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Composite modified montmorillonite adsorbent as well as preparation method and application thereof

A technology of composite modification and montmorillonite, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, can solve the problems of poor adsorption effect and low adsorption capacity, achieve high production efficiency, and improve adsorption Ability, the effect that is conducive to large-scale production

Pending Publication Date: 2020-11-03
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

[0005] For the deficiencies in the prior art, the object of the present invention is to provide a composite modified montmorillonite adsorbent, preparation method and application thereof, to solve the problem of single modified montmorillonite in the prior art. The adsorption capacity of Cr(Ⅵ) is low and the adsorption effect is poor

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  • Composite modified montmorillonite adsorbent as well as preparation method and application thereof
  • Composite modified montmorillonite adsorbent as well as preparation method and application thereof
  • Composite modified montmorillonite adsorbent as well as preparation method and application thereof

Examples

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Embodiment 1

[0039] A composite modified montmorillonite adsorbent, the raw materials of the composite modified montmorillonite adsorbent include cetyltrimethylammonium bromide columnizer, dextrin columnizer and montmorillonite suspension;

[0040] The raw material of the cetyltrimethylammonium bromide columnizer comprises cetyltrimethylammonium bromide; the raw material of the dextrin columnizer comprises dextrin; the montmorillonite suspension Raw materials include montmorillonite.

[0041] The mass ratio of cetyltrimethylammonium bromide to dextrin is 3:2.

[0042] The cetyltrimethylammonium bromide columnizing agent is prepared in parts by weight from the following raw materials: 3 parts of cetyltrimethylammonium bromide and 20 parts of distilled water.

[0043] The dextrin columnizer consists of the following raw materials in parts by weight: 2 parts of dextrin and 20 parts of sulfuric acid solution; wherein: the sulfuric acid solution is an aqueous solution of sulfuric acid with a c...

Embodiment 2

[0056] The present embodiment provides a kind of composite modified montmorillonite adsorbent, the mass ratio of cetyltrimethylammonium bromide and dextrin in this composite modified montmorillonite adsorbent is 2 in the present embodiment: 1. The specifications and dosage ratios of other medicines are the same as in Example 1.

[0057] The preparation method of the composite modified montmorillonite adsorbent of this embodiment is the same as that of Embodiment 1.

[0058] This example also provides an application of the above-mentioned composite modified montmorillonite adsorbent for treating Cr(Ⅵ)-containing wastewater, and the corresponding dosage of the composite modified montmorillonite adsorbent in the wastewater treatment application is:

[0059] Add 0.2g of composite modified montmorillonite adsorbent per 100mL of wastewater;

[0060] The Cr(VI) concentration in the waste water is 20 mg / L.

Embodiment 3

[0062] The present embodiment provides a kind of composite modified montmorillonite adsorbent, the mass ratio of cetyltrimethylammonium bromide and dextrin in this composite modified montmorillonite adsorbent is 1 in the present embodiment: 1. The specifications and dosage ratios of other medicines are the same as in Example 1.

[0063] The preparation method of the composite modified montmorillonite adsorbent of this embodiment is the same as that of Embodiment 1.

[0064] This example also provides an application of the above-mentioned composite modified montmorillonite adsorbent for treating Cr(Ⅵ)-containing wastewater, and the corresponding dosage of the composite modified montmorillonite adsorbent in the wastewater treatment application is:

[0065] Add 0.3g of composite modified montmorillonite adsorbent per 100mL of wastewater;

[0066] The Cr(VI) concentration in the waste water is 20 mg / L.

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Abstract

The invention discloses a composite modified montmorillonite adsorbent as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing a cetyltrimethyl ammonium bromide column agent from cetyl trimethyl ammonium bromide and water; preparing a dextrin column agent from dextrin, a sulfuric acid solution and water; mixing montmorillonite and water into montmorillonite suspension liquid, and adding the two column agents into the montmorillonite suspension liquid to prepare the composite modified montmorillonite adsorbent. The invention alsoprovides application of the composite modified montmorillonite adsorbent in Cr (VI)-containing wastewater treatment. In the application process of the composite modified montmorillonite adsorbent, the Cr (VI) in wastewater can be effectively removed; compared with a single modified montmorillonite adsorbent, the composite modified montmorillonite adsorbent is better in adsorption effect and higher in adsorption capacity.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, and relates to an adsorbent and a preparation method thereof, in particular to a composite modified montmorillonite adsorbent, a preparation method and an application thereof. Background technique [0002] The chromium content in water is very low under natural conditions, but with the development of industrialization and urbanization, especially the development of metallurgical technology, electroplating, battery manufacturing, and leather industry, urban surface water, shallow groundwater, and soil are all chromium. heavily contaminated with chromium. Chromium usually exists in the form of Cr(II) to Cr(VI), and chromium exists mainly in trivalent and hexavalent in nature. Among them, Cr(Ⅲ) is a trace element needed by the human body, and its toxicity is very small; while the toxicity of Cr(Ⅵ) is about 1000 times that of Cr(Ⅲ), and Cr(Ⅵ) is easily absorbed by the human body, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24C02F1/28B01J20/30C02F101/22
CPCB01J20/12B01J20/22B01J20/24C02F1/281C02F1/285C02F1/286C02F2101/22
Inventor 赵彬侠张旺孙丽任海月浑天铖张小里刘林学
Owner 陕西聚泰新材料科技有限公司
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