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Nickel ion adsorbent and preparation method thereof

An adsorbent, nickel ion technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of poor adsorption effect, high price, low adsorption capacity, etc. O element content, effect of increased ability

Inactive Publication Date: 2020-02-21
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the Chinese invention patent application: CN102350225A, a PVDF hybrid flat membrane that adsorbs heavy metal ions is disclosed. When the mass ratio of PVDF to attapulgite is 1:0.01, the prepared hybrid membrane has a high adsorption rate for nickel ions. to 20%, the adsorption effect is poor
[0004] In China's invention patent application: CN109107549A, a method for preparing a nanofiber membrane that absorbs heavy metal nickel ions in wastewater is disclosed. Graphene oxide, which is relatively expensive, is used in it, and the cost is relatively high

Method used

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  • Nickel ion adsorbent and preparation method thereof
  • Nickel ion adsorbent and preparation method thereof
  • Nickel ion adsorbent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Such as figure 1 Shown, the preparation method of the nickel ion adsorbent of the present embodiment comprises the following steps:

[0043] (1) Dry walnut green skin with a blast drying box, wherein the temperature of the blast drying box is 65° C. to obtain dry walnut skin.

[0044] (2) Grind and mix dry walnut skin and ammonium oxalate at a mass ratio of 3:7 to obtain a mixed sample, wherein the particle size of the mixed sample is less than 180 mesh.

[0045] (3) Carbonize and pyrolyze the mixed sample: put the mixed sample into a corundum boat, put the corundum boat into a tube furnace, and pass in an inert gas. The heating procedure for pyrolysis and carbonization is as follows: the initial temperature is 25°C, The heating rate is 4°C / min, the final temperature is 530°C, the holding time is 360min, and then the temperature is naturally lowered to obtain the initial adsorbent. (

[0046] (4) Initial adsorbent impregnation and activation: The specific process of ...

Embodiment 2

[0050] In this example, step (4) of initial adsorbent impregnation and activation in Example 1 is removed, and other implementations are the same as in Example 1.

[0051] The nickel ion adsorbent obtained in this example is named sample2.

Embodiment 3

[0053] In this embodiment, step (5) potassium permanganate modification in embodiment 1 is removed, and other embodiments are the same as embodiment 1.

[0054] The nickel ion adsorbent obtained in this example is named sample3.

[0055] analyse and compare:

[0056] 1. Nitrogen adsorption and desorption test

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Abstract

The invention discloses a nickel ion adsorbent and a preparation method thereof. The preparation method comprises the following steps: drying walnut green seedcase to obtain dry walnut peel; crushingand mixing the dried walnut peel and ammonium oxalate to obtain a mixed sample; carbonizing and pyrolyzing the mixed sample to obtain an initial adsorbent; successively dipping and reactivating the initial adsorbent to obtain an activated adsorbent; and modifying the activated adsorbent with a potassium permanganate solution to obtain the nickel ion adsorbent. The nickel ion adsorbent has a certain pore structure, and the surface of the nickel ion adsorbent is rich in O element and N element; and chemical functional groups containing the O element and functional groups containing the N elementadsorb nickel ions in wastewater through chemical bond action, the adsorption effect is excellent, and the maximum adsorption amount of the nickel ions can reach 106 mg / g, which is far higher than the adsorption amount of other nickel ion adsorbents.

Description

technical field [0001] The invention relates to an adsorbent for adsorbing nickel ions in waste water, in particular to a nickel ion adsorbent and a preparation method thereof. Background technique [0002] Nickel is the most common allergenic metal element, and nickel ions can cause human allergies. When in contact with the human body, nickel ions can penetrate into the skin through pores and sebaceous glands, causing skin allergies and inflammation, and its clinical manifestations are dermatitis and eczema. Once sensitization occurs, nickel allergy can often persist indefinitely. Nickel allergic dermatitis presents clinically as itchy, papular or papular-vesicular dermatitis with lichenification. And excessive nickel ions can cause cancer of body cells and tissues, so the treatment of wastewater containing nickel ions is very necessary. [0003] In the Chinese invention patent application: CN102350225A, a PVDF hybrid flat membrane that adsorbs heavy metal ions is disclo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01J20/32C10B53/02C02F1/28C02F101/20
CPCB01J20/20B01J20/3217B01J20/3225B01J2220/4825C02F1/283C02F2101/20C10B53/02Y02E50/10
Inventor 余谟鑫蒯乐施伟孟迪王傲王大松张晨王晓婷
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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