Experimental Study on the Effect of Calcium Sources on Enzyme-induced Carbonate Precipitation

被引：0
|
作者：
Zhang J. [1 ,2 ]
Li B. [1 ]
Bian H. [1 ,2 ]
Han Y. [1 ]
Wang X. [1 ]
机构：
[1] School of Civil Engineering and Architecture of Henan University, Kaifeng
[2] Kaifeng Technology Research Center of Engineering on Soil Modification and Restoration, Kaifeng
来源：
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2022年 / 30卷 / 05期
关键词：
Calcium sources; Optimal ratio; Production rates of calcium carbonate; Solution environment; Soybean urease induced calcium carbonate precipitation;
D O I：
10.16058/j.issn.1005-0930.2022.05.015
中图分类号：
学科分类号：
摘要：
Enzyme-induced calcium carbonate precipitation technology is an environmentally-friendly and efficient soil reinforcement technique, the type of calcium sources may affect its reinforcement effect. Three kinds of calcium sources, calcium chloride, calcium acetate and calcium lactate, were selected for EICP test in solution environment with the test time of 3d. The effect of gel solution concentration, pH value, concentration ratio of urea-calcium salt and volume ratio of enzyme solution to gel solution on calcium carbonate production were studied by single factor analysis, the optimum ratio of different calcium sources was obtained according to productions of calcium carbonate, and the crystal type and micro-morphology of precipitation products were analyzed by scanning electron microscopy and X-ray diffraction tests under different calcium sources. The results showed that the optimal ratio of different calcium sources varied in the solution environment, and the production rates of calcium carbonate of calcium chloride, calcium acetate and calcium lactate were 72.5%, 68.8% and 71.6%, respectively under the optimal ratio, and calcium chloride was determined as the optimal calcium source. The crystal type and micro-morphology of precipitation products with different calcium sources were different, when calcium chloride and calcium acetate were used as calcium sources, only calcite was obtained, while the crystals formed by calcium lactate as calcium source were calcite and vaterite, calcium carbonate crystals formed under different calcium sources were all spherical, and the crystals generated by calcium chloride were the most smooth and regular. © 2022, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
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页码：1245 / 1255
页数：10
相关论文
共 30 条
  • [1] Qian Chunxiang, Wang Anhui, Wang Xin, Advances of soil improvement with bio-grouting, Rock and Soil Mechanics, 36, 6, pp. 1537-1548, (2015)
  • [2] Ivanov V, Chu J., Applications of microorganisms to geotechnical engineering for bioclogging biocementation of soil in situ[J], Reviews in Environmental Science and Bio/Technology, 7, 2, pp. 139-153, (2008)
  • [3] Maleki M, Ebrahimi S, Asadzadeh F, Et al., Performance of microbial-induced carbonate precipitation on wind erosion control of sandy soil[J], International Journal of Environmental Science and Technology, 13, 3, pp. 937-944, (2016)
  • [4] Zhao Zhifeng, Shao Guanghui, Experimental study on marine silt reinforcement by microbial induced calcium precipitation, Journal of Basic Science and Engineering, 29, 1, pp. 231-238, (2021)
  • [5] Sun Xiaohao, Miao Linchang, Tong Tianzhi, Et al., Experimental study of solidifying sand using microbial-induced calcium carbonate precipitation, Rock and Soil Mechanics, 38, 11, pp. 3225-3230, (2017)
  • [6] Li Chi, Wang Shuo, Wang Yanxing, Et al., Field experimental study on stability of bio-mineralization crust in the desert, Rock and Soil Mechanics, 40, 4, pp. 1291-1298, (2019)
  • [7] Xu Yanbo, Qian Chunxiang, Lu Zhaowen, Remediation of heavy metal contaminated soils by bacteria biomineralization, Chinese Journal of Environmental Engineering, 7, 7, pp. 2763-2768, (2013)
  • [8] Mitchell J K, Santamarina J C., Biological considerations in geotechnical engineering[J], Journal of Geotechnical and Geoenvironmental Engineering, 131, 10, pp. 1222-1233, (2005)
  • [9] Dilrukshi R A N, Watanabe J, Kawasaki S., Sand cementation test using plant-derived urease and calcium phosphate compound[J], Materials Transactions, 56, 9, pp. 1565-1572, (2015)
  • [10] Nam I H, Chon C M, Jung K Y, Et al., Calcite precipitation by ureolytic plant(canavalia ensiformis) extracts as effective biomaterials[J], KSCE Journal of Civil Engineering, 19, 6, pp. 1620-1625, (2014)
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