期刊
KSCE JOURNAL OF CIVIL ENGINEERING
卷 19, 期 6, 页码 1620-1625出版社
KOREAN SOCIETY OF CIVIL ENGINEERS-KSCE
DOI: 10.1007/s12205-014-0558-3
关键词
biomaterial; calcite precipitation; canavalia ensiformis extracts; urease
资金
- Construction Technology Innovation Program - Ministry of Land, Infrastructure and Transport of the Korean government
- Korea Institute of Geoscience and Mineral Resources (KIGAM) research fund [3212]
An extract of the indigenous plant jack bean (Canavalia ensiformis) was used to produce calcite, an effective biomaterial. The formation of calcite using this extract was compared, under stable conditions, to that using commercially available purified urease. Xray diffraction and scanning electron microscopy were employed to elucidate the mechanism of calcite formation from the crude plant extracts. The results revealed that urease in the jack bean crude extracts catalyzed the hydrolysis of urea in liquid-state cultures. The procedure described herein is a simple and useful method of calcite mineral precipitation that does not require cultivation of microorganisms or further purification of crude extracts. This study suggests that crude extracts of Canavalia ensiformis have the potential to be used in place of purified forms of urease during remediation of cracks and to increase the strength of materials.
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