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Preparation method for chrysanthemum synthetic nanometer zero-valent iron suspension liquid

A nano-zero-valent iron and suspension technology, which is applied in the field of preparation of nano-zero-valent iron suspension synthesized by chrysanthemums, can solve problems such as flocculation and precipitation, and achieve the effects of stable suspension, low energy consumption, and easy operation

Inactive Publication Date: 2014-05-28
李广 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to extract from the stems and leaves of plants, and the stems and leaves of the plants need to be processed and crushed, and the prepared suspension is prone to flocculation and sedimentation after two to three weeks, and usually needs to be prepared and used on site

Method used

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  • Preparation method for chrysanthemum synthetic nanometer zero-valent iron suspension liquid

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Embodiment one: a kind of preparation method of chrysanthemum synthetic nano-zero valent iron suspension, the steps are as follows:

[0021] 1) Collect fresh chrysanthemums of the Chrysanthemum family and dry them at 70 degrees Celsius for 90 hours to obtain dried chrysanthemums. Immerse the dried chrysanthemums in water at 55 degrees Celsius. The ratio of dried chrysanthemums to water is 7 g / L, and then add a small amount of Methanol, the volume ratio of water and methanol is: 1: 0.005, soaks 50 minutes, obtains primary chrysanthemum solution;

[0022] 2) Then pass the chrysanthemum solution through a sieve of no less than 200 mesh for primary filtration to obtain the primary filtrate;

[0023] 3) Filtrate the primary filtrate through a vacuum negative pressure filter with a filter membrane of not less than 0.49 microns to obtain the chrysanthemum extract;

[0024] 4) Then add ferric chloride aqueous solution with a molar concentration of 0.40 mol / L to the chrysanthem...

Embodiment 2

[0025] Embodiment two: a kind of preparation method of chrysanthemum synthetic nano-zero valent iron suspension is characterized in that the steps are as follows:

[0026] 1) Collect fresh chrysanthemums of the Chrysanthemum family and dry them at 80 degrees Celsius for 75 hours to obtain dried chrysanthemums. Immerse the dried chrysanthemums in water at 85 degrees Celsius. The ratio of dried chrysanthemums to water is 15 grams per liter, and then add A small amount of ethanol, the volume ratio of water and ethanol is: 1: 0.01, soaks 100 minutes, obtains primary chrysanthemum solution;

[0027] 2) Then pass the chrysanthemum solution through a sieve of no less than 200 mesh for primary filtration to obtain the primary filtrate;

[0028] 3) Filtrate the primary filtrate through a vacuum negative pressure filter with a filter membrane of not less than 0.49 microns to obtain the chrysanthemum extract;

[0029] 4) Then add an aqueous ferric nitrate solution with a molar concentra...

Embodiment 3

[0031] Embodiment three: a kind of preparation method of chrysanthemum synthetic nano-zero valent iron suspension, is characterized in that the steps are as follows:

[0032] 1) Collect fresh chrysanthemums of the Chrysanthemum family and dry them at 85 degrees Celsius for 25 hours to obtain dried chrysanthemums. Immerse the dried chrysanthemums in water at 60 degrees Celsius. The ratio of dried chrysanthemums to water is 23 grams per liter, and then add A small amount of ethylene glycol, the volume ratio of water and ethylene glycol is: 1: 0.09, soak for 160 minutes, obtain primary chrysanthemum solution;

[0033] 2) Then pass the chrysanthemum solution through a sieve of no less than 200 mesh for primary filtration to obtain the primary filtrate;

[0034] 3) Filtrate the primary filtrate through a vacuum negative pressure filter with a filter membrane of not less than 0.49 microns to obtain the chrysanthemum extract;

[0035] 4) Then add ferric chloride aqueous solution wit...

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Abstract

The invention discloses a preparation method for chrysanthemum synthetic nanometer zero-valent iron suspension liquid. The preparation method comprises the following steps of (1) soaking dry chrysanthemum in water at the temperature of 40-90 DEG C for 10-180 minutes under the condition that the proportion of the chrysanthemum to the water is 5-25 grams to 1 liter, and adding alcohol in the mixture of the chrysanthemum and the water under the condition that the proportion of the water and the alcohol is 1: (0.001-0.1) so as to obtain primary chrysanthemum liquor; (2) primarily filtering the chrysanthemum liquor by using a sieve of which the meshes are not lower than 200; (3) performing vacuum filtering on the chrysanthemum liquor by a sieve with the meshes not smaller than 0.49 micrometer so as to obtain a chrysanthemum extract; and (4) adding ferric salt water liquor with the molar concentration of 0.30-0.60M in the chrysanthemum extract under the condition that the volume ratio is 1: (0.1-1), mixing the ferric salt water liquor and the chrysanthemum extract, and shaking up to obtain the zero-valent iron suspension liquid. The preparation method is economical and environment-friendly; the cost of a product is low; and the prepared suspension liquid is high in quality and high in stability.

Description

technical field [0001] The invention relates to a preparation method of a nano-zero-valent iron suspension, in particular to a preparation method of a chrysanthemum-synthesized nano-zero-valent iron suspension. Background technique [0002] Nano-scale zero-valent iron particles have a unique chemical structure and high surface activity, so that they have high-performance surface adsorption capacity and the function of a catalyst. Since there is a surface reaction between zero-valent iron and various pollutants, nano-sized particles can enhance its adsorption capacity for pollutants, which is conducive to the electron transfer between zero-valent iron and pollutants, thereby improving the zero-valent Reduction and removal efficiency of pollutants by iron. This product greatly improves the oxidant performance in sewage treatment. In recent years, the uniqueness and effectiveness of nano zero-valent iron particles in removing various pollutants have been widely recognized. A...

Claims

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Application Information

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IPC IPC(8): B22F9/24
Inventor 李广张海龙
Owner 李广
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