Application of the kinetic and isotherm models for better understanding of the mechanism of biomineralization process induced by Purpureocillium lilacinum Y3

Xia, M, Bao, P, Liu, A, Shen, L, Yu, R, Liu, Y, Li, J, Wu, X, Huang, C, Chen, M, Qiu, G and Zeng, W 2019, 'Application of the kinetic and isotherm models for better understanding of the mechanism of biomineralization process induced by Purpureocillium lilacinum Y3', Colloids and Surfaces B: Biointerfaces, vol. 181, pp. 207-214.


Document type: Journal Article
Collection: Journal Articles

Title Application of the kinetic and isotherm models for better understanding of the mechanism of biomineralization process induced by Purpureocillium lilacinum Y3
Author(s) Xia, M
Bao, P
Liu, A
Shen, L
Yu, R
Liu, Y
Li, J
Wu, X
Huang, C
Chen, M
Qiu, G
Zeng, W
Year 2019
Journal name Colloids and Surfaces B: Biointerfaces
Volume number 181
Start page 207
End page 214
Total pages 8
Publisher Elsevier
Abstract Purpureocillium lilacinum can promote the biomineralization of jarosite by secreting extracellular polymeric substances (EPS), but the detailed mechanism is not clear. In this study, the biosynthesis process of jarosite induced by P. lilacinum Y3 and hypha cell surface characterization were investigated. X-ray diffraction (XRD) analysis indicated that P. lilacinum Y3 could induce the formation of jarosite crystal and enhance mineralization kinetics. The kinetic and isotherm models confirmed that the metal ions transferring from the solution to the mycelium surface was controlled by diffusion process and the active interfacial sites on hypha cell surface played a pivotal role in the biomineralization process. Furthermore, transmission electron microscopy (TEM) pictures illustrated that the P. lilacinum Y3 mainly induced the generation of mineral precipitate extracellularly, but not intracellularly. Three-dimensional excitation-emission matrix (3D-EEM) fluorescence spectrum results further revealed the extracellular compounds such as fulvic-acid-like and protein-like substances participated in the mineralization process.
Subject Hydrometallurgy
Keyword(s) Biomineralization
Kinetic and isotherm models
Purpureocillium lilacinumY3
Three-dimensional excitation-emission matrix fluorescence spectrum
Transmission electron microscopy
DOI - identifier 10.1016/j.colsurfb.2019.05.051
Copyright notice © 2019 Elsevier B.V. All rights reserved.
ISSN 0927-7765
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