Utjecaj sadržaja željeza u zemlji crvenici na metabolizam fosfat-akumulirajućih bakterija

master's thesis

• Title (english): Influence of iron contents in red soil on metabolism of phosphate-accumulating bacteria
• Author: Marica Pirija
• Mentor: Jasna Hrenović (mentor)
• Committee member: Jasna Hrenović (član povjerenstva)
• Committee member: Zdravko Dolenec (član povjerenstva)
• Committee member: Vesna Petrović-Peroković (član povjerenstva)
• Committee member: Martina Šeruga Musić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2012, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

U tercijarnom stupnju biološkog pročišćavanja otpadnih voda koriste se fosfat-akumulirajuće bakterije. Danas se proučavaju različiti prirodni nosači na koje bi se imobilizirale bakterije kako bi se postiglo što bolje pročišćavanje otpadnih voda. Crvenica se pokazala kao dobar nosač za fosfat-akumulirajuću bakteriju Acinetobacter junii. Kapacitet uklanjanja fosfata za samu crvenicu je dobar (do 32,4%), ali se dodatkom A. junii značajno povećava (do 51,9%). Crvenica sadrži različite željezne okside i hidrokside od kojih joj i potječe crvena boja. Usporedba rezultata dobivenih s originalnom crvenicom i crvenicom u kojoj je uklonjeno površinsko ili površinsko i oktaedarsko željezo nisu pokazali značajne razlike u broju imobiliziranih bakterija te njihove sposobnosti uklanjanja fosfata. Sadržaj željeza u crvenici nije utjecao na imobilizaciju i metabolizam fosfat-akumulirajućih bakterija.

Abstract (english)

Phosphate-accumulating bacteria are used in the process of enhanced biological phosphorus removal from wastewater. There is huge interest for different natural carriers in which is possible to immobilize bacteria to achieve a better purification of wastewater. Red soil is good carrier of phosphate-accumulating bacteria Acinetobacter junii. Red soil has a good capacity of phosphorus removal (to 32,4%) which is significantly improved with addition of A. junii (to 51,9%).Red soil contains different kinds of iron oxides and hydroxides which give her a red colour. Comparison of results in original red soil and red soil with removed surface iron or surface and octahedron iron indicate that there is no significant difference in the number of immobilizing bacteria and their ability of phosphorus removal. Contents of iron in red soil, has no influence on metabolism of phosphate-accumulating bacteria.

• Keywords: crvenica; željezo; fosfat-akumulirajuće bakterije; Acinetobacter junii
• Keywords (english): red soil; iron; phosphate-accumulating bacteria; Acinetobacter junii
• Language: croatian
• URN:NBN: urn:nbn:hr:217:132750
• Study programme: Title: Biology and Chemistry; Study programme type: university; Study level: graduate; Academic / professional title: profesor biologije i kemije (profesor biologije i kemije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-04-20 08:12:44