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Preparation method of zirconium-titanium pillared montmorillonite composite material for treating heavy metal wastewater

A technology for pillared montmorillonite and composite materials, which is applied in the field of preparation of titanium pillared montmorillonite composite materials, and can solve problems such as production reduction, injury, and biological function decline.

Inactive Publication Date: 2019-03-15
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Heavy metal wastewater enters rivers and lakes, pollutes the soil, and the metals in it can be absorbed by crops, affecting the growth of crops, resulting in reduced production or greater losses
Heavy metals can also enter the food chain through the roots of plants, and their side effects will be magnified and accumulated in the human body, leading to metabolic disorders, decreased biological functions, and great harm to the human body

Method used

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  • Preparation method of zirconium-titanium pillared montmorillonite composite material for treating heavy metal wastewater
  • Preparation method of zirconium-titanium pillared montmorillonite composite material for treating heavy metal wastewater
  • Preparation method of zirconium-titanium pillared montmorillonite composite material for treating heavy metal wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: a kind of preparation method for processing heavy metal wastewater zirconium-titanium pillared montmorillonite composite material, the method comprises the following steps:

[0026] (1) Weigh 20 g of calcium-based montmorillonite, stir and disperse in 500 ml of distilled water, add 2.5 g of sodium hexametaphosphate to it for sodiumization;

[0027] (2) Centrifuge the solution prepared in step (1) with a centrifuge speed of 3600r / min, and after centrifugation, take the supernatant and dry it to obtain sodium montmorillonite Na-mt;

[0028] (3) Take 2.2 ml of tetrabutyl titanate, add 4.4 ml of absolute ethanol, add 0.6 mol•L -1 0.3ml of hydrochloric acid solution, distilled water was added to make the volume to 100ml, mechanically stirred on a magnetic stirrer at 20°C for 0.5h, and aged at room temperature for 3h to obtain a titanium columnar agent;

[0029] (4) Weigh 6.44 g of zirconium oxychloride and add 200 ml of distilled water to form a solution, stir...

Embodiment 2

[0034] Embodiment 2: a kind of preparation method for treating heavy metal wastewater zirconium-titanium pillared montmorillonite composite material, the method comprises the following steps:

[0035] (1) Weigh 20 g of calcium-based montmorillonite, stir and disperse in 500 ml of distilled water, add 2.5 g of sodium hexametaphosphate to it for sodiumization;

[0036] (2) Centrifuge the solution prepared in step (1) with a centrifuge speed of 3600r / min, and after centrifugation, take the supernatant and dry it to obtain sodium montmorillonite Na-mt;

[0037] (3) Take 2.2 ml of tetrabutyl titanate, add 4.4 ml of absolute ethanol, add 0.6 mol•L -1 0.3ml of hydrochloric acid solution, distilled water was added to make the volume to 100ml, mechanically stirred on a magnetic stirrer at 30°C for 0.5h, and aged at room temperature for 6h to obtain a titanium columnar agent;

[0038] (4) Weigh 6.44 g of zirconium oxychloride and add 200 ml of distilled water to form a solution, mechan...

Embodiment 3

[0043] Embodiment 3: a kind of preparation method for processing heavy metal wastewater zirconium titanium pillared montmorillonite composite material, the method comprises the following steps:

[0044] (1) Weigh 20 g of calcium-based montmorillonite, stir and disperse in 500 ml of distilled water, add 2.5 g of sodium hexametaphosphate to it for sodiumization;

[0045](2) Centrifuge the solution prepared in step (1) with a centrifuge speed of 3600r / min, and after centrifugation, take the supernatant and dry it to obtain sodium montmorillonite Na-mt;

[0046] (3) Take 2.2 ml of tetrabutyl titanate, add 4.4 ml of absolute ethanol, add 0.6 mol•L -1 0.3ml of hydrochloric acid solution, add distilled water to make the volume to 100ml, mechanically stir on a magnetic stirrer at 25°C for 0.5h, and age at room temperature for 4.5h to obtain a titanium columnar agent;

[0047] (4) Weigh 6.44 g of zirconium oxychloride and add 200 ml of distilled water to form a solution, stir mechanic...

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Abstract

The invention discloses a preparation method of a zirconium-titanium pillared montmorillonite composite material for treating heavy metal wastewater. The preparation method comprises the following steps: preparing a sodium-based montmorillonite Na-mt, preparing a titanium pillaring agent, preparing a zirconium pillaring agent, mixing the titanium pillaring agent with the zirconium pillaring agentto prepare a Zr / Ti pillaring agent, slowly dropwise adding the Zr / Ti pillaring agent into a Na-mt suspension, stirring, centrifuging, filtering, drying, and calcinating at high temperature to obtain azirconium-titanium pillared montmorillonite composite material product. The zirconium-titanium pillared montmorillonite (Zr / Ti-mt) composite material is prepared by performing sodium treatment on calcium-based montmorillonite and modifying by zirconium ions (Zr<4+>) and titanium ions (Ti<4+>), and has a very good adsorption effect on heavy metal ions in the wastewater.

Description

technical field [0001] The invention relates to a method for preparing a zirconium-titanium pillared montmorillonite composite material for treating heavy metal wastewater. Background technique [0002] Heavy metal wastewater mainly comes from mining industry, machinery processing industry, non-ferrous metal smelting industry, petrochemical industry and electroplating industry, etc., containing Cu 2+ 、Cd 2+ , Pd 2+ and other heavy metal ions. Heavy metal wastewater enters rivers and lakes and pollutes the soil. The metals in it can be absorbed by crops, affecting the growth of crops, resulting in reduced production or greater losses. Heavy metals can also enter the food chain through the roots of plants, and their side effects will be magnified and accumulate in the human body, leading to metabolic disorders, decreased biological functions, and great harm to the human body. Montmorillonite (Montmorillonite) is a widely distributed and abundant clay mineral. It has a natu...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F101/20
CPCB01J20/12C02F1/281C02F2101/20
Inventor 庹必阳向海春
Owner GUIZHOU UNIV