Functional fiber for boron adsorption and preparation method and application thereof

A functional fiber, polyacrylonitrile fiber technology, applied in the direction of fiber type, fiber treatment, fiber chemical characteristics, etc., can solve the problems of inability to remove boron well, low concentration adsorption rate and limited adsorption capacity, to ensure repeated adsorption. The effect of regeneration, fast adsorption rate and short mass transfer distance

Inactive Publication Date: 2016-11-23
邯郸派瑞电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing boron adsorbents are mainly resin particles, and their low-concentration adsorption rate and adsorption capacity are limited, so they cannot remove boron in low-concentration solutions well.

Method used

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  • Functional fiber for boron adsorption and preparation method and application thereof
  • Functional fiber for boron adsorption and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In an embodiment of the present invention, a method for preparing a functional fiber for boron adsorption comprises the following steps:

[0022] (1) Place polyacrylonitrile fibers in an aqueous solution of ethylenediamine with a mass content of 2% ethylenediamine, and reflux at 70°C for 4 hours to prepare aminated polyacrylonitrile fibers.

[0023] (2) Place the aminated polyacrylonitrile fiber prepared in step (1) in an aqueous D-glucose solution with a D-glucose mass content of 10%, reflux at 25°C for 1h, and vacuum dry at 60°C The boron-adsorbed functional fiber is obtained by drying.

Embodiment 2

[0025] In an embodiment of the present invention, a method for preparing a functional fiber for boron adsorption comprises the following steps:

[0026] (1) The polyacrylonitrile fibers were placed in an aqueous solution of diethylenetriamine with a mass content of 43% of diethylenetriamine amine, and refluxed at 100° C. for 6 hours to prepare aminated polyacrylonitrile fibers.

[0027] (2) Place the aminated polyacrylonitrile fiber prepared in step (1) in an aqueous D-fructose solution with a D-fructose mass content of 50%, reflux at 60°C for 4h, and vacuum-dry at 80°C The boron-adsorbed functional fiber is obtained by drying.

Embodiment 3

[0029] In an embodiment of the present invention, a method for preparing a functional fiber for boron adsorption comprises the following steps:

[0030] (1) The polyacrylonitrile fiber balls were placed in an aqueous solution of triethylamine with a mass content of 22% of triethylamine, and refluxed at 90° C. for 5.5 hours to prepare aminated polyacrylonitrile fibers.

[0031] (2) Place the aminated polyacrylonitrile fiber prepared in step (1) in an aqueous solution of D-glucose with a D-fructose mass content of 25%, reflux at 40°C for 3.5h, and then dry naturally to obtain boron Absorbent functional fibers.

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Abstract

The invention discloses a functional fiber for boron adsorption and its preparation method and application. The general structural formula of the functional fiber is shown in chemical formula (A): Wherein, 200<x≤2400, 0<y≤1200. The polyacrylonitrile fiber is placed in an aqueous solution of organic amine and heated to reflux, then placed in an aqueous solution of D-glucose, heated to reflux, and dried to obtain a functional fiber. The functional fiber prepared by the invention can be used for the extraction and separation of boric acid in a strongly acidic environment, can absorb boron at a lower concentration, and has large adsorption capacity, fast adsorption rate and fast regeneration rate. At the same time, the good mechanical properties of polyacrylonitrile fibers can also ensure the repeated adsorption and regeneration of functional fibers.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a functional fiber for boron adsorption, a preparation method and application thereof. Background technique [0002] Boron is a semi-metallic element whose physical and chemical properties are between metal and non-metallic elements, endowing boron-doped materials with excellent properties such as flame retardancy, heat resistance, wear resistance, high hardness or light weight. With the wide application of boron-containing chemicals such as boric acid and borax in the chemical industry, materials, and electronics industries, a large amount of boron-containing wastewater is produced in the production and application process. Long-term drinking of boron-excessive water will harm human reproduction and the internal nervous system, and excessive boron in irrigation water will cause crop yield reduction. Therefore, the extraction and recovery of boron in aqueous solutio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/11D06M13/332D06M13/328D01F6/38C08F220/48C08F226/02C02F1/28D06M101/28
CPCD06M13/11C02F1/28C02F2101/108C08F220/48D01F6/38D06M13/328D06M13/332D06M2101/28
Inventor 孙世操陈兆文范海明张琴管迎梅刘大鑫黄国庆王循良刘彦洋王力
Owner 邯郸派瑞电器有限公司
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