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Hydrated titanium dioxide-persimmon tannin acrylic resin compound sorbent, preparation method thereof and application thereof

A technology for hydrating titanium dioxide and persimmon tannin acrylic acid, which can be used in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc. Simple process effect

Inactive Publication Date: 2012-09-19
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some trace elements are beneficial to the human body, most heavy metals are not needed for human life activities, and exceeding a certain concentration will cause great harm to the human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of preparation method of hydrated titanium dioxide-persimmon tannin acrylic resin composite adsorbent, it comprises the following steps:

[0029] 1) Surface treatment of hydrated titanium dioxide: according to the mass ratio of hydrated titanium dioxide: silane coupling agent of 1:0.15, select silane coupling agent and hydrated titanium dioxide for use, add silane coupling agent into water and stir to dissolve, then add hydrated titanium dioxide and stir to react 12h, centrifuge (3500r / min, 20min), wash, and vacuum dry at 80°C to obtain hydrated titanium dioxide modified by silane coupling agent;

[0030] 2) Material preparation: select n-hexane, anionic surfactant, and acrylic acid according to the mass ratio of n-hexane: anionic surfactant: acrylic acid is 100:18:13, and use the hydrated titanium dioxide modified by the above-mentioned silane coupling agent: persimmon mono Ning solution: ammonium persulfate: N-N methylenebisacrylamide: acrylic acid with a mass ...

Embodiment 2

[0037] A kind of preparation method of hydrated titanium dioxide-persimmon tannin acrylic resin composite adsorbent, it comprises the following steps:

[0038] 1) Surface treatment of hydrated titanium dioxide: according to the mass ratio of hydrated titanium dioxide: silane coupling agent of 1:0.3, select silane coupling agent and hydrated titanium dioxide for later use, add silane coupling agent into water and stir to dissolve, then add hydrated titanium dioxide and stir to react 12h, centrifuge (3500r / min, 20min), wash, and vacuum dry at 80°C to obtain hydrated titanium dioxide modified by silane coupling agent;

[0039] 2) Preparation of materials: select n-hexane, anionic surfactant, and acrylic acid according to the mass ratio of n-hexane: anionic surfactant: acrylic acid of 150:27:30, and use the hydrated titanium dioxide modified by the above-mentioned silane coupling agent: persimmon mono Ning solution: ammonium persulfate: N-N methylenebisacrylamide: acrylic acid wit...

Embodiment 3

[0045] A kind of preparation method of hydrated titanium dioxide-persimmon tannin acrylic resin composite adsorbent, it comprises the following steps:

[0046] 1) Surface treatment of hydrated titanium dioxide: according to the mass ratio of hydrated titanium dioxide: silane coupling agent of 1:2.4, select silane coupling agent and hydrated titanium dioxide for use, add silane coupling agent into water and stir to dissolve, then add hydrated titanium dioxide and stir to react 12h, centrifuge (3500r / min, 20min), wash, and vacuum dry at 80°C to obtain hydrated titanium dioxide modified by silane coupling agent;

[0047] 2) Material preparation: select n-hexane, anionic surfactant, and acrylic acid according to the mass ratio of n-hexane: anionic surfactant: acrylic acid of 200:36:50, and use the hydrated titanium dioxide modified by the above-mentioned silane coupling agent: persimmon mono Ning solution: ammonium persulfate: N-N methylenebisacrylamide: acrylic acid with a mass r...

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Abstract

The invention provides a hydrated titanium dioxide-persimmon tannin acrylic resin compound sorbent, a preparation method thereof and the application thereof, wherein, the preparation method of the compound sorbent comprises the steps as follows: silane coupling agents are added in water and is stirred for dissolution, then hydrated titanium dioxide is added and stirred, reaction is performed for 12 hours, and then centrifugation, washing and drying are carried out so as to obtain the modified hydrated titanium dioxide; mixed solution containing sodium acrylate is prepared by mixing N,N'-methylene-bisacrylamide, ammonium persulfate and persimmon tannin solution; n-hexane, anionic surface active agents and the hydrated titanium dioxide that is modified through the silane coupling agents are added in a reaction kettle, reaction is performed for 10 to 20 minutes under the conditions that nitrogen is pumped in and stirring is carried out, then mixed solution is added, stirring is performed, the temperature increases to 75 DEG C, and reaction is performed for 1.5 hours under the stirring condition; and n-hexane is removed through filtration, and vacuum drying is carried out, so as to obtain the hydrated titanium dioxide-persimmon tannin acrylic resin compound sorbent. The compound sorbent with low cost has the compound inorganic-organic advantages, achieves a good pb2 plus adsorption effect, and achieves simple synthesis technological process and high polymerization speed, and is easy to dry.

Description

technical field [0001] The invention relates to a composite material for treating lead-containing wastewater, in particular to a hydrated titanium dioxide-persimmon tannin acrylic resin composite adsorbent, a preparation method and application thereof. Background technique [0002] Heavy metal ions are highly toxic, refractory and bioaccumulative, and can threaten human health through the cycle of the food chain. Although some trace elements are beneficial to the human body, most of the heavy metals are not required by human life activities, and exceeding a certain concentration will cause great harm to the human body. The national standard GB8978-88 "Integrated Wastewater Discharge Standard" clearly stipulates the maximum allowable discharge concentration of heavy metals. The toxicity and harm of lead as a strong pollutant have long been known to the public, therefore, the treatment of lead-containing wastewater has attracted widespread attention. [0003] Due to the refr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/62
Inventor 王勇高明曹瑞瑞程顺林万涛
Owner WUHAN UNIV OF TECH
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