Li Dedong

Institute of Geology and Geophysics,

Chinese Academy of Sciences.

Tel: 86-10-82998424

Research interest

(1) CO2 geological storage

Do numerical simulation using TOUGH2 and ECO2N code to study geofluid spatio-temporal evolvement after CO2 injection into underground aquifers.

Coupling advanced solubility model, density model and phase equilibrium speciation equilibrium model with TOUGH2 code to develop program for numerical simulation.

(2) Rock-water interaction

Multi-phases multi-components system phase equilibrium and speciation equilibrium in wide temperature and pressure range.

Using and develop Pitzer theory and Helgeson theory to study properties of gas, minerals and aqueous solution in high temperature and high pressure.

Education and work experience

1997.8~2001.7

College of Metallurgical Science and Engineering, Central South University, Changsha, Hunan, China. B. S. in nonferrous metallurgy.

Graduate design title: Design of a 1500t/y sodium pyroantimonate manufacture from antimony concentrate plant.

Graduate thesis title: Study on tin concentrate deoxidization using carbon powder in pyrometallurgical processes.

2001.9~2004.3

National engineering research center for rare earth materials (NERC-REM), General research institute for nonferrous metals (GRINM), Beijing, China. M. S. in hydrometallurgy.

Master thesis title: Study on impurity behaviors in processes of leaching Bastnaesite

and extraction/stripping of cerium(IV)

Advisor: Li Hongwei

2004.3~2005.8

Assistant engineer in National engineering research center for rare earth materials (NERC-REM), General research institute for nonferrous metals (GRINM), Beijing, China.

2005.8~2008.6

Institute of Geology and Geophysics, Chinese Academy of Sciences. Ph.D. in geochemistry.

Dissertation title: Gas-water-salt-rock system phase equilibrium and speciation equilibrium and its application in CO2 geological storage numerical simulation.

Advisor: Duan Zhenhao

Publications

(1) Li Dedong, and Duan Zhenhao, (2007) The speciation equilibrium coupling with phase equilibrium in the H2O-CO2-NaCl system from 0 to 250 °C, from 0 to 1000 bar and from 0 to 5 molality of NaCl. Chemical Geology., 244 (3-4): 730-751.

(2) Duan Zhenhao and Li Dedong, (2008) Phase equilibrium coupling with chemical equilibrium in the H2O-CO2-NaCl-CaCO3 system from 0 to 250 °C, 1 to 1000 bar and 0 to 5 molality of NaCl. (In preparation)

(3) Duan Zhenhao, Hu Jiawen, Li Dedong, and Mao Shide, (2007) The Density of the CO2-H2O and CO2-H2O-NaCl systems up to 647K and 100 MPa. Submitted to Energy & Fuels.

(4) Li Dedong, Long Zhiqi, Li Hongwei and Zhang Guocheng. (2004) Leaching Behaviors of Ce (4+) and Fe(3+) Ions in Bastnaesite with Sulfuric Acid. Chinese Journal of Rare Metals, 28 (2): 452-454

(5) Zhu Zhaowu, Zhao Na, Long Zhiqi, Li Dedong, Cui Dali and Zhang Guocheng. (2005) New Environment-Friendly Approach for Bastnasite Metallurgic Treatment (I): Extraction of Tetravalent Cerium from Sulphuric Acid Medium with Di(2-ethylhexyl) Phosphoric Acid. Journal of Rare Earths, 23(2): 178-182

(6) Peng Xinlin. Zhao Na. Zhu Zhaowu. Long Zhiqi. Li Dedong, Huang Xiaowei and Li Hongwei (2006) Electrical Conductivity and FT-IR Spectrum of Microemulsion HEHEHP Saponified with Ammonia. Chinese Journal of Rare Metals, 30(4): 480-483

Patents

(1) Long zhiqi, Cui Dali, Li Dedong, Huang Xiaowei and Zhang Guocheng. (2002) A method for preparation of high purity Ceric Ammonium Nitrate (CAN) in electrolysis oxidation crystallization process. CN02125765.5 ZL02125765.5

(2) Zhang Guocheng, Huang Xiaowei, Long Zhiqi, Li Hongwei and Li Dedong. (2002) A kind of beneficiation process for high iron rare earch ore. CN02159733.2

(3) Zhang Guocheng, Long Zhiqi, Li Dedong, Li Hongwei, Huang Xiaowei, Zhu Zhaowu, Peng Xinlin, Li Minglai and Cui Dali. (2004) A kind of extraction method for stripping Cerium from Fluorine-bearing Cerium-loaded organic phase and purity Cerium. CN200410102756.3

(4) Zhu Zhaowu, Long Zhiqi, Huang Xiaowei, Li Dedong, Li Hongwei, Cui Dali, Zhao Na and Zhang Guocheng. (2004) A kind of method for removal of Fluorine from organic phase produced by Bastnaesite oxdized roast, sulfuric acid leaching and extration. CN200410070199.1 ZL200410070199.1