The Effect Of Fe3O4/SiO2/CaCO3 Nanocomposites As Ammonia Analysis In Wastewater Of Shrimp Pond In Prigi Bay Using Nessler Method Lukluatus Syavika, Anugrah Ricky Wijaya*, and Alif Alfarisyi Syah
Department of Chemistry, Faculty of Mathematics and Science, State University of Malang
Jl. Semarang no.5, Indonesia
Abstract. Ammonia contained in shrimp pond wastewater will harm the surrounding environment if the waste is disposed of freely without prior treatment. The adsorbent is used to reduce the concentration of ammonia in shrimp pond waste. This study used CaCO3 to coat Fe3O4/SiO2 nanocomposites. CaCO3 is used as a coating for nanocomposites because it has been investigated to be able to be used as an adsorbent to reduce ammonia from a liquid sample. Synthesis of Fe3O4/SiO2/CaCO3 nanocomposite using coprecipitation method. Characterization of Fe3O4 nanoparticles, and Fe3O4/SiO2/CaCO3 nanocomposites using FT-IR and XRD. The synthesis was successful but the adsorbent did not adsorb ammonia. CaCO3 and SiO2 solids can adsorb ammonia, while Fe3O4 nanoparticles desorb ammonia. Solid SiO2 has a higher % adsorption than CaCO3 in standar solution but in sampel of shrimp pond wastewater 0.1 grams of CaCO3 was able to reduce ammonia levels in shrimp pond wastewater by 0.9907 mg/L with % adsorption was 10.02% and better than adsorption of solid SiO2.
