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

Novel silica gel loaded cross-linked chitosan adsorbent for heavy metal

A technology of heavy metal ions and cross-linked chitosan, applied in the direction of adsorption water/sewage treatment, other chemical processes, chemical instruments and methods, etc., to achieve the effects of rapid sedimentation, high mechanical strength and simple operation

Inactive Publication Date: 2006-07-19
QINGDAO UNIV OF SCI & TECH
View PDF0 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the existing chitosan-based heavy metal ion adsorbent, the present invention provides a heavy metal ion adsorbent with simple preparation process, excellent adsorption performance, low price, environmental friendliness, and convenient and simple use

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
  • Novel silica gel loaded cross-linked chitosan adsorbent for heavy metal
  • Novel silica gel loaded cross-linked chitosan adsorbent for heavy metal
  • Novel silica gel loaded cross-linked chitosan adsorbent for heavy metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034]The present invention is to add refined chitosan 2g in 1mol / L 100mL acetic acid solution, magnetic force stirs 30min, removes insoluble residue after filter cloth filtration; Add inorganic silane reagent γ-glycidoxypropyltrimethoxysilane 2mL in filtrate , after magnetic stirring for 30 minutes, add 50 g of 100-200 mesh silica gel to the solution while stirring, stir evenly, and ultrasonicate for 40 minutes; pour the suspension into a petri dish, stir evenly, and let stand at room temperature for 48 hours until the solid is dry; Soak in 0.01mol / L 100mL sodium hydroxide solution for 30 minutes, take out the adsorbent, wash with distilled water until neutral, and dry at 40°C to obtain the silica gel-loaded cross-linked chitosan heavy metal ion adsorbent.

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 discloses a new-typed heavy metal ion adsorbent of silica loading crosslinking chitosan in the environment-protection domain, which is characterized by the following: the metal ion adsorbent adapts gamma-epoxy propyl-trimethyl silane with epoxy group and soluble inorganic silane agent as chitosan crosslinking agent; the chitosan crosslinking action is accomplished by the reaction of chitosan and epoxy group and the silane agent hydrolysis and condensation course. The invention displays simple course without organic solvent and environmental pollution, which can dispose the waste water with heavy metal ion.

Description

【Technical field】 [0001] The invention relates to a heavy metal ion adsorbent, in particular to a novel silica gel-loaded cross-linked chitosan heavy metal ion adsorbent. The invention belongs to the field of environmental protection, in particular to the field of waste or waste water treatment containing harmful heavy metal ions. 【Background technique】 [0002] Heavy metals generally exist widely in nature in natural concentrations. However, in recent decades, with the development of modern industry, the mining, smelting, processing and commercial manufacturing activities of heavy metals have been increasing, causing many heavy metals to enter the atmosphere, water and soil environment, causing serious environmental pollution. At present, as one of the important pollution sources in the world, heavy metals such as mercury, lead, copper, and nickel are increasingly harmful to human health, and the treatment of heavy metal pollution has attracted widespread attention. Treat...

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
IPC IPC(8): B01J20/26C02F1/28C02F1/62
Inventor 李峰李雪梅张书圣
Owner QINGDAO UNIV OF SCI & TECH
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