[1] Univ Sains Malaysia, Sch Mat & Mineral Resources Engn, Energy Mat Res Grp EMRG, Nibong Tebal 14300, Pulau Pinang, Malaysia
[2] Chulalongkorn Univ, Fac Engn, Dept Chem Engn, Bangkok 10330, Thailand
[3] Univ Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Pulau Pinang, Malaysia
[4] Univ Sains Malaysia, Sch Elect & Elect, Nibong Tebal 14300, Pulau Pinang, Malaysia