Article Per Year (5 Year)
p-Index From 2020 - 2025
0.23
P-Index
This Author published in this journals
All Journal EduChemia: Jurnal Kimia dan Pendidikan
Ulayya, Salwa
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Phosphate Accumulation Using MgO-Fe3O4/Agarose/Oxalic Acid Gel as a Diffusive Gradient in Thin Films (DGT) Binding Layer Dinira, Layta; Rafif, Sullahudin Ahmad; Ulayya, Salwa; Rumhayati, Barlah; Darjito, Darjito; Sabarudin, Akhmad
EduChemia: Jurnal Kimia dan Pendidikan Vol 10, No 1 (2025)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v10i1.29113

Abstract

Monitoring phosphate concentration in waters is critical because excessive phosphate can lead to the death of aquatic organisms. Phosphate can be monitored via a passive sampler called Diffusion Gradient in Thin Films (DGT). This study combines MgO and Fe3O4 impregnated in agarose crosslinked with oxalic acid to accumulate phosphate from the solution as a DGT binding gel. The parameters observed in this study were MgO/Fe3O4 mass ratio (1:3, 1:1, 3:1), accumulation time (20, 40, 60, 120, 240, and 1440 min), phosphate concentration (0.2, 0.4, 0.6, 0.8, and 1 mg/L) and pH (4, 5, 6, 7, and 8) on phosphate accumulation. XRD pattern confirmed that the adsorbents used were MgO and Fe3O4. SEM analysis showed that the gel had an average pore size of 31.78 μm, and the adsorbents were evenly distributed. Gel with MgO/Fe3O4 mass ratio 3:1 can adsorb phosphate up to 97.19 ± 0.36%. The phosphate accumulation reached optimum after a minimum adsorption time of 4 hours and when the phosphate concentration in the solution was 0.4 mg/L. The solution's pH had no significant effect on phosphate accumulation. This study shows that MgO-Fe3O4/agarose/oxalic acid gel is an excellent binding gel to accumulate phosphate from water.
Co-Authors Akhmad Sabarudin Barlah Rumhayati Darjito Darjito Layta Dinira Rafif, Sullahudin Ahmad