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A method for treating phenol wastewater by adsorption method and pH-sensitive adsorbent

A technology of adsorbent and adsorption method, which is applied in the field of adsorption method to treat phenol wastewater, which can solve the problems of long operation time, affecting the promotion of engineering application, and large consumption of reagents, etc., and achieves the effect of high adsorption rate

Active Publication Date: 2019-12-10
泰州龙谷信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the problem existing in the use of this kind of adsorbent is that the regeneration of the adsorbent is difficult, and there are problems of long operation time and large reagent consumption when regenerating the adsorbent to the process of adsorption, which affects its engineering application. to promote

Method used

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  • A method for treating phenol wastewater by adsorption method and pH-sensitive adsorbent
  • A method for treating phenol wastewater by adsorption method and pH-sensitive adsorbent
  • A method for treating phenol wastewater by adsorption method and pH-sensitive adsorbent

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Experimental program
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Effect test

Embodiment 1

[0033] The preparation method of adsorbent, comprises the steps:

[0034] Step 1, by weight, take 6 parts of cetyltrimethylammonium bromide (CTAB), add to 550 parts of deionized water, stir and dissolve, then add 90 parts of ethylene glycol and 35 parts of triethanolamine , mix evenly; then add 40 parts of tetrabutyl titanate (TBOT) to carry out the hydrolysis reaction at elevated temperature, the temperature of the hydrolysis reaction is 65°C, and the reaction time is 4h. After the reaction, the product is centrifuged and washed with ethanol and water in turn Finally, the powder is added to 850 parts of acidic ethanol solution. The acidic ethanol solution is formed by mixing concentrated hydrochloric acid and ethanol according to a volume ratio of 1:15. , the heating and reflux temperature is 75°C, and the reflux time is 3 hours. The powder is centrifuged, washed with water, and vacuum-dried to obtain mesoporous titanium oxide particles;

[0035] Step 2, in parts by weight, ...

Embodiment 2

[0042] The preparation method of adsorbent, comprises the steps:

[0043] Step 1, in parts by weight, take 3 parts of cetyltrimethylammonium bromide (CTAB), add it to 400 parts of deionized water, stir and dissolve, then add 80 parts of ethylene glycol and 20 parts of triethanolamine , mix evenly; then add 30 parts of tetrabutyl titanate (TBOT) to carry out the hydrolysis reaction at elevated temperature, the temperature of the hydrolysis reaction is 55°C, and the reaction time is 1h. After the reaction, the product is centrifuged and washed with ethanol and water in turn Finally, add the powder to 800 parts of acidic ethanol solution. The acidic ethanol solution is formed by mixing concentrated hydrochloric acid and ethanol at a volume ratio of 1:12. , the heating and reflux temperature is 70°C, the reflux time is 1h, the powder is centrifuged, washed with water, and vacuum-dried to obtain mesoporous titanium oxide particles;

[0044] Step 2, in parts by weight, take 10 part...

Embodiment 3

[0048] The preparation method of adsorbent, comprises the steps:

[0049] Step 1, in parts by weight, take 5 parts of cetyltrimethylammonium bromide (CTAB), add it to 450 parts of deionized water, stir and dissolve, then add 85 parts of ethylene glycol and 25 parts of triethanolamine , mix evenly; then add 35 parts of tetrabutyl titanate (TBOT) to carry out the hydrolysis reaction at elevated temperature, the temperature of the hydrolysis reaction is 60°C, and the reaction time is 2h. After the reaction, the product is centrifuged and washed with ethanol and water in turn Finally, add the powder to 12 parts of acidic ethanol solution. The acidic ethanol solution is formed by mixing concentrated hydrochloric acid and ethanol according to the volume ratio of 1:13. The concentration of the concentrated hydrochloric acid is 28wt%, and the template is removed by heating , the heating and reflux temperature is 72°C, and the reflux time is 2 hours. The powder is centrifuged, washed w...

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Abstract

The present invention relates to a method for treating phenol wastewater through an adsorption method, and a pH sensitive adsorbent, and belongs to the technical field of water treatment. According to the present invention, the adsorbent uses mesoporous titania as a carrier, magnetic Fe3O4 is modified on the surface, and pH-sensitive PMMA is modified on the adsorbent, such that the material has the high adsorption rate in the alkaline condition, can rapidly release the adsorbed phenol under the acidic condition, can degrade the phenol by using the photocatalytic effect of titanium dioxide, and can achieve the regeneration of the adsorbent.

Description

technical field [0001] The invention relates to a method for treating phenol wastewater by an adsorption method and a pH-sensitive adsorbent, belonging to the technical field of water treatment. Background technique [0002] Phenolic wastewater mainly comes from chemical enterprises such as petrochemical plants, resin plants, plastic plants, synthetic fiber plants, oil refineries, and coking plants. It is one of the important pollutants in water bodies. Due to different industrial categories, product types and process conditions, the wastewater composition and phenolic concentration vary greatly. It is generally divided into acidic, alkaline, neutral phenolic wastewater and volatile and non-volatile phenolic wastewater. [0003] Phenolic compounds are a kind of protoplasmic poisons. All biologically active substances can produce toxicity. They can directly enter the blood circulation through contact with the skin and mucous membranes without detoxification by the liver, cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30B01J20/34C02F1/28C02F1/32C02F101/34
CPCB01J20/264B01J20/28009B01J20/3441C02F1/285C02F1/32C02F2101/345
Inventor 王维根
Owner 泰州龙谷信息科技有限公司
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