Učinak porasta koncentracije elektron akceptora na denitrifikaciju

Nikin, Lucija

prikaz prve stranice dokumenta Učinak porasta koncentracije elektron akceptora na denitrifikaciju

Download
PDF 1.55 MB

master's thesis

Učinak porasta koncentracije elektron akceptora na denitrifikaciju

Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2024. urn:nbn:hr:159:901614

Nikin, Lucija

University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Food Engineering
Laboratory for the Biological Waste Water Treatment

Cite this document

APA 6th Edition

Nikin, L. (2024). Učinak porasta koncentracije elektron akceptora na denitrifikaciju (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:901614

MLA 8th Edition

Nikin, Lucija. "Učinak porasta koncentracije elektron akceptora na denitrifikaciju." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2024. https://urn.nsk.hr/urn:nbn:hr:159:901614

Chicago 17th Edition

Harvard

Nikin, L. (2024). 'Učinak porasta koncentracije elektron akceptora na denitrifikaciju', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 06 February 2025, https://urn.nsk.hr/urn:nbn:hr:159:901614

Vancouver

Nikin L. Učinak porasta koncentracije elektron akceptora na denitrifikaciju [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2024 [cited 2025 February 06] Available at: https://urn.nsk.hr/urn:nbn:hr:159:901614

IEEE

L. Nikin, "Učinak porasta koncentracije elektron akceptora na denitrifikaciju", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:159:901614

Cite this item: https://urn.nsk.hr/urn:nbn:hr:159:901614

Please login to the repository to save this object to your list.

Metadata

Title	Učinak porasta koncentracije elektron akceptora na denitrifikaciju
Title (english)	Effect of increase in electron acceptor concentration on denitrification
Author	Lucija Nikin
Mentor	Dijana Grgas (mentor)
Committee member	Tibela Landeka Dragičević (predsjednik povjerenstva)
Committee member	Antonija Trontel (član povjerenstva)
Committee member	Marina Svetec Miklenić (član povjerenstva)
Granter	University of Zagreb Faculty of Food Technology and Biotechnology (Department of Food Engineering) (Laboratory for the Biological Waste Water Treatment) Zagreb
Defense date and country	2024-12-19, Croatia
Scientific / art field, discipline and subdiscipline	BIOTECHNICAL SCIENCES Biotechnology
Abstract	U ovom radu istražena je denitrifikacija sintetske otpadne vode pri omjeru KPK/N 10 uz natrijev acetat kao izvor ugljika i početnim koncentracijama dušika od 20 ± 3 mg N/L, 40 ± 3 mg N/L i 60 ± 3 mg N/L. Pokusi su provedeni s koncentracijom mikrobne biomase 1,8 ± 0,2 g MLSS (engl. Mixed Liquor Suspended Solids, hrv. suspendirane čestice miješane tekućine)/L, dok su kao akceptori elektrona korišteni NO₂-N i NO₃-N. Učinkovitost uklanjanja nitrata i nitrita iznosila je 100 % za sve početne koncentracije dušika. Omjer ∆KPK/∆N i učinkovitost uklanjanja KPK bili su neovisni o početnim koncentracijama dušika. Omjer ∆KPK/∆N za nitrate iznosio je 4,3-4,4, a za nitrite 3,1-3,3. Brzina denitrifikacije i brzina oksidacije KPK rasle su porastom početne koncentracije dušika te su obje brzine bile više kada je kao akceptor elektrona korišten NO₃-N, u odnosu na NO₂-N za 12-25 %, odnosno 3446 %.
Abstract (english)	In this paper the denitrification of synthetic wastewater at a COD/N ratio of 10 using sodium acetate as the carbon source and initial nitrogen concentrations of 20 ± 3 mg N/L, 40 ± 3 mg N/L and 60 ± 3 mg N/L was investigated. The experiments were conducted with a microbial biomass concentration of 1.8 ± 0.2 g MLSS/L, utilizing NO₂-N and NO₃-N as electron acceptors. The removal efficiency of nitrates and nitrites was 100 % for all initial nitrogen concentrations. The ∆COD/∆N ratio and COD removal efficiency were independent of the initial nitrogen concentrations. The ∆COD/∆N ratio for nitrates was 4.3-4.4, while for nitrites, it was 3.1-3.3. The denitrification rate and COD oxidation rate increased with the initial nitrogen concentration, and both rates were higher when NO₃-N was used as the electron acceptor compared to NO₂-N by 12-25 % and 34-46 %, respectively.
Keywords
Keywords (english)
Language	croatian
URN:NBN	urn:nbn:hr:159:901614
Study programme	Title: 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 resource	Text
File origin	Born digital
Access conditions	Open access
Terms of use
Repository	Repository of the Faculty of Food Technology and Biotechnology
Created on	2025-01-08 14:42:35