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undergraduate thesis
Optimizacija predobrade sekundarnog efluenta otpadne vode za termičku obradu nusproizvoda životinjskog podrijetla za nanofiltraciju
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. urn:nbn:hr:149:845004
Kraš, Ana
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

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Kraš, A. (2017). Optimizacija predobrade sekundarnog efluenta otpadne vode za termičku obradu nusproizvoda životinjskog podrijetla za nanofiltraciju (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:845004

Kraš, Ana. "Optimizacija predobrade sekundarnog efluenta otpadne vode za termičku obradu nusproizvoda životinjskog podrijetla za nanofiltraciju." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. https://urn.nsk.hr/urn:nbn:hr:149:845004

Kraš, Ana. "Optimizacija predobrade sekundarnog efluenta otpadne vode za termičku obradu nusproizvoda životinjskog podrijetla za nanofiltraciju." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. https://urn.nsk.hr/urn:nbn:hr:149:845004

Kraš, A. (2017). 'Optimizacija predobrade sekundarnog efluenta otpadne vode za termičku obradu nusproizvoda životinjskog podrijetla za nanofiltraciju', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:149:845004

Kraš A. Optimizacija predobrade sekundarnog efluenta otpadne vode za termičku obradu nusproizvoda životinjskog podrijetla za nanofiltraciju [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2017 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:149:845004

A. Kraš, "Optimizacija predobrade sekundarnog efluenta otpadne vode za termičku obradu nusproizvoda životinjskog podrijetla za nanofiltraciju", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:149:845004

Metadata
TitleOptimizacija predobrade sekundarnog efluenta otpadne vode za termičku obradu nusproizvoda životinjskog podrijetla za nanofiltraciju
Title (english)Optimization of the pretreatment of a rendering plant secondary effluent for the nanofiltration
AuthorAna Kraš
MentorDavor Dolar (mentor)
Committee memberDavor Dolar (predsjednik povjerenstva)
Committee memberDanijela Ašperger (član povjerenstva)
Committee memberLidija Furač (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2017-09-22, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Mechanical, Thermal and Separation Processes
Abstract
Kako bi se poboljšala kvaliteta sekundarnog efluenta (SE) kafilerijske otpadne vode (KOV) i učinilo ga se prikladnim za obradu nanofiltracijom (NF), kao postupak predobrade korištena je koagulacija i pješčana filtracija (SF). Optimalni uvjeti za koagulaciju (pH = 5,52 i γ(Fe3+) = 18,54 mg L^-1) dobiveni su uz pomoć metode odzivne površine na temelju rezultata Jar testa. Pri tim uvjetima dolazi do najvećeg uklanjanja ključnih parametara - ukupnog ugljika (TC) i mutnoće. Efikasnost pojedinog postupka predobrade provedena je uspoređivanjem rezultata (pada fluksa, FTIR spektara membrana, TC-a, anorganskog ugljika (IC), otopljenog organskog ugljika (DOC), mutnoće, pH nakon koagulacije i električne provodnosti) dobivenih nanofiltracijom sekundarnog efluenta s koagulacijom nakon optimizacije i/ili pješčanom filtracijom ili bez predobrade. Pješčana filtracija nije se pokazala učinkovitim postupkom predobrade za ispitivani tip SE, jer nije uklonila ukupni ugljik, dok je koagulacija uklonila ukupni ugljik, ali i mutnoću. Iz toga slijedi da je koagulacija prigodan postupak predobrade sekundarnog efluenta za nanofiltraciju, dok pješčana filtracija može dodatno, u blagoj mjeri, poboljšati rezultate.
Abstract (english)
In order to improve the quality of the rendering plant secondary effluent and make it suitable for nanofiltration; coagulation and sand filtration (SF) were used as pretreatments. Optimal conditions for coagulation (pH = 5.52 and γ(Fe3+) = 18.54 mg L^-1) were obtained by response surface methodology to Jar test results. Under these conditions, the highest removal of key parameters - total carbon (TC) and turbidity occurs. Efficiency of each pretreatment procedure was evaluated by comparing the results (flux decline, FTIR spectra of the membrane surface, TC, inorganic carbon (IC), dissolved organic carbon (DOC), turbidity, pH after coagulation and electrical conductivity) of secondary effluent nanofiltration either with coagulation after optimization and/or sand filtration, or without pretreatment. Sand filtration was not an effective pretreatment for tested SE because it removed only turbidity, while coagulation removed total carbon as well as turbidity. Therefore, coagulation is a promising pretreatment of secondary effluents for nanofiltration, while sand filtration can additionally, slightly improve the results.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:845004
Study programmeTitle: Applied Chemistry - Undergraduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry
Course: Advanced materials and technologies
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2021-03-30 11:51:52