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Arsenic adsorbing fiber and synthesizing method thereof

A technology for absorbing fibers and fibers, applied in chemical instruments and methods, adsorbing water/sewage treatment, alkali metal compounds, etc., can solve the problems of less research on polymer materials and fiber materials, and achieve easy elution and regeneration, and large specific surface area , The effect of stable performance and quality

Active Publication Date: 2009-11-04
HENAN ACADEMY OF SCI CHEM RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the research on arsenic adsorption materials in water mainly focuses on iron-containing materials, iron-carrying materials and various inorganic materials. There are few studies on polymer materials containing organic functional groups, especially fiber materials.

Method used

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  • Arsenic adsorbing fiber and synthesizing method thereof
  • Arsenic adsorbing fiber and synthesizing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Submerge 5g of acrylic fibers in 30mL of ethylenediamine for reaction at 90°C for 4 hours; then wash the fibers with deionized water and immerse them in 100mL of 0.2M hydrochloric acid for reaction at 30°C for time 6h; finally, the fiber was washed with deionized water, dried at 70°C until constant weight, the weight was 5.91g, the weight gain rate was 18.2%, and the amine group content was measured to be 4.51mmol / g fiber. Its infrared spectrum is attached figure 1 As shown, there is a significant change compared with the infrared spectrum of acrylic fiber, and the absorption peak of cyano group (2243cm -1 ) is significantly weakened, and the absorption peak of the amine group (3428cm -1 、1616cm -1 ) is significantly enhanced.

Embodiment 2

[0020] Submerge 5g of acrylic fibers in 50mL of triethylenetetramine for reaction at a temperature of 140°C for 2 hours; then wash the fibers with deionized water and immerse them in 100mL of 0.5M hydrochloric acid for a reaction at a temperature of 40°C , time 6h; finally the fiber was washed with deionized water, dried at 70°C to constant weight, the weight was 6.03g, the weight gain rate was 20.6%, and the amine group content was measured to be 5.33mmol / g fiber.

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Abstract

The invention discloses an arsenic adsorbing fiber using acrylic fiber as a fundamental frame and a synthesizing method thereof, belonging to the technical field of polymer materials. In the structure of the fiber material, amido existing in a mode of hydrochloride is contained, and the amido can effectively adsorb arsenic radical in the water through an ion exchange reaction. The method for synthesizing the fiber is to lead the acrylic fiber to firstly perform a grafting reaction with a multi-amido compound to introduce amido, and the acrylic fiber reacts with the hydrochloric acid to transform the amido into the hydrochloride, and has simple reacting process and mild condition. The neutral fiber is stable in the air, cannot absorb carbon dioxide and other acid gases, and cannot affect the pH value of the water body when the arsenic adsorbing fiber is used in the water as an adsorbent.

Description

technical field [0001] The invention relates to a functional fiber material and a synthesis method thereof, in particular to a functional fiber material capable of adsorbing and removing arsenic compounds in water and a synthesis method thereof, belonging to the technical field of polymer materials. Background technique [0002] Arsenic is a metalloid element widely distributed in the atmosphere, water, soil, rocks and living organisms. The mining and smelting of arsenic and arsenic-containing metals, as well as the production of glass, pigments, technical materials, paper, and coal combustion that use arsenic or arsenic compounds as raw materials can produce arsenic-containing wastewater, waste gas, and waste residue, which will pollute the environment. And it can enter the human body through water, air and food, causing harm. Arsenic and arsenic compounds are recognized by many authoritative organizations such as the International Institute of Cancer (IARC) under the Worl...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28
Inventor 赵亮张小转赵东田振邦黄做华黄伟庆蒋凯V.S.萨达托夫
Owner HENAN ACADEMY OF SCI CHEM RES INST CO LTD
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