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Title:Uporaba procesa osmoze za koncentriranje kisle sirotke : diplomsko delo univerzitetnega študijskega programa I. stopnje
Authors:ID Gabrovec, Tomaž (Author)
ID Petrinić, Irena (Mentor) More about this mentor... New window
ID Simonič, Marjana (Comentor)
Files:.pdf UN_Gabrovec_Tomaz_2022.pdf (9,15 MB)
MD5: 0D6E15FDCE47E77396F4CB3F852DD4AA
PID: 20.500.12556/dkum/2d177f23-6370-4cc0-a599-1311e388493e
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Kisla sirotka, kot stranski produkt mlekarske industrije, ne predstavlja samo vse večjega okoljskega problema, ampak je tudi potencialno pomemben vir različnih nutrientov. Namen tega diplomskega dela je bil proučiti uporabnost procesa osmoze za koncentriranje kisle sirotke, proizvedene na območju Slovenije. Kot polprepustno membrano pri delu smo uporabili votlo-vlaknasto biomimetično akvaporinsko membrano, z vgrajenimi molekulami proteina akvaporina v njeno notranjo strukturo. Prav tako je bila testirana uporabnost 1 M natrijevega klorida, 1 M kuhinjske soli, morske vode ter 1,36 M amonijevega hidrogenkarbonata kot gonilne raztopine. Uspešnost procesa koncentriranja je bila spremljana z meritvami fluksa vode, osmotskega tlaka, povratnega fluksa topljenca ter vsebnosti beljakovine laktoferina v vhodni raztopini. Med testiranimi gonilnimi raztopinami je najslabše lastnosti izkazala raztopina 1,36 M amonijevega hidrogenkarbonata. Po drugi strani pa, pri uporabi 1 M natrijevega klorida in 1 molarne kuhinjske soli kot gonilnih raztopin, ni bilo opaziti razlik v izrabi procesa niti v delovanju same membrane. Pri poskusih z morsko vodo smo dobili nekoliko slabše rezultate v primerjavi z natrijevim kloridom in kuhinjsko soljo kot gonilno raztopino in je lahko z ekonomskega vidika dobra alternativa za uporabo v procesu osmoze, glede na njeno razširjenost po svetu. Da bi izkoristili potencial akvaporinske membrane v procesu osmoze, je bilo potrebno po vsaki filtraciji očistiti njeno površino. V naši raziskavi je bilo ustrezno čiščenje doseženo le z uporabo deionizirane vode. Rezultati te študije so pokazali, da se proces osmoze lahko uporabi za obdelavo oziroma koncentriranje stranskih produktov mlekarske industrije (predvsem kisle sirotke), z namenom pridobitve novih izdelkov z dodano tržno vrednostjo.
Keywords:osmoza, votlo-vlaknaste membrane, gonilna raztopina, sirotkine beljakovine, laktoferin, tekočinska kromatografija visoke ločljivosti
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[T. Gabrovec]
Year of publishing:2022
Number of pages:1 spletni vir (1 datoteka PDF (XII, 51 f.))
PID:20.500.12556/DKUM-81384 New window
UDC:66.081.6:637.142.2(043.2)
COBISS.SI-ID:102918659 New window
Publication date in DKUM:29.03.2022
Views:919
Downloads:65
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
:
GABROVEC, Tomaž, 2022, Uporaba procesa osmoze za koncentriranje kisle sirotke : diplomsko delo univerzitetnega študijskega programa I. stopnje [online]. Bachelor’s thesis. Maribor : T. Gabrovec. [Accessed 12 April 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=81384
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:12.03.2022

Secondary language

Language:English
Title:Application of the osmosis process for acid whey concentrating
Abstract:Acid whey, a by-product of the dairy industry, is it not only a growing environmental problem but is also a potentially important source of several nutrients. The main objective of this work was to investigate the applicability of forward osmosis in the concentration of acid whey produced in Slovenia. A biomimetic aquaporin hollow fibre membrane with aquaporin protein molecules embedded in its internal structure was used as a semipermeable membrane. In addition, the applicability of 1 M sodium chloride, 1 M table salt, seawater, and 1.36 M ammonium hydrogen carbonate as a draw solutions was tested. The effectiveness of the concentration process is monitored by measurements of water flow, osmotic pressure, electrical conductivity, and lactoferrin protein content in the feed solution. Among the draw solutions tested, a solution containing 1.36 M ammonium hydrogen carbonate showed the poorest performance. In contrast, when 1 M sodium chloride and 1 M table salt were used as draw solutions, no differences were observed in the utilisation of the FO process or in the function of the membrane itself. Although seawater performed slightly worse compared to the results obtained with sodium chloride and table salt as a draw solutions, it could be an economically viable alternative for use in FO given its worldwide distribution. To realise the full potential of the aquaporin membrane, its surface must be cleaned. In our study paricular study, adequate cleaning was achieved by applying only a ultrapure water.The results of this study have shown that the FO process can be used to process or concentrate dairy industry by-products (especially acid whey) to obtain new products with additional market value.
Keywords:Forward osmosis, hollow fibre membrane, draw solution, whey proteins, lactoferrin, high performace liquid chromatography


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