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논문 기본 정보

자료유형
학술저널
저자정보
Armstrong I. Omoregie (Swinburne University of Technology) Enzo A. Palombo (Swinburne University of Technology) Peter M. Nissom (Swinburne University of Technology)
저널정보
대한환경공학회 Environmental Engineering Research Environmental Engineering Research 제26권 제6호
발행연도
2021.12
수록면
133 - 148 (16page)

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초록· 키워드

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Ureolysis-driven microbially induced carbonate precipitation (MICP) is a naturally occurring process facilitated through microbial activities and biogeochemical reactions to produce calcium carbonate (CaCO₃) mineral. MICP serves as an alternative ground improvement binder method to conventional technologies which is sustainable, requires low energy for its treatment process, results in a minimal carbon footprint and could offer economic benefits. In the last two decades, MICP has drawn great interest from the scientific community because of its practicality to stabilize granular soils, repair concrete cracks and remediate heavy metals. To obtain successful MICP application, it is vital to understand the conditions that favor its process. This paper, therefore, provides an overview of literature on CaCO₃ precipitation mediated by ureolysis-driven MICP and its mechanism. The review includes a discussion on sources of urease enzyme from microorganisms used to induce CaCO₃ crystal formation required for implementation of MCIP for ground improvement. Moreover, the key factors that influence the outcome of MICP and bio-engineering testing methods typically used to evaluate MICP performance are also highlighted. Finally, this review also provides insight on the current drawbacks (i.e. ammonium production, scale-up bioprocess and treatment cost) affecting MICP technology and recommendations for future consideration.

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ABSTRACT
1. Introduction
2. Microbially Induced Carbonate Precipitation
3. Mechanism of Ureolysis-Driven MICP
4. Microbial Urease and Its Sources
5. Key Factors Influencing the Performance of MICP
6. Testing Methods for Evaluation of MICP Performance
7. Current Challenges and Perspectives on ureolysis-driven MICP
8. Conclusions
References

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