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

Multi-adsorbing-site biomass-based hyperbranched multi-heavy-metal-ion adsorbing material as well as preparation method and application thereof

A technology for heavy metal ions and adsorption materials, which is applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve the problems of high energy consumption, difficult to deal with heavy metal ions at the same time, and achieve the effect of promoting adsorption rate.

Active Publication Date: 2021-09-17
GUANGXI UNIV
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The functional groups grafted on the surface of traditional biomass generally have only one or one type of functional groups. Although they can effectively adsorb heavy metal ions in water, they can only deal with one or heavy metal ions with the same charge properties, and it is difficult to treat the heavy metal ions in water at the same time. Heavy metal ions of various properties, and since most of the heavy metal ions immobilized on the surface of the adsorbent react with the functional groups on the adsorbent in the form of chemical bonds to form chemical bonds, a large amount of energy is consumed during the desorption process

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
  • Multi-adsorbing-site biomass-based hyperbranched multi-heavy-metal-ion adsorbing material as well as preparation method and application thereof
  • Multi-adsorbing-site biomass-based hyperbranched multi-heavy-metal-ion adsorbing material as well as preparation method and application thereof
  • Multi-adsorbing-site biomass-based hyperbranched multi-heavy-metal-ion adsorbing material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The preparation of hyperbranched polycarboxylic acid is specifically as follows: trimethylolpropane, citric acid and p-toluenesulfonic acid are mixed and reacted for 1.5h under stirring conditions at 135° C. to obtain hyperbranched polycarboxylic acid; the trimethylolpropane The molar ratio with citric acid is 1:4, and the added mass of p-toluenesulfonic acid is 1.5wt% of the total mass of trimethylolpropane and citric acid.

[0033] The preparation of hyperbranched polyamine is as follows: tetraethylenepentamine and methyl acrylate are mixed according to the molar ratio of 2:1, and reacted at 0°C for 20h under stirring; the reaction system is heated to 70°C, stirred for 2h; The temperature of the reaction system is raised to 100° C., and the reaction is stirred for 2 hours; the temperature of the reaction system is raised to 140° C., and the reaction is stirred for 2 hours; the product after the reaction is hyperbranched polyamine.

[0034] The preparation of hyperbran...

Embodiment 1

[0035] Example 1: Preparation of multi-adsorption site biomass-based hyperbranched multi-metal ion adsorption material

[0036] (1) After mixing hyperbranched polyamine and hyperbranched polythiourea at a low temperature of 0°C, add hyperbranched polycarboxylate, wherein the mass of hyperbranched polyamine, hyperbranched polythiourea and hyperbranched polycarboxylate The ratio is 1:1:2; then follow the temperature program of 60°C for 2 hours and 100°C for 2 hours to complete the reaction. After the reaction is completed and cooled naturally, a hyperbranched polymer containing N, O, and S chelating atoms can be obtained. The N-containing groups on the hyperbranched polymer containing N, O, and S chelating atoms are primary amino groups, secondary amino groups and tertiary amino groups, the O-containing groups are carboxyl groups, and the S-containing groups are C-S and C=S; The molar ratio of N-containing groups on the hyperbranched polymer of , O, S chelating atoms: O-containi...

Embodiment 2

[0038] Example 2: Preparation of multi-adsorption site biomass-based hyperbranched multi-metal ion adsorption material

[0039] (1) After mixing hyperbranched polyamine and hyperbranched polythiourea at a low temperature of 0°C, add hyperbranched polycarboxylate, wherein the mass of hyperbranched polyamine, hyperbranched polythiourea and hyperbranched polycarboxylate The ratio is 5:1:10; then follow the temperature program of 60°C for 2 hours and 100°C for 2 hours to complete the reaction. After the reaction is completed and cooled naturally, a hyperbranched polymer containing N, O, and S chelating atoms can be obtained. The N-containing groups on the hyperbranched polymer containing N, O, and S chelating atoms are primary amino groups, secondary amino groups and tertiary amino groups, the O-containing groups are carboxyl groups, and the S-containing groups are C-S and C=S; The molar ratio of N-containing groups on the hyperbranched polymer of , O, S chelating atoms: O-contain...

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

PropertyMeasurementUnit
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
clearance rateaaaaaaaaaa
Login to View More

Abstract

The invention discloses a multi-adsorbing-site biomass-based hyperbranched multi-heavy-metal-ion adsorbing material as well as a preparation method and application thereof. Biomass raw materials are used as a matrix, and hyperbranched polymers containing N, O and S chelate atoms are used as functional reagents; the multi-adsorbing-site biomass-based hyperbranched multi-heavy metal ion adsorbing material is prepared by adopting a one-step rapid cross-linking method, wherein a hyperbranched polymer has two or more different heavy metal ion adsorbing sites (containing elements such as N, S and O). The material disclosed by the invention has a good adsorbing effect when being applied to adsorbing in a water body containing various heavy metal ions, the prepared material has excellent adsorbing performance on multiple heavy metal ions in the water body, low-concentration multiple heavy metal ions (Cr < 6 + >, Cu < 2 + > and Pd < 2 + >) can be synchronously, quickly and completely removed within 10 minutes, and no residual heavy metal ions exist in the treated water body. The regeneration performance is stable, and the regeneration rate of the material is still 96% or above after 50 times of regeneration.

Description

technical field [0001] The invention belongs to the field of fiber modification, and in particular relates to a multi-adsorption site type biomass-based hyperbranched multi-metal ion adsorption material and a preparation method and application thereof. Background technique [0002] With the rapid development of modern industry, a large number of mining, metallurgy, electroplating, leather and other industries have been established, which will inevitably cause a large amount of heavy metal ions to flow into human daily life through industrial wastewater or industrial waste residues, causing irreversible damage to the human body. A heavy metal ion treatment method was developed by researchers. Common heavy metal ion treatment methods include: chemical precipitation, electrochemical method, ion exchange method, and adsorption method. The adsorption method is simple to operate and easy to treat wastewater containing heavy metal ions on a large scale, and has attracted widespread...

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): B01J20/24B01J20/30C02F1/28C02F101/20C02F101/22
CPCB01J20/24C02F1/286C02F2101/20C02F2101/22B01J2220/4825B01J20/3078B01J2220/445B01J2220/4831B01J2220/485
Inventor 朱红祥薛飞何辉王磊雷显林
Owner GUANGXI 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