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Modified SICP method to mitigate the effect of bio-clogging by excess protein from soybean crude urease extracts for biocementation process by Boyang Yan; Yundong Zhou; Chi Li; Shuang Shu; Yufeng Gao is a Engineering article available to read on EtoBox.

What is Modified SICP method to mitigate the effect of bio-clogging by excess protein from soybean crude urease extracts for biocementation process about?

Enzyme-induced carbonate precipitation (EICP) is an emerging soil improvement technique to precipitate in situ calcite carbonate to cement soil particles together via free urease. Soybean-derived urease is a potential alternative to commercial urease which could be applied in the large-scale application in practical engineering of EICP process because of its low cost. However, the soybean crude urease extracted by common methods contains various excess proteins, hindering the biocementation process. In this paper, the adverse effect of excess proteins in soybean crude urease was studied, and a modified soybean urease-induced carbonate precipitation (SICP) method is proposed to mitigate that adverse effect during the biocementation process. The test results have shown that the excess protein in soybean crude urease may lead to bioclogging problems which result in non-uniform CaCO 3 precipitation distribution and low UCS during the biocementation process. Furthermore, the modified SICP method can effectively mitigate the adverse impact of excess proteins and significantly improve the biocementation effect as compared with the conventional method.

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Author

Boyang Yan; Yundong Zhou; Chi Li; Shuang Shu; Yufeng Gao

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Engineering (Physical Sciences)