Preparation method of La-Fe/CTMAB (cetyltrimethylammonium bromide) composite modified bentonite adsorbing material

A technology of composite modification and adsorption materials, which is applied in chemical instruments and methods, adsorption water/sewage treatment, water/sewage treatment, etc., can solve the problems of poor adsorption performance of organic pollutants, and achieve high stability and increased interlayer spacing. The effect of large and large adsorption capacity

Active Publication Date: 2017-02-08
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a preparation method of La-Fe / CTMAB composite modified bentonite adsorption material, which solves the problem of poor adsorption performance of bentonite raw soil to organic pollutants in the prior art

Method used

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  • Preparation method of La-Fe/CTMAB (cetyltrimethylammonium bromide) composite modified bentonite adsorbing material
  • Preparation method of La-Fe/CTMAB (cetyltrimethylammonium bromide) composite modified bentonite adsorbing material
  • Preparation method of La-Fe/CTMAB (cetyltrimethylammonium bromide) composite modified bentonite adsorbing material

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Embodiment 1

[0052] A kind of preparation method of La-Fe / CTMAB composite modified bentonite adsorption material of the present invention, specifically implement according to the following steps:

[0053] Step 1, preparing polyhydroxyferric iron solution, denoted as solution a, specifically:

[0054] Step (1.1), configure the FeCl of 0.1mol / L 3 solution and 1mol / L NaOH solution;

[0055] Step (1.2), the 1mol / L NaOH solution that is prepared in the step (1.1) is added the FeCl of 0.1mol / L 3 Solution, stirring while adding dropwise, according to the ratio that the molar ratio of OH / Fe is 2.0, prepare polyhydroxyferric solution;

[0056] Step (1.3), stirring and aging the polyhydroxyferric solution obtained in step (1.2) to obtain a brown transparent polyhydroxyferric solution a, wherein, when stirring the polyhydroxyferric solution a, the water temperature is controlled to be 40° C., and the stirring time is 2h, the aging time is 24h;

[0057] Step 2, prepare La(NO 3 ) 3 solution, deno...

Embodiment 2

[0066] A kind of preparation method of La-Fe / CTMAB composite modified bentonite adsorption material of the present invention, specifically implement according to the following steps:

[0067] Step 1, preparing polyhydroxyferric iron solution, denoted as solution a, specifically:

[0068] Step (1.1), configure the FeCl of 0.1mol / L 3 solution and 1mol / L NaOH solution;

[0069] Step (1.2), the 1mol / L NaOH solution that is prepared in the step (1.1) is added the FeCl of 0.1mol / L 3 Solution, stirring while adding dropwise, according to the ratio that the molar ratio of OH / Fe is 2.0, prepare polyhydroxyferric solution;

[0070] Step (1.3), stirring and aging the polyhydroxyferric solution obtained in step (1.2) to obtain a brown transparent polyhydroxyferric solution a, wherein, when stirring the polyhydroxyferric solution a, the water temperature is controlled to be 80° C., and the stirring time is 2h, the aging time is 24h;

[0071] Step 2, prepare La(NO 3 ) 3 solution, deno...

Embodiment 3

[0080] A kind of preparation method of La-Fe / CTMAB composite modified bentonite adsorption material of the present invention, specifically implement according to the following steps:

[0081] Step 1, preparing polyhydroxyferric iron solution, denoted as solution a, specifically:

[0082] Step (1.1), configure the FeCl of 0.1mol / L 3 solution and 1mol / L NaOH solution;

[0083] Step (1.2), the 1mol / L NaOH solution that is prepared in the step (1.1) is added the FeCl of 0.1mol / L 3 Solution, stirring while adding dropwise, according to the ratio that the molar ratio of OH / Fe is 2.0, prepare polyhydroxyferric solution;

[0084] Step (1.3), stirring and aging the polyhydroxyiron solution obtained in step (1.2), obtain brown transparent polyhydroxyiron solution a, wherein, when stirring the polyhydroxyiron solution a, control the water temperature to be 60° C., and the stirring time is 2h, the aging time is 24h;

[0085] Step 2, prepare La(NO 3 ) 3 solution, denoted as solution ...

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Abstract

The invention discloses a preparation method of a La-Fe/CTMAB (cetyltrimethylammonium bromide) composite modified bentonite adsorbing material. The preparation method comprises the following steps: preparing a polycarbonyl iron solution and a La(NO3)3 solution, adding the polycarbonyl iron solution and La(NO3)3 solution into a bentonite raw soil suspension to obtain a La-Fe inorganic modified bentonite suspension, carrying out vacuum filtration, washing, drying and grinding to obtain La-Fe inorganic modified bentonite, adding the La-Fe inorganic modified bentonite into a CTMAB solution, treating in a thermostatic water bath, stirring and aging to obtain a La-Fe/CTMAB inorganic-organic composite modified bentonite suspension, and carrying out vacuum filtration, washing, drying and grinding to obtain the La-Fe/CTMAB composite modified bentonite adsorbing material. The method solves the problem of poor adsorbability of bentonite raw soil for organic pollutants in the prior art.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a preparation method of a La-Fe / CTMAB composite modified bentonite adsorption material. Background technique [0002] As a clay mineral, bentonite has abundant reserves in my country. It has become a popular adsorption material in recent years because of its large specific surface area, cation exchange and adsorption properties. As an adsorption material, bentonite is non-toxic and stable. It has the characteristics of high reliability and low price, so it has great research and application value. Bentonite is a 2:1 layered silicate mineral with montmorillonite as the main component. Due to the unique electronegativity of bentonite's own structure, there are some positively charged Na between the crystal layers. + , Mg 2+ 、K + These metal ions usually exist in the form of water and ions, so the interlayer structure of bentonite and the silicon-oxygen st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/12C02F1/28C02F101/22C02F101/34
CPCB01J20/0207B01J20/0225B01J20/12C02F1/281C02F2101/345C02F2101/22
Inventor 余晓皎赵园园李举张健寇松张杰赵洁周文娜
Owner XIAN UNIV OF TECH
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