Method for preparing novel carbon material at low temperature for processing dye waste water

A technology of dye wastewater and carbon materials, which is applied in chemical instruments and methods, textile industry wastewater treatment, adsorption water/sewage treatment, etc., can solve the problems of unfavorable industrial production, high operation requirements, complex process, etc., and achieve strong adsorption capacity, The effect of simple operation and simple process requirements

Inactive Publication Date: 2013-05-15
ZHEJIANG NORMAL UNIVERSITY
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  • Description
  • Claims
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Problems solved by technology

[0007] To sum up, in the existing methods of preparing carbon-containing functional nanomaterials from carbohydrates, the reaction temperature needs to be carried out under hydrothermal conditions above 160°C. Due to the complex process and high requirements for operation, it is not conducive to industrial production

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  • Method for preparing novel carbon material at low temperature for processing dye waste water
  • Method for preparing novel carbon material at low temperature for processing dye waste water
  • Method for preparing novel carbon material at low temperature for processing dye waste water

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preparation example Construction

[0025] The low-temperature preparation method of the novel carbon material used for treating dye wastewater provided by the invention, its steps include:

[0026] (1) Prepare a sugar-containing aqueous solution. The method for preparing a sugar-containing aqueous solution is: add 12.5-312.5 g of sugar compounds, 7-100 g of amine compounds, 2-48 g of polyvinylpyrrolidone, and tellurous acid to each L of aqueous solution. Sodium 1.0-6.6g;

[0027] (2) Seal the reaction vessel that has been put into the prepared saccharide compound aqueous solution, heat the sealed reaction vessel to 120-140°C, react for 10-24 hours, cool naturally, and centrifuge to obtain the product, which is used separately Washing with distilled water and absolute ethanol three times, and drying to obtain carbon fibers with a diameter of 10nm to 100nm;

[0028] (3) Use the dye compound to prepare an aqueous solution of the dye compound with a concentration of 0.5-10 mg / L;

[0029] (4) Mix the prepared carb...

Embodiment 1

[0036] A low-temperature preparation method of a novel carbon material for treating dye wastewater, the steps of which are:

[0037] (1) Disperse 0.8 g of starch, 1.4 g of hexamethylenetetramine, 0.1 g of polyvinylpyrrolidone and 0.1 g of sodium tellurite in 24 ml of water, stir and dissolve to form a mixed aqueous solution containing sugar compounds;

[0038] (2) Put the prepared saccharide compound aqueous solution into a 30 ml reactor whose inner liner is made of polytetrafluoroethylene and whose outer shell is made of steel;

[0039] (3) After sealing the reactor, place it in an oven at 140 °C for 20 hours, cool naturally, and centrifuge to obtain the product, wash the product three times with distilled water and absolute ethanol, and dry to obtain carbon nanofibers;

[0040] (4) Take 20 mg of the above-mentioned carbon nanofibers, disperse them in 5 ml of methylene blue solution with a concentration of 6 mg / L, leave them at room temperature for 50 minutes, and remove 90% ...

Embodiment 2

[0048] A low-temperature preparation method of a novel carbon material for treating dye wastewater, the steps of which are:

[0049] (1) Disperse 1.0 g of β-cyclodextrin, 2.0 g of trimethylamine oxide, 0.2 g of polyvinylpyrrolidone and 0.09 g of sodium tellurite in 24 ml of water, stir and dissolve to form a mixed aqueous solution containing sugar compounds;

[0050] (2) Put the prepared saccharide compound aqueous solution into a 30 ml reactor whose inner liner is made of polytetrafluoroethylene and whose outer shell is made of steel;

[0051] (3) After sealing the reaction kettle, place it in an oven at 120 °C for 12 hours, cool naturally, and centrifuge to obtain the product, wash the product three times with distilled water and absolute ethanol, and dry to obtain carbon nanofibers;

[0052] (4) Take 20 mg of the above-mentioned carbon nanofibers, disperse them in 10 ml of methylene blue solution with a concentration of 10 mg / L, leave them at room temperature for 2 hours, a...

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Abstract

The invention relates to a method for preparing novel carbon material at low temperature for processing dye waste water, comprising the following steps: firstly preparing water liquor with sugar, which is to add 12.5-312.5 g of carbohydrate, 7-100 g of amine compounds, 2-48 g of polyvinylpyrrolidone and 1.0-6.6 g of sodium tellurite to each L of water liquid; sealing the reaction container in which the prepared carbohydrate water liquid; heating the reaction container to 120-140 DEG C, and reacting for 10-24 hours; naturally cooling, and centrifuging to separate and obtain the product; washing the product with distilled water and anhydrous alcohol for three times; and drying to obtain the carbon nanometer fiber, wherein the carbon nanometer fiber is the novel carbon material for processing the dye waste water. The invention adopts the carbohydrates of sugars as the raw material, and the reaction is implemented at low temperature (120-140 DEG C), so the carbonization of the carbohydrates is realized. The operation is simple, and the technology requirements are simple, so the method is suitable for the industrial production.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a method for preparing carbon functional nanomaterials at low temperature. Background technique [0002] With the development of dye and dyeing industry, its production wastewater has become one of the most important sources of water pollution. This type of wastewater has the characteristics of deep color, high chemical oxygen demand (COD) and biochemical oxygen demand (BOD) values, complex and changeable composition, large discharge, wide distribution, and difficult to degrade. If not treated, direct discharge will bring serious harm to the ecological environment. Dye wastewater treatment mainly includes chemical, biochemical and physical chemical methods. Activated carbon is a porous substance with a large specific surface area. It is one of the most effective adsorbents at present. However, the difficulty of regeneration of activated carbon and high cost are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B82Y40/00C02F1/28C02F103/30
Inventor 钱海生童国秀傅熠陈碧翠陈丽鲜祝妍刘新慧李良超
Owner ZHEJIANG NORMAL UNIVERSITY
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