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undergraduate thesis
Primjena slatkovodne mikroalge Scenedesmus sp. za određivanje toksičnosti mikroplastičnih čestica polipropilena
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. urn:nbn:hr:149:661949
Tavra, Dubravka
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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Tavra, D. (2021). Primjena slatkovodne mikroalge Scenedesmus sp. za određivanje toksičnosti mikroplastičnih čestica polipropilena (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:661949

Tavra, Dubravka. "Primjena slatkovodne mikroalge Scenedesmus sp. za određivanje toksičnosti mikroplastičnih čestica polipropilena." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:661949

Tavra, Dubravka. "Primjena slatkovodne mikroalge Scenedesmus sp. za određivanje toksičnosti mikroplastičnih čestica polipropilena." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:661949

Tavra, D. (2021). 'Primjena slatkovodne mikroalge Scenedesmus sp. za određivanje toksičnosti mikroplastičnih čestica polipropilena', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 25 August 2024, https://urn.nsk.hr/urn:nbn:hr:149:661949

Tavra D. Primjena slatkovodne mikroalge Scenedesmus sp. za određivanje toksičnosti mikroplastičnih čestica polipropilena [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2021 [cited 2024 August 25] Available at: https://urn.nsk.hr/urn:nbn:hr:149:661949

D. Tavra, "Primjena slatkovodne mikroalge Scenedesmus sp. za određivanje toksičnosti mikroplastičnih čestica polipropilena", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:149:661949

Metadata
TitlePrimjena slatkovodne mikroalge Scenedesmus sp. za određivanje toksičnosti mikroplastičnih čestica polipropilena
Title (english)Application of freshwater microalgae Scenedesmus sp. for determining the toxicity of polypropylene microplastic particles
AuthorDubravka Tavra
MentorDajana Kučić Grgić (mentor)
Committee memberDajana Kučić Grgić (predsjednik povjerenstva)
Committee memberŠime Ukić (član povjerenstva)
Committee memberLidija Furač (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2021-07-05, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Plastika je zbog vrlo dobrih kemijskih i fizikalnih svojstava te isplative cijene doživjela eksponencijalni rast u proizvodnji i primjeni posljednjih 100 godina. No, sve što jednom nastane, neće nestati, stoga sukladno povećanoj proizvodnji nastaju i ogromne količine plastičnog otpada, koji nerijetko završava u okolišu, pogotovo vodenom i to nepravilno zbrinut. Raznim procesima u prirodi, nastaju čestice <5 mm koje se nazivaju mikroplastikom. Toksičan utjecaj tih čestica je dijelom dokazan, ali je veliki dio još uvijek neistražen. U ovome radu provela su se toksikološka ispitivanja utjecaja mikroplastičnih čestica veličina 500-710 μm, 300-500 μm i <300 μm pri koncentracijama od 50 mg/L, 250 mg/L, 500 mg/L, 750 mg/L i 1000 mg/L na inhibiciju rasta mikroalge Scenedesmus sp.. Pratile su se i morfološke promjene. Dobiveni rezultati ukazuju na to da je koncentracija čestica značajni parametar prilikom ispitivanja toksičnosti jer se povećanjem koncentracije jasno uočava i povećana inhibicija rasta. Najveća inhibicija rasta mikroalge Scenedesmus sp., 8,22%, prouzročena je pri najmanjoj veličini čestica, <300 μm, te pri koncentraciji od 750 mg/L. Tijekom pokusa nisu zabilježene značajne morfološke promjene mikroalge.
Abstract (english)
Due to its very good chemical and physical properties, plastics have experienced an exponential growth in cost-effective production and application over the last 100 years. However, everything that appears once will not disappear, so correspondingly increased production also generates huge amounts of plastic waste, which often ends up in the environment, especially water where it is improperly disposed. By various processes in nature, particles <5 mm are formed which are called microplastics. The toxic effects of these particles have been partially proven, but a large part is still unexplored. In this work, toxicological studies of the effects of microplastic particles of size 500-710 μm, 300-500 μm and <300 μm at concentrations of 50 mg/L, 250 mg/L, 500 mg/L, 750 mg/L and 1000 mg/L were performed to inhibit the growth of the microalgae Scenedesmus sp.. Morphological changes were also monitored. The obtained results indicate that the particle concentration is an important parameter when testing for toxicity because by increasing the concentration the growth inhibition also increases. The highest inhibition of microalgae growth of Scenedesmus sp., 8.22%, was produced with the smallest particle size <300 μm, at a concentration of 750 mg/L. No significant morphological changes of the microalgae were observed during the experiment.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:661949
ProjectNumber: IP-2019-04-9661
Title: Primjena naprednih tehnologija obrade voda za uklanjanje mikroplastike
Title: Advanced Water Treatment Technologies for Microplastics Removal
Acronym: AdWaTMiR
Leader: Tomislav Bolanča
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
Study programmeTitle: Environmental Engineering - Undergraduate study
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2023-04-24 12:06:07