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Adsorbing agent for removing chemical nickel and preparation method thereof

An electroless nickel and adsorbent technology, which is applied in the field of removing chemical nickel adsorbents and its preparation, can solve the problems of difficulty in treating chemical nickel-containing wastewater, poor resistance to organic pollution, and insufficient chelating ability, and achieves miniaturization of equipment. , The effect of simple equipment and less adsorbent dosage

Inactive Publication Date: 2016-12-07
JIANGSU HELPER FUNCTIONAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for a considerable number of small and medium-sized companies with low water output, the cost of the above method is too high, and it is not suitable for promotion
[0004] At present, chelating resins are mostly used in industry to remove metal ions in wastewater, such as aminoacetic acid chelating resins and aminophosphonic acid chelating resins through monofunctional (-NH 2 ) or bifunctional (-PO 3 , -NH 2 ) coordinates with metal ions. Although the ion exchange speed of the resin is fast and easy to elute and regenerate, its anti-organic pollution ability is poor and the chelating ability is not strong enough, so it is difficult to treat chemical nickel-containing wastewater.

Method used

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  • Adsorbing agent for removing chemical nickel and preparation method thereof
  • Adsorbing agent for removing chemical nickel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step (1): Preparation of 3-amino-1-hydroxypentylidene-3,3-diphosphonic acid

[0028] Add 21.10g (0.2mol) of 1-amino-2-ethylbutyric acid, 16.39g of phosphoric acid, 27.46g of phosphorus trichloride as raw materials, and 130m1 of chlorobenzene as a solvent, heat and reflux at 100°C for 3h, and cool the resulting mixture to room temperature. Add water and reheat to reflux at 100°C for 2 hours. The yield of the obtained 3-amino-1-hydroxypentylidene-3,3-diphosphonic acid is 42%-61%.

[0029] Step (2): Preparation of Chemical Nickel Sorbent

[0030] In a 1000ml flask with a stirring and temperature control device, add 3-amino-1-hydroxypentylidene-3,3-diphosphonic acid 8g, methacrylic acid 3.5g, diethylene glycol dimethacrylic acid obtained in the previous step 30g of ester, 50g of divinylbenzene, 200g of isoamyl alcohol, 450g of ethyl acetate, 0.5g of benzoyl peroxide, and 2g of azobisisobutyronitrile were mixed evenly and added to the above flask. Adjust the rotation spee...

Embodiment 2

[0034] Step (1): Add 21.10g (0.2mol) of 1-amino-2-ethylbutyric acid, 16.39g of phosphoric acid, 27.46g of phosphorus trichloride as raw material, 150ml of chlorobenzene as solvent, and heat at reflux at 100°C for 3h to obtain The mixture was cooled to room temperature, added water and reheated at reflux at 100°C for 2 hours. The yield of the obtained 3-amino-1-hydroxypentylidene-3,3-diphosphonic acid is 47%-65%.

[0035] Step (2): In a 1000ml flask with a stirring and temperature control device, add the above-mentioned 3-amino-1-hydroxypentylidene-3,3-diphosphonic acid 8g, methacrylic acid 3.5g, diethyl dimethacrylate 50 g of glycol ester, 50 g of divinylbenzene, 300 g of isoamyl alcohol, 400 g of ethyl acetate, 0.8 g of benzoyl peroxide, and 1.2 g of azobisisobutyronitrile were mixed uniformly and added to the above-mentioned flask. Adjust the rotation speed, raise the temperature to 65°C, keep it warm for 8 hours, then raise the temperature to 90°C, keep it warm for 6 hours...

Embodiment 3

[0037] Step (1): Add 21.10g (0.2mol) of 1-amino-2-ethylbutyric acid, 16.39g of phosphoric acid, 27.46g of phosphorus trichloride as raw material, 200ml of chlorobenzene as solvent, and heat at reflux at 100°C for 3h to obtain The mixture was cooled to room temperature, added water and reheated at reflux at 100°C for 2 hours. The yield of the obtained 3-amino-1-hydroxypentylidene-3,3-diphosphonic acid is 45%-67%.

[0038] Step (2): In a 1000ml flask with a stirring and temperature control device, add 8g of 3-amino-1-hydroxypentylidene-3,3-diphosphonic acid, 3.5g of methacrylic acid, diethylenedimethacrylate 40g of alcohol ester, 20g of divinylbenzene, 350g of toluene, 300g of ethyl acetate, 1.0g of benzoyl peroxide, and 1.0g of azobisisobutyronitrile were mixed evenly and added to the above-mentioned flask. Adjust the rotation speed, raise the temperature to 65°C, keep it warm for 8 hours, then raise the temperature to 90°C, keep it warm for 6 hours, then raise the temperature...

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Abstract

The invention discloses an adsorbing agent for removing chemical nickel. The adsorbing agent adopts 3-amino-1-hydroxyl pentylidene-3,3-diphosphonic acid as a functional monomer, and adopts amino groups and organic phosphonic acid groups contained in the functional monomer as ligating atoms to form a multi-teeth chelating center. The invention also provides a preparation method of the adsorbing agent for removing the chemical nickel. The adsorbing agent is applicable to treating waste water containing the chemical nickel, free metal ions and other complexing-state metal ions, is less in used amount and needs miniaturized equipment so as to be an economic and effective method for removing harmful metals.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to an adsorbent for removing chemical nickel and a preparation method thereof. Background technique [0002] With the development of industrialization, the composition of wastewater is becoming more and more complex. The common chemical nickel wastewater contains some complexing agent components (such as tartaric acid, citric acid, EDTA, etc.) that can form chemical nickel with nickel ions to form complexes. The chemical properties of complexes are stable, and ordinary heavy metal adsorbents are difficult to remove, which greatly increases the difficulty of wastewater treatment. Chemical nickel is one or more nickel complexes. Because some wastewater contains a large amount of complexing agents and nickel ions, they will complex with each other to form one or more soluble complexes. Difficult to remove when dissolved in wastewater. [0003] Existing chemical nickel treatment methods...

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
CPCB01J20/223B01J20/28019C02F1/285C02F2101/20
Inventor 蔡建国石洪雁习羽
Owner JIANGSU HELPER FUNCTIONAL MATERIALS