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Green synthesis method for nanometer zero-valent iron by utilizing grape seeds and application thereof

A nano-zero-valent iron, green synthesis technology, applied in nanotechnology, nanotechnology, nanotechnology and other directions for materials and surface science, to achieve the effect of good effect, reduce environmental pollution, and good degradation effect

Active Publication Date: 2014-12-03
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Before the present invention, do not find the report that uses grape seed extract to synthesize nanometer zero valent iron as dispersant and antioxidant

Method used

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  • Green synthesis method for nanometer zero-valent iron by utilizing grape seeds and application thereof
  • Green synthesis method for nanometer zero-valent iron by utilizing grape seeds and application thereof
  • Green synthesis method for nanometer zero-valent iron by utilizing grape seeds and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) After washing the grape seeds, dry them at 105°C for 24 hours.

[0045] (2) Grinding the dried grape seeds and sieving to 300-600 μm to obtain grape seed powder.

[0046] (3) The grape seed solution was prepared according to the standard of adding 3 g of grape seed powder per 100 mL of distilled water.

[0047] (4) The grape seed solution was subjected to ultrasonication for 60 min at 20° C. under the condition of ultrasonic power of 250 W, then vacuum filtered, and then filtered through a 0.45 μm filter membrane to obtain a grape seed extract.

[0048] (5) At room temperature, mix the grape seed extract with 0.01mol / L ferrous chloride solution and stir evenly to obtain a mixed solution of ferrous chloride-grape seed extract, wherein the ferrous chloride-grape seed extract The mass fraction of grape seeds in the mixed solution is 0.1wt%.

[0049] (6) According to Fe 2+ :BH 4 The molar ratio is 1:2, the sodium borohydride solution is slowly added to the mixed sol...

Embodiment 2

[0054] (1) After washing the grape seeds, dry them at 105°C for 24 hours.

[0055] (2) Grinding the dried grape seeds and sieving to 300-600 μm to obtain grape seed powder.

[0056] (3) The grape seed solution was prepared according to the standard of adding 3 g of grape seed powder per 100 mL of distilled water.

[0057] (4) The grape seed solution was ultrasonicated for 50 min under the condition of 30° C. and ultrasonic power of 200 W, then filtered by vacuum suction, and then filtered through a 0.45 μm filter membrane to obtain a grape seed extract.

[0058] (5) Under room temperature conditions, the grape seed extract is mixed with 0.03mol / L ferric sulfate solution, and stirred evenly to obtain a mixed solution of ferric sulfate-grape seed extract, wherein the amount of grape seed in the ferric sulfate-grape seed extract mixed solution is The mass fraction is 0.2wt%.

[0059] (6) According to Fe 3+ :BH 4 - Under the condition that the molar ratio is 1:2.5, the sodium...

Embodiment 3

[0064] (1) After washing the grape seeds, dry them at 105°C for 24 hours.

[0065] (2) Grinding the dried grape seeds and sieving to 300-600 μm to obtain grape seed powder.

[0066] (3) The grape seed solution was prepared according to the standard of adding 3 g of grape seed powder per 100 mL of distilled water.

[0067] (4) The grape seed solution was subjected to ultrasonication for 40 min at 40° C. under the condition of ultrasonic power of 150 W, then vacuum filtered, and then filtered through a 0.45 μm filter membrane to obtain a grape seed extract.

[0068] (5) At room temperature, the grape seed extract and Fe 2+ Concentration is the ferrous chloride of 0.05mol / L and the mixed solution of ferrous sulfate is mixed, stir, obtain ferrous chloride, ferrous sulfate-grape seed extract mixed solution, wherein ferrous chloride, ferrous sulfate- The mass fraction of grape seeds in the mixed solution of grape seed extract is 0.3wt%.

[0069] (6) According to Fe 2+ :BH 4 - ...

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Abstract

The invention relates to a green synthesis method for nanometer zero-valent iron by utilizing grape seeds and an application, and belongs to the field of nanometer material and wastewater treatment. The preparation method is characterized in that nanometer zero-valent iron particles are prepared by taking waste grape seed extracting solution as dispersing agent and antioxidant under the condition of room temperature, and the nanometer zero-valent iron particles prepared through the method has good dispersibility and stability. The nanometer zero-valent iron particles prepared by the method are used for catalytically degrading reactive dye in wastewater, under the condition that the pH of the dye wastewater is equal to 2 to 10, more than 98% of azo-dye reactive brilliant red K-2G is degraded in 9min, more than 95% of anthraquinone dye reactive brilliant blue KN-R is degraded in 30min, and the environmental adaptability is high, and the degrading efficiency is high. The method is simple in technology, economic and efficient, resource utilization of grape seeds is realized, the synthetic nanometer zero-valent iron has extremely high activity, and the method has wide application prospect.

Description

technical field [0001] The invention belongs to the field of nanomaterials and wastewater treatment, and relates to a method for green synthesis of nano-zero-valent iron by using by-products in the wine industry and its application, in particular to a method for green-synthesis of nano-zero-valent iron by using grape seeds and its role in catalytic degradation of wastewater Application of dyes. Background technique [0002] my country is a big country in the dye industry in the world, with an annual output of more than one million tons of dyes, ranking first in the world. According to statistics, in the process of production and treatment, about 10-15% of dyes are discharged into the environment in the form of waste water. According to statistics, the application of azo dyes in the dye industry accounts for 60-70% of the proportion, and there are more than 400 varieties of anthraquinone dyes, which also occupy a very important position in the application of the dye industry...

Claims

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Application Information

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IPC IPC(8): B22F9/24C02F1/72B82Y40/00B82Y30/00
Inventor 高景峰李洪禹司春英
Owner BEIJING UNIV OF TECH
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