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Microwave-assisted method for preparing chelate fibers

A chelating fiber and microwave-assisted technology, which is applied in the field of microwave-assisted preparation of chelating fiber, can solve the problems of long heating time, low utilization rate of raw materials, and inability to meet emergency treatment of sudden water pollution, etc., achieving efficient removal and huge application potential Effect

Inactive Publication Date: 2018-03-09
SHAANXI SHENGMAI PETROLEUM
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Problems solved by technology

However, the current methods of modifying fibers are mostly conventional heating methods such as water bath heating or oil bath heating, which have long heating time, low raw material utilization rate and poor modification effect, which cannot meet the emergency treatment requirements for sudden water pollution.

Method used

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Embodiment Construction

[0017] A method for microwave-assisted preparation of chelated fibers, comprising the steps of:

[0018] (1) Activation of polyacrylonitrile fibers;

[0019] (2) Activated fiber pre-crosslinking;

[0020] (3) Preparation of chelated fiber.

[0021] Wherein, the specific process of the activation of the polyacrylonitrile fiber is as follows: Weigh 1g of the polyacrylonitrile fiber, add it to a reaction bottle containing 100 mL of 10% NaOH aqueous solution, mix it thoroughly and transfer it to a microwave reactor, set The microwave power was set at 200W, the heating program was 2 min×5 groups, and there was an interval of 30 s between the two groups to prevent bumping caused by excessive temperature; after the reaction was completed, the activated fibers were taken out and washed with hot water and anhydrous water respectively Wash with ethanol to neutrality, and dry in a drying oven to constant weight to obtain activated fibers.

[0022] The specific process of the pre-cross...

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Abstract

The invention relates to the technical field of synthetic fiber technology, in particular to a microwave-assisted method for preparing chelate fibers. A microwave-assisted method for preparing chelate fibers, comprising the following steps: (1) activation of polyacrylonitrile fibers; (2) pre-crosslinking of activated fibers; (3) preparation of chelate fibers. The chelating fiber made by the invention realizes efficient removal of mercury ions in water. The maximum adsorption capacity for mercury ions can reach 333.1 mg / g, and the adsorption capacity does not change much after regeneration for 5 times. It can be seen that chelating fibers have great application potential in treating mercury ion water pollution.

Description

technical field [0001] The invention relates to the technical field of synthetic fiber technology, in particular to a microwave-assisted method for preparing chelate fiber. Background technique [0002] In recent years, sudden pollution incidents of surface water in my country have occurred frequently, among which sudden heavy metal pollution is a common type of pollution incident among many potential pollution incidents of surface water. Heavy metal pollution in the water environment has the characteristics of non-degradability, easy accumulation in organisms, great harm to human body and far-reaching harm to the environment. Among them, mercury, one of the "five poisons" of heavy metals, will cause serious damage to the central nervous system of humans, especially adolescents, and inorganic mercury will be converted into more toxic methylmercury under the action of microorganisms. Mercury pollution in the environment is an important task related to the ecological environm...

Claims

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Application Information

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IPC IPC(8): D06M10/00D06M14/28D06M11/53B01J20/26C02F1/28C02F101/20D06M101/28
CPCD06M10/003B01J20/261C02F1/285C02F2101/20D06M11/53D06M14/28D06M2101/28
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM
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