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microbial biofilms

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Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003637
EISBN: 978-1-62708-182-5
..., microbiological, chemical, and electrochemical. It provides information on the microbiologically influenced corrosion (MIC) of irons and steels, passive alloys (austenitic stainless steels), aluminum alloys, copper alloys, and composites. The article reviews the formation of microbial biofilms and macrofouling...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003647
EISBN: 978-1-62708-182-5
... Abstract Corrosion resulting from the presence and activities of microbes on metals and metal alloys is generally referred to as microbiologically influenced corrosion (MIC). This article describes the biofilm formation and structure and microbial processes influencing corrosion. It also...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003656
EISBN: 978-1-62708-182-5
... in the future. Microbially induced localized penetration of materials can occur due to a combination of microbially mediated electrochemical reactions, local generation of deleterious species, and geometrical restrictions produced by the biofilm. Through-wall penetration of piping and heat...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003556
EISBN: 978-1-62708-180-1
... species that are produced and consumed by microorganisms have been reviewed ( Ref 35 ), and as-yet poorly described microbially produced phosphorus compounds in MIC have been implicated ( Ref 11 ). It has been suggested that hydrogen peroxide produced in biofilms plays a role in the crevice corrosion of...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006788
EISBN: 978-1-62708-295-2
... due to deposition of manganese oxides on the metal surface by a monospecies biofilm of Leptothrix discophora . A lower level of ennoblement was observed under a thicker biofilm (>200 μm versus 120 μm) generated by L. discophora in a mixed-microbial community. This correlated with lower average...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003606
EISBN: 978-1-62708-182-5
... atmospheric factors, climatic conditions, and air-chemical pollutants that determine the corrosiveness of the atmosphere and contribute to the metal corrosion process are discussed. The article reviews the phenomenon of precipitation runoff on the corroded metal surface and the corrosive microbial effect on...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004130
EISBN: 978-1-62708-184-9
... environments is the availability of nutrients. For example, organic nutrients and bacteria are most abundant in the upper layers of oceans, and both decrease with depth ( Ref 27 ). Microbial biofilms develop on all surfaces in contact with aqueous environments ( Ref 28 ). Chemical and electrochemical...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004105
EISBN: 978-1-62708-184-9
... materials commonly called slime. Formation of biofilms can also change the pH at the metal surface ( Ref 36 , 37 , 38 ). Moreover, the development of a microbial biofilm, an example of which is shown in Fig. 31 , results in a heterogeneous distribution of microorganisms both parallel and perpendicular...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003670
EISBN: 978-1-62708-182-5
... engineer's viewpoint are that they are small, ubiquitous, potentially very rapid growing, and subject to certain common restraints, such as temperature, pH, and nutrient availability. A problem exists only when conditions become favorable for a specific microbial population to explode, giving rise to...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006013
EISBN: 978-1-62708-172-6
..., and proteoglycans to the hull surface. Subsequently, larger organisms such as bacteria and algae begin to appear. Eventually, a microbial biofilm is produced, effectively covering the entire underwater portion of the ship hull. This process takes approximately a week, depending on water temperature...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006059
EISBN: 978-1-62708-172-6
... then recycled to the aeration stage (tank or reactor) to maintain the concentration of microbial activity needed for degradation of the various (mostly organic) constituents found in the influent wastewater. Because microorganisms are continuously synthesized in the activated sludge process, some of...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003701
EISBN: 978-1-62708-182-5
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003812
EISBN: 978-1-62708-183-2
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004213
EISBN: 978-1-62708-184-9
... presence of microbial communities that contain a variety of types of bacteria. In these communities, the bacteria act cooperatively to produce conditions favorable to the growth of each species. Obligate anaerobic bacteria can thrive in aerobic environments when they are present beneath biofilms/deposits...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003644
EISBN: 978-1-62708-182-5
... not contain information concerning the cause of corrosion. Therefore, statements that certain electrochemical techniques such as the electrochemical noise (ECN) technique “offers unique capabilities that should allow quantification of microbial effects on corrosion,” and “ECN offers promise in...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003844
EISBN: 978-1-62708-183-2
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004152
EISBN: 978-1-62708-184-9
... biofouling on the cooling water side of a condenser will reduce corrosion ( Ref 24 , Ref 25 , Ref 26 ). In some instances, microbial activity does nothing more than create localized geometric conditions, for example, a crevice beneath a microbial growth, that stimulate crevice corrosion. In other...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006073
EISBN: 978-1-62708-172-6
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003839
EISBN: 978-1-62708-183-2
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
... microbes is conducted to determine certain topographical patterns that are generally associated with MIC, such as rounded pits under discrete mounds, subsurface cavities under biofilms, and corrosion attack along weld seams. However, while such patterns arouse suspicions of MIC, they do not prove that the...