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Method for preparing magnetic adsorbing material by taking water hyacinth as raw material

A magnetic adsorption material, water hyacinth technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as environmental pollution, and achieve the effects of reducing damage, improving adsorption performance, and simple preparation method

Inactive Publication Date: 2017-05-31
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the purpose of the present invention is to find a kind of effective utilization of waste, solve the environmental pollution problem, prepare the method for water hyacinth adsorption material, and can be effectively applied in industrialized production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The discarded water hyacinth was salvaged, washed, and vacuum-dried at 70°C for 24 hours. Weigh 6g of dried water hyacinth and 9g of zinc chloride, measure 50ml of deionized water, 20ml of NaOH solution, seal in a 100ml polytetrafluoroethylene autoclave, react at 180°C for 6h; cool to room temperature, Vacuum filtration and washing with deionized water, followed by vacuum drying to obtain the water hyacinth carbonaceous precursor. Take the above-mentioned water hyacinth carbon precursor and mix it with ferric chloride hexahydrate, add a certain amount of deionized water and sodium hydroxide solution, pour it into a polytetrafluoroethylene reactor, keep the temperature at 180°C for 6 hours, and then cool to room temperature Filter, wash and dry to obtain a magnetic adsorbent material.

Embodiment 2

[0016] The discarded water hyacinth was salvaged, washed, and vacuum-dried at 70°C for 24 hours. Weigh 5g of dried water hyacinth and 8g of zinc chloride, measure 60ml of deionized water, 20ml of NaOH solution, seal in a 100ml polytetrafluoroethylene autoclave, react at 190°C for 7h; cool to room temperature, Vacuum filtration and washing with deionized water, followed by vacuum drying to obtain the water hyacinth carbonaceous precursor. Take the above-mentioned water hyacinth carbon precursor and mix it with ferric chloride hexahydrate, add a certain amount of deionized water and sodium hydroxide solution, pour it into a polytetrafluoroethylene reactor, keep the temperature at 190°C for 7 hours, and then cool to room temperature Filter, wash and dry to obtain a magnetic adsorbent material.

Embodiment 3

[0018] The discarded water hyacinth was salvaged, washed, and vacuum-dried at 70°C for 24 hours. Weigh 6g of dried water hyacinth and 10g of zinc chloride, measure 40ml of deionized water, 20ml of NaOH solution, seal in a 100ml polytetrafluoroethylene autoclave, react at 200°C for 8h; cool to room temperature, Vacuum filtration and washing with deionized water, followed by vacuum drying to obtain the water hyacinth carbonaceous precursor. Take the above-mentioned water hyacinth carbonaceous precursor and mix it with ferric chloride hexahydrate, add a certain amount of deionized water and sodium hydroxide solution, pour it into a polytetrafluoroethylene reactor, keep the temperature at 200°C for 8 hours, and then cool to room temperature Filter, wash and dry to obtain a magnetic adsorbent material.

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Abstract

The invention discloses a method for preparing a magnetic adsorbing material by taking water hyacinth as a raw material. The method is mainly characterized by comprising the following steps: taking an expansion part of petiole of the water hyacinth as the raw material, and smashing the water hyacinth which is cleanly washed and dried, thus obtaining dry water hyacinth powder; uniformly mixing the dry water hyacinth powder with an activating agent, putting an obtained mixture in a reaction kettle for carbonizing, enabling the raw material to reach a setting temperature, and keeping constant temperature for a certain time, thus obtaining the magnetic adsorbing material. The magnetic adsorbing material prepared by adopting the method has a good structure and high stability, is high in quality and wide in application. According to the method disclosed by the invention, a new path is opened for resource utilization of the water hyacinth, and a waste-into-waste purpose is realized.

Description

technical field [0001] The invention relates to a method for preparing a magnetic adsorption material by using water hyacinth as a raw material. Background technique [0002] Water hyacinth (Water hyacinth, or water hyacinth), belongs to the family Hyacinthaceae, a perennial phytoplankton herb with a well-developed root system and hangs in the water. It is native to South America and was introduced into my country as livestock and poultry feed in the 1930s. . Later, it was found that it can purify water bodies, and a lot of progress has been made in its research on purifying aquaculture sewage and domestic sewage at home and abroad. [0003] Studies have shown that under certain conditions, water hyacinth grows rapidly, and its sewage purification efficiency is significantly better than that of ordinary aquatic plants. It can effectively remove nutrients such as nitrogen and phosphorus in water, reduce COD and BOD, absorb and enrich various heavy metals, toxic However, on t...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30
CPCB01J20/0229B01J20/0244B01J20/24B01J2220/4843
Inventor 白云翔赵伟张春芳
Owner JIANGNAN UNIV