globalchange  > 气候变化事实与影响
DOI: 10.1016/j.watres.2018.11.083
Scopus ID: 2-s2.0-85058209367
Distinct microbially induced concrete corrosion at the tidal region of reinforced concrete sewers
Author: Song Y.; Tian Y.; Li X.; Wei J.; Zhang H.; Bond P.L.; Yuan Z.; Jiang G.
Source Publication: Water Research
ISSN: 431354
Publishing Year: 2019
pages begin: 392
pages end: 402
Language: 英语
Keyword: Concrete ; Corrosion ; Microbial community ; Mineral liberation analysis ; Sewer
Scopus Keyword: Bacteria ; Bacteriology ; Concrete construction ; Concrete pipe ; Concrete products ; Concretes ; Deterioration ; Minerals ; Reinforced concrete ; RNA ; Sewers ; Acidophilic heterotrophic bacteria ; Chemical characteristic ; Concrete corrosion ; Corrosion monitoring ; Heterotrophic bacterias ; Microbial communities ; Mineral liberation analysis ; Potential capability ; Corrosion ; calcium sulfate ; concrete ; mineral ; RNA 16S ; sulfuric acid ; analytical method ; bacterium ; concrete ; corrosion ; methodology ; microbial community ; microbial ecology ; physicochemical property ; reinforced concrete ; wastewater ; wastewater treatment ; amplicon ; analytic method ; Article ; Bacillus ; bacterial colonization ; heterotroph ; microbial community ; microbial corrosion ; Mycobacterium ; nonhuman ; pH ; physical chemistry ; priority journal ; RNA sequence ; sewer ; waste water ; Mycobacterium
English Abstract: Microbially induced concrete corrosion (MICC) is a major deterioration affecting sewers worldwide. MICC is not uniform on sewer inner walls and often occurs at hot spots such as crown and tidal regions, which are critical to determine sewer service life. Especially, concrete corrosion in tidal regions is complicated due to the fluctuation of wastewater levels and the hydraulic scouring effects. The traditional methodology of corrosion monitoring also limits the study of the tidal corrosion. In this study, by using a combination of various advanced mineral analytical techniques and culture-independent 16S rRNA gene amplicon sequencing, the development of corrosion, the formation of corrosion products and the variation of microbial communities in tidal regions were investigated systematically. The physical-chemical characteristics in tidal regions varied with the distance from the wastewater surface. Above the wastewater, more severe corrosion was detected with a closer distance to wastewater, producing gypsum as the major corrosion products. The microbial succession in tidal regions occurred, with the coexistence of conventional autotrophic SOB and acidophilic heterotrophic bacteria initially, and shifting to the predominant colonization of Mycobacterium when pH reached around 1. The heterotrophic bacteria, i.e. Mycobacterium and Bacillus, were likely responsible for the observed corrosion due to the potential capability in generating sulfuric acid. The applications of advanced mineral and microbial analytical techniques were demonstrated effective in improving the understanding of concrete sewer corrosion. © 2018 Elsevier Ltd
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Document Type: 期刊论文
Appears in Collections:气候变化事实与影响

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Affiliation: Advanced Water Management Centre, The University of Queensland, St. Lucia, QLD 4072, Australia; School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China

Recommended Citation:
Song Y.,Tian Y.,Li X.,et al. Distinct microbially induced concrete corrosion at the tidal region of reinforced concrete sewers[J]. Water Research,2019-01-01
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