Field study on the characteristics of scales in damaged multi-material water supply pipelines: Insights into heavy metal and biological stability

She, Jia; Tian, Yuan; Li, Jiaxin; Chu, Xianxian; Zheng, Guolei; Liu, Yunhui; Zhao, Weigao

doi:10.1016/j.jhazmat.2021.127324

Cited by 21 publications

(4 citation statements)

References 64 publications

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“…Consistently, two OTUs associated with Rhodocyclaceae showed positive relationships with the bioavailable Fe and Cr. It also has been reported that Pb exhibited a strong correlation with the Fe(III)-reducing bacterial lineages Rhodocyclaceae (Moberly et al, 2016;Jia et al, 2022). Apart from these bacteria, the fungi, e.g., Meruliaceae and Pleosporaceae, showed similar trends.…”

Section: Effects Of Geochemical Characteristics On Bacterial and Fung...mentioning

confidence: 70%

Assembly processes of bacterial and fungal communities in metal(loid)s smelter soil

Yao

Sunahara

et al. 2023

Journal of Hazardous Materials

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Section: Effects Of Geochemical Characteristics On Bacterial and Fung...mentioning

confidence: 70%

Assembly processes of bacterial and fungal communities in metal(loid)s smelter soil

Yao

Sunahara

et al. 2023

Journal of Hazardous Materials

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“…Microbial-induced corrosion, together with scale accumulation, may damage the pipeline, resulting in pipe leakage or bursting. Biofilm formation can contribute to the acceleration of metallic pipe corrosion [114][115][116][117]217]. Pitting corrosion starts at the interface biofilm-metallic pipe because the water pH is modified by the release of metabolic degradation compounds [117].…”

Section: Biofilm Formation On Inner Pipe Wallmentioning

confidence: 99%

“…To be able to prevent pipe bursting, it is important to characterize the scale accumulated on the inner surface of the pipe and to obtain information about the various microorganism that colonize the biofilm. An extended study on scale taken from cast iron pipes that were in service for 22 to 26 years was carried out by Jia et al (2022) [217]. The pipes were affected by severe corrosion, burst, and leakage (Figure 9).…”

Section: Biofilm Formation On Inner Pipe Wallmentioning

confidence: 99%

The Behavior of Polymeric Pipes in Drinking Water Distribution System—Comparison with Other Pipe Materials

Stefan,

Bosomoiu,

Teodorescu

2023

Polymers

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The inner walls of the drinking water distribution system (DWDS) are expected to be clean to ensure a safe quality of drinking water. Complex physical, chemical, and biological processes take place when water comes into contact with the pipe surface. This paper describes the impact of leaching different compounds from the water supply pipes into drinking water and subsequent risks. Among these compounds, there are heavy metals. It is necessary to prevent these metals from getting into the DWDS. Those compounds are susceptible to impacting the quality of the water delivered to the population either by leaching dangerous chemicals into water or by enhancing the development of microorganism growth on the pipe surface. The corrosion process of different pipe materials, scale formation mechanisms, and the impact of bacteria formed in corrosion layers are discussed. Water treatment processes and the pipe materials also affect the water composition. Pipe materials act differently in the flowing and stagnation conditions. Moreover, they age differently (e.g., metal-based pipes are subjected to corrosion while polymer-based pipes have a decreased mechanical resistance) and are susceptible to enhanced bacterial film formation. Water distribution pipes are a dynamic environment, therefore, the models that are used must consider the changes that occur over time. Mathematical modeling of the leaching process is complex and includes the description of corrosion development over time, correlated with a model for the biofilm formation and the disinfectants–corrosion products and disinfectants–biofilm interactions. The models used for these processes range from simple longitudinal dispersion models to Monte Carlo simulations and 3D modeling. This review helps to clarify what are the possible sources of compounds responsible for drinking water quality degradation. Additionally, it gives guidance on the measures that are needed to maintain stable and safe drinking water quality.

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“…DWDSs are essential infrastructures to ensure drinking water safety, but iron pipes, such as unlined iron pipes (UIPs), are extensively used in DWDSs, and the corrosion of iron pipes produces abundant iron-dominated loose deposits, − which provides an enriching environment for long-chain perfluorinated compounds such as PFOA due to electrostatic adsorption. The formation of iron-dominated loose deposits may involve the following steps: first, iron pipe corrosion releases dissolved Fe(II) into the water, and then Fe(II) can be converted into Fe(III) oxides when encountering dissolved oxygen, NaClO, and other oxidants.…”

Section: Introductionmentioning

confidence: 99%

Perfluorooctanoic Acid (PFOA) Incorporated into Iron Particles Promoted the Formation of Disinfection Byproducts under Drinking Water Conditions

Zhuang

Shi

2023

Environ. Sci. Technol.

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Perfluorooctanoic acid (PFOA) is an emerging persistent organic pollutant that is frequently detected throughout the drinking water supply system. Here, we first found that PFOA could significantly increase the formation of disinfection byproducts (DBPs) in unlined iron pipes (UIPs) during the distribution process. The increased DBPs were not due to the reaction of PFOA itself with free chlorine, but the in situ formed Fe–PFOA complex played a key role. Notably, PFOA could enhance iron release from UIPs and was greatly incorporated into the iron particles to form Fe–PFOA complex. The •OH generated by the Fe–PFOA heterogeneous reaction could break large dissolved organic matter into small molecules that had higher reactivity with chlorine. In addition, DBP precursors with more aromatic structures were favorable for forming strong Fe−π interactions with Fe–PFOA complex, resulting in more •OH for the formation of aromatic DBPs. The cytotoxicity test showed that the viability of cells exposed to DBPs from UIPs with 100 ng/L PFOA was 46.9%, while that without PFOA was 67.91%. Overall, this study provided a new perspective on the risk of PFOA, with a focus not on PFOA itself but on its potential to promote DBP-associated toxicity in iron-based drinking water distribution pipes.

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Field study on the characteristics of scales in damaged multi-material water supply pipelines: Insights into heavy metal and biological stability

Cited by 21 publications

References 64 publications

Assembly processes of bacterial and fungal communities in metal(loid)s smelter soil

Assembly processes of bacterial and fungal communities in metal(loid)s smelter soil

The Behavior of Polymeric Pipes in Drinking Water Distribution System—Comparison with Other Pipe Materials

Perfluorooctanoic Acid (PFOA) Incorporated into Iron Particles Promoted the Formation of Disinfection Byproducts under Drinking Water Conditions

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