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Cellulose-base chelated fiber and its synthesizing method and use

A cellulose fiber and chelating fiber technology, applied in the field of chemical modification of cellulose fibers, can solve the problems of slow diffusion, difficult incineration, and high hydrophobicity

Inactive Publication Date: 2007-11-14
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Granular synthetic chelating resins generally have a rigid three-dimensional structure, high hydrophobicity, and slow diffusion of metal ions or regenerants to the resin, which affects the treatment efficiency. In particular, those non-renewable and one-time use resins are difficult to incinerate. , therefore, how to restore the adsorption capacity of the used resin has become a big problem

Method used

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  • Cellulose-base chelated fiber and its synthesizing method and use
  • Cellulose-base chelated fiber and its synthesizing method and use
  • Cellulose-base chelated fiber and its synthesizing method and use

Examples

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Effect test

Embodiment 1

[0070] Epoxy-activated bleached eucalyptus pulp was prepared by bleaching eucalyptus pulp and glycidyl methacrylate at a mass ratio of 1:2; The mass ratio of 3.4 is used to make polyamine-type bleached eucalyptus pulp; the mass ratio of polyamine-type bleached eucalyptus pulp to chloroacetic acid is 1:2 to make polyamine-polycarboxylic acid-type bleached eucalyptus pulp.

Embodiment 2

[0072] masson pine thermomechanical pulp and glycidyl methacrylate with a mass ratio of 1:1.5 to make epoxy-activated masson pine thermomechanical pulp; epoxy-activated masson pine thermomechanical pulp and diethylenetriamine with 1 : 3 mass ratio to make polyamine masson pine thermomechanical pulp; polyamine masson pine thermomechanical pulp and chloroacetic acid in a mass ratio of 1:1 to make polyamine polycarboxylic acid masson pine thermomechanical pulp .

Embodiment 3

[0074] Put 2.5g of dry bleached eucalyptus pulp in 250ml of distilled water with nitrogen protection to disperse evenly, add 5.0g of glycidyl methacrylate, 0.2ml of emulsifier A and 10ml of 0.1mol / L cerium ammonium nitrate Solution (prepared with 1mol / L nitric acid) and uniformly dispersed, treated at 60°C for 2 hours, then filtered out the fibers, soaked in butanone for 30 minutes at room temperature, filtered, washed with hot distilled water, dried, and finally treated with butanone Extracted for 24 hours to obtain 4.8 g of bleached kraft eucalyptus pulp grafted with glycidyl methacrylate.

[0075] Get 1.0g of glycidyl methacrylate grafted bleached eucalyptus pulp and water, 3.8ml ethylenediamine, and react in medium N,N-dimethylformamide at 70°C for 3 hours, Obtained 1.12g polyamine type chelate fiber. This polyamine type chelating fiber 0.1g is added respectively in the 50ml cupric nitrate and the lead nitrate solution that metal ion concentration is 500mg / L, and control ...

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Abstract

This invention discloses a cellulose base chelated textile fiber and the synthetic method and the application. The chelated textile fiber takes the native cellulose textile fiber as the raw material. Through the duplet bond and the shrinkage glycerin compound carries on the free radical stem grafting copolymerization, we obtain the cellulose textile fiber which the epoxy activates, this epoxy activates the cellulose textile fiber and the polyethylene multi-amines respond a lot the amine chelated textile fiber, the multi-amine chelated textile fiber continues with the chloroacetic acid to respond, multi-amine multi-carboxylic acid chelated textile fiber. This kind of cellulose base chelated textile fiber has the fine trapping performance to the harmful heavy metal ion, and the synthetic method is simple, safe. the synthesis cost is low, too.

Description

1. Technical field [0001] The invention belongs to the field of chemical modification of cellulose fibers, and in particular relates to cellulose-based chelating fibers and a synthesis method and application thereof. This cellulose-based chelating fiber can selectively and efficiently adsorb trace metal ions in water, especially harmful heavy metal ions such as copper and zinc, and can be widely and effectively used in the purification of industrial wastewater and drinking water. 2. Background technology [0002] With the continuous development of industrial technology, water pollution has become increasingly serious. Industrial wastewater and drinking water contain various harmful heavy metal ions, which must be removed. At the same time, they can be separated and recycled to turn waste into treasure. [0003] Ion exchange resins and chelating resins are widely used in the removal, trapping and enrichment of harmful metal ions in wastewater, but they may not have good sele...

Claims

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Application Information

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IPC IPC(8): D06M14/10D06M13/332D06M11/76
Inventor 翟华敏黄军
Owner NANJING FORESTRY UNIV
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