a School of Environmental Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116; b School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116; c School of Chemical Engineering, Northwest University, Xi'an 710069
Received:2012-07-21
Published:2012-08-30
Supported by:
Project supported by the Natural Science Foundation of China for Innovative Research Group (No. 50921002), and the Natural Science Foundation of Jiangsu Province of China (No. BK2010002).