Inovasi pupuk KNO3 slow release berbasis film grafena oksida limbah tempurung kelapa

Authors

  • Ahmad Ali Muckharom Departemen Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro, Semarang 50275, Indonesia
  • Risma Aimatul Qudsiyah Departemen Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro, Semarang 50275, Indonesia
  • Davina Maritza Nastiti Departemen Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro, Semarang 50275, Indonesia
  • Heri Sutanto Departemen Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro, Semarang 50275, Indonesia

DOI:

https://doi.org/10.61511/hcr.v1i2.1267

Keywords:

grafena oksida, pupuk KNO3, slow release

Abstract

Background: As a country with an extensive agricultural sector, the use of fertilizers plays a crucial role. Inorganic fertilizers such as KNO₃ are commonly used; however, excessive application leads to the accumulation of inorganic residues in the soil. Therefore, fertilizers that allow for controlled nutrient release are highly needed, one of which is through encapsulation using graphene oxide (GO). Methods: This study aims to synthesize GO and examine its characteristics for encapsulating KNO₃ fertilizer. Coconut shell waste was used as the raw material for producing GO, synthesized through the Hummers method with variations in the graphite mass derived from coconut shell. Findings: FTIR analysis confirmed the presence of O–H, C–H, and C=C bonds. TEM characterization revealed a thin morphology, indicating oxidation during the formation of graphene oxide. AAS tests showed that the release of KNO₃ from the graphene oxide reached a maximum of 93.8% after 8 hours. This fertilizer is intended to address the issue of low absorption rates of macronutrients by plants. Conclusion: This study demonstrates that graphene oxide synthesized from coconut shell waste can effectively encapsulate KNO₃ fertilizer, enabling controlled nutrient release of up to 93.8% after 8 hours. Novelty: The novelty of this study lies in the utilization of coconut shell waste as a graphite source for synthesizing graphene oxide for the encapsulation of KNO₃ fertilizer, offering the potential to improve nutrient uptake efficiency in plants.

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Published

2024-08-31

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