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Self-healing bioconcrete based on non-axenic granules: A potential solution for concrete wastewater infrastructure

Journal Article


Abstract


  • This paper summarized the metabolic pathways, mechanisms, and performance of various microbial induced calcite precipitation (MICP) microorganisms as self-healing agents for the development of self-healing bioconcrete. Despite the remarkable progress achieved to date, the high costs involved in the cultivation and encapsulation of the axenic cultures have led to a shift of research focus towards the use of non-axenic microbial cultures. They have superior benefits as self-healing agents in terms of easy cultivation and low cost. Granular sludge was widely used in wastewater treatment. Considering the high need for concrete-based wastewater infrastructure, granular sludge cultivated using wastewater has the potential to develop bioconcrete for sewer systems and wastewater treatment plants. To achieve large-scale application, future research should enhance the understanding of the long-term performances and develop systematic and comparable evaluation methods.

Publication Date


  • 2021

Citation


  • Chetty, K., Xie, S., Song, Y., McCarthy, T., Garbe, U., Li, X., & Jiang, G. (2021). Self-healing bioconcrete based on non-axenic granules: A potential solution for concrete wastewater infrastructure. Journal of Water Process Engineering, 42. doi:10.1016/j.jwpe.2021.102139

Scopus Eid


  • 2-s2.0-85106213090

Volume


  • 42

Abstract


  • This paper summarized the metabolic pathways, mechanisms, and performance of various microbial induced calcite precipitation (MICP) microorganisms as self-healing agents for the development of self-healing bioconcrete. Despite the remarkable progress achieved to date, the high costs involved in the cultivation and encapsulation of the axenic cultures have led to a shift of research focus towards the use of non-axenic microbial cultures. They have superior benefits as self-healing agents in terms of easy cultivation and low cost. Granular sludge was widely used in wastewater treatment. Considering the high need for concrete-based wastewater infrastructure, granular sludge cultivated using wastewater has the potential to develop bioconcrete for sewer systems and wastewater treatment plants. To achieve large-scale application, future research should enhance the understanding of the long-term performances and develop systematic and comparable evaluation methods.

Publication Date


  • 2021

Citation


  • Chetty, K., Xie, S., Song, Y., McCarthy, T., Garbe, U., Li, X., & Jiang, G. (2021). Self-healing bioconcrete based on non-axenic granules: A potential solution for concrete wastewater infrastructure. Journal of Water Process Engineering, 42. doi:10.1016/j.jwpe.2021.102139

Scopus Eid


  • 2-s2.0-85106213090

Volume


  • 42