Biodeterioration of concrete by the fungus Fusarium

Gu, Ji‐Dong; Ford, Tim; Berke, Neal S.; Mitchell, Ralph

doi:10.1016/s0964-8305(98)00034-1

Cited by 204 publications

(92 citation statements)

References 29 publications

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“…However, the contribution of A. ferrooxidans to the corrosion process in our experiment must have been small because we found it to be much less abundant than A. thiooxidans. It was recently suggested that fungi also play an important role in the MICC process (7,13,30). We found no microscopic evidence at any time during the monitoring period of a significant presence of fungus-like microorganism after staining samples with DAPI.…”

Section: Succession Of Concrete Corrosion and Microbial Communitycontrasting

confidence: 61%

Succession of Sulfur-Oxidizing Bacteria in the Microbial Community on Corroding Concrete in Sewer Systems

Okabe

Odagiri

Ito

et al. 2007

Appl Environ Microbiol

305

238

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Microbially induced concrete corrosion (MICC) in sewer systems has been a serious problem for a long time. A better understanding of the succession of microbial community members responsible for the production of sulfuric acid is essential for the efficient control of MICC. In this study, the succession of sulfur-oxidizing bacteria (SOB) in the bacterial community on corroding concrete in a sewer system in situ was investigated over 1 year by culture-independent 16S rRNA gene-based molecular techniques. Results revealed that at least six phylotypes of SOB species were involved in the MICC process, and the predominant SOB species shifted in the following order: Thiothrix sp., Thiobacillus plumbophilus, Thiomonas intermedia, Halothiobacillus neapolitanus, Acidiphilium acidophilum, and Acidithiobacillus thiooxidans. A. thiooxidans, a hyperacidophilic SOB, was the most dominant (accounting for 70% of EUB338-mixed probe-hybridized cells) in the heavily corroded concrete after 1 year. This succession of SOB species could be dependent on the pH of the concrete surface as well as on trophic properties (e.g., autotrophic or mixotrophic) and on the ability of the SOB to utilize different sulfur compounds (e.g., H 2 S, S 0 , and S 2 O 3 2؊). In addition, diverse heterotrophic bacterial species (e.g., halo-tolerant, neutrophilic, and acidophilic bacteria) were associated with these SOB. The microbial succession of these microorganisms was involved in the colonization of the concrete and the production of sulfuric acid. Furthermore, the vertical distribution of microbial community members revealed that A. thiooxidans was the most dominant throughout the heavily corroded concrete (gypsum) layer and that A. thiooxidans was most abundant at the highest surface (1.5-mm) layer and decreased logarithmically with depth because of oxygen and H 2 S transport limitations. This suggested that the production of sulfuric acid by A. thiooxidans occurred mainly on the concrete surface and the sulfuric acid produced penetrated through the corroded concrete layer and reacted with the sound concrete below.Concrete corrosion has an enormous economic impact worldwide, especially when the replacement or repair of municipal sewer systems is required. Concrete corrosion is the result of several causes such as carbonation, chloride erosion, and other chemical reactions. In sewer systems and wastewater treatment facilities where high concentrations of hydrogen sulfide, moisture, and oxygen are present in the atmosphere, the deterioration of concrete is caused mainly by biogenic acid (i.e., sulfuric acid) and is known as microbially induced concrete corrosion (MICC). The biogenic acid is generated by various microbial species and complex mechanisms. The general mechanism for the sulfuric acidcaused corrosion of sewer systems has been described in the literature (17, 36). In the first step, hydrogen sulfide (H 2 S) is produced by sulfate-reducing bacteria under anaerobic conditions in sewer pipes. This hydrogen sulfide enters the sewer atmosphere by v...

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Section: Succession Of Concrete Corrosion and Microbial Communitycontrasting

confidence: 61%

Succession of Sulfur-Oxidizing Bacteria in the Microbial Community on Corroding Concrete in Sewer Systems

Okabe

Odagiri

Ito

et al. 2007

Appl Environ Microbiol

305

238

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“…Aspergillus spp. are fermentative microorganisms and they can excrete many organic acids into the environment, including the acids which may cause biodeterioration of natural stones, as well as brick, concrete or mortars (Gu et al, 1998;Cwalina, 2008). In humans they may cause infections, e.g.…”

Section: Pusz Et Almentioning

confidence: 99%

Speleomycological research in underground Osówka complex in Sowie Mountains (Lower Silesia, Poland)

Pusz¹,

Ogórek²,

Uklanska-Pusz³

et al. 2014

IJS

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“…Gu et al [41] go further in their explanation and identified the fungus they observed as Fusarium. They claim that this has a more detrimental effect on the concrete that that of the neutrophilic bacteria T. intermedius.…”

Section: Other Acids and Organismsmentioning

confidence: 95%

“…In a departure from the accepted role of the species Thiobacillus in lowering the surface pH of concrete from approximately 8 to 4, some authors have also attributed the initial reduction to that of fungus growth [5,41]. Mori et al [5] found an unidentified green fungus which grew at high pH levels and was capable of reducing the pH to levels suitable for colonisation and growth of T.…”

Section: Other Acids and Organismsmentioning

confidence: 99%

Biochemical attack on concrete in wastewater applications: A state of the art review

O’Connell

McNally

Richardson

2010

Cement and Concrete Composites

220

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Publication informationCement and Concrete Composites, 32 (7) AbstractThe costs associated with the provision and maintenance of drinking water and wastewater infrastructure represents a significant financial demand worldwide. Maintenance costs are disproportionately high, indicating a lack of adequate durability. There remains a lack of consensus on degradation mechanisms, the performance of various cement types, the role of bacteria in the corrosion process associated with wastewater applications and testing methodologies. This paper presents a review of the literature, outlining the various research approaches undertaken in an effort to address this problem. The findings of these varying approaches are compared, and the different strategies employed are compiled and discussed. It is proposed that a key step in advancing the understanding of the associated deterioration mechanism is a combined approach that considers the interaction between biological and chemical processes. If this can be achieved then steps can be taken to establishing a performance-based approach for specifying concrete in these harsh service conditions.

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Biodeterioration of concrete by the fungus Fusarium

Cited by 204 publications

References 29 publications

Succession of Sulfur-Oxidizing Bacteria in the Microbial Community on Corroding Concrete in Sewer Systems

Succession of Sulfur-Oxidizing Bacteria in the Microbial Community on Corroding Concrete in Sewer Systems

Speleomycological research in underground Osówka complex in Sowie Mountains (Lower Silesia, Poland)

Biochemical attack on concrete in wastewater applications: A state of the art review

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