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Eichhornia crassipes adsorbing material and preparation method thereof

An adsorption material and technology of water hyacinth, applied in the field of water hyacinth adsorption material and its preparation

Active Publication Date: 2012-08-15
奚金明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even so, the preparation method of changing the surface properties of the adsorbent through the action of microorganisms has not been reported in the literature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] First, collect fresh water hyacinth, remove the roots and soak in a semi-open container containing a small amount of sodium thiosulfate to keep the dissolved oxygen in the water at 0.3mg / L, and then continuously add methanol and acetic acid solutions into the container , to make it produce hydrogen-producing and methanogenic bacteria, and change its surface properties; after maintaining the above-mentioned facultative oxygen state for 15 days, take out the nearly silted water hyacinth leaf, and dry it to constant weight under the condition of 103 ° C; Load it into a chromatography column, wash it repeatedly with acetic acid, fumaric acid, and ketoglutaric acid, and soak it in octadecyltrimethylammonium bromide solution; Carbonize at a temperature of 600°C, wait for 4 hours to cool to room temperature; finally, grind to obtain a polarized water hyacinth adsorption material rich in polyhydroxyl and polycarboxy functional groups.

[0019] Add 60mL of tannery wastewater con...

example 2

[0021] First, collect fresh water hyacinth, remove the roots and soak in a semi-open container containing a small amount of sodium thiosulfate to maintain the dissolved oxygen in the water at 0.5 mg / L, and then continuously add methanol and acetic acid solutions to the container , to make it produce hydrogen-producing and methanogenic bacteria, and change its surface properties; after maintaining the above-mentioned facultative oxygen state for 30 days, take out the nearly silted water hyacinth leaf, and dry it to constant weight under the condition of 110 ° C; Load it into a chromatography column, wash it repeatedly with acetic acid, fumaric acid, and ketoglutaric acid, and then soak it in octadecyltrimethylammonium bromide solution; Carbonize at a temperature of 800°C, wait for 5 hours to cool to room temperature; finally, grind to obtain a polarized water hyacinth adsorption material rich in polyhydroxyl and polycarboxy functional groups.

[0022] Add 50mL of industrial was...

example 3

[0024] First, collect fresh water hyacinth, remove the roots and soak in a semi-open container containing a small amount of sodium thiosulfate to keep the dissolved oxygen in the water at 0.4mg / L, and then continuously add methanol and acetic acid solutions into the container , to make it produce hydrogen-producing and methanogenic bacteria, and change its surface properties; after maintaining the above-mentioned facultative oxygen state for 24 days, take out the nearly silted water hyacinth leaf, and dry it to constant weight under the condition of 108 ° C; Load it into a chromatography column, wash it repeatedly with acetic acid, fumaric acid, and ketoglutaric acid, and then soak it in octadecyltrimethylammonium bromide solution; Carbonize at a temperature of 700°C, wait for 4 hours to cool to room temperature; finally, grind to obtain a polarized water hyacinth adsorption material rich in polyhydroxyl and polycarboxy functional groups.

[0025] Add 55mL of printing and dyei...

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Abstract

The invention discloses an eichhornia crassipes adsorbing material and a preparation method thereof. The preparation method comprises the following steps: firstly placing the fresh root-removal eichhornia crassipes into water containing sodium thiosulfate for soaking; continuously adding methyl alcohol and acetic acid in the above solution; preserving for 15-30 days; baking the eichhornia crassipes when the eichhornia crassipes is approximate to paste, placing the eichhornia crassipes into a chromatographic column; washing the eichhornia crassipes by acetic acid, fumaric acid and oxoglutarate, placing into an octadecyl trimethyl ammonium bromide solution for soaking; carbonizing under the protection of nitrogen and at the condition of high temperature; cooling to a room temperature; and finally grinding to obtain the adsorbing material. The adsorbent surface property is improved through a microbial action, so that the adsorbing material is rich in polyhydroxy and carboxyl compound; and the preparation method is novel and independent.

Description

technical field [0001] The invention relates to a water hyacinth adsorption material and a preparation method thereof, belonging to the field of material preparation. Background technique [0002] Water hyacinth, commonly known as water hyacinth and water floating lotus, is native to Brazil and grows in floating water or in soil. Its leaves are emerald green and deep, the stems and leaves hang over the water, the fibrous roots are well developed, and its reproductive ability is strong. When it covers the entire lake surface, it will hinder the photosynthesis of other plants and threaten the ecological balance. Even so, it is actually a good plant for beautifying the environment and purifying water. [0003] Usually, there are only several ways to modify the adsorption material, such as alkali bubble, acidification and temperature activation. The "Analysis of Adsorption Energy of Modified Straw Materials on Heavy Metals" proposed by Shenyang Institute of Applied Ecology, Ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30
Inventor 雷春生雷思宇虞静
Owner 奚金明
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