[1] Univ Malaya, Fac Engn, Dept Mech Engn, Kuala Lumpur 50603, Malaysia
[2] Univ Putra Malaysia, Fac Engn, Dept Chem Engn, Serdang 43400, Malaysia
[3] Southern Univ Coll, Sch Fdn Studies, Dept Sci, Skudai 81300, Johor, Malaysia
[4] Univ Southampton, Fac Engn & Environm, Southampton SO17 1BJ, Hants, England
[5] Univ Malaya, Fac Sci, Dept Chem, Kuala Lumpur 50603, Malaysia
[6] Southern Taiwan Univ Sci & Technol, Dept Mech Engn, Tainan 710, Taiwan