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Multicomponent bacterial cellulose composite filter film as well as preparation method and application thereof

The technology of bacterial cellulose membrane and bacterial cellulose is applied in the field of multi-component bacterial cellulose composite filter membrane and its preparation, which can solve the problems that powder nanomaterials are not easy to recover, and it is difficult to load nanoparticles in large quantities, and achieves easy recovery, Contaminant-synchronized, high-performance effects

Active Publication Date: 2021-09-17
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention solves the problem that the composite filter membrane prepared by the in-situ growth method is difficult to load a large amount of nanoparticles, overcomes the disadvantage that the powder nanomaterials are not easy to recycle, and can comprehensively exert the adsorption properties of the nanoparticles of each component, realizing the complex pollution of water bodies Simultaneous and efficient removal of multiple pollutants in

Method used

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  • Multicomponent bacterial cellulose composite filter film as well as preparation method and application thereof
  • Multicomponent bacterial cellulose composite filter film as well as preparation method and application thereof
  • Multicomponent bacterial cellulose composite filter film as well as preparation method and application thereof

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preparation example Construction

[0030] A preparation method for multicomponent bacterial cellulose composite filter membrane, comprising the following steps:

[0031] Step 1, cutting the entire bacterial cellulose film purchased through commercial means into small pieces, and then breaking the cut bacterial cellulose film into short-fiber bacterial cellulose slurry; wherein, every 1g of the bacterial cellulose After the slurry was sufficiently dried, 3.36 mg of dry bacterial cellulose could be obtained.

[0032] Step 2, the metal organic framework material UiO-66 powder, metal organic framework material MIL-88B powder, MoS 2 Powder, MnO 2 Powder, MgO powder, and the bacterial cellulose slurry are mixed together, and fully stirred evenly, and then vacuum filtration is directly performed without adding a flocculant, thereby preparing a wet multi-component bacterial cellulose composite filter membrane (the Multi-component bacterial cellulose composite filter membrane containing UiO-66, MIL-88B, MoS 2 , MnO ...

Embodiment 1

[0051] A kind of multi-component bacterial cellulose composite membrane, its preparation method comprises the following steps:

[0052] Step A, cutting the whole bacterial cellulose membrane purchased by commercial means into 2mm (long) * 2mm (wide) * 2mm (high) bacterial cellulose membrane fragments, then cutting the bacterial cellulose membrane fragments Use a high-speed crusher to crush to obtain a uniform bacterial cellulose slurry; 3.36 mg of dried bacterial cellulose can be obtained after every 1 g of the bacterial cellulose slurry is fully dried.

[0053] Step B, UiO-66 powder, MIL-88B powder, MoS 2 Powder, MnO 2 Synthesis of powder and MgO powder: 0.45mmol ZrCl 4 , 0.45mmol terephthalic acid and 4.5mmol acetic acid were dissolved in 30mL DMF, hydrothermally reacted at 120°C for 24h, washed with DMF and ethanol, and dried in vacuum at 60°C to obtain UiO-66 powder. 1mmol FeCl 3 ·6H 2 O and 1 mmol of terephthalic acid were dissolved in 10 mL of DMF, and then 2 mL of ...

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Abstract

The invention discloses a multicomponent bacterial cellulose composite filter film and a preparation method and application thereof, and the preparation method comprises the following steps: crushing a bacterial cellulose film to prepare bacterial cellulose slurry; and mixing UiO-66 powder, MIL-88B powder, MoS2 powder, MnO2 powder, MgO powder and the bacterial cellulose slurry together, and carrying out vacuum filtration, so as to obtain the wet multicomponent bacterial cellulose composite filter film. The multicomponent bacterial cellulose composite filter film can be used as an adsorbent for removing phosphate, arsenate, mercury ions, bisphenol A, lead ions and cadmium ions in a water body. The problem that a composite filter film prepared by an in-situ growth method is difficult to load a large number of nano particles is solved, the defect that a powder nano material is difficult to recycle is overcome, the adsorption performance of the nano particles of each component can be comprehensively exerted, and synchronous and efficient removal of various pollutants in the combined polluted water body is realized.

Description

technical field [0001] The invention relates to the technical field of water body pollutant removal, in particular to a multi-component bacterial cellulose composite filter membrane and its preparation method and application. Background technique [0002] Water pollution has become one of the hot issues of global concern. However, in the actual polluted water bodies, most of them are complex pollutions in which multiple pollutants coexist. The physical, chemical and biological processes of the coexisting pollutants make the problem of water pollution more complicated, and pose a serious threat to the entire ecosystem and public health. serious threat. [0003] For various water pollutants, powder adsorbent materials exhibit excellent adsorption performance, but they need high-speed centrifugation to separate them, which increases the risk of secondary pollution. Loading these powder materials on filter membranes can effectively solve practical problems, but these membrane ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D69/02B01D69/12B01D71/10B01J20/24B01J20/28B01J20/30C02F1/28C02F1/44C02F101/10C02F101/20C02F101/34
CPCB01D67/0079B01D69/12B01D71/10B01D69/02C02F1/288C02F1/44B01J20/226B01J20/24B01J20/0285B01J20/0218B01J20/06B01J20/28038B01D2325/12C02F2101/103C02F2101/105C02F2101/20C02F2101/345
Inventor 张云霞顾悦刘文文汪国忠张海民
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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