Preparation method for bacterial cellulose water ultrafiltration adsorption material

A technology of bacterial cellulose and adsorption materials, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of slow operation of the filtration process, achieve low cost, eliminate bacteria, and have a large specific surface area Effect

Inactive Publication Date: 2013-09-18
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The filtration process runs slowly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The bleached bacterial cellulose wet film is placed in a refiner with a rotation speed of 5000 / min for processing to become bacterial cellulose fibers, and then filtered through a filter press to prepare 15% to 50000% moisture content. Bacterial cellulose superfine fiber, superfine fiber diameter 10~500nm, superfine fiber length 200nm~10mm. Nano-bacteria cellulose was treated with silica suspension at a concentration of 1% by hydrothermal synthesis to obtain silica tubular-coated bacterial cellulose, and the obtained silica tubular-coated nano-bacteria cellulose was mixed with boehmite powder, and the resulting The mass ratio of the silica tubular coated nano-bacteria cellulose to boehmite powder is 0.1:1; it is placed between flat molds with a transparent pore structure, and then the mixture is activated by sinusoidal alternating current with a frequency of 50 Hz. After treatment for 20 minutes, the nano-bacterial cellulose obtained after the activation treatment was p...

Embodiment 2

[0021] The bleached bacterial cellulose wet film is placed in a refiner with a rotation speed of 15000 / min for processing to become bacterial cellulose fibers, and then filtered through a filter press to prepare 15% to 50000% moisture content. Bacterial cellulose superfine fiber, superfine fiber diameter 10~500nm, superfine fiber length 200nm~10mm. Nano-bacteria cellulose was treated with silica suspension at a concentration of 1% by hydrothermal synthesis to obtain silica tubular-coated bacterial cellulose, and the obtained silica tubular-coated nano-bacteria cellulose was mixed with boehmite powder, and the resulting The mass ratio of the silicon oxide tubular coated nano-bacteria cellulose to boehmite powder is 100:1; put it into a tubular mold with a transparent pore structure, and then activate the mixture with a sinusoidal alternating current with a frequency of 50 Hz After 180 minutes, the nano-bacterial cellulose obtained after the activation treatment was prepared so ...

Embodiment 3

[0023] Put the bleached bacterial cellulose wet film in a refiner with a rotational speed of 20,000 / min for processing to become bacterial cellulose fibers, and then filter through a filter press to prepare cellulose with a moisture content of 15% to 50,000%. Bacterial cellulose superfine fiber, superfine fiber diameter 10~500nm, superfine fiber length 200nm~10mm. Nano-bacteria cellulose was treated with silica suspension at a concentration of 1% by hydrothermal synthesis to obtain silica tubular-coated bacterial cellulose, and the obtained silica tubular-coated nano-bacteria cellulose was mixed with boehmite powder, and the resulting The mass ratio of the silica tubular coated nano-bacteria cellulose to boehmite powder is 60:1; put it into a U-shaped mold with a transparent pore structure, and then use a sinusoidal alternating current with a frequency of 50 Hz to control the mixture. Carry out the activation treatment for 60 minutes, and prepare the nano-bacteria cellulose ob...

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Abstract

The invention provides a preparation method for a bacterial cellulose water ultrafiltration adsorption material. The preparation method comprises the following steps: processing a bleached wet bacterial cellulose membrane in a pulping machine with a rotating speed of 2, 000 to 100, 000 r/m so as to obtain a bacterial cellulose fiber; subjecting the bacterial cellulose fiber to press filtration by a filter press so as to prepare a superfine bacterial cellulose fiber; treating nanometer bacterial cellulose by using a silicon dioxide suspension liquid with a concentration of 1% through hydro-thermal synthesis so as to obtain tubular silicon oxide coated bacterial cellulose; mixing the obtained tubular silicon oxide coated nanometer bacterial cellulose with boehmite powder and putting an obtained mixture into a die with a transparent pore structure; and activating the mixture by using sinusoidal alternating current with a frequency of 50 Hz so as to form the adsorption material with large eyelets. The bacterial cellulose water ultrafiltration adsorption material prepared in the invention can rapidly remove bacteria in water, does not causes obstruction and enables a simple and low-cost water purification method meeting social demands to be feasible.

Description

technical field [0001] This patent relates to a preparation method of a super-strong and environment-friendly ultrafiltration water adsorption material, especially a preparation method of a bacterial cellulose ultrafiltration water adsorption material. Background technique [0002] my country's water shortage and water pollution are becoming increasingly serious. On the one hand, groundwater has long been in a state of restricted use due to excessive exploitation. The water volume of rivers, rivers, lakes, and parks is decreasing year by year, while the population using water is increasing year by year. On the other hand, there are still many people who can only use water polluted by pathogens or public hazards. The health hazards of drinking water pollution not only affect the present generation, but even affect the survival and reproduction of human offspring. General Secretary Hu Jintao made important instructions on many occasions: "Drinking water safety is related to ...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28
Inventor 张迎晨吴红艳张夏楠
Owner ZHONGYUAN ENGINEERING COLLEGE
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