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All Journal Jurnal Sosial dan Teknologi Hayyan Journal
Febrianti, Triana
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Pengaruh Modifikasi Permukaan Karbon Aktif Sekam Padi Menggunakan HNO3 Terhadap Kapasitansi Spesifik dengan Elektrolit HCL, KOH, DAN KCL Azis, Nuritasari; Febrianti, Triana; Ta’bi, Widi Aprilia
Jurnal Sosial Teknologi Vol. 6 No. 1 (2026): Jurnal Sosial dan Teknologi
Publisher : CV. Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/jurnalsostech.v6i1.32658

Abstract

Biomass-based activated carbon has potential as an electrode material in energy storage systems because it is renewable and environmentally friendly, but its performance is still dominated by the Electric Double Layer Capacitance (EDLC) mechanism. This study aims to examine the effect of surface modification of rice husk activated carbon using HNO3 on the specific capacitance of carbon paste electrodes in various types of electrolytes. Activated carbon was synthesized through the stages of carbonization, silica extraction, chemical activation using H3PO4, and surface modification using HNO3. Material characterization was carried out using X-Ray Fluorescence (XRF), Scanning Electron Microscope (SEM), Surface Area and Porosity with the Brunauer-Emmett-Teller (BET) method, Fourier Transform Infra-Red (FTIR), and Boehm titration. The electrochemical performance of the electrode was evaluated using the cyclic voltammetry method with HCl, KOH, and KCl electrolytes at a concentration of 0.5 M. FTIR and Boehm titration results showed an increase in the number of oxygen groups on the surface of activated carbon after modification. Electrochemical testing showed that the type of electrolyte affected the specific capacitance value, with KOH electrolyte producing the highest specific capacitance of 31.5094 mF/g on the modified activated carbon electrode (KAEM). This increase in capacitance was attributed to the contribution of the pseudocapacitance mechanism due to the interaction of oxygen functional groups on the surface of activated carbon with OH- ions, while in HCl and KCl electrolytes the charge storage mechanism was dominated by electric double layer capacitance.
The content of Compounds and Bioactivity of the Eucalyptus sp species Abd Haris, Miftahul Jannah; Andi Nur Fitriani Abubakar; Karneng, Syahdam; Indriani, Iin; Idriawien Gusti, Herdie; Surahmat; Febrianti, Triana
Hayyan Journal Vol. 2 No. 3 (2025): October
Publisher : Education and Talent Development Center of Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/hayyan.v2i3.3580

Abstract

Eucalyptus sp. is one of the plant genera from the Myrtaceae family which is widely known for its diverse secondary metabolite content and high biological activity. This study aims to systematically examine the diversity of active compounds and potential bioactivity of various Eucalyptus species, especially in the leaves, bark, seeds, and essential oils. Various compounds such as 1,8-cineole, citronellal, flavonoids, and phenolic compounds have been shown to contribute to pharmacological activities such as antioxidants, antimicrobials, anti-inflammatory, immunomodulators, anticancer, as well as natural insecticides and repellents. The results of the review indicate that these activities have great relevance in the development of biopharmaceutical products, cosmetics, and other health applications. The diversity of compounds and broad pharmacological effects place Eucalyptus as a very potential source of natural materials to be developed sustainably.
Review of the Agronomic and Biochemical Potential of Eucalyptus Plants ( Melaleuca cajuputi ) as Essential Oil Producers Siti Fatimah; Ilda Yangti; Andi Nurfitri Abubakar; Karneng, Syahdam; Indriani, Iin; Surahmat; Febrianti, Triana
Hayyan Journal Vol. 2 No. 3 (2025): October
Publisher : Education and Talent Development Center of Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/hayyan.v2i3.3615

Abstract

Studi ini mengeksplorasi potensi agronomi dan biokimia Melaleuca cajuputi (kayu putih) melalui tinjauan pustaka komprehensif penelitian Indonesia yang diterbitkan antara tahun 2019 dan 2024. Tujuannya adalah untuk mengevaluasi efektivitas berbagai strategi budidaya khususnya sistem agroforestri, pemupukan organik, dan perbaikan genetik dalam meningkatkan produktivitas dan kualitas minyak atsiri kayu putih. Hasil menunjukkan bahwa pola agroforestri menggunakan serai wangi ( Cymbopogon nardus ) yang ditumpangsarikan dengan varietas Sitrona 2 Agribun menghasilkan produksi minyak tertinggi (2,84%) dan kandungan 1,8-sineol (hingga 52,98%). Pemupukan organik menggunakan kompos tandan kosong kelapa sawit meningkatkan kesuburan tanah dan pertumbuhan tanaman, sementara inokulasi mikoriza arbuskular secara signifikan meningkatkan kelangsungan hidup bibit dan perkembangan daun. Lebih lanjut, varietas yang dipilih secara genetik menghasilkan 1,2–1,3% hasil minyak dengan kadar sineol mencapai 68–75%. Temuan ini menunjukkan manfaat sinergis dari praktik agronomi terpadu dan pemuliaan tanaman dalam menghasilkan minyak kayu putih berkualitas tinggi untuk aplikasi industri dan lingkungan yang berkelanjutan.
Co-Authors Abd Haris, Miftahul Jannah Andi Nur Fitriani Abubakar Andi Nurfitri Abubakar Azis, Nuritasari Idriawien Gusti, Herdie Ilda Yangti Indriani, Iin Karneng, Syahdam SITI FATIMAH surahmat Ta’bi, Widi Aprilia