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Granules-based bioconcrete: a sustainable strategy towards sewer corrosion

Author(s): Jing Wei, Philip Bond, Zhiguo Yuan and Guangming Jiang
Paper category: Proceedings
Book title: Proceedings of the Final Conference of RILEM 253-MCI Microorganisms-Cementitious Materials Interactions Volume I
Editor(s): Alexandra Bertron and Henk Jonkers
ISBN: 978-2-35158-207-7 (Set)
ISBN: 978-2-35158-209-1 (Volume1)
e-ISBN: 978-2-35158-206-0
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 137-142
Total Pages: 288
Language : English

Abstract: The highly corrosive environment in sewer systems makes concrete pipes vulnerable due to microbially induced corrosion, and repairing the corroded pipes takes efforts. Many ongoing efforts have been made to prolong the service time of concrete pipes, among which self-healing bioconcrete seems to be able to stand out because of the diverse nutrients and organic matters available in sewer systems for the embedded microorganisms. However, the high cost of bioconcrete caused by axenic culture and encapsulation severely restricts the wide application of microbial self-healing concrete. To overcome this challenge, a novel type of granules-based bioconcrete is proposed in this paper. A deep insight into granules-based bioconcrete was provided with sewer corrosion as the background. The use of both specifically cultivated granules and granules directly from wastewater treatment plants (WWTPs) were discussed. It was found that except for Anammox, all the other types of granules are feasible in terms of calcite precipitation metabolisms. Among them, granules incorporating both nitrate-reducing bacteria (NRB) and sulfate-reducing bacteria (SRB) are more promising than others due to the possible synergistic effects between SRB and NRB. Future research on durability, granules of better performance and economic is still required to make granules-based bioconcrete more sustainable towards sewer corrosion.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00

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