above-mentioned composite material in a glass adsorption column (ф12×220mm) to make water containing heavy metals (Hg=200mg / L and Ca(II)=300mg / L, Mg(II)=120mg / L, Na(I)= 230mg / L, pH=7) Flow through the adsorption column containing resin-based composite material from top to bottom, the temperature is controlled at 55℃, the flow rate is 50BV / h, the Hg(II) ion concentration of the effluent is 10ppb after the adsorbent trea...

Example Embodiment

[0026] Example 3

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

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

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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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