1. School of Environmental and Biological Engineering, Wuhan Technology and Business University, Wuhan, P.R. China.
2. Department of Soil and Environmental Sciences, The University of Agriculture, Peshawar, Pakistan.
3. Department of Chemical and Energy Engineering, Pak-Austria Fachhochshule, Institute of Applied Science and Technology, Haripur, Pakistan.
4. Pakistan Tobacco Board, Mardan, Pakistan.