Microbial Community Dynamics during Remediation of Bauxite Residue

Research Focus

Sicheng specialises in eco-engineered soil formation in mine tailings (e.g. bauxite residue or Cu-Pb-Zn mine tailings). Microbial processes, chemical engineering and interdisciplinary techniques are applied to look for strategies that effectively neutralize the alkaline and sodic bauxite residue and accelerate its pedogenesis. The change of solution chemistry, mineral phases and other parameters during soil formation will also be investigated.

Biography

Sicheng previously majored in geology and geochemistry. His work varied from the origin of metal deposits, to characterisation of physical and chemical properties of mantle minerals, to melting of Mercury’s mantle under extremely reduced conditions. Sicheng has shown keen interests in the environmental sciences since he was an Undergraduate. The environmental topics Sicheng loves include but are not limited to the effects of contaminated water on both environment and people’s health, and the methods using interactions between microorganisms and minerals to remediate the mining environment.

After graduating from Brown University, Sicheng decided to pursue ‘the remediation of mine tailings’ as his future path. The experiences Sicheng has acquired in Earth Science will advantage him to launch his environmental sciences career at the University of Queensland.

Selected Publications

Wang, S., Xue C., Li Z. (2011) Geology and S-, Pb-isotopic Geochemistry of the Jiashi Sandstone-type Copper Deposit, Xinjiang, China. Geoscience, 25, 219-227.

Wang, S., Liu, X., Fei, Y., He, Q., Wang, H. (2012) In situ high-temperature powder X-ray diffraction study on the spinel solid solution (Mg1-xMnx) Cr2O4. Physics and Chemistry of Minerals, 39, 189-198.

Liu, X., Wang, S., He, Q., Chen, J., Wang, H., Li, S., Peng, F., Zhang, L., Fei, Y. (2012) Thermal elastic behavior of CaSiO3-walstromite: a powder X-ray diffraction study up to 900oC. American Mineralogist, 97, 262-267.

Chang, L., Liu, X., Liu, H., Kojitani, H., Wang, S. (2013) Vibrational mode analysis and heat capacity calculation of K2Si4O9-wadeite. Physics and Chemistry of Minerals, 40, 563-574.

Xiong, Z., Liu, X., Shieh, S. R., Wang, S., Chang, L., Tang, J., Hong, X., Zhang, Z., Wang, H. (2016) Some thermodynamic properties of larnite (β-Ca2SiO4) constrained by high T/P experiment and/or theoretical simulation. American Mineralogist, 101, 277-288.

Parman, S. W., Williams, K. B., O'Brien, H. P., Wang, S., Prissel, T. C., Parmentier, E. M., Hess, P. C., Head, J. W. (2015) Phase Equilibria Constraints on Mercury Melting Conditions. 46th Lunar and Planetary Science Conference, held 2015 in the Woodlands, Texas.

Parman, S.W., Parmentier, E.M., Wang, S. (2016) Crystallization of Mercury’s Sulfur-rich Magma Oceans. The 47th Lunar and Planetary Science Conference, held 2016 in the Woodlands, Texas.

Supervisor

Associate Professor Longbin Huang