Abstract
In this work, studies were conducted to determine the effectiveness of strengthening the structure of degraded soil using an EICP (Enzymatic Induced Calcite Precipitation) solution, that is, the method of enzymatically induced precipitation of calcium carbonate. In agriculture, it was used to strengthen sand in the desert zone. Sandstorms are among the natural disasters in the world, and it is important to provide an effective and environmentally friendly way to combat land desertification. The biogeotechnical method is based on the formation of calcium carbonate (CaCO3) by catalytic hydrolysis of urea using the urease enzyme. The solution contains 1M urea, 0.78M calcium chloride (CaCl2) and the enzyme urease with a concentration of 4 g/l.As a result of treatment with this solution, crystals were formed connecting sand particles to each other, during the formation of carbonate deposition, soil permeability decreases, ensuring the strength properties of the soil. However, this is costly due to the need for a large amount of the urease enzyme used to make the solution created based on the method. The enzyme alone accounts for more than 95% of the cost of preparing the solution. Therefore, in order to further improve the research work, it is necessary to find a natural material that replaces the enzyme urease. The presence of ecological compatibility of herbaceous plant seeds and enzyme treatment methods has shown the effectiveness of reducing desertification.
01 Introduction
The full text of the article is available for download in PDF format on the right panel.
02 References
- 1. Han,Z.,Wang,T., Dong,Z., Hu, Y., Yao, Z..Chemical stabilization of mobile dunefields along a highway in the Taklimakan Desert of China.,- 2007,J Arid Environ Vol. 68, pp.260–270.https://doi.org/10.1016/j.jaridenv.2006.05.007
- 2. Acting locally cooperating regionally. Combating desertification in Central Asia//Published by: Deutsche Gesellschaft fürTechnische Zusammenarbeit (GTZ) GmbH –German Technical Cooperation.- 2007, Vol.20.
- 3.Acсанова, M. A. (2015). Public policy and model of sustainable development in the Republic of Kazakhstan. Asian Social Science, 11(6), 237. https://doi.10.5539/ass.v11n6p237
- 4.Knorr,B,.Enzyme-induced carbonate precipitation for the mitigation of fugitive
- dust. Masters Thesis, Arizona State University, Tempe, AZ, USA, 2014.
- 5.Nemati, M,G.Voordouw. Modification of porous media permeability, using
- calcium carbonate produced enzymatically in situ, Enzyme Microb. Technol,-2003, Vol.33
- pp.635–642.https://doi.org/10.1016/S0141-0229(03)00191-1
- 6. Maleki,M,S, Ebrahimi F, Asadzadeh, M. EmamTabriziPerformance of microbial-induced carbonate precipitation on wind erosion control of sandy soilInt. J. Environ. Sci. Technol,-2016,Vol.13 pp. 937–944. http://dx.doi.org/10.1007/s13762-015-0921-z
- 7. Yasuhara,H.,Hayashi KM, Okamura. Evolution in mechanical and hydraulic
- properties of calcite-cemented sand mediated by biocatalyst, Geo-FrontiersAdvances, Geotechnical Engineering, -2011,pp.3984–3992.https://doi.org/10.1061/41165(397)407
- 8. Yasuhara,H.,Neupane D.K, Hayashi.M, Okamura. Experiments and predictions
- of physical properties of sand cemented by enzymatically-induced carbonate
- precipitation, Soils Found,-2012.Vol.52(3) pp.539–549. https://doi.org/10.1016/j.sandf.2012.05.011
- 9.Neupane,D.,Yasuhara.H, Kinoshita.N, Putra,H. Distribution of grout material
- within 1-m sand column in insitu calcite precipitation technique, Soils Found,-2015, pp.1512–1518. https://doi.org/10.1016/j.sandf.2015.10.015
- 10. Choi,S.G, Chang.I, Lee.M, Lee. J.-H.; Han, J.-T.; Kwon, T.-H. Review on Geotechnical Engineering Properties of Sands Treatedby Microbially Induced Calcium Carbonate Precipitation (MICP) and Biopolymers. Constr. Build. Mater. 2020, 246, 118415. https://doi.org/10.1016/j.conbuildmat.2020.118415
- 11.Almajed,A., Abbas,H., Arab,M., Alsabhan,A., Hamid,W., Al-Salloum,Y. Enzyme-Induced Carbonate Precipitation (EICP)-Based Methods for Ecofriendly Stabilization of Different Types of Natural Sands. J.Clean. Prod.-2020, P.274, 122627. https://doi.org/10.1016/j.jclepro.2020.122627
- 12. Miftah, A., Tirkolaei,H.K., Bilsel,H. Bio-Precipitation of CaCO3for Soil Improvement: A Review. IOP Conf. Ser. Mater. Sci. Eng.2020, P.800, 012037 DOI 10.1088/1757-899X/800/1/012037
- 13. Almajed, A.A. Enzyme Induced Carbonate Precipitation (EICP) for Soil Improvement. Ph.D. Thesis, Arizona State University,Phoenix, AZ, USA, 2017.
- 14. Gupta,R., Kienzler,K., Martius,C., Mirzabaev,A., Oweis,T., dePauw,E., Qadir,M., Shideed,K., Sommer,R., Thomas,R., Sayre,K., Carli,C., Saparov,A., Bekenov,M., Sanginov,S., Nepesov,M., and Ikramov,R. Research prospectus: a vision for sustainable land management research in Central Asia. //Sustainable Agriculture in Central Asia and the Caucasus,-2009, P. 81.
- 15. Pratama,G.B, Yasuhara,H., Kinoshita,N., Putra,H. Application of Soybean Powder as Urease Enzyme Replacement on EICP Method for Soil Improvement Technique. IOP Conf. Ser. Earth Environ. Sci,2021, P.622. 012035 DOI: 10.1088/1755-1315/622/1/012035
- 16. Putra,H.,Yasuhara,H.,andKinoshita,N. "ApplicabilityofNaturalZeolitefor NH-Forms Removal in Enzyme-Mediated Calcite Precipitation Technique". -2017.Geosciences, 7(3),P.61.
- 17. Putra,H.,Yasuhara,H.,Kinoshita,N.,Neupane,D.,Lu,C.W. "EffectofMagnesium as Sustitute Material in Enzyme-Mediated Calcite Precipitation for Soil-Improvement Technique "Frontiers in Bioengineering and Biotechnology, -2016."V.4, Article37.http://dx.doi.org/10.3389/fbioe.2016.00037
- 18. Putra,H., Yasuhara,H., Kinoshita andHirata, A.“Optimization of Enzyme-Mediated Calcite Precipitation as a Soil-Improvement Technique The Effect of Aragonite and Gypsum on the Mechanical Properties of Treated Sand.” Crystals 2017, 7(59)
- 19. Zhao,Z.,Hamdan,N.,Shen,L.,Nan,H.,Almajed,A.,Kavazanjian,E.,He,X."BiomimeticHydrogelComposites for Soil Stabilization and Contaminant Mitigation". Environmental Science & Technology, -2016. 50(22), 12401-12410.59