干旱区生态环境知识资源中心(Arid): Stimulation of Native Microorganisms for Improving Loose Salty Sand

Arid

DOI	10.1080/01490451.2019.1579876
	Stimulation of Native Microorganisms for Improving Loose Salty Sand
	Kalantary, Farzin; Govanjik, Dariush Abbasi; Gonbad, Mahdi Safdari Seh
通讯作者	Kalantary, Farzin
来源期刊	GEOMICROBIOLOGY JOURNAL
ISSN	0149-0451
EISSN	1521-0529
出版年	2019
卷号	36 期号:6 页码:533-542
英文摘要	Prolonged droughts and excessive water harvesting in western Asia has accelerated desertification and caused longer dry seasons of salt lakes. The Aral Sea experience has proven that dust from saline soil is a serious health issue. Various stabilization techniques to reduce wind erosion have been used in the past. However, in recent years, a potentially viable method has been developed; microbial induced calcite precipitation (MICP) has been introduced as a method of soil stabilization, though its effectiveness in saline soils remains to be examined. The effect of salt content in loose sandy soil on calcite precipitation of calcite through stimulation of native bacteria is investigated in this article. Samples with salinity up to 30% salt content were prepared and treated with different culture medium compounds. A number of tests were used to evaluate the effect of the mentioned parameters. The results show that improvement increases with increasing salinity up to 5% salt, and further increase in salinity reduces the effectiveness of improvement. It is also shown that the addition of urea in the culture medium has a significant effect on the urea hydrolysis which resulted in a five-fold increase in compressive strength. Four native strains of halotolerant urease-positive bacteria were also identified.
英文关键词	Microbial induced calcite precipitation (MICP) native bacteria saline soil culture medium soil stabilization
类型	Article
语种	英语
国家	Iran
收录类别	SCI-E
WOS记录号	WOS:000467885400006
WOS关键词	CALCIUM-CARBONATE PRECIPITATION ; ENVIRONMENTAL-FACTORS ; BIO-CEMENTATION ; SOIL PARTICLES ; SHEAR-STRENGTH ; WASTE ; IMPROVEMENT ; VELOCITIES ; BACTERIA ; BIOLOGY
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215997
作者单位	KN Toosi Univ Technol, Fac Civil Engn, Tehran, Iran
推荐引用方式 GB/T 7714	Kalantary, Farzin,Govanjik, Dariush Abbasi,Gonbad, Mahdi Safdari Seh. Stimulation of Native Microorganisms for Improving Loose Salty Sand[J],2019,36(6):533-542.
APA	Kalantary, Farzin,Govanjik, Dariush Abbasi,&Gonbad, Mahdi Safdari Seh.(2019).Stimulation of Native Microorganisms for Improving Loose Salty Sand.GEOMICROBIOLOGY JOURNAL,36(6),533-542.
MLA	Kalantary, Farzin,et al."Stimulation of Native Microorganisms for Improving Loose Salty Sand".GEOMICROBIOLOGY JOURNAL 36.6(2019):533-542.