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Novel composite membrane based on BILP-101x as well as preparation method and application thereof

A composite membrane, a new type of technology, applied in chemical instruments and methods, membranes, membrane technology, etc., can solve problems such as hindering the penetration of divalent salts, unable to effectively separate dye/salt mixed solutions, etc., to inhibit bacterial growth and improve processing capacity. , the effect of prolonging the service life

Active Publication Date: 2021-07-13
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of ultra-thin composite membranes has shown the potential to purify dye wastewater, the general ultra-thin composite membranes are over-crosslinked films, which seriously hinder the penetration of divalent salts, resulting in the inability to effectively separate dye / salt mixed solutions.

Method used

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  • Novel composite membrane based on BILP-101x as well as preparation method and application thereof
  • Novel composite membrane based on BILP-101x as well as preparation method and application thereof
  • Novel composite membrane based on BILP-101x as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A novel composite membrane based on BILP-101x, the preparation process is as follows:

[0034] 1) Basement membrane hydrolysis: Before using the basement membrane, soak the PAN membrane in NaOH aqueous solution (2mol / L, 25°C) for 2 hours to hydrolyze the PAN membrane; then rinse the obtained hydrolyzed PAN membrane (HPAN) completely with deionized water to neutral, placed in deionized water for later use;

[0035] 2) Configuration of the reaction monomer solution: add 1,2,4,5-benzenetetramine tetrahydrochloride (0.0625g) into 25mL deionized water and stir for 15min at room temperature to obtain a concentration of 0.25wt%. Aqueous phase solution A; 1,3,5-triformoylbenzene (0.0275g) was dissolved in 25ml of benzene solvent at room temperature and dissolved completely by ultrasound to obtain an oil phase solution B with a mass percent concentration of 0.11wt%;

[0036] 3) The preparation process such as figure 1 As shown, the HPAN base membrane was first cut into a circl...

Embodiment 2

[0038]In step 2), change the quality of 1,2,4,5-benzenetetramine tetrahydrochloride to 0.125g, and the quality of 1,3,5-triformylbenzene to 0.055g, and the others are the same as in Example 1. An aqueous phase solution A with a mass percent concentration of 0.50 wt % and an oil phase solution B with a mass percentage concentration of 0.22 wt % were respectively obtained.

Embodiment 3

[0040] In step 2), the quality of 1,2,4,5-benzenetetramine tetrahydrochloride was changed to 0.1875g, the quality of 1,3,5-triformylbenzene was changed to 0.0825g, and the others were the same as in Example 1. An aqueous phase solution A with a mass percent concentration of 0.75 wt % and an oil phase solution B with a mass percentage concentration of 0.33 wt % were respectively obtained.

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Abstract

The invention belongs to the technical field of dye/salt wastewater treatment, and particularly relates to a novel composite membrane based on BILP-101x as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving an aqueous solution of 1, 2, 4, 5-benzenetetramine tetrahydrochloride and a solution of 1, 3, 5-triformyl benzene dissolved in an organic solvent, and carrying out interfacial polymerization reaction to obtain the novel composite membrane. The novel composite membrane disclosed by the invention can realize high-efficiency and high-flux separation of dye wastewater, has excellent desalting capacity, and meanwhile, by utilizing the antibacterial capacity of BILP-101x, the ultrathin composite membrane has the capacity of inhibiting growth of bacteria on the surface of the membrane, so that the service life of the membrane is generally prolonged, and the sewage treatment capacity of the membrane is increased.

Description

technical field [0001] The invention belongs to the technical field of dye / salt wastewater treatment, in particular to a novel composite membrane based on BILP-101x and its preparation method and application. Background technique [0002] Water pollution is not only one of the global risk factors leading to people's health problems, but also leads to a continuous decrease in drinking water consumption. Among them, dye wastewater is one of the important sources of water pollution. Not only is most dye wastewater toxic and non-biodegradable, but it even consumes a large amount of dissolved oxygen that is essential to aquatic organisms. At the same time, a large amount of inorganic salts (such as NaCl and Na 2 SO 4 ), increasing the difficulty of treating dye wastewater. For the purification and reuse of salt-containing dye wastewater, the development of new thin film materials with excellent performance has aroused people's widespread interest. Although the use of ultra-th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/12B01D67/00B01D69/02C02F1/44B01D71/42C08J7/16C02F101/30C02F101/10C08L33/20
CPCB01D69/125B01D69/02B01D67/0002C02F1/44B01D71/42C08J7/16C02F2101/308C02F2101/10B01D2325/48C08J2333/20Y02A20/131
Inventor 张亚涛田陈单美霞朱军勇王景董冠英
Owner ZHENGZHOU UNIV
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