干旱区生态环境知识资源中心(Arid): Microbially Induced Magnesium Carbonate Precipitation and its Potential Application in Combating Desertification

Arid

DOI	10.1080/01490451.2021.1900461
	Microbially Induced Magnesium Carbonate Precipitation and its Potential Application in Combating Desertification
	Zhang, Menglong; Zhao, Liang; Li, Gen K.; Zhu, Chen; Dong, Sijia; Li, Zibo; Tang, Chaosheng; Ji, Junfeng; Chen, Jun
通讯作者	Zhao, L (corresponding author), Nanjing Univ, Sch Earth Sci & Engn, Key Lab Surficial Geochem, Minist Educ, Nanjing 210023, Jiangsu, Peoples R China.
来源期刊	GEOMICROBIOLOGY JOURNAL
ISSN	0149-0451
EISSN	1521-0529
出版年	2021
卷号	38 期号:6 页码:549-560
英文摘要	This study investigated the reaction processes of microbially induced magnesium carbonate precipitation (MIMP) with Sporosarcina pasteurii (ATCC 11859) and evaluated its feasibility for controlling desertification in the desert areas in Northwest China. We explored systematically bacterial growth curves, mineralogy of precipitates, and relative chemical conversion efficiencies of the reaction using magnesium carbonate and bacterial urea hydrolysis with Sporosarcina pasteurii. We also compared the results of MIMP with the previously, well-studied microbially induced calcium carbonate precipitation (MICP). Our results indicate that excess Mg2+ motivated bacterial growth slightly. Magnesium carbonate precipitates appeared as nesquehonite, Mg-amorphous calcium carbonate, and Mg-rich calcite. The relative chemical conversion efficiency was higher in Mg medium than in Ca medium. We next evaluated the potential of using MIMP to mitigate desertification. We validated our results using the Mg-rich solution obtained by dissolving abandoned Mg salts that formed from the potassium salt plants nearby salt lakes. MIMP could potentially overcome shortcomings of traditional sand fixing methods, and was particularly suitable for controlling desertification in desert areas in Northwest China where there are abundant Mg resources. If MIMP works at field scales, this approach would further benefit ecosystem reconstruction because MIMP has main products of organic nutrients and ammonia, which would facilitate the development of biomass and soils. Overall, this work provides new insights into MIMP and its geoengineering potential in controlling desertification.
英文关键词	Desertification control magnesium carbonate MICP Sporosarcina pasteurii
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000631456300001
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
来源机构	南京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350406
作者单位	[Zhang, Menglong; Zhao, Liang; Zhu, Chen; Li, Zibo; Tang, Chaosheng; Ji, Junfeng; Chen, Jun] Nanjing Univ, Sch Earth Sci & Engn, Key Lab Surficial Geochem, Minist Educ, Nanjing 210023, Jiangsu, Peoples R China; [Li, Gen K.; Dong, Sijia] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA
推荐引用方式 GB/T 7714	Zhang, Menglong,Zhao, Liang,Li, Gen K.,et al. Microbially Induced Magnesium Carbonate Precipitation and its Potential Application in Combating Desertification[J]. 南京大学,2021,38(6):549-560.
APA	Zhang, Menglong.,Zhao, Liang.,Li, Gen K..,Zhu, Chen.,Dong, Sijia.,...&Chen, Jun.(2021).Microbially Induced Magnesium Carbonate Precipitation and its Potential Application in Combating Desertification.GEOMICROBIOLOGY JOURNAL,38(6),549-560.
MLA	Zhang, Menglong,et al."Microbially Induced Magnesium Carbonate Precipitation and its Potential Application in Combating Desertification".GEOMICROBIOLOGY JOURNAL 38.6(2021):549-560.