Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method and application of sulfhydryl chitosan/activated carbon composite functional membrane

A composite function, activated carbon technology, applied in chemical instruments and methods, water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problems of complicated treatment process, increased treatment cost, unsatisfactory treatment effect, etc. The effect of good strength, simple treatment process and cost reduction

Inactive Publication Date: 2013-01-16
JIANGNAN UNIV
View PDF2 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing technology requires specific pH conditions, and there must not be too many competitive anions, so as to have a better treatment effect, so the process includes pre-oxidation, pH adjustment before treatment and pH callback steps after treatment. It will inevitably complicate the treatment process and increase the treatment cost, and when the water source contains various competitive anions, the treatment effect is very unsatisfactory

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
  • Preparation method and application of sulfhydryl chitosan/activated carbon composite functional membrane
  • Preparation method and application of sulfhydryl chitosan/activated carbon composite functional membrane
  • Preparation method and application of sulfhydryl chitosan/activated carbon composite functional membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] This example is the preparation of mercapto-chitosan / activated carbon composite functional membrane (CS-SH / C). The specific process is: add 10g chitosan (CS) to 240g of 0.50mol L -1 In the acetic acid aqueous solution, stirring and dissolving to obtain the chitosan acetic acid solution; take the powdered activated carbon, treat it with 10% nitric acid aqueous solution, heat and stir in a boiling water bath for 2 hours, filter, wash with deionized water until neutral, and dry at 120°C for 5 h, to obtain dry activated carbon; add 1 g of the treated dry activated carbon to the chitosan acetic acid solution, stir evenly to obtain the casting solution; take 6 mL of the casting solution and add it to a circular polypropylene mold with a diameter of 5 cm, and keep the temperature at 60 °C , when the volatilization weight loss is about 50%, soak the membrane in 1mol·L -1 NaOH aqueous solution coagulation bath, after coagulation in the coagulation bath for 24h, rinse the membra...

Embodiment 2

[0022] This example is the preparation of mercapto-chitosan / activated carbon composite functional membrane (CS-SH / C). The specific process is: add 10g chitosan (CS) to 300g of 0.50mol L -1 acetic acid aqueous solution, stirring and dissolving to obtain chitosan acetic acid solution; take powdered activated carbon, treat with 10% nitric acid, heat and stir in a boiling water bath for 3 hours, filter, wash with deionized water until neutral, and dry at 120°C for 5 h, to obtain dry activated carbon; add 2 g of the treated dry activated carbon to the chitosan acetic acid solution, and stir evenly to obtain a casting solution. Take 6mL of the casting solution and add it to a circular polypropylene mold with a diameter of 5cm, keep the temperature at 60°C, and when the volatilization loses about 50%, soak the film in 1mol·L -1NaOH aqueous solution coagulation bath, after coagulation in the coagulation bath for 24h, rinse the membrane with distilled water until neutral to obtain chi...

Embodiment 3

[0024] This example is the preparation of mercapto-chitosan / activated carbon composite functional membrane (CS-SH / C). The specific process is: add 10g chitosan (CS) to 400g of 0.50mol L -1 acetic acid aqueous solution, stir and dissolve to obtain chitosan acetic acid solution; take powdered activated carbon, treat it with 10% aqueous nitric acid solution, heat and stir in a boiling water bath for 3 hours, filter, wash with deionized water until neutral, and dry at 120°C 5 h to obtain dry activated carbon; add 2 g of the treated dry activated carbon to the chitosan acetic acid solution and stir evenly to obtain a casting solution. Take 6mL of the casting solution and add it to a circular polypropylene mold with a diameter of 5cm, keep the temperature at 60°C, and when the volatilization loses about 50%, soak the film in 1mol·L -1 NaOH aqueous solution coagulation bath, after coagulation in the coagulation bath for 24h, rinse the membrane with distilled water until neutral to o...

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 relates to a preparation method and application of a sulfhydryl chitosan / activated carbon composite functional membrane, belonging to the technical fields of novel functional membrane material preparation and arsenic-polluted water treatment. The preparation method comprises the following steps: compounding chitosan and activated carbon into a membrane, adding epoxy chloropropane to carry out cross-linking to obtain a cross-linked chitosan / activated carbon composite membrane, modifying the cross-linked chitosan / activated carbon composite membrane with 2,3-dimercaptosuccinic acid, and introducing sulfhydryl group onto the chitosan framework, thereby obtaining the functional membrane. The novel functional membrane prepared by the method provided by the invention can display multiple synergic functions of chitosan, activated carbon and sulfhydryl group, is used for treating arsenic-polluted water, is applicable to wide pH range, does not need the step of preoxidation, can effectively remove As (III) and As (V), is free from the influence of coexistent competitive anions, has the advantages of favorable mechanical strength and simple treatment technique, can be used repeatedly, can greatly lower the cost, and is a new material and method having industrial application prospects.

Description

technical field [0001] A preparation method and application of a mercapto-chitosan / activated carbon composite functional membrane. The invention belongs to the technical field of preparation of new functional membrane materials and water treatment, and specifically relates to a preparation method of a mercapto-chitosan / activated carbon composite functional membrane and its use for treating arsenic Polluted water. Background technique [0002] Arsenic contamination in water is a global concern. The main cause of arsenic pollution is the use of arsenic-containing pesticides and chemicals, such as herbicides and wood preservatives. In addition, during the mining process of arsenic-containing minerals, arsenic enters the surface and underground water sources due to leaching, thereby causing arsenic pollution in water sources. Arsenic is a highly carcinogenic substance and has been identified as a Class I carcinogen by the US Centers for Disease Control and the International Ag...

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 Applications(China)
IPC IPC(8): C08J7/12C08J5/18C08L5/08C08K9/02C08K3/04C02F1/62C02F1/28
Inventor 邹路易顾文秀毛小庆李磊吴婷婷王玉如
Owner JIANGNAN UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com