STUDY OF THE INTERACTION BETWEEN BENTONITE AND A STRAIN OF BACILLUS   MUCILAGINOSUS

doi:10.1346/CCMN.2011.0590511

CORC > 北京大学 > 地球与空间科学学院

	STUDY OF THE INTERACTION BETWEEN BENTONITE AND A STRAIN OF BACILLUS MUCILAGINOSUS
	Zhu, Yun ; Li, Yan ; Lu, Anhuai ; Wang, Haoran ; Yang, Xiaoxue ; Wang, Changqiu ; Cao, Weizheng ; Wang, Qinghua ; Zhang, Xiaolei ; Pan, Danmei ; Pan, Xiaohong
刊名	粘土与粘土矿物
	2011
关键词	Bacillus mucilaginosus Bentonite Clay Minerals Microbe-mineral Interaction Silicate Bacteria Smectite MICROBIAL REDUCTION ILLITE REACTION SMECTITE MINERALS CLAY FLOCCULATION DISSOLUTION NONTRONITE BACTERIUM IRON(III)
DOI	10.1346/CCMN.2011.0590511
英文摘要	Mineral-microbe interactions are widespread in a number of environmental processes such as mineral weathering, decomposition, and transformation. Both clay minerals and silicate-weathering bacteria are widely distributed in nature, and the latter contribute to weathering, diagenesis, and mineralization of major rock-forming minerals. The purpose of this study was to observe changes in the chemical composition and structure, especially the phase transformation, of smectite after processing by a silicate-weathering bacterium. The interaction between Bacillus mucilaginosus and bentonite was studied using custom culture media. Results from Inductively Coupled Plasma-Atomic Emission Spectrometry revealed that the bacterium promoted release of Si and Al from solid bentonite to solution. Concomitantly, the K and Fe contents of the mineral increased as shown by X-ray photoelectron spectroscopy results. After interaction with the bacterium, the montmorillonite underwent a possible structure transformation to smectite, as indicated by the emergence of a new weak peak (d = 9.08 angstrom) shown by X-ray diffraction patterns. The mineralogical changes were also demonstrated by the decrease in the specific surface area of the mineral from 33.0 to 24.0 m(2)/g (these lower values for SSA of bentonite are related to the particle size of the smectite examined (120-160 mesh) and the weakened absorption bands in Al-O-H and Si-O-Si vibrations by Micro Fourier-transform infrared spectroscopy. The morphology changes in the bacteria observed by environmental scanning electron microscopy and atomic force microscopy revealed an obvious growth of the flagella in the presence of bentonite.; Chemistry, Physical; Geosciences, Multidisciplinary; Mineralogy; Soil Science; SCI(E); EI; 3; ARTICLE; 5; 538-545; 59
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/311194]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Zhu, Yun,Li, Yan,Lu, Anhuai,et al. STUDY OF THE INTERACTION BETWEEN BENTONITE AND A STRAIN OF BACILLUS MUCILAGINOSUS[J]. 粘土与粘土矿物,2011.
APA	Zhu, Yun.,Li, Yan.,Lu, Anhuai.,Wang, Haoran.,Yang, Xiaoxue.,...&Pan, Xiaohong.(2011).STUDY OF THE INTERACTION BETWEEN BENTONITE AND A STRAIN OF BACILLUS MUCILAGINOSUS.粘土与粘土矿物.
MLA	Zhu, Yun,et al."STUDY OF THE INTERACTION BETWEEN BENTONITE AND A STRAIN OF BACILLUS MUCILAGINOSUS".粘土与粘土矿物 (2011).