Najnovija saznanja o mehanizmima mikrobiološki uzrokovane korozije

undergraduate thesis

• Title (english): Recent findings on the mechanisms of microbially induced corrosion
• Author: Leonora Miler
• Mentor: Sanja Martinez (mentor)
• Committee member: Sanja Martinez (predsjednik povjerenstva)
• Committee member: Marija Vuković Domanovac (član povjerenstva)
• Committee member: Helena Otmačić Ćurković (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2021-09-21, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Basic Technical Sciences

Abstract

Mikrobiološka korozija je vrsta korozije koja se tijekom godina sve više i više istražuje zbog toga što se pojava mikrobiološke korozije sve više zamjećuje u raznim industrijskim i gospodarskim granama te zbog toga što njenom pojavom nastaju veliki troškovi. Zbog toga se nastoji provesti što više istraživanja kako bi se ova pojava mogla što detaljnije opisati. U uvodnom dijelu ovoga rada dane su kratke informacije o tome gdje je zabilježena pojava mikrobiološke korozije, koji su njeni uzročnici te kakve vrste korozijskih oštećenja može uzrokovati. U općem dijelu dane su definicije mikrobiološke korozije, kratki povijesni pregled dosadašnjih istraživanja, podjela mikroorganizama od kojih su sulfat-reducirajuće bakterije najznačajniji uzročnici ove vrste korozije, proces formiranja biofilma kao i njegova uloga te dosadašnji predloženi mehanizmi mikrobiološke korozije. U preglednom dijelu predstavljene su tehnike detekcije mikrobiološke korozije te tehnike kojima se ta korozija inhibira. Predstavljeni su i najnoviji mehanizmi mikrobiološke korozije te najnovija istraživanja koja nastoje objasniti mehanizme izazvane pojedinim mikroorganizmima . Kao najnoviji mehanizmi mikrobiološke korozije navode se izvanstanični prijenos elektrona(extracellular electron transfer-EET), metabolitska mikrobiološka korozija(metabolite microbiologically influenced corrosion- M-MIC), katalizirana katodna depolarizacija te ubrzana korozija s niskom razinom vode( accelerated low water corrosion -ALWC) .

Abstract (english)

Microbiological corrosion is a type of corrosion that has been researched more and more over the years because it has been noticed that the occurrence of microbiological corrosion is increasingly observed in various industries and economic branches and that great costs are incurred by its occurrence. Therefore, as much research as possible is conducted so that it can be described in as much detail as possible. The introductory part of this paper provides brief information on where microbiological corrosion has been recorded, what are its causes and what types of corrosion it can cause. In the general part, definitions of microbiological corrosion are given, a brief historical overview of previous research is given, division of microorganisms is given and it’s demonstrated that sulfate-reducing bacteria are the most significant causes of this type of corrosion, the process of biofilm formation as well as its role is given and the proposed mechanisms of microbiological corrosion so far are presented. In the overview part, techniques for detecting microbiological corrosion and techniques that inhibit corrosion are presented. The latest mechanisms of microbiological corrosion are also presented, as well as the latest research that seeks to explain the mechanisms of corrosion caused by individual microorganisms. The newest mechanisms of microbiological corrosion include extracellular electron transfer(EET), metabolite microbiologically influenced corrosion(M-MIC), catalyzed cathodic depolarization, and accelerated low water corrosion (ALWC).

• Keywords: mikrobiološka korozija; korozijski mehanizam; sulfat-reducirajuće bakterije; biofilm
• Keywords (english): microbiological corrosion; corrosion mechanism; sulfate-reducing bacteria; biofilm
• Language: croatian
• URN:NBN: urn:nbn:hr:149:647425
• Study programme: Title: Materials Science and Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2023-04-11 07:32:50