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Preparation method of novel heavy metal ion adsorbent

An adsorbent and heavy metal technology, applied in alkali metal compounds, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of difficult separation, low adsorption efficiency, and small adsorption capacity, and achieve high adsorption efficiency and high adsorption capacity Large and strong adsorption capacity of heavy metals

Inactive Publication Date: 2016-11-16
ANHUI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome technical problems such as low adsorption efficiency, small adsorption capacity and difficult separation of metal adsorbents in the prior art, and to provide a preparation method of a novel heavy metal adsorbent

Method used

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  • Preparation method of novel heavy metal ion adsorbent
  • Preparation method of novel heavy metal ion adsorbent
  • Preparation method of novel heavy metal ion adsorbent

Examples

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Embodiment 1

[0024] 1) Mix 20 parts of 10% 3-aminopropyltriethoxysilane (APTES) aqueous solution with acetic acid solution to obtain combined solution A, the amount of acetic acid solution added makes the pH value of combined solution A 4, Then mix the combination solution A with 10 parts of glycerin to obtain the combination solution B, then put the combination solution B in a beaker and stir thoroughly and add 0.4 parts of FeO nanoparticles to obtain the mixed solution C, mix the mixed solution C, and oscillate with 200W ultrasonic 1min;

[0025] 2) Put the ultrasonically oscillated mixed solution C on a constant temperature magnetic stirrer for constant temperature stirring reaction, the reaction temperature is 90°C, the reaction time is 3h, after the reaction is completed, cool to room temperature, and then add citric acid to the mixed solution C respectively 20 parts and 20 parts of pyridine to obtain the reaction solution D. Stir the reaction solution D at a constant temperature for ...

Embodiment 2

[0028] Such as Figure 1-4 As shown, the preparation method in this example is: 1) 20 parts of γ-glycidyl etheroxypropyltrimethoxysilane aqueous solution with a mass fraction of 10% is mixed with acetic acid solution to obtain combination liquid A, and the acetic acid solution is added amount so that the pH of combination liquid A is 4, and then mix combination liquid A and 10 parts of glycerin to obtain combination liquid B, then place combination liquid B in a beaker and stir thoroughly and add Fe 2 o 3 0.4 parts of nanoparticles to obtain a mixed solution C, mix the mixed solution C, and 200W ultrasonic vibration for 1min;

[0029] 2) Put the ultrasonically oscillated mixed solution C on a constant temperature magnetic stirrer for constant temperature stirring reaction, the reaction temperature is 90°C, the reaction time is 3h, after the reaction is completed, cool to room temperature, and then add citric acid to the mixed solution C respectively 20 parts and 20 parts of ...

Embodiment 3

[0032] 1) 10 parts of γ-glycidyl etheroxypropyl trimethoxysilane with a mass fraction of 10% and 15 parts of an aqueous solution of γ-(methacryloyloxy)propyl trimethoxysilane with a mass fraction of 10% The mixed solution is mixed with the acetic acid solution to obtain the combination solution A, the amount of the acetic acid solution added makes the pH value of the combination solution A 4, and then the combination solution A and 25 parts of glycerin are mixed to obtain the combination solution B, and then the combination solution B is placed in Stir well in the beaker and add Fe 2 o 3 1 part of nanoparticles to obtain the mixed solution C, mix the mixed solution C, and 200W ultrasonic vibration for 1min;

[0033] 2) Put the ultrasonically oscillated mixed solution C on a constant temperature magnetic stirrer for constant temperature stirring reaction, the reaction temperature is 90°C, the reaction time is 3h, after the reaction is completed, cool to room temperature, and t...

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Abstract

The invention discloses a preparation method of a novel heavy metal ion adsorbent. The method comprises the following steps: (1) mixing a silane coupling agent aqueous solution with an acetic acid solution to obtain a combined solution A, then mixing the combined solution A with glycerinum to obtain a combined solution B, then adding the combined solution B into a beaker, fully stirring, adding magnetic iron nanoparticles to obtain a mixed solution C, uniformly mixing and carrying out ultrasonic treatment; (2) carrying out constant-temperature stirring reaction on the mixed solution C, respectively adding citric acid and an acid-amine condensing agent into the mixed solution C to obtain a reaction solution D, carrying out constant-temperature stirring reaction on the reaction solution D, and adding sodium bicarbonate solid, regulating pH to obtain a reaction solution E; and (3) adding a powerful magnet at the bottom of the beaker, standing, pouring supernatant, collecting magnetic iron oxide nanoparticle crude products F adsorbed on the powerful magnet and modified by the citric acid, then washing with water and drying at room temperature to obtain the adsorbent. The prepared adsorbent is easy to separate, has high heavy metal ion adsorption capability, is environmentally friendly, and is free of secondary pollution.

Description

technical field [0001] The invention relates to a preparation method of an adsorbent, in particular to a preparation method of an adsorbent with high efficiency, environmental protection and super adsorption capacity for most metal ions. Background technique [0002] The rapid development of emerging industries has led to an increase in the discharge of wastewater containing heavy metal ions, causing pollution to the water environment. The existing methods for treating such wastewater mainly include ion exchange method, membrane separation method, chemical precipitation method, flocculation method and adsorption method. Among them, the adsorption method is widely used due to its simple operation, low cost and wide application range. However, traditional adsorbents have disadvantages such as low adsorption efficiency and small adsorption capacity, which make it difficult to meet the requirements of healthy sewage treatment. Magnetic iron oxide nanoparticles (FeO, Fe 2 o 3...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/223B01J20/28009C02F1/285C02F2101/20
Inventor 石先阳余楷
Owner ANHUI UNIVERSITY
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