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master's thesis
Učinak pH na parcijalnu nitrifikaciju
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2014. urn:nbn:hr:159:256383
Rašić, Ana
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Food Engineering
Laboratory for the Biological Waste Water Treatment

Cite this document

Rašić, A. (2014). Učinak pH na parcijalnu nitrifikaciju (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:256383

Rašić, Ana. "Učinak pH na parcijalnu nitrifikaciju." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2014. https://urn.nsk.hr/urn:nbn:hr:159:256383

Rašić, Ana. "Učinak pH na parcijalnu nitrifikaciju." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2014. https://urn.nsk.hr/urn:nbn:hr:159:256383

Rašić, A. (2014). 'Učinak pH na parcijalnu nitrifikaciju', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 25 April 2024, https://urn.nsk.hr/urn:nbn:hr:159:256383

Rašić A. Učinak pH na parcijalnu nitrifikaciju [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2014 [cited 2024 April 25] Available at: https://urn.nsk.hr/urn:nbn:hr:159:256383

A. Rašić, "Učinak pH na parcijalnu nitrifikaciju", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:159:256383

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Metadata
TitleUčinak pH na parcijalnu nitrifikaciju
Title (english)Influence of pH partial nitrification
AuthorAna Rašić
MentorTibela Landeka Dragičević (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Food Engineering)
(Laboratory for the Biological Waste Water Treatment)
Zagreb
Defense date and country2014-09-29, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Biotechnology
Abstract
U ovom radu istražen je učinak pH na parcijalnu nitrifikaciju. Provedeni su diskontinuirani pokusi nitrifikacije, pri pH vrijednostima: (i) pH = 8,0; (ii) pH = 7,2 - 7,4; (iii) pH = 7,5 i (iv) bez korekcije pH. Pokazano je da aktivni mulj provodi proces nitrifikacije uz prevođenje NH4-N u aerobnim uvjetima do NO2-N i NO3-N. Na temelju dobivenih rezultata istaknut je učinak pH na aktivnost nitritacije; pH ~ 7,0 (7,2 - 7,4) > nakupljanje NO2-N > pH = 8,0. Nadalje, nitrifikacija pri pH 8,0 pokazuje nakupljanje NO2-N koji čini oko 50 % oksidiranog NH4-N. Preostali dio čini NO3-N. Nitrifikacija pri pH 7,2 - 7,4 pokazuje nakupljanje i NO2-N i NO3-N, s tim da je oksidacija NH4-N u korist NO3-N od 50 - 70 %. Nitrifikacija bez korekcije pH vrijednosti, pri čemu je pH bila oko 8,0 pokazuje istu aktivnost kao i u procesu uz korekciju pH na 8,0.
Abstract (english)
This study examined the effect of pH on partial nitrification. Discontinuous experiments of nitrification, at a pH of: (i) pH = 8.0; (ii) pH = 7.2 – 7.4; (iii) pH = 7.5 and (iv) without pH correction. Our experiments showed that activated sludge performed process of nitrification with conversion of NH4-N to NO2-N and NO3-N under aerobic conditions. Based on the experimental results, the effect of pH on activity of nitritation is highlighted; pH ~ 7.0 (7.2 – 7.4) > accumulation NO2-N > pH = 8.0. Furthermore, nitrification showed accumulation of NO2-N which was cca 50 % of oxidised NH4-N at the pH value of 8.0. The remaining fraction was NO3-N. Nitrification at a pH of 7.2 - 7.4 showed accumulation of both, NO2-N and NO3-N, and the oxidation of NH4-N towards NO3-N which accounts for 50 - 70 % of reduction. Nitrification without pH corrections where the pH was around 8 shows the same activity as the process of nitrification with pH correction to 8.0.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:256383
Study programmeTitle: Bioprocess Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka bioprocesnog inženjerstva (magistar/magistra inženjer/inženjerka bioprocesnog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
RepositoryRepository of the Faculty of Food Technology and Biotechnology
Created on2017-05-02 08:43:34

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