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A method for purifying phenolic organic wastewater with cellulose/hectorite hybrid composite material

A composite material and cellulose technology, applied in chemical instruments and methods, water/sewage treatment, adsorption water/sewage treatment, etc., to achieve the effect of overcoming easy agglomeration, high removal rate, high removal rate and high adsorption capacity

Active Publication Date: 2020-09-22
温州慧思工业设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although there have been reports in the prior art that cellulose is used to treat wastewater, such as CN104710038A discloses a method of using cellulose-based flocculants to coagulate decolorized printing and dyeing wastewater, but it only plays the role of adsorbing colored substances, that is, chroma The removal rate has achieved good results, but in order to solve the colorless substances in the wastewater, such as phenolic substances
[0007] The use of hectorite and cellulose hybridization to remove phenolic substances in organic wastewater has not been reported in the literature

Method used

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  • A method for purifying phenolic organic wastewater with cellulose/hectorite hybrid composite material
  • A method for purifying phenolic organic wastewater with cellulose/hectorite hybrid composite material
  • A method for purifying phenolic organic wastewater with cellulose/hectorite hybrid composite material

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Experimental program
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Effect test

Embodiment 1

[0045] 1) Preparation of hectorite nanomaterials:

[0046]1-A) Dissolve 100mmol of lithium fluoride in 200ml of water, then add 400mmol of magnesium hydroxide, stir at 40-50°C for 2-3h to obtain the first mixed solution;

[0047] 1-B) the first mixed solution is added dropwise in the silica sol (being the SiO of 20%wt 2 water dispersion, SiO in water dispersion 2 The molar weight is 800mmol), stirred at 35-40°C to form a homogeneous mixture, then heated and refluxed for 16-18h to obtain a hectorite dispersion;

[0048] 1-C) Cool the hectorite dispersion to room temperature, centrifuge, collect the filter cake and place it in a toluene solution of 0.5% V oleic acid, ultrasonically disperse it at 80-90°C for 1-2 days, cool down, centrifuge, collect the filter cake The cake is heated to 150-180°C at a heating rate of 5°C / min in an air atmosphere, and finally heat-preserved and dried for 5-6 hours to obtain hectorite nanomaterials (hectorite nanomaterials are abbreviated as Nano...

Embodiment 1-A

[0056] Adopt single factor variable method to replace the cellulose acetate phthalate in embodiment 1 with cellulose acetate, promptly compare with embodiment 1, adopt the cellulose acetate of equal weight to replace cellulose acetate phthalate, all the other with The preparation method of Example 1 is completely consistent. The prepared cellulose / hectorite hybrid composite is defined as C / H.

Embodiment 2

[0058] For the hectorite nanomaterial (NanoH) prepared in Example 1, the cellulose acetate phthalate (AC) grafted with 2-acrylamide-2-methylpropanesulfonic acid, the cellulose / hectorite hybrid compound Material (AC / H) and C / H are the adsorbents to measure the removal rate of phenol at different pH values ​​R (initial concentration of phenol C 0 is 50mg / L, and the addition amount of adsorbent is 40mg / L), and its result is as shown in table 1:

[0059] Table 1 The removal rate R of different adsorbents to phenol at pH

[0060]

[0061] Note: "—" means no test; Front.Environ.Sci.Eng.2013,7(2):158-165,Removal of phenol by powdered activated carbon adsorption reported that coconut shell activated carbon has the maximum adsorption under the condition of pH=9.0 activity, so tests under other pH conditions were not performed.

[0062] The above results show that the cellulose / hectorite hybrid composite material (AC / H) prepared by the present invention has a stronger adsorption an...

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Abstract

The invention belongs to the technical field of water pollution prevention and control, and in particular relates to a method for purifying phenol-containing organic wastewater by a cellulose / hectorite hybrid composite material. The cellulose / hectorite hybrid composite material of the present invention is formed by ultrasonic hybridization of cellulose acetate phthalate grafted with 2-acrylamide-2-methylpropanesulfonic acid and hectorite in aqueous ethanol solution. The cellulose / hectorite hybrid composite material of the present invention can be used to remove phenol-containing substances in organic wastewater, has a high removal rate for phenol-containing substances, and has a much higher adsorption capacity than traditional activated carbon, and has industrial application prospects.

Description

technical field [0001] The invention belongs to the technical field of water pollution prevention and control, and in particular relates to a method for purifying phenol-containing organic wastewater by a cellulose / hectorite hybrid composite material. Background technique [0002] With the rapid development of industry, the types and quantities of wastewater have increased rapidly, and the pollution of water bodies has become increasingly widespread and serious, threatening human health and safety. There are many types of high-concentration organic wastewater, such as coking wastewater, pharmaceutical wastewater, textile / , printing and dyeing wastewater, petroleum / chemical wastewater, etc. Pharmaceutical wastewater usually contains aromatic amines, phenol, phenol homologues, polycyclic compounds such as naphthalene, anthracene, and benzopyrene, as well as cyanide, sulfide, and rhodanide. [0003] Phenol-containing wastewater is a typical type of organic wastewater. Because ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/34
CPCB01J20/12B01J20/24C02F1/288C02F2101/345
Inventor 贾玉臻谈彩花吴秀敏王凯
Owner 温州慧思工业设计有限公司
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