CN106390770A - Preparation method of dopamine composite ultrafiltration membrane - Google Patents

Preparation method of dopamine composite ultrafiltration membrane Download PDF

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Publication number
CN106390770A
CN106390770A CN201611123068.4A CN201611123068A CN106390770A CN 106390770 A CN106390770 A CN 106390770A CN 201611123068 A CN201611123068 A CN 201611123068A CN 106390770 A CN106390770 A CN 106390770A
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membrane
deionized water
isopropanol
preparation
film
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CN201611123068.4A
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Chinese (zh)
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张俊
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Shaanxi Yiyang Technology Co Ltd
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Shaanxi Yiyang Technology Co Ltd
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Priority to CN201611123068.4A priority Critical patent/CN106390770A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0093—Chemical modification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
    • B01D71/60—Polyamines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
    • B01D71/68—Polysulfones; Polyethersulfones
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/36—Hydrophilic membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/48—Antimicrobial properties
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/14—NH3-N

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention relates to a preparation method of a dopamine composite ultrafiltration membrane. The preparation method of the dopamine composite ultrafiltration membrane is characterized by comprising the following steps: washing polysulfone-based membrane thoroughly with deionized water; soaking in clean deionized water for 24 h; washing the soaked polysulfone-based membrane with the deionized water so as to remove the remaining soaking solution on the membrane; then soaking in isopropanol for 2 to 5 h; shaking-washing the soaked polysulfone-based membrane in the isopropanol for 1h, wherein the isopropanol treatment can remove both bacteria generated on the membrane and membrane preparation materials remaining on the surface or in the aperture gap of the membrane. The prepared dopamine composite ultrafiltration membrane has a contact angle of 63 degree which is reduced by 21 degree compared with the contact angle of basement-membrane, the hydrophilicity is significantly enhanced, and the treatment effect on mariculture wastewater is good.

Description

A kind of preparation method of dopamine composite hyperfiltration membrane
Technical field
The present invention relates to a kind of preparation method of dopamine composite hyperfiltration membrane.
Background technology
In recent years, with the fast development of aquaculture, seawater industrial culturing sharply increases in scale and quantity.Sea water If wastewater of industrial cultivation cannot discharge after effective process, pollution will necessarily be produced to Adjacent Sea Area water body.At present, process sea The method of water breeding wastewater mainly has Physical, chemical method and bioanalysises etc., the main float (SS) removing in waste water, ammonia Nitrogen, COD (COD), BOD (BOD) etc., the requirement being recycled with reaching or discharging.For sea-farming The feature of waste water, these methods all come with some shortcomings：Physical can remove oil removal, but to some deliquescent pollutant Cannot remove well；Chemical method is better than Physical to the removal effect of dissolubility pollutant, but its processing cost is relatively High；Because seawater salinity is too high, efficiency reduces substantially bioanalysises.Compared with traditional marine culture wastewater processing method, membrane technology There is the advantages of convenient operation and management, efficiency high, the deficiency that traditional handicraft processes marine culture wastewater can be made up, but membrane technology should With in membrane pollution problem have impact on its popularization and application.For slowing down the pollution of film, Mohammad etc. (2012) from membrane material modified, Hydrodynamics optimization, 3 aspects of Membrane cleaning summarize the measure of ultrafiltration membrane treatment aquiculture waste water fouling membrane.Chen etc. utilizes Phase inversion is obtained polyacrylonitrile (PAN)-B- Polyethylene Glycol (PEG) copolymer ultrafilter membrane, has more preferable anti-soil than PAN ultrafilter membrane Dye ability.
Research find, in marine animal mussel secretions the Functional Unit of adhesion protein left-handed -3,4-dihydroxyphenyl-L-alanine (L-DOPA, DOPA) and its catechol derivatives 3,4- dihydroxy phenylpropyl alcohol ammonia (Dopamine, dopamine), can be under given conditions Spontaneous polymerization, is strongly attached to material surface.This marine animal extract not only has a large amount of hydrophilic radicals, also has The characteristic of antibiont attachment in sea water.
At present, the research to this field is paid much attention to both at home and abroad, and DOPA (amine) autohemagglutination complex technique becomes solid material The study hotspot of surface modification, is mainly used in multifunctional bionic medicine, biomolecule surface coating and surface antibiont and processes In field.Additionally, poly- DOPA (dopamine) layer can also give ultrafiltration membranes with loose nanofiltration membrane pore structure feature, thus improving Removal efficiency to indexs such as COD in water body.
Content of the invention
The present invention proposes a kind of preparation method of dopamine composite hyperfiltration membrane.
A kind of preparation method of dopamine composite hyperfiltration membrane, including following preparation process：
（1）Polysulfones basement membrane deionized water is fully rinsed, and puts into and soaks 24h in the deionized water of cleaning；
（2）Polysulfones basement membrane deionized water after soaking is rinsed, washes away the soak of residual on film；
（3）Put into immersion 2-5h in isopropanol, oscillation cleaning 1h in isopropanol afterwards, isopropanol processes and can go to grow in membrane removal Raw antibacterial and the masking raw material remaining in film surface or membrane pores；
（4）Isopropanol is washed away by deionized water completely again, put into soak in deionized water stand-by；
（5）Polysulfones basement membrane after deionized water is soaked is cut into reaction tank size, puts in film reaction pond, adds 2g/L DOPA Amine aqueous solution 50ml, rapid capping pond is put in shaken cultivation case, and 12h is soaked in vibration at 35-42 DEG C；
（6）Coated composite membrane is taken out from reaction tank, is washed with deionized water the coating liquid of striping remained on surface, uses defat Cotton gently wipes composite bed, and the dopamine molecule not being aggregated in film surface is washed off；
（7）After fully cleaning, film is put in deionized water, oscillation cleaning 24h, every 6h changes water during oscillation cleaning；
（8）After oscillation cleaning finishes, film is cleaned by ultrasonic after 4s and reuses.
Preferably, step（2）Soak time be 2h.
Preferably, step（5）Vibration soaking temperature is 37 DEG C.
Its contact angle of dopamine composite hyperfiltration membrane of the method for the invention preparation is 63 °, reduces 21 ° compared with basement membrane, hydrophilic Property significantly increase, good to the treatment effect of marine culture wastewater, SS clearance reaches 100%, COD clearance and reaches 83.26%, right Ammonia nitrogen in marine culture wastewater has removal effect, clearance 15.78%.Breeding wastewater after this membrance separation enters further Row ozone oxidation etc. is processed after removing ammonia nitrogen, and its main water quality index can reach Equations of The Second Kind sea water quality standard, after process Sea-farming water can reach the requirement that industrialized culture recycles.
Specific embodiment
Embodiment 1.
A kind of preparation method of dopamine composite hyperfiltration membrane, including following preparation process：
（1）Polysulfones basement membrane deionized water is fully rinsed, and puts into and soaks 24h in the deionized water of cleaning；
（2）Polysulfones basement membrane deionized water after soaking is rinsed, washes away the soak of residual on film；
（3）Put into immersion 2-5h in isopropanol, oscillation cleaning 1h in isopropanol afterwards, isopropanol processes and can go to grow in membrane removal Raw antibacterial and the masking raw material remaining in film surface or membrane pores；
（4）Isopropanol is washed away by deionized water completely again, put into soak in deionized water stand-by；
（5）Polysulfones basement membrane after deionized water is soaked is cut into reaction tank size, puts in film reaction pond, adds 2g/L DOPA Amine aqueous solution 50ml, rapid capping pond is put in shaken cultivation case, and 12h is soaked in vibration at 35-42 DEG C；
（6）Coated composite membrane is taken out from reaction tank, is washed with deionized water the coating liquid of striping remained on surface, uses defat Cotton gently wipes composite bed, and the dopamine molecule not being aggregated in film surface is washed off；
（7）After fully cleaning, film is put in deionized water, oscillation cleaning 24h, every 6h changes water during oscillation cleaning；
（8）After oscillation cleaning finishes, film is cleaned by ultrasonic after 4s and reuses；
（9）Step（2）Soak time be 2h.
Embodiment 2.
A kind of preparation method of dopamine composite hyperfiltration membrane, including following preparation process：
（1）Polysulfones basement membrane deionized water is fully rinsed, and puts into and soaks 24h in the deionized water of cleaning；
（2）Polysulfones basement membrane deionized water after soaking is rinsed, washes away the soak of residual on film；
（3）Put into immersion 2-5h in isopropanol, oscillation cleaning 1h in isopropanol afterwards, isopropanol processes and can go to grow in membrane removal Raw antibacterial and the masking raw material remaining in film surface or membrane pores；
（4）Isopropanol is washed away by deionized water completely again, put into soak in deionized water stand-by；
（5）Polysulfones basement membrane after deionized water is soaked is cut into reaction tank size, puts in film reaction pond, adds 2g/L DOPA Amine aqueous solution 50ml, rapid capping pond is put in shaken cultivation case, and 12h is soaked in vibration at 35-42 DEG C；
（6）Coated composite membrane is taken out from reaction tank, is washed with deionized water the coating liquid of striping remained on surface, uses defat Cotton gently wipes composite bed, and the dopamine molecule not being aggregated in film surface is washed off；
（7）After fully cleaning, film is put in deionized water, oscillation cleaning 24h, every 6h changes water during oscillation cleaning；
（8）After oscillation cleaning finishes, film is cleaned by ultrasonic after 4s and reuses；
（9）Step（2）Soak time be 2h；
（10）Step（5）Vibration soaking temperature is 37 DEG C.

Claims (3)

1. a kind of preparation method of dopamine composite hyperfiltration membrane is it is characterised in that include following preparation process：
（1）Polysulfones basement membrane deionized water is fully rinsed, and puts into and soaks 24h in the deionized water of cleaning；
（2）Polysulfones basement membrane deionized water after soaking is rinsed, washes away the soak of residual on film；
（3）Put into immersion 2-5h in isopropanol, oscillation cleaning 1h in isopropanol afterwards, isopropanol processes and can go to grow in membrane removal Raw antibacterial and the masking raw material remaining in film surface or membrane pores；
（4）Isopropanol is washed away by deionized water completely again, put into soak in deionized water stand-by；
（5）Polysulfones basement membrane after deionized water is soaked is cut into reaction tank size, puts in film reaction pond, adds 2g/L DOPA Amine aqueous solution 50ml, rapid capping pond is put in shaken cultivation case, and 12h is soaked in vibration at 35-42 DEG C；
（6）Coated composite membrane is taken out from reaction tank, is washed with deionized water the coating liquid of striping remained on surface, uses defat Cotton gently wipes composite bed, and the dopamine molecule not being aggregated in film surface is washed off；
（7）After fully cleaning, film is put in deionized water, oscillation cleaning 24h, every 6h changes water during oscillation cleaning；
（8）After oscillation cleaning finishes, film is cleaned by ultrasonic after 4s and reuses.
2. as claimed in claim 1 a kind of preparation method of dopamine composite hyperfiltration membrane it is characterised in that step（2）Immersion when Between be 2h.
3. as claimed in claim 1 a kind of preparation method of dopamine composite hyperfiltration membrane it is characterised in that step（5）Vibration is soaked Temperature is 37 DEG C.
CN201611123068.4A 2016-12-08 2016-12-08 Preparation method of dopamine composite ultrafiltration membrane Pending CN106390770A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106823831A (en) * 2017-03-03 2017-06-13 哈尔滨工业大学 A kind of preparation method and application of organic catalysis film
CN106964266A (en) * 2017-04-04 2017-07-21 方家铺子（福建）海洋生物科技有限公司 Preparation method for the dopamine composite hyperfiltration membrane of marine culture wastewater processing
CN107158959A (en) * 2017-06-20 2017-09-15 天津大学 A kind of superoleophobic porous composite film preparation method of super-hydrophilic and underwater
CN107162177A (en) * 2017-06-09 2017-09-15 天津碧水源膜材料有限公司 Ventilated membrane, diaphragm, reactor and sewage water filtration technique
CN110743371A (en) * 2019-11-20 2020-02-04 哈尔滨工业大学（威海） Preparation method of grafted hydrophilic polymer bionic ultrafiltration membrane

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106823831A (en) * 2017-03-03 2017-06-13 哈尔滨工业大学 A kind of preparation method and application of organic catalysis film
CN106964266A (en) * 2017-04-04 2017-07-21 方家铺子（福建）海洋生物科技有限公司 Preparation method for the dopamine composite hyperfiltration membrane of marine culture wastewater processing
CN107162177A (en) * 2017-06-09 2017-09-15 天津碧水源膜材料有限公司 Ventilated membrane, diaphragm, reactor and sewage water filtration technique
CN107158959A (en) * 2017-06-20 2017-09-15 天津大学 A kind of superoleophobic porous composite film preparation method of super-hydrophilic and underwater
CN110743371A (en) * 2019-11-20 2020-02-04 哈尔滨工业大学（威海） Preparation method of grafted hydrophilic polymer bionic ultrafiltration membrane

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Application publication date: 20170215