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Acid-modified sepiolite bio-nanocomposite material loaded with microorganisms and its preparation method and application

A nano-composite material, bio-nano technology, applied in the treatment of phenol-contaminated aqueous solution, modified sepiolite and metal-organic framework composite materials and their preparation fields, can solve the secondary pollution recycling rate, high cost, secondary pollution Pollution and other issues, to achieve good low toxicity, high stability, easy to obtain effect

Active Publication Date: 2021-02-09
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the adsorption method is simple to operate, it is costly and accompanied by secondary pollution and low recycling rate. The same chemical method also has the problem of secondary pollution.

Method used

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  • Acid-modified sepiolite bio-nanocomposite material loaded with microorganisms and its preparation method and application
  • Acid-modified sepiolite bio-nanocomposite material loaded with microorganisms and its preparation method and application
  • Acid-modified sepiolite bio-nanocomposite material loaded with microorganisms and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The purification of embodiment one sepiolite, concrete steps are as follows:

[0048] First, the sepiolite raw material was added to deionized water to form a sepiolite suspension (20 g / L), followed by stirring for 24 hours, after which the above suspension was filtered and rinsed with deionized water three times. The powder obtained was dried at 105° C. for 2 hours, then sieved through a 60-mesh sieve, and the undersize was used for the following examples.

Embodiment 2

[0049] Embodiment two sepiolite acid activation, concrete steps are as follows:

[0050] Add HNO respectively to the treated sepiolite in Example 1 3 , HCl, H 2 SO 4 Acidification was carried out, the solid-to-liquid ratio of each acid was 1:15, and each acid activation was mechanically stirred at 348k for 24 hours. At the same time, during the three kinds of acid activation, after each acid activation, the precipitate obtained after filtration was washed with distilled water several times to remove the impurities attached to the surface of the sample and the solvent adsorbed on the surface, and dried at 393k for 3 Hours, the final sample obtained is acid-modified sepiolite.

[0051] After the activation of the three acids is completed, the acidified mixture is filtered,

[0052] figure 1 (a)-(d) are sepiolite after pretreatment, HCl activated sepiolite, HNO 3 Activated sepiolite and H 2 SO 4 Scanning electron microscope (SEM) of activated sepiolite. It can be seen fr...

Embodiment 3

[0053] The carboxylation of embodiment three acid-modified sepiolite, concrete steps are as follows:

[0054] Add the acid-activated sepiolite to 1mL KH550 solution, then add 30ml ethanol solution to the mixture, place it in a shaking bed for 8h, wash the product with ethanol and deionized water, and put it into 0.45g of p-benzene Diformic acid solution, and 30ml of DMF was added, also placed in a shaking bed for 8h, then taken out, washed with ethanol and deionized water three times, thus preparing carboxylated sepiolite.

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Abstract

The invention discloses an acid-modified sepiolite biological nanocomposite material loaded with microorganisms and its preparation method and application. The biological composite material disclosed by the invention has good adsorption and degradation capabilities for phenol pollutants, and can be used for Removal of harmful organic compounds. In addition, the present invention can realize the perfect combination of adsorption and biological treatment, give full play to the advantages of both, and completely remove organic pollutants.

Description

technical field [0001] The invention belongs to the field of preparation and application of nanometer materials, and in particular relates to modified sepiolite and metal-organic framework composite materials loaded with microorganisms, a preparation method thereof and application in treating phenol polluted aqueous solution. Background technique [0002] Recently, due to the rapid development of modern industry, various harmful organic compounds (such as antibiotics, pesticides and phenols) have been discharged into water resources, among which phenol occupies a large proportion, which has caused a lot of environmental problems and threaten human health. And with the rapid growth of urbanization and population, it becomes more and more important to explore more effective technologies and greener materials to protect our water resources, so how to deal with phenolic compounds has become a research hotspot. Technologies such as adsorption, chemical oxidation, and biological ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/10B01J20/30C02F1/28C02F3/34C02F101/34
CPCB01J20/10C02F1/28C02F3/34C02F2101/345
Inventor 路建美陈冬赟
Owner SUZHOU UNIV
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