Bryan Hubert, Yoko Setiawan, Felycia Edy Soetaredjo, Sandy Budi Hartono
We report the synthesis of thiol modified magnetic mesoporous silica for the removal of Pb. Large pore mesoporous silica materials (FDU-12) were first modified with iron oxide by using wet impregnation method. The material were grafted with thiol moieties and named SH-MMS (Thiol modified mesoporous silica). SH-MMS had the highest adsorption capacity compared to unmodified MS. The adsorption capacity was 286,8 mg/g. The optimum pH was at 6, and saturation temperatur was 2 hours. The adsorption kinetic of Pb on SH-MMS was best described by PseudoSecond Order. The isotherm adsorpsi can be described using Langmuir equation. © 2006-2018 Asian Research Publishing Network (ARPN).
Department of Chemical Engineering, Widya Mandala Catholic University, Surabaya, Indonesia