干旱区生态环境知识资源中心(Arid): Field trial on use of soybean crude extract for carbonate precipitation and wind erosion control of sandy soil

Arid

DOI	10.1007/s11771-020-4549-x
	Field trial on use of soybean crude extract for carbonate precipitation and wind erosion control of sandy soil
	Gao Yu-feng; Meng Hao; He Jia; Qi Yong-shuai; Hang Lei
通讯作者	Gao, YF (corresponding author), Hohai Univ, Key Lab, Minist Educ Geomech & Embankment Engn, Nanjing 210098, Peoples R China.
来源期刊	JOURNAL OF CENTRAL SOUTH UNIVERSITY
ISSN	2095-2899
EISSN	2227-5223
出版年	2020
卷号	27 期号:11 页码:3320-3333
英文摘要	Wind erosion is a major cause of land desertification and sandstorm formation in arid and semi-arid areas. The objective of this study was to evaluate the potential of soybeans crude extract induced calcium carbonate precipitation (SICP) on reducing wind erosion risk of sandy soil. Field tests were carried out in Ulan Buh Desert, Ningxia Hui Autonomous Region, China. Results showed that the SICP method could significantly enhance the surface strength and wind erosion resistance of the topsoil. The optimal cementation solution (urea-CaCl2) concentration and spraying volume, according to experiments conducted on sandy land, were 0.2 mol/L and 4 L/m(2), respectively. Under this condition, the CaCO3 content was approximately 0.45%, the surface strength of sandy soil could reach 306.2 kPa, and the depth of wind erosion was approximately zero, after 30 d completion of SICP treatment. Soil surface strength declined with the increase of time, and long-term sand fixation effects of SICP treatment varied depending on topography. Whereas wind erosion in the top area of the windward slope was remarkable, sandy soils on the bottom area of the windward slope still maintained a relatively high level of surface strength and a low degree of wind erosion 12 month after SICP treatment. Scanning electron microscopy (SEM) tests with energy dispersive X-ray (EDX) confirmed the precipitation of CaCO3 and its bridge effect. These findings suggested that the SICP method is a promising candidate to protect sandy soil from wind erosion in desert areas.
英文关键词	soybeans crude extract induced calcium carbonate precipitation (SICP) biocementation sandy soil erosion controll field tests
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000601557600014
WOS关键词	INDUCED CALCITE PRECIPITATION ; DESERTIFICATION ; BIOCEMENTATION ; SURFACE ; CRUSTS ; IMMOBILIZATION ; STABILIZATION
WOS类目	Metallurgy & Metallurgical Engineering
WOS研究方向	Metallurgy & Metallurgical Engineering
来源机构	河海大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348978
作者单位	[Gao Yu-feng; Meng Hao; He Jia; Qi Yong-shuai; Hang Lei] Hohai Univ, Key Lab, Minist Educ Geomech & Embankment Engn, Nanjing 210098, Peoples R China
推荐引用方式 GB/T 7714	Gao Yu-feng,Meng Hao,He Jia,et al. Field trial on use of soybean crude extract for carbonate precipitation and wind erosion control of sandy soil[J]. 河海大学,2020,27(11):3320-3333.
APA	Gao Yu-feng,Meng Hao,He Jia,Qi Yong-shuai,&Hang Lei.(2020).Field trial on use of soybean crude extract for carbonate precipitation and wind erosion control of sandy soil.JOURNAL OF CENTRAL SOUTH UNIVERSITY,27(11),3320-3333.
MLA	Gao Yu-feng,et al."Field trial on use of soybean crude extract for carbonate precipitation and wind erosion control of sandy soil".JOURNAL OF CENTRAL SOUTH UNIVERSITY 27.11(2020):3320-3333.