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Method for preparing heavy metal complexing fiber by quickly modified jute through microwaves and application of fiber

A jute fiber and heavy metal technology, applied in the field of water treatment, can solve the problems of lack of emergency treatment technology, large flow resistance, difficulty in application, and difficulty in recycling disposal materials, etc., and achieve good mass transfer and adsorption effects, shortened preparation time, and rapid preparation.

Inactive Publication Date: 2015-05-13
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 large flow resistance and difficult application, the present invention provides a method and application of microwave rapid modification of jute to prepare heavy metal complex fibers

Method used

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Examples

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 30 minutes, then soak it in 20% sodium hydroxide, wash it with deionized water for 30 minutes, and then dry it in an oven.

[0030] 2. Add the jute fiber and epichlorohydrin pretreated in step 1 into the N,N-dimethylformamide solution, adjust the temperature to 90°C in the microwave oven, and add triethylenetetramine for water bath reaction after reacting for 5 minutes , the mass ratio of jute, epichlorohydrin and polyamino compounds is 1:10:5, the material is taken out after heating in a water bath for 1h, and after cleaning, the product is placed in 80°C and dried to constant weight to obtain the jute base prepared by microwave method. Modified adsorption material.

[0031] The etherification reaction equation is as follows:

[0032] ;

[0...

Embodiment 2

[0037] 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:

[0038] 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 30 minutes, and then dry it in an oven.

[0039] 2. Add the jute fiber and epichlorohydrin pretreated in step 1 into the N,N-dimethylformamide solution, adjust the temperature to 90°C in the microwave oven, and add triethylenetetramine for water bath reaction after reacting for 5 minutes , the mass ratio of jute, epichlorohydrin and triethylenetetramine is 1:5:10, the material is taken out after heating in a water bath for 1h, and after cleaning, the product is placed in 80°C and dried to constant weight to obtain jute prepared by microwave method modified adsorbent materials.

[0040] Take 0.1g of the modified jute prepared by the above method in a 250mL screw bot...

Embodiment 3

[0042] 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:

[0043] 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 30 minutes, and then dry it in an oven.

[0044] 2. Add the jute fiber and epichlorohydrin pretreated in step 1 into the N,N-dimethylformamide solution, adjust the temperature to 90°C in the microwave oven, and add diethylenetriamine for water bath reaction after reacting for 5 minutes , the mass ratio of jute, epichlorohydrin and diethylenetriamine is 1:10:5, the material is taken out after heating in a water bath for 1h, and after cleaning, the product is placed in 80°C and dried to constant weight to obtain jute prepared by microwave method modified adsorbent materials.

[0045] Take 0.1g of the modified jute prepared by the above method in a 250mL screw bottle,...

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Abstract

The invention discloses a method for a preparing heavy metal complexing fiber by quickly modified jute through microwaves and the application of the fiber. The method comprises the following steps: (1) firstly, cooking jute fibers with boiling water, then soaking the cooked jute fibers with a sodium hydroxide solution, and baking the soaked jute fibers for preservation; (2) adding the preprocessed jute fiber and epoxy chloropropane into a solution, performing early stage etherification in a microwave oven, then adding activated monomers of complexing groups for ammoniation and heating in a water bath, taking out materials after reaction, cleaning the materials to obtain products, and placing the products in an oven, baking the products in the oven to constant weight so as to obtain a jute-based modified adsorbing material which can be used for processing unexpected heavy metal pollution and conventional heavy metal wastewater. In the preparation process, a microwave irradiation technology is used for quickly grafting and modifying basal bodies to prepare the fiber with a complexing function, the non-heat effect of the microwaves and the advantage of high grafting and penetrating power of the microwaves are fully utilized, a chemical grafting reaction can be quickly and efficiently completed, the preparation time is greatly shortened, and the method is simple to operate and is 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 complex 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 proble...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/62
CPCB01J20/24C02F1/286C02F1/288C02F2101/20
Inventor 郑彤杜兆林冯玉明王鹏
Owner HARBIN INST OF TECH
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