S.F. Azha
School of Chemical Engineering, University Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia, Tel : +604-599 6458; Fax : +604-594 1013

School of Chemical Engineering, University Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia, Tel : +604-599 6458; Fax : +604-594 1013

A.L. Ahmad
School of Chemical Engineering, University Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia, Tel : +604-599 6458; Fax : +604-594 1013

School of Chemical Engineering, University Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia, Tel : +604-599 6458; Fax : +604-594 1013

S. Ismail
* Corresponding Author
School of Chemical Engineering, University Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia, Tel : +604-599 6458; Fax : +604-594 1013

School of Chemical Engineering, University Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia, Tel : +604-599 6458; Fax : +604-594 1013