Environmental Science and Pollution Research

, Volume 25, Issue 23, pp 22348–22355 | Cite as

Variation of preserving organic matter bound in interlayer of montmorillonite induced by microbial metabolic process

  • Yulian Zhao
  • Faqin Dong
  • Qunwei Dai
  • Gang Li
  • Jie Ma
Interface Effect of Ultrafine Mineral Particles and Microorganisms


This paper aimed to investigate the variation of preserving organic matter bound in the interlayer space of montmorillonite (Mt) induced by a microbe metabolic process. We selected Bacillus pumilus as the common soil native bacteria. The alteration of d 001 value, functional group, and C,N organic matter contents caused by bacteria were analyzed by XRD, FTIR, and elementary analyzer, respectively. XRD results showed that the d 001 value of montmorillonite increased with the concentration decreasing and decreased with the culture time increasing after interacting with bacteria indicating the interlayer space of montmorillonite was connected with the organic matter. The findings of long-term interaction by resetting culture conditions implied that the montmorillonite buffered the organic matter when the nutrition was enough and released again when the nutrition was lacking. The results of the elementary analyzer declared the content of organic matter was according to the d 001 value of montmorillonite and N organic matter which played a major impact. FTIR results confirmed that the Si-O stretching vibrations of Mt were affected by the functional group of organic matter. Our results showed that the montmorillonite under the influence of soil bacteria has a strong buffering capacity for preserving organic matter into the interlayer space in a short-term. It might provide critical implications for understanding the evolution process and the preservation of fertilization which was in the over-fertilization or less-fertilization conditions on farmland.


Montmorillonite Bacillus pumilus Interlayer spacing Organic matter preservation Metabolic process 



This work is supported by the National Natural Science Foundation of China (No. 41130746), the Natural Science Foundation of Southwest University of Science and Technology (No. 12ZX7121), and the Applied Basic Research Project of Science and Technology Department of Sichuan Province (No. 2016JY0213). We also are grateful for the help of the Analytical and Testing Center of Southwest University of Science and Technology.


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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Yulian Zhao
    • 1
    • 2
  • Faqin Dong
    • 1
    • 2
  • Qunwei Dai
    • 1
    • 2
  • Gang Li
    • 1
  • Jie Ma
    • 1
  1. 1.School of Environment and ResourceSouthwest University of Science and TechnologyMianyangChina
  2. 2.Key Laboratory of Solid Waste Treatment and Resource RecycleMinistry of EducationMianyangChina

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