Biofouling and Biocorrosion in Industrial Water Systems

Coetser, S. E.; Cloete, T.E.

doi:10.1080/10408410500304074

Cited by 255 publications

(147 citation statements)

References 36 publications

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“…Microbiologically influenced corrosion (MIC) usually occurs with various types of corrosion and with scaling (Little et al 1996;Valdez et al 2009). Studies focusing on biofilms in several industrial water systems reported extensive biofouling and associated mineral precipitation leading to reduced efficiency of heat exchangers and reduced flow rates in the piping (Characklis 1990;Flemming 2002;Demadis 2003;Coetser and Cloete 2005).…”

Section: Introductionmentioning

confidence: 99%

Thermal effects on microbial composition and microbiologically induced corrosion and mineral precipitation affecting operation of a geothermal plant in a deep saline aquifer

et al. 2013

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The microbial diversity of a deep saline aquifer used for geothermal heat storage in the North German Basin was investigated. Genetic fingerprinting analyses revealed distinct microbial communities in fluids produced from the cold and warm side of the aquifer. Direct cell counting and quantification of 16S rRNA genes and dissimilatory sulfite reductase (dsrA) genes by real-time PCR proved different population sizes in fluids, showing higher abundance of bacteria and sulfate reducing bacteria (SRB) in cold fluids compared with warm fluids. The operation-dependent temperature increase at the warm well probably enhanced organic matter availability, favoring the growth of fermentative bacteria and SRB in the topside facility after the reduction of fluid temperature. In the cold well, SRB predominated and probably accounted for corrosion damage to the submersible well pump, and iron sulfide precipitates in the near wellbore area and topside facility filters. This corresponded to lower sulfate content in fluids produced from the cold well as well as higher content of hydrogen gas that was probably released from corrosion, and maybe favored growth of hydrogenotrophic SRB. This study reflects the high influence of microbial populations for geothermal plant operation, because microbiologically induced precipitative and corrosive processes adversely affect plant reliability.2

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Section: Introductionmentioning

confidence: 99%

Thermal effects on microbial composition and microbiologically induced corrosion and mineral precipitation affecting operation of a geothermal plant in a deep saline aquifer

et al. 2013

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“…Microbiological activity of microorganisms can cause or accelerate corrosion reaction [21,22]. The research [23] contains idea that development of microbiological corrosion is a result of transportation of different substances from the fluid to the metal surface.…”

Section: Resultsmentioning

confidence: 99%

“…Microorganisms influence corrosion in several ways [22]: using oxygen by aerobic organisms leads to formation of anodic areas. Local differences in oxygen concentration shift potential of metal surfaces and lead to formation of local corrosion cells; using hydrogen by anaerobic organisms depolarizes the cathode through the cathodic reaction, which increases the rate of metal loss at the anode.…”

Section: Resultsmentioning

confidence: 99%

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Corrosion of galvanized pipes in the hot water supply system

Andrianov

Spitsov

2017

MATEC Web Conf.

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Abstract. The paper describes the problem of steel pipes corrosion in domestic hot water supply systems. A case study of abnormally high rate of corrosion of galvanized steel pipes in a hot water supply system, installed in a complex of residential and public buildings, was considered. The rapid corrosion led to premature failure of these pipelines. Onsite visual inspection, chemical analysis of the tap water with LSI/RSI calculation and scanning electron microscopy and energy-dispersive X-ray spectroscopy analysis were used during this study. The basic factors that lead to pitting corrosion were established: quality of source water (its high corrosion activity), high temperature and local increase in oxygen content near the pipe surface. A possibility of microbial corrosion was also assumed.

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“…These microbes are found in natural biofilm as they all contribute to the complex consortia of biofilm (Beech and Coutinho 2003). Among others, SRB is not only the first group of interest in biocorrosion study (Videla et al, 1991b) but has also been recognised as the most significant contributors to microbiologically influenced corrosion (Coetser and Cloete, 2005;Marangoni et al, 2013). This study was carried out to assess theinhibition of biocorrosion of steel coupon AGWA, OK; IYALLA, D; ABU, GO by sulphate reducing bacteria and Iron oxidizing bacteria using Aloe vera (Aloe barbadensis) extract.…”

mentioning

confidence: 99%

Inhibition of bio corrosion of steel coupon by sulphate reducing bacteria and Iron oxidizing bacteria using Aloe Vera (<i>Aloe barbadensis</i>) extracts

Agwa¹,

Iyalla²,

Abu³

2017

Journal of Applied Sciences and Environmental Management

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ABSTRACT;The inhibition of biocorrosion of steel coupons by sulphate reducing bacteria (SRB) and Iron oxidizing bacteria (IOB) using Aloe vera (Aloe barbadensis) extract was tested. The water sample revealed a heterotrophic bacterial count of 1.7x10 3 cfu/ml for the sulphate reducing bacteria and 4.1x10 3 cfu/ml for the Iron oxidizing bacteria. Biocorrosion inhibition test using Aloe vera extract was prepared with 50 % w/v stock solution at 10 %, 20 %, 40 % and 80 % (v/v) concentrations. An increase in acidity was observed in the fresh post gate medium after 7 days to 6.6 with a slight drop to 6.5 after 28 days in the setup with SRB. In contrast, the pH of the setups with IOB showed an increase in alkalinity from 6.8 in fresh Winogradsky medium to 7.4 after 7 days. The conductivity of SRB setup increased from 3150 µS/cm to 27100 µS/cm after 7 days and decreased to 200 µS/cm after 28 days. On the other hand, the IOB setup showed an increase in conductivity from 100 µS/cm to 2820 µS/cm after 28 days. The surfaces of the metal coupon used in the biocorrosion testing were slimy to touch, indicating possible biofilm production. The average corrosion rate from day 7 to day 28 for IOB and SRB are 6.606 mpy and 12.48 mpy respectively. The 80 % v/v concentration of Aloe vera extract gave the highest inhibition efficiency, ranging from 89 %-100 % for IOB and 66 %-100 % for SRB. Aloe vera extract inhibited corrosion of steel coupons mediated by aerobic iron oxidizing bacteria and anaerobic sulphate reducing bacteria. © JASEM https://dx.doi.org/10.4314/jasem.v21i5.7

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Biofouling and Biocorrosion in Industrial Water Systems

Cited by 255 publications

References 36 publications

Thermal effects on microbial composition and microbiologically induced corrosion and mineral precipitation affecting operation of a geothermal plant in a deep saline aquifer

Thermal effects on microbial composition and microbiologically induced corrosion and mineral precipitation affecting operation of a geothermal plant in a deep saline aquifer

Corrosion of galvanized pipes in the hot water supply system

Inhibition of bio corrosion of steel coupon by sulphate reducing bacteria and Iron oxidizing bacteria using Aloe Vera (<i>Aloe barbadensis</i>) extracts

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