Effect of chlorination on the corrosion of Cu/Ni 70/30 condenser tubing

Cristiani, Pierangela; Perboni, Giorgio; Debenedetti, A.

doi:10.1016/j.electacta.2008.05.081

Cited by 38 publications

(16 citation statements)

References 5 publications

(6 reference statements)

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“…Disinfectants are frequently used to control bacterial regrowth in water distribution systems. It has been found that chlorination treatments promote the formation of a protective layer on copper-based alloys [16], preventing localized corrosion. Alternatively, the effect of disinfectant on biofilm might affect the corrosion of cast iron pipe.…”

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Characteristics of corrosion sales and biofilm in aged pipe distribution systems with switching water source

Wang

et al. 2016

Engineering Failure Analysis

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Red water has occasionally been observed in the water distribution system of Beijing following a change in the city's water source. Aged cast iron pipes from both affected and unaffected areas were used to establish experimental drinking water distribution systems under different disinfection conditions. The scale deposits formed under different conditions were characterized by X-ray diffraction and scanning electron microscopy, and the bacterial characteristics of the corrosion scales were determined using several molecular methods. The water quality changed less in pipe samples from the unaffected areas than pipes from the affected areas. The pipe samples from the unaffected area included predominantly α-FeOOH, Fe 3 O 4 , and γ-FeOOH, and 24.2% nitrate-reducing bacteria (NRB) were predominant with fewer ironoxidizing bacteria (IOB) being observed. The composition of corrosion products did not exhibit large variation over time although their crystallinity exhibited a slight decrease throughout the duration of the experiment. In contrast, in the pipe samples from the affected, α-FeOOH was the main compound with less γ-FeOOH and Fe 3 O 4 , and 3.3% IOB and 12% NRB with few IRB were observed. However, after transporting surface water containing disinfectants, the Fe 3 O 4 and dense corrosion layer formed, inhibiting the release of iron. Moreover, IRB and NRB became dominant. 22.6% and 34.3% NRB appeared in the pipes after chlorination and chloramination, respectively. The synergistic interaction of IRB and NRB with the corrosion layer played a large role in the release of iron from a cast iron pipe following changes in water quality.

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Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Characteristics of corrosion sales and biofilm in aged pipe distribution systems with switching water source

Wang

et al. 2016

Engineering Failure Analysis

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“…Most commonly, MIC is mitigated by chlorination, ferrous iron treatment and mechanical cleaning by circulating sponge balls. These are more or less effective methods, but even so, periodic shut-downs are unavoidable due to the need of maintenance and cleaning by hand [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Polystyrene films as barrier layers for corrosion protection of copper and copper alloys

Románszki

Datsenko

May

et al. 2014

Bioelectrochemistry

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Dip-coated polystyrene layers of sub-micrometre thickness (85-500 nm) have been applied on copper and copper alloys (aluminium brass, copper-nickel 70/30), as well as on stainless steel 304, and produced an effective barrier against corrosion and adhesion of corrosion-relevant microorganisms. According to the dynamic wettability measurements, the coatings exhibited high advancing (103°), receding (79°) and equilibrium (87°) contact angles, low contact angle hysteresis (6°) and surface free energy (31 mJ/m 2 ). The corrosion rate of copper-nickel 70/30 alloy samples in 3.5% NaCl was as low as 3.2 µm/a (44% of that of the uncoated samples), and in artificial seawater was only 0.9 µm/a (29% of that of the uncoated samples). Cell adhesion was studied by fluorescence microscopy, using monoculture of Desulfovibrio alaskensis. The coatings not only decreased the corrosion rate but markedly reduced the number of bacterial cells adhered to the coated surfaces. The PS-coating on copper gave the best result, 2×10 3 cells/cm 2 (1% of that of the uncoated control).

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“…Cu-Ni alloys are particularly susceptible to microbial corrosion in the maritime industries (Cristiani et al, 2008) but heat exchangers using water from a river can also be affected (Abraham et al, 2009). Galvanized steel is frequently used in the construction of cooling towers and water containers owing to its good resistance to corrosion and biofouling (Yuan et al, 2007).…”

Section: Copper and Other Metals And Alloysmentioning

confidence: 99%

Microbiologically influenced corrosion (MIC) in nuclear power plant systems and components

Tribollet

2012

Nuclear Corrosion Science and Engineering

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Effect of chlorination on the corrosion of Cu/Ni 70/30 condenser tubing

Cited by 38 publications

References 5 publications

Characteristics of corrosion sales and biofilm in aged pipe distribution systems with switching water source

Characteristics of corrosion sales and biofilm in aged pipe distribution systems with switching water source

Polystyrene films as barrier layers for corrosion protection of copper and copper alloys

Microbiologically influenced corrosion (MIC) in nuclear power plant systems and components

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