Abstract:
Thanks are due first to All-powerful Allah for giving me the will and patience to complete this work.
Wish to express my sincere gratitude and appreciation to my supervisors Dr. Abdul Razzaq and co-supervisor Dr. Ume Salma Amjad for their counseling, direction, care and suggestions which were very helpful throughout this work. I would like to express my appreciation to the Head of the Department, Department of Chemical Engineering, COMSATS University Islamabad, Lahore, Prof. Dr. Murid Hussain for his support and help towards my postgraduate affairs. I wish to thank all my colleagues of the Chemical Engineering Department for their kind assistance and encouragement.
I also indebted to COMSATS University Islamabad, Lahore Campus (CUI LHR) for my Masters Study. Librarians at CUI LHR also deserve special thanks for their assistance in supplying the relevant literatures. Special thanks to HEC who financially supported me for my MS studies otherwise it was impossible for me to achieve this milestone.
