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Method for synthetizing nanoscale zero-valent iron by means of soapberry husk extraction solution

A technology of Sapindus husk and nano-zero-valent iron, which is applied in nanotechnology, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., to achieve good effect, low cost and high stability Effect

Inactive Publication Date: 2020-11-06
泉州市简能环保科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Before the present invention, there is no report on the application of Sapindus husk extract to synthesize nanometer zero-valent iron as reducing agent, dispersant and antioxidant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Grind the dried Sapindus husk to 20 mesh, add deionized water at a ratio of 1:4 to material, extract at a constant temperature of 80°C for 3 hours, repeat this process three times, filter out incompatible substances, and obtain Sapindus Fruit husk extract. Dissolve ferric chloride in ethanol aqueous solution mixed at a volume of 4:1 to form 0.05 mol / L Fe 3+ Solution, at room temperature, add in the three-necked flask and stir vigorously for 10min, slowly add the Sapindus husk extract solution dropwise, the volume ratio of the extract solution and the ferric chloride aqueous solution is 1: 0.3, keep stirring for 30 min, and mix the solution From red to light yellow and finally to black, nanometer zero-valent iron particles are selected from the solution by magnetic separation, and then fully washed with deoxygenated deionized water and absolute ethanol, and the particles obtained after centrifugation are freeze-dried under vacuum conditions. Keep airtight.

[0020] The...

Embodiment 2

[0023] Grind the dried Sapindus husk to 20 mesh, add deionized water at a ratio of 1:4 to material, extract at a constant temperature of 80°C for 3 hours, repeat this process three times, filter out incompatible substances, and obtain Sapindus Fruit husk extract. Dissolve ferrous sulfate in ethanol aqueous solution mixed with 4:1 volume to form 0.1 mol / L Fe 2+ Solution, under room temperature, add in the three-necked flask and stir vigorously for 10min, slowly add the Sapindus husk extract solution dropwise, the volume ratio of the extract solution and the ferric sulfate aqueous solution is 1: 0.5, keep stirring for 30 min, and the mixed solution is obtained by The red color turns light yellow and finally turns black. The nanometer zero-valent iron particles are selected from the solution by magnetic separation, and then fully washed with deoxygenated deionized water and absolute ethanol. The particles obtained after centrifugation are freeze-dried under vacuum conditions and ...

Embodiment 3

[0027] The dried Sapindus husk was crushed to 20 mesh, and deionized water was added at a ratio of 1:4 to liquid, and extracted at a constant temperature of 80°C for 3 h. This process was repeated three times, and the insoluble matter was filtered to obtain Sapindus husk extract. Dissolve ferric chloride and ferric nitrate in ethanol aqueous solution mixed at a volume of 4:1 to prepare 0.5 mol / L Fe 3+ Solution, under room temperature, was added to a three-necked flask and stirred vigorously for 10 min, and the Sapindus husk extract was added dropwise. The volume ratio of the extract to the ferric sulfate aqueous solution was 1:1, and the mixture was continuously stirred for 30 min, and mixed The solution turns from red to light yellow and finally to black. Nano-sized zero-valent iron particles are selected from the solution by magnetic separation, and then fully washed with deoxygenated deionized water and absolute ethanol, and the particles obtained after centrifugation are f...

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Abstract

The invention discloses a method for synthetizing nanoscale zero-valent iron by means of a soapberry husk extraction solution and an application of the nanoscale zero-valent iron, and belongs to the field of nano materials and wastewater treatment. The preparation method is characterized in that the nanoscale zero-valent iron is prepared with a soapberry husk extraction solution used as a reducingagent, a dispersing agent and an antioxidant at the room temperature, prepared nanoscale zero-valent iron particles have the good dispersity and stability, and when the nanoscale zero-valent iron isapplied to catalytic degradation of reactive dye methyl orange in wastewater, the removal rate within 10 min can be 97% and above. The method is simple in technology, economical and high in efficiency, resource utilization of soapberry husks is realized, and meanwhile, the synthetized nanoscale zero-valent iron has the very high activity and has the good dye degradation effect.

Description

technical field [0001] The invention belongs to the field of nanometer materials and wastewater treatment, and relates to a method for synthesizing nanometer zero-valent iron from biomass materials and an application thereof. Background technique [0002] With the rapid development of the dye chemical industry, more and more synthetic dyes are used in the production of textile, printing and dyeing, leather, food and daily chemical industries. my country is the world's largest producer of dyes. During the use of dyes, about 10-15% of them are discharged into the environment along with wastewater, and there are many kinds of dyes, which contain complex aromatic ring structures, high chemical stability, and biodegradability. Low; most dyes and their metabolic intermediates can cause cancer, teratogenicity and mutagenesis, and pose a great threat to the environment and human health. Therefore, it is imminent to treat dye wastewater efficiently. In recent years, the uniqueness...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00B01J23/745
CPCB01J23/745B22F9/24B82Y40/00
Inventor 王珊珊陈丽琴
Owner 泉州市简能环保科技有限公司
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