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A kind of composite modified montmorillonite chitosan cross-linked adsorbent and preparation method thereof

A soil-chitosan, composite modification technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of low adsorption capacity, poor adsorption effect, etc., and achieve high production efficiency, Good use effect, the effect of improving adsorption capacity

Active Publication Date: 2020-06-09
陕西聚泰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the deficiencies in the prior art, the object of the present invention is to provide a composite modified montmorillonite-chitosan cross-linked adsorbent and a preparation method thereof to solve the problem of using montmorillonite or chitosan alone or in the prior art. The problem of low adsorption capacity and poor adsorption effect on Cr(Ⅵ) and rhodamine B when used alone

Method used

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  • A kind of composite modified montmorillonite chitosan cross-linked adsorbent and preparation method thereof
  • A kind of composite modified montmorillonite chitosan cross-linked adsorbent and preparation method thereof
  • A kind of composite modified montmorillonite chitosan cross-linked adsorbent and preparation method thereof

Examples

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Embodiment 1

[0045] This embodiment provides a kind of composite modified montmorillonite chitosan cross-linking adsorbent, including the following raw materials: tetrabutyl titanate columnar agent, disodium ethylenediaminetetraacetic acid columnar agent and montmorillonite - chitosan aqueous suspension;

[0046] Tetrabutyl titanate columnizer comprises raw material tetrabutyl titanate;

[0047] Disodium EDTA columnizer includes disodium EDTA as raw material;

[0048] The montmorillonite-chitosan aqueous suspension comprises raw materials montmorillonite and chitosan.

[0049] The ratio of tetrabutyl titanate to disodium edetate is 1:0.5;

[0050] The mass ratio of tetrabutyl titanate, montmorillonite and chitosan is 2.55:1:1.

[0051] Tetrabutyl titanate columning agent, in parts by volume, is made of the following raw materials: 1 part of acetic acid solution, 4 parts of tetrabutyl titanate, 5 parts of absolute ethanol, 4 parts of nitric acid solution, hydrogen Sodium oxide solution ...

Embodiment 2

[0070] This embodiment provides a kind of composite modified montmorillonite chitosan cross-linking adsorbent, tetrabutyl titanate and disodium ethylenediamine tetraacetate in this composite modified montmorillonite chitosan cross-linking adsorbent The ratio of the amount of substances in the linked adsorbent is 1:1, and the specifications and dosage ratios of other medicines are the same as those in Example 1.

[0071] The preparation method of the composite modified montmorillonite-chitosan cross-linked adsorbent of this embodiment is the same as that of Embodiment 1.

[0072] This embodiment also provides the application of a composite modified montmorillonite chitosan cross-linked adsorbent as described above for the treatment of wastewater containing Cr(Ⅵ) and rhodamine B. In this wastewater treatment application, composite modified The corresponding dosage of montmorillonite-chitosan cross-linked adsorbent is:

[0073] Add 2g of composite modified montmorillonite chitos...

Embodiment 3

[0076] This embodiment provides a kind of composite modified montmorillonite chitosan cross-linking adsorbent, tetrabutyl titanate and disodium ethylenediamine tetraacetate in this composite modified montmorillonite chitosan cross-linking adsorbent The ratio of the amount of substances in the linked adsorbent is 1:2, and the specifications and dosage ratios of other medicines are the same as those in Example 1.

[0077] The preparation method of the composite modified montmorillonite-chitosan cross-linked adsorbent of this embodiment is the same as that of Embodiment 1.

[0078] This embodiment also provides the application of a composite modified montmorillonite chitosan cross-linked adsorbent as described above for the treatment of wastewater containing Cr(Ⅵ) and rhodamine B. In this wastewater treatment application, composite modified The corresponding dosage of montmorillonite-chitosan cross-linked adsorbent is:

[0079] Add 2g of composite modified montmorillonite chitos...

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Abstract

The invention provides a composite modified montmorillonite chitosan cross-linking adsorbent, a preparation method and an application. The present invention prepares tetrabutyl titanate columnizer with tetrabutyl titanate, glacial acetic acid, dehydrated ethanol, nitric acid, sodium hydroxide and water; Disodium ethylenediaminetetraacetic acid columning agent; prepare montmorillonite-chitosan aqueous suspension with montmorillonite, chitosan and water, and add the above two columnizing agents to montmorillonite-chitosan water suspension The composite modified montmorillonite-chitosan cross-linked adsorbent as mentioned above was prepared in the solution. The invention also provides a composite modified montmorillonite chitosan cross-linking adsorbent used for waste water treatment of waste water containing Cr(VI) and rhodamine B. The composite modified montmorillonite chitosan cross-linked adsorbent of the present invention can effectively remove Cr(Ⅵ) and rhodamine B in the waste water during the application process, so that the remaining amount is less, the adsorption capacity is higher, and the removal effect is better. Obvious and good removal efficiency.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, and relates to an adsorbent and its preparation, in particular to a composite modified montmorillonite-chitosan cross-linked adsorbent and a preparation method thereof. Background technique [0002] Under natural conditions, the chromium content in water is very small, but due to the increasing development of human industry, especially the development of chromium salt production, chemical production, leather production, paint and pigment production, etc., urban surface water and shallow groundwater have been affected. severe pollution. Chromium usually exists in the form of Cr(II) to Cr(VI), but only Cr(III) and Cr(VI) are relatively stable. Cr(Ⅵ) and rhodamine B are easily absorbed by the human body and cause cancer, which is extremely harmful to human beings. Cr(Ⅵ) can be immersed into the human body through the atmosphere, drinking water, food or contact, and the chromium that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/22C02F101/30
CPCB01J20/12B01J20/22B01J20/24C02F1/281C02F1/285C02F1/286C02F2101/22C02F2101/308
Inventor 赵彬侠吴笑江韩锐暄岳能张韬肖媛媛王子发张小里
Owner 陕西聚泰新材料科技有限公司
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