A kind of porous heavy metal ion adsorbent and preparation method thereof

A technology of heavy metal ions and adsorbents, applied in the directions of alkali metal compounds, chemical instruments and methods, adsorbed water/sewage treatment, etc., can solve the problems of difficult to uniformly disperse polymer materials, poor heavy metal adsorption effect, and low elution efficiency. , to achieve the effect of great potential for industrial application, easy desorption and regeneration, and rapid adsorption

Active Publication Date: 2019-05-17
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the doping of porous raw materials (such as zeolite, attapulgite, nano-metal oxides, etc.) can effectively increase the specific surface area of ​​the material, but some of the raw materials themselves have poor adsorption effect on heavy metals, and some have high prices; in addition, water-soluble Porogen pore formation is to soak the material mixed with porogen in water, and form a porous structure in the material by eluting the porogen, but it takes a long time and the elution efficiency is not high; while inorganic metal oxides can be dissolved in Acidic or alkaline solutions, mixing inorganic metal oxides with polymer materials, and then using acidic or alkaline solutions to elute inorganic metal oxides can form porous structures, but inorganic metal oxides are not easy to uniformly disperse in polymer materials due to agglomeration middle

Method used

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  • A kind of porous heavy metal ion adsorbent and preparation method thereof
  • A kind of porous heavy metal ion adsorbent and preparation method thereof
  • A kind of porous heavy metal ion adsorbent and preparation method thereof

Examples

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Embodiment 1

[0034] A kind of preparation method of porous heavy metal ion adsorbent, it comprises the steps:

[0035] (1) Add 2 parts of glacial acetic acid and 24 parts of absolute ethanol to 10 parts of butyl titanate in sequence, and stir and mix evenly to obtain solution A;

[0036] (2) Add 1 part of deionized water to 7.8 parts of absolute ethanol, add two drops of concentrated hydrochloric acid dropwise, and mix uniformly to obtain solution B;

[0037] (3) Slowly stir the solution A prepared in step (1) and pour it into the solution B prepared in step (2), and continue stirring at room temperature for 15 minutes, then carry out standing treatment for 2 hours to obtain a titanium dioxide sol;

[0038] (4) Add 1.95 parts of sodium hydroxide to 7.5 parts of deionized water and stir and mix evenly to obtain a sodium hydroxide solution, then stir and drop 5 parts of acrylic acid into the prepared sodium hydroxide solution under ice-water bath conditions , then add 0.02 parts of N,N'-met...

Embodiment 2

[0051] A kind of preparation method of porous heavy metal ion adsorbent, it comprises the steps:

[0052] (1) Add 2 parts of glacial acetic acid and 24 parts of absolute ethanol to 10 parts of butyl titanate in sequence, and stir and mix evenly to obtain solution A;

[0053] (2) Add 0.1 part of deionized water to 7.8 parts of absolute ethanol, add two drops of concentrated hydrochloric acid dropwise, and mix uniformly to obtain solution B;

[0054] (3) Slowly stir the solution A prepared in step (1) and pour it into the solution B prepared in step (2), and continue stirring at room temperature for 15 minutes, then carry out standing treatment for 2 hours to obtain a titanium dioxide sol;

[0055] (4) Add 1.56 parts of sodium hydroxide to 7.5 parts of deionized water and stir and mix evenly to obtain a sodium hydroxide solution, then stir and drop 4 parts of acrylic acid into the prepared sodium hydroxide solution under ice-water bath conditions , then add 0.004 parts of N,N'-...

Embodiment 3

[0060] A kind of preparation method of porous heavy metal ion adsorbent, it comprises the steps:

[0061] (1) Add 5 parts of glacial acetic acid and 24 parts of absolute ethanol to 10 parts of butyl titanate in sequence, and stir and mix evenly to obtain solution A;

[0062] (2) Add 0.9 parts of deionized water to 7.8 parts of absolute ethanol, add two drops of concentrated hydrochloric acid dropwise, and stir and mix evenly to obtain solution B;

[0063] (3) Slowly stir the solution A prepared in step (1) and pour it into the solution B prepared in step (2), and continue stirring at room temperature for 15 minutes, then carry out standing treatment for 2 hours to obtain a titanium dioxide sol;

[0064] (4) Add 2.34 parts of sodium hydroxide to 10 parts of deionized water and stir and mix uniformly to obtain a sodium hydroxide solution, then stir and drop 6 parts of acrylic acid into the prepared sodium hydroxide solution under ice-water bath conditions , then add 0.08 parts ...

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Abstract

The invention discloses a porous heavy metal ion adsorbent and a preparation method thereof. The method comprises the following steps: uniformly mixing a titanium dioxide solution with acrylic acid; preparing a stable uniform titanium dioxide / polyacrylic acid hybridized gel in the manner of cross-linking polymerization; and using an acid solution for eluting titanium dioxide, thereby acquiring the porous heavy metal ion adsorbent. The porous heavy metal ion adsorbent disclosed by the invention has a developed porous structure and uniform pore distribution, is capable of quickly adsorbing heavy metal ions and is ultrahigh in adsorbing capacity; the adsorbing capacity is free from obvious change after the repeated recycling; the preparation process is simple and efficient; the performance is excellent; and the porous heavy metal ion adsorbent is widely applied to the treatment for the wastewater and effluent containing heavy metal ions, has high industrial application potential and is wide in development prospect.

Description

technical field [0001] The invention relates to the technical field of adsorption functional materials and environmental pollution control, in particular to a porous heavy metal ion adsorbent and a preparation method thereof. Background technique [0002] In recent years, with the increasing pollution of heavy metal wastewater, heavy metal ion adsorbents have become a research hotspot. Acrylic acid is an important raw material for organic synthesis. Acrylic acid molecules contain a large number of carboxylic acid groups, which have strong interactions with metal ions and can be used to prepare heavy metal ion adsorbents; and porous heavy metal ion adsorbents have a pore structure, not only Improve the adsorption rate, but also provide convenience for the desorption of heavy metal ions. At present, the commonly used methods for preparing porous structures include: doping of porous materials, pore formation by water-soluble porogens, and inorganic metal oxides. Among them, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/06B01J20/261B01J20/28047B01J2220/46B01J2220/4806B01J2220/4812C02F1/281C02F1/285C02F2101/20
Inventor 张卫英袁喆李晓陈玉宝陈旻阳
Owner FUZHOU UNIV
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