KFU. Card publication. Parameters of Household Wastewater Treatment Using Composite Membranes with a Surface Layer of Cellulose Acetate//Membranes and membrane technologies

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PARAMETERS OF HOUSEHOLD WASTEWATER TREATMENT USING COMPOSITE MEMBRANES WITH A SURFACE LAYER OF CELLULOSE ACETATE//MEMBRANES AND MEMBRANE TECHNOLOGIES

Form of presentation

Articles in Russian journals and collections

Year of publication

2021

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Authors, employees of KFU

Mavrin Gennadiy Vitalevich, author

Fazullin Dinar Dilshatovich, author

Fazullina Leysan Ildarovna, author

Other authors

Shaykhiev Ildar Gilmanovmch, author

Authors, students KFU

Shumilova Ekaterina Andreevna, author

Bibliographic description in the original language

Fazullin D.D.; Mavrin G.V; Dryakhlov V.O.; Fazullina L.I; Shaikhiev I.G.; Golovnina E.A./ Parameters of Household Wastewater Treatment Using Composite Membranes with a Surface Layer of Cellulose Acetate//Membranes and membrane technologies.– 2021.-T.3.- N6. – P419-425

Annotation

Composite membranes based on nylon and cellulose acetate (CA) are synthesized by immersing a microporous nylon substrate into a 3% CA solution in acetone. The CA content in the membrane is 12–53% depending on the number of deposited surface layers. The results of studying the properties of the composite membranes show that the water uptake and total porosity of the membranes decrease with an increase in the number of CA layers; this finding is attributed to the compaction of the membrane structure. In addition, it is revealed that the contact angle of the membrane increases by 6.4?; this means that the hydrophilic properties of the membrane decrease. The deposition of the surface layer of CA leads to the smoothing of the porous and rough surface of the nylon membrane base and a decrease in the porosity. Tests on household wastewater treatment using a nylon–CA3 composite nanofiltration membrane are conducted. It is found that the specific flux of the nylon–CA3 membrane with respect to wastewater is 39.7 dm3/(m2 h) at a pressure of 0.7 MPa. According to the results of the study, it is determined that the average degree of purification using the nylon–CA3 membrane is 64.5%. The nylon–CA3 membrane exhibits a high selectivity for multivalent ions (70%) and a high degree of purification in terms of COD and BOD5 (~92%), which is not inferior to the characteristics of a commercial nanofiltration membrane.

Keywords

nanofiltration, composite membrane, cellulose acetate, wastewater treatment

The name of the journal

MEMBRANES AND MEMBRANE TECHNOLOGIES

URL

https://www.pleiades.online/cgi-perl/search.pl?type=abstract&name=mmtech&number=6&year=21&page=419

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=261454&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Mavrin Gennadiy Vitalevich	ru_RU
dc.contributor.author	Fazullin Dinar Dilshatovich	ru_RU
dc.contributor.author	Fazullina Leysan Ildarovna	ru_RU
dc.contributor.author	Shaykhiev Ildar Gilmanovmch	ru_RU
dc.contributor.author	Shumilova Ekaterina Andreevna	ru_RU
dc.date.accessioned	2021-01-01T00:00:00Z	ru_RU
dc.date.available	2021-01-01T00:00:00Z	ru_RU
dc.date.issued	2021	ru_RU
dc.identifier.citation	Fazullin D.D.; Mavrin G.V; Dryakhlov V.O.; Fazullina L.I; Shaikhiev I.G.; Golovnina E.A./ Parameters of Household Wastewater Treatment Using Composite Membranes with a Surface Layer of Cellulose Acetate//Membranes and membrane technologies.– 2021.-T.3.- N6. – P419-425	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=261454&p_lang=2	ru_RU
dc.description.abstract	MEMBRANES AND MEMBRANE TECHNOLOGIES	ru_RU
dc.description.abstract	Composite membranes based on nylon and cellulose acetate (CA) are synthesized by immersing a microporous nylon substrate into a 3% CA solution in acetone. The CA content in the membrane is 12–53% depending on the number of deposited surface layers. The results of studying the properties of the composite membranes show that the water uptake and total porosity of the membranes decrease with an increase in the number of CA layers; this finding is attributed to the compaction of the membrane structure. In addition, it is revealed that the contact angle of the membrane increases by 6.4?; this means that the hydrophilic properties of the membrane decrease. The deposition of the surface layer of CA leads to the smoothing of the porous and rough surface of the nylon membrane base and a decrease in the porosity. Tests on household wastewater treatment using a nylon–CA3 composite nanofiltration membrane are conducted. It is found that the specific flux of the nylon–CA3 membrane with respect to wastewater is 39.7 dm3/(m2 h) at a pressure of 0.7 MPa. According to the results of the study, it is determined that the average degree of purification using the nylon–CA3 membrane is 64.5%. The nylon–CA3 membrane exhibits a high selectivity for multivalent ions (70%) and a high degree of purification in terms of COD and BOD5 (~92%), which is not inferior to the characteristics of a commercial nanofiltration membrane.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	nanofiltration	ru_RU
dc.subject	composite membrane	ru_RU
dc.subject	cellulose acetate	ru_RU
dc.subject	wastewater treatment	ru_RU
dc.title	Parameters of Household Wastewater Treatment Using Composite Membranes with a Surface Layer of Cellulose Acetate//Membranes and membrane technologies	ru_RU
dc.type	Articles in Russian journals and collections	ru_RU