Ugotavljanje učinkovitosti klorovega dioksida na Escherichia coli v pitni vodi

diplomsko delo univerzitetnega študijskega programa I. stopnje

Nuša Kotnik (Author), Marjana Simonič (Mentor), Nataša Sovič (Co-mentor)

Abstract

Pitje vode, onesnažene z bakterijo Escherichia coli (E. coli), lahko pripelje do okužbe, ta pa lahko povzroči resna bolezenska stanja. Osrednji namen diplomskega dela je bil ugotoviti učinkovitost klorovega dioksida pri uničenju bakterije E. coli v pitni vodi. V okviru diplomskega dela smo izvedli štiri eksperimente. Učinkovitost smo preverjali z uporabo 0,2 mg/l raztopine klorovega dioksida. Za raziskovanje smo uporabili pitno vodo iz mariborskega vodovoda, ki so jo za potrebe naših raziskav v Nacionalnem laboratoriju za zdravje, okolje in hrano Maribor (NLZOH) laboratorijsko »okužili« z E. coli. Št. bakterij prisotnih v vodi smo določevali s pomočjo metode membranske filtracije, koncentracijo skupnega klora v vodi pa s kolorimetrično metodo (DPD test). Ugotovili smo, da je klorov dioksid učinkovit pri uničenju (deaktivaciji) E. coli v pitni vodi. Rezultati kažejo, da je za deaktivacijo E. coli potreben kontaktni čas manjši od 1 min.

Keywords

klorov dioksid;pitna voda;bakterije Escherichia coli;diplomske naloge;

Data

Language:	Slovenian
Year of publishing:	2018
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[N. Kotnik]
UDC:	628.1:546.134(043.2)
COBISS:	21960982
Views:	1713
Downloads:	155
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Determination of chlorine dioxide on escherichia coli in drinking water
Secondary abstract:	The presence of Escherichia coli (E. coli) bacteria in drinking water is not very common, however, drinking water polluted with this bacteria can lead to infection and can cause serious illnesses. The main intention of this diploma was to figure out the effectiveness of chlorine dioxide in the inactivation of E. Coli bacteria from drinking water. We did four experiments. We checked the effectiveness of this process by using 0.2 mg/l of chlorine dioxide solution. For research we used drinking water from the Maribor water supply, which has been intentionally infected with E. coli by the Maribor National Laboratory for Health, Environment and Food (NLZOH). We determined the number of bacteria in the water with using membrane filter tehnique, and the total chlorine concentration by colorimetric method (DPD test). We concluded that chlorine dioxide is effective in killing (inactivating) E. coli in drinking water. The results show that E. coli cells were inactivated in less then 1 min.
Secondary keywords:	chlorine dioxide;effectiveness;Escherichia coli;E. coli;drinking water;
URN:	URN:SI:UM:
Type (COBISS):	Bachelor thesis/paper
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	X, 36 str.
ID:	10959588