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Method for preparing heavy metal ion exchange fibers by virtue of roundpod jute capable of being modified by microwave and application

A heavy metal ion and fiber exchange technology, applied in the field of water treatment, can solve the problems of difficult recovery of disposal materials, lack of emergency disposal technology, difficult application due to large flow resistance, etc., and achieves good mass transfer adsorption effect, shortened preparation time, and rapid preparation. Effect

Active Publication Date: 2015-04-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the practical problems such as lack of emergency treatment technology for sudden heavy metal water pollution, difficult recovery of disposal materials, or difficulty in application due to large flow resistance, the present invention provides a method and application of microwave rapid modification of jute to prepare heavy metal ion exchange fibers

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this embodiment, jute fiber is used as the adsorption raw material, and copper ions are selected as the target pollutant. The specific technical scheme is as follows:

[0029] 1. First cook the raw jute in boiling water for 15 minutes, then soak it in 20% sodium hydroxide, wash it with deionized water for 10 minutes, and then dry it in an oven.

[0030] 2. Add the pretreated jute fiber and pyromellitic dianhydride in a certain mass ratio (1:2) to the N,N-dimethylformamide solution, and adjust the temperature in the microwave oven to 90 ℃, after 10 minutes of reaction, the material was taken out, and after cleaning, the product was dried at 80 ℃ to constant weight, and the jute-based modified adsorption material prepared by microwave method was obtained.

[0031] The reaction equation is as follows:

[0032] .

[0033] Get the modified jute 0.2g prepared by the above method in a 250mL screw bottle, add a series of Cu(II) solutions of 100mL concentration, and carry...

Embodiment 2

[0035] In this embodiment, jute fiber is used as the adsorption raw material, copper ions are selected as the target pollutant, and a water bath heating experiment is carried out for comparison. The specific technical scheme is as follows:

[0036] 1. First cook the raw jute in boiling water for 30 minutes, then soak it in 20% sodium hydroxide, wash it with deionized water for 15 minutes, and then dry it in an oven.

[0037] 2. Add the pretreated jute fiber and ethylenediaminetetraacetic acid dianhydride in a certain mass ratio (2:1) to pyridine, adjust the temperature to 90°C in the microwave oven, and take out the material after reacting for 5 minutes. After cleaning, the product was dried at 80°C to constant weight, and the jute-based modified adsorption material prepared by microwave method was obtained.

[0038] The reaction equation is as follows:

[0039] .

[0040] Get 0.1g of the modified jute prepared by the above method in a 250mL screw bottle, add 100mL of Cu(I...

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Abstract

The invention discloses a method for preparing heavy metal ion exchange fibers by virtue of roundpod jute capable of being modified by microwave and application. The method comprises the following steps: I. firstly boiling roundpod jute fibers by boiled water, then soaking the roundpod jute fibers by using a sodium hydroxide solution and drying and storing; and II. adding the roundpod jute fibers pretreated in the step I and a complexing group active monomer into the solution, carrying out reaction in a microwave oven, after reaction, taking out the material, and after cleaning, putting the product in the oven to be dried until constant weight is achieved to obtain a roundpod jute-base modified adsorption material which can be used for sudden heavy metal pollution and conventional heavy metal wastewater treatment, so that the hardness of water is effectively reduced. According to the invention, the matrix is rapidly grafted and modified by virtue of a microwave radiation technology in the preparation process to prepare fibers with complexing functions, so that the advantages of non-thermal effect of microwaves and strong grafting penetrating power are fully utilized, chemical grafting reaction can be quickly and efficiently accomplished, the preparation time is greatly shortened, and the method is simple to operate and convenient and feasible.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a method and application for preparing heavy metal ion exchange fibers by rapidly modifying jute with microwaves. Background technique [0002] In recent years, with the rapid development of social economy, sudden heavy metal pollution incidents in my country's water bodies have occurred frequently, which not only damages and pollutes the environment we depend on for survival, but also seriously threatens human safety and health. At present, the emergency treatment methods that can be practically applied are still very limited. The coagulation and sedimentation method is mainly used. Although this method can make the content of dissolved heavy metals in the water reach the standard, the total amount of heavy metals in the water has not decreased, and there are still problems. Low disposal efficiency, poor field applicability and easy to cause secondary pollution and other p...

Claims

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Application Information

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IPC IPC(8): D06M10/08C02F1/42C02F1/62D06M101/06
Inventor 郑彤杜兆林王鹏
Owner HARBIN INST OF TECH
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