[1] School of Environmental Engineering, Department of Chemical Engineering, Pohang University of Science and Technology, San 31 Hyoja Dong, Pohang 790-784, Korea, Republic of
[2] Energy Research Department, Research Institute of Industrial Science and Technology (RIST), San 32 Hyoja Dong, Pohang 790-330, Korea, Republic of
[3] School of Chemical Engineering Technology, Yeungnam University, Daedong, Gyeongsan 712-749, Korea, Republic of