مورد إلكتروني

Simultani uticaj energije površine vlakana, geometrije sloja i prirode uljne faze na obradu zauljenih voda koalescentnom filtracijom

التفاصيل البيبلوغرافية
العنوان: Simultani uticaj energije površine vlakana, geometrije sloja i prirode uljne faze na obradu zauljenih voda koalescentnom filtracijom
المصدر: Универзитет у Новом Саду
بيانات النشر: Универзитет у Новом Саду, Технолошки факултет 2017-02-01
تفاصيل مُضافة: Vulić, Tatjana
Sokolović, Dunja
Veljković, Vlada
Jokić, Aleksandar
Govedarica, Dragan
Kiralj, Arpad
نوع الوثيقة: Electronic Resource
مستخلص: Cilj istraživanja doktorske disertacije je bio ispitivanje mogućnosti primene vlakana od nerđajućeg čelika za koalescenciju kapi mineralnih ulja različite polarnosti pri različitoj permeabilnosti sloja. Pored toga cilj je bio i komparativna analiza efikasnosti separacije ispitivanih ulja vlaknima visoke i niske energije površine. Postavljena je i modifikovana metoda kinetike upijanja tečnosti za ocenu sklonosti ulja ka odabranim vlaknima od kojih se formira sloj. Po prvi put je primenjena i metoda veštačkih neuronskih mreža za simulaciju koalescentne filtracije. Eksperimentalni program koalescentne filtracije je realizovan na model emulziji dispergovanog ulja u vodi konstantne ulazne koncentracije 500 mg/l, pri konstantnoj temperaturi od 20°C, horizontalnoj orijentaciji toka fluida i prosečnoj veličini kapi ulja od 10 μm. Uticaj geometrije sloja ispitivan je variranjem permeabilnosti u opsegu od 0,1810-9 m2 do 5,510-9 m2 za konstantnu debljinu sloja od 5 cm. Testirana su tri uzorka mineralnog ulja velikog raspona viskoznosti i polarnosti. Svi ogledi su realizovani pri konstantnoj brzini fluida u intervalu od 10 m/h do 80 m/h. Izlazna koncentracija dispergovane faze odredivana je FTIR spektrofotometrijom. Značajan doprinos u istraživanju fenomena koalescencije u sloju vlakana ogleda se u utvrdivanju mogućnosti primene vlakana nerdajućeg čelika na separaciju kapi mineralnih ulja, razumevanju simultanog uticaja energije površine, geometrije sloja i prirode uljne faze, kao i uvodenju nove veličine izo-izlazne koncentracije. Test odredivanja kinetike upijanja tečnosti je pokazao da odnos liofilno-liofobne kvašljivosti materijala adekvatno opisuje sklonost nekog filtarskog materijala ka separaciji ulja mineralnog porekla. Ovako sveobuhvatna analiza uticaja različitih parametara na efikasnost koalescentne filtracije, data u ovoj disertaciji, nije zabeležena u dostupnim literaturnim navodima. Rezultati doktorske disertacije omogući će skraćivanje vremena i materijalnih troš
The aim of the doctoral thesis was to investigate the possibility of the stainless steel fibers application for the coalescence of mineral oil drops with different polarity varying also the bed permeability. Additional aim was the comparative analysis of the tested oil separation efficiency with fibers that have high and low surface energy. The method for the evaluation of the fiber-liquid wetting kinetic was set up and modified in order to assess the affinity of oil to the selected fiber that was used to form the filtration bed. For the first time, the method of artificial neural networks was applied to simulate the coalescence filtration. Experimental program of coalescence filtration was performed on oil-in-water model emulsion with constant inlet concentration of 500 mg/l, at a constant temperature of 20°C, horizontal fluid flow orientation and average oil drop size of 10 μm. The influence of bed geometry was studied varying bed permeability in the range from 0,1810-9 m2 to 5,51010-9 m2 for the constant layer thickness of 5 cm. Three samples of mineral oil that have large range of viscosity and polarity were tested. All experiments were carried out at constant fluid velocity in the range from 10 m/h to 80 m/h. The output dispersed phase concentration was determined by FTIR spectrophotometry. A significant contribution to the research of the coalescence phenomenon in a fiber bed was achieved by determining the possibility to use stainless steel fibers for the separation of mineral oil drops, broadening the apprehension of the simultaneous influence of surface energy, bed geometry and oil phase nature, as well as the introduction of an iso-output concentration as a new parameter. The evaluation of the fiber-liquid wetting kinetic showed that the lipophilic-lyophobic wettability ratio of the material adequately describes the tendency of a filter material for the mineral oil separation. Such comprehensive analysis of the various parameters impact on the efficiency o
مصطلحات الفهرس: Koalescencija, vlaknasti sloj, materijal visoke i niske energije površine, Coalescence, fiber bed, material of high and low surface energy, doctoralThesis
URL: http://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija147945600535451.pdf?controlNumber=(BISIS)102460&fileName=147945600535451.pdf&id=7049&source=NaRDuS&language=sr
http://www.cris.uns.ac.rs/record.jsf?recordId=102460&source=NaRDuS&language=sr
http://www.cris.uns.ac.rs/DownloadFileServlet/IzvestajKomisije147945601701333.pdf?controlNumber=(BISIS)102460&fileName=147945601701333.pdf&id=7050&source=NaRDuS&language=sr
http://nardus.mpn.gov.rs/handle/123456789/7579
http://nardus.mpn.gov.rs/bitstream/id/40696/IzvestajKomisije7598.pdf
http://nardus.mpn.gov.rs/bitstream/id/40695/Disertacija7598.pdf
الإتاحة: Open access content. Open access content
https://creativecommons.org/licenses/by-nc-nd/4.0
BY-NC-ND
openAccess
أرقام أخرى: RSPST oai:nardus.mpn.gov.rs:123456789/7579
https://hdl.handle.net/21.15107/rcub_nardus_7579
1242117214
المصدر المساهم: UIVERSITY OF BELGRADE
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رقم الأكسشن: edsoai.on1242117214
قاعدة البيانات: OAIster