Utilization of nanosilica from boiler ash sugar cane industry for filler of chitosan sulfate membrane on direct methanol fuel cell

Sustainable Agriculture Transformation for The Nations Welfare of Indonesia and Malaysia

Indrasti, N.S.^1 ; Ismayana, A.^1 ; Damayanti, R.^1 ; Maddu, A.^2 ; Aryanto, A.Y.^1

Department of Agroindustrial Technology, Bogor Agricultural University, Bogor, Indonesia^1

Department of Physics, Bogor Agricultural University, Bogor, Indonesia^2

关键词: Ammonium Sulfate;    Degree of sulfonation;    Electrolyte membrane;    Ion conductivities;    Ion exchange capacity;    Membrane characteristics;    Methanol absorption;    Particles sizes;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/196/1/012016/pdf
DOI  :  10.1088/1755-1315/196/1/012016

来源: IOP

【 摘 要 】

Nanosilica from boiler ash sugar cane industry can be utilized asfiller electrolyte membrane ofDirect Methanol Fuel Cell (DMFC). The aim of the study was to determine the influenceof ammonium sulfate addition on chitosan and nanosilica addition to performance of chitosan sulfate membrane. This research was conducted through three stages: synthesisof nanosilica using presipitation method, synthesis of chitosan sulfate with ammonium sulfate in various concentration of 0.1 M, 0.5 M, 1 M, 1.5 M, and synthesisof chitosan sulfate membrane by adding nanosilica of 1%, 3%, 5% level. The result showed that nanosilica produced had characteristicsof amorphous, 330 nm of particles size, 47.49 nm of crystal size, 64% of crystalinization degree, and 0.3 of Podispersity Index (PDI). The degree of sulfonation produced by chitosan sulfate was 15.86%, 19.00%, 22.84%, and 24.75%. The sulfonation chitosan and nanosilica addition gave significant effect (α = 0,05) of membrane characteristics. Membrane with 0.1 M of ammonium sulfate and 3% of nanosilica had the highest performance with 40.75% of water absorption, 44.22% of methanol absorption, 0.66meq/g of ion exchange capacity, and 6.48 × 10-4 S/cm of ion conductivity. The composite membrane can be applied for DMFC.