1. School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, P. R. China
2. State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals, Changsha, Hunan 410083, P. R. China
3. Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha, Hunan 410083, P. R. China
4. Hunan Hanyang Environmental Protection Technology LTD., Changsha, Hunan 410152, P. R. China
5. China Minmetals Beryllium Co., LTD., Changsha, Hunan 410299, P. R. China
6. School of Environmental and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong 510006, P. R. China