Immobilization of Sulfur from Different Precursors on Mini Rice-Husk-Ash Pellet Coated Chitosan Film and the Application for Mercury Vapor Uptake

Muhammad Adlim (Department of Chemistry, FKIP, Syiah Kuala University, Jl. Tgk. Hasan Krueng Kalee Darussalam Banda Aceh, Aceh 23111, Indonesia)
Fitri Zarlaida (Department of Chemistry, FKIP, Syiah Kuala University, Jl. Tgk. Hasan Krueng Kalee Darussalam Banda Aceh, Aceh 23111, Indonesia)
Ibnu Khaldun (Department of Chemistry, FKIP, Syiah Kuala University, Jl. Tgk. Hasan Krueng Kalee Darussalam Banda Aceh, Aceh 23111, Indonesia)
Rizka Dewi (Department of Chemistry, FKIP, Syiah Kuala University, Jl. Tgk. Hasan Krueng Kalee Darussalam Banda Aceh, Aceh 23111, Indonesia)
Sofyatuddin Karina (Marine Science Department, Faculty of Fisheries and Marine Sciences, Syiah Kuala University, Jl. Teuku Nyak Arief, Darussalam Banda Aceh, Aceh 23111, Indonesia)
Ahmad Fairuz Omar (School of Physical Sciences, Universiti Sains Malaysia, Minden, Penang 11800, Malaysia)

Indonesian Journal of Chemistry
Vol 19, No 2 (2019)

Stabilizing elemental mercury using elemental sulfur has been a laboratory standard method but the studies in gas system are still growing. This study aims to explore the effect of different type immobilized sulfurs toward the mercury vapor uptake in a mini gas reactor. Sulfur powder, sulfur dissolved in carbon disulfide and colloidal sulfur from sodium thiosulfate-hydrochloric acid were immobilized on mini rice-husk-ash pellets that were previously coated with chitosan film. The average thinness of chitosan film was 58 µm covered the each pellet surface with dimension of 3 mm Ø x 4 mm. The trends of the mercury uptake and the rate of absorption were described as follow; Pellet-Scolloid > Pellet-SCS2 > Pellet-Spowder. The mean percentages of mercury uptake after 1 h running at 70oC were 99.36; 89.09 and 75.00 respectively. The reverse trends were observed for the size of S-particle aggregation and the amount of S found on the pellet surface.