Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of biocomposite membrane material and its preparation and application method

A biocomposite film and solution technology, applied in chemical instruments and methods, alkali metal compounds, other chemical processes, etc., can solve the problems of complex preparation process, low adsorption capacity, secondary pollution, etc., and achieve stable physical and chemical properties. The effect of good membrane performance and easy operation

Active Publication Date: 2018-02-09
CENT SOUTH UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a biocomposite membrane material capable of removing fluoride ions in water and its preparation for solving the problems of low adsorption capacity, complicated preparation process, high cost, and secondary pollution in existing fluoride removal materials. and application method, the preparation process of the material is simple, the cost is low, the removal effect on fluoride ions is good, the adsorption capacity is large, the adsorption rate is fast, and the operation is simple and convenient.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of biocomposite membrane material and its preparation and application method
  • A kind of biocomposite membrane material and its preparation and application method
  • A kind of biocomposite membrane material and its preparation and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Prepare Chashi liquid medium, weigh 30g sucrose, 3g sodium nitrate, 1g dipotassium hydrogen phosphate, 0.5g magnesium sulfate heptahydrate, 0.5g potassium chloride and 0.01g ferrous sulfate, dissolve in 300mL deionized water, then , Make the volume to 1 liter with deionized water, and after high temperature (121°C) autoclave sterilization for 30 minutes, a liquid culture medium is obtained for use. The concentration is 10 6 -10 7 A / ml Aspergillus sp.F-1 (preservation number CGMCC No.5858) bacterial solution was inoculated into liquid medium for culture, and then placed in a constant temperature shaking box at a temperature of 32℃ and a rotation speed of 170r / mim 3 Day; take 100mL of bacterial solution (concentration of 8g L -1 ) Put the volume into 150mL of 0.1mol / L aluminum sulfate solution, add 0.1M NaOH dropwise to adjust the pH to 6.2, the reaction time is 72 hours, then heat at 50°C for 2 hours, gravity filter for 20min, sonicate with deionized water Wash for 10 min...

Embodiment 2

[0028] Prepare Chashi liquid medium, weigh 30g sucrose, 3g sodium nitrate, 1g dipotassium hydrogen phosphate, 0.5g magnesium sulfate heptahydrate, 0.5g potassium chloride and 0.01g ferrous sulfate, dissolve in 300mL deionized water, then , Make the volume to 1 liter with deionized water, and after high temperature (121°C) autoclave sterilization for 30 minutes, a liquid culture medium is obtained for use. The concentration is 10 6 -10 7 A / ml Aspergillus sp.F-1 (Accession No. CGMCC No. 5858) bacterial solution was inoculated into liquid medium for cultivation, and then placed in an incubator with a temperature of 37°C and a rotation speed of 200r / mim 4 Days; after the bacteria are matured, measure 500mL of bacteria liquid (concentration of 10g L -1 ) Put into 200mL 0.2mol / L aluminum chloride solution, add 0.1M NaOH dropwise to adjust the pH to 6.5, the reaction time is 36 hours, then heat at 50℃ for 2 hours, gravity filter for 20min, and ultrasonically clean with deionized water ...

Embodiment 3

[0030] At room temperature, the biofilm material prepared in Example 1 was used to filter a solution containing a fluoride ion concentration of 4.69 mg / L, and the fluoride ion concentration in the filtered solution was measured by ion chromatography. The fluoride ion concentration after filtration is reduced to 0.20mg / L, and the fluorine removal efficiency reaches 96%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of water purification, and in particular relates to a biological composite membrane material as well as preparation and application methods thereof. The biological composite membrane material is prepared by the following steps: modifying filamentous bacteria and a metabolite thereof, which are used as matrixes, by virtue of acidic aluminum salt and alkaline liquor, filtering by virtue of gravity, ultrasonically washing, pouring into a membrane forming container, performing the vacuum suction filtration, soaking in a polymine solution, and freeze-drying. The biological composite membrane material is simple in preparation process, moderate in preparation and operation conditions, low in cost and free from secondary pollution; when the biological composite membrane material is used for removing fluorine ions in the water, by virtue of various functions of the biological composite membrane such as adsorption, ion exchange and interception, the application method is simple and easy in operation, and the fluorine removal efficiency is high; and when the biological composite membrane material is used for treating the fluorine-containing water of 25mg / L or less, the removal rate of the fluorine ions can reach 90 to 96 percent by virtue of filtering of the biological composite membrane.

Description

Technical field [0001] The invention belongs to the technical field of water purification, and specifically relates to a biological composite material capable of efficiently removing fluoride ions in water and a preparation and application method thereof. It is suitable for the deep purification of industrial wastewater, and the removal of fluoride ions in drinking water, groundwater, lakes, rivers and other water bodies. Background technique [0002] High fluoride water is widely distributed in the world, and endemic drinking water-type fluorosis has been reported in more than 50 countries across five continents. In my country, most provinces, municipalities, and autonomous regions have endemic fluorosis to varying degrees. The distribution area of ​​drinking-type endemic fluorosis in the country is about 2.2 million km. 2 In my country, more than 70 million people drink high-fluoride water, which leads to varying degrees of fluorosis. Among them, more than 40 million suffer fro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F1/58
CPCB01J20/0248B01J20/26B01J20/28033B01J2220/46B01J2220/4868C02F1/288
Inventor 杨卫春柴立元唐琼芝田舜琪杨志辉唐崇俭王海鹰李青竹
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com