A performance regeneration method of porous adsorbent material after adsorbing malachite green

A porous adsorption material, malachite green technology, applied in separation methods, filter regeneration, chemical instruments and methods, etc., can solve the problems of less concern, adsorption and purification materials difficult to purify water, etc., achieve low-cost application, easy to spread The effect of promotion

Active Publication Date: 2020-01-17
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] People have always paid more attention to many indicators of the purification of adsorption materials, but less attention has been paid to the desorption indicators that affect the economy and direct cost of materials.
If the above technical problems cannot be solved well, it will be difficult for many seemingly good adsorption and purification materials to be successfully applied to the actual water purification on a large scale, let alone the purification of the huge area of ​​aquaculture water in our country.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Get 10 liters of water containing malachite green at a concentration of 5 mg / L, throw into 20 grams of garlic waste particle adsorption material, stir and contact the reaction for 60 minutes, separate and filter the garlic waste particle adsorption material that has adsorbed malachite green, and use 200 ml of 0.1 g of sodium sulfite solution was stirred and soaked. After 10 minutes, it was found that the original blue adsorbent particles returned to light white; after filtering and washing once, they were thrown into the above-mentioned adsorbed aqueous solution for a second time. It can be used for adsorption and purification of the next batch of malachite green aqueous solution after the same desorption and regeneration.

Embodiment 2

[0029] Get 10 liters of water containing malachite green at a concentration of 5 mg / L, throw into 20 grams of activated carbon particle adsorption material, stir and contact the reaction for 60 minutes, separate and filter the activated carbon particle adsorption material that has adsorbed malachite green, and dissolve it with 200 milliliters 0.5 grams of sodium sulfite solution is stirred and soaked, and after 10 minutes, the adsorption performance of activated carbon particles can be restored; after filtering and washing once, it is thrown into the above-adsorbed aqueous solution for secondary adsorption, and then desorbed and regenerated once again. It can be used for adsorption and purification of the next batch of malachite green aqueous solution.

Embodiment 3

[0031]Get 20 liters of water containing malachite green at a concentration of 5 mg / L, throw 30 grams of zeolite particle adsorption material into it, and after stirring and contacting for 120 minutes, separate and filter the zeolite particle adsorption material that has adsorbed malachite green, and dissolve it with 500 milliliters. There is 2.5 grams of sodium sulfite solution for stirring and soaking treatment. After 30 minutes, the zeolite particles can recover their adsorption properties; after filtering and washing once, throw them into the above-adsorbed aqueous solution for secondary adsorption, and then desorb and regenerate them once again , which can be used for adsorption and purification of the next batch of malachite green aqueous solution.

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Abstract

The invention mainly belongs to the technical field of pollution treatment of trace malachite green in a freshwater culture water body and in particular relates to a performance regeneration and recovery method of a porous adsorption material adsorbed with malachite green. The performance regeneration and recovery method comprises the following steps: collecting the porous adsorption material adsorbed and loaded with the malachite green to prepare a suspension solution; adding a reducing agent into the suspension solution in a solid form or a high-concentration solution form until the malachite green loaded on the porous adsorption material cannot be detected in a sampling and analysis process; then continually adding a certain amount of the reducing agent; after continually stirring for acertain time, filtering and removing surface water to obtain the regenerated porous adsorption material with recovered adsorption performance. According to the method provided by the invention, dyestuffs including the malachite green and the like, biologically adsorbed, adsorbed by active carbon, adsorbed by an inorganic mineral porous material and adsorbed by ion exchange resin, in the water body can be easily desorbed, so that the recovery and regeneration of performance of the porous adsorption material made of various materials are realized and the regenerated porous adsorption material is used for the next turn of adsorption and purification process.

Description

technical field [0001] The invention mainly belongs to the technical field of pollution treatment of trace amounts of malachite green in freshwater aquaculture water, and in particular relates to a performance regeneration method of a porous material for absorbing malachite green. Background technique [0002] China is the world's largest freshwater aquaculture country, and its aquaculture production ranks first in the world, accounting for 2 / 3 of the world's aquaculture production. China's aquaculture area is 5.75 million hectares, of which the freshwater aquaculture area is 4.41 million hectares. Guangdong, Hubei, Jiangsu, Hunan and Anhui are the main bases of freshwater aquaculture in China. Due to environmental pollution and human violations, there are often pollution problems in aquaculture water bodies, such as heavy metal pollution, antibiotic pollution, ammonia nitrogen eutrophication pollution, organic benzene compound pollution, etc., which will pose threats and r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/20B01J20/02B01J20/26B01J20/34C02F1/28C02F101/32
CPCB01J20/02B01J20/20B01J20/24B01J20/26B01J20/345B01J20/3475C02F1/281C02F1/283C02F1/285C02F1/286C02F2101/327C02F2303/16
Inventor 黄凯孙建刚汪智张扬忠陈兴杨宏
Owner UNIV OF SCI & TECH BEIJING
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