Adsorption of methylene blue into modified mesoporous silica from palm oil boiler ash

Volume 7, Issue 02, Pages 5-17, Jun 2024 *** Field: Analytical Chemistry

  • Shinta Ayu Kusumaningtyas Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta 55281, Indonesia
  • Dwi Siswanta Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta 55281, Indonesia
  • adhitasari suratman, Corresponding Author University of Gadjah Mada
Keywords: Modified mesoporous silica, Adsorption, Palm oil boiler ash, Methyl ester sulfonate, Methylene blue, UV-Vis spectrophotometer


The adsorption of methylene blue dye on modified mesoporous silica based on palm oil boiler ash (MS-POBA) as an adsorbent with a methyl ester sulfonate (MES) was investigated. MS-POBA and MES as a template improved the adsorption capacity of methylene blue by increasing the pore size of boiler ash silica. The characteristics of the material were determined using FTIR, XRD, BET, and SEM-EDX analyzers. The adsorption of methylene blue on the MS-POBA adsorbent was determined using a UV-Vis spectrophotometer. The MES as a template pasted to MS-POBA, could be increased surface area, pore diameter, and volume. In optimized conditions, pH, the adsorbent mass, the adsorption time, the methylene blue concentration, the adsorption capacity, and recovery were obtained at 7.0, 0.03 g, 45 minutes, 20 mg L–1, 15.578 mg g–1, and 96.9%, respectively. The adsorption of methylene blue on boiler ash silica with an MES template follows the pseudo-second-order kinetic model with a value of R2 = 0.999 and Langmuir isotherm adsorption model.


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How to Cite
Ayu Kusumaningtyas, S., Siswanta, D., & suratman, adhitasari. (2024). Adsorption of methylene blue into modified mesoporous silica from palm oil boiler ash. Analytical Methods in Environmental Chemistry Journal, 7(02), 5-17.
Original Article