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Febriana, Ida
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Pembuatan Baterai Kering Menggunakan Karbon Aktif dari Cangkang Kelapa Sawit dan Asam Nitrat (HNO3) sebagai Aktivator Tiara, Berlian; Larasati, Tri; Febriana, Ida; Reka Septiana, Iriani; Kholidah, Nurul
Jurnal Teknik Kimia USU Vol. 15 No. 1 (2026): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v15i1.22502

Abstract

Activated carbon from palm kernel shells has the potential to be an environmentally friendly material to replace heavy metals in dry batteries. The objective of this study is to analyze the effect of variations in HNO₃ concentration (0.5 M; 1 M; 1.5 M; 2 M; and 2.5 M) and to evaluate its performance as a dry battery electrode material using 1 M NaOH and 1 M H₃PO₄ electrolytes. The process involved carbonisation and chemical activation using HNO₃, followed by proximate analysis, iodine number testing, and surface morphology analysis using a Scanning Electron Microscope (SEM). The results showed the best performance was achieved at an HNO₃ concentration of 1 M with a voltage of 3.66 V, current of 5.55 mA, and power of 20.31 mW when using NaOH electrolyte. Conversely, at an HNO₃ concentration of 2.5 M with H₃PO₄ electrolyte, the lowest performance was achieved at a voltage of 1.94 V, current of 0.79 mA, and power of 1.53 mW due to pore damage. This study demonstrates the potential of oil palm shells as a raw material for environmentally friendly and sustainable batteries.
Pembuatan Baterai Kering Menggunakan Karbon Aktif dari Cangkang Kelapa Sawit dan Asam Nitrat (HNO3) sebagai Aktivator Tiara, Berlian; Larasati, Tri; Febriana, Ida; Reka Septiana, Iriani; Kholidah, Nurul
Jurnal Teknik Kimia USU Vol. 15 No. 1 (2026): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v15i1.22502

Abstract

Activated carbon from palm kernel shells has the potential to be an environmentally friendly material to replace heavy metals in dry batteries. The objective of this study is to analyze the effect of variations in HNO₃ concentration (0.5 M; 1 M; 1.5 M; 2 M; and 2.5 M) and to evaluate its performance as a dry battery electrode material using 1 M NaOH and 1 M H₃PO₄ electrolytes. The process involved carbonisation and chemical activation using HNO₃, followed by proximate analysis, iodine number testing, and surface morphology analysis using a Scanning Electron Microscope (SEM). The results showed the best performance was achieved at an HNO₃ concentration of 1 M with a voltage of 3.66 V, current of 5.55 mA, and power of 20.31 mW when using NaOH electrolyte. Conversely, at an HNO₃ concentration of 2.5 M with H₃PO₄ electrolyte, the lowest performance was achieved at a voltage of 1.94 V, current of 0.79 mA, and power of 1.53 mW due to pore damage. This study demonstrates the potential of oil palm shells as a raw material for environmentally friendly and sustainable batteries.
Analisis Waktu Hidrolisis Terhadap Kadar Glukosa Dalam Proses Pembuatan Bioetanol Dari Limbah Pisang Wahyuni , Elsa Dwi; Putri , Nabila Eka; Satio , Muhammad Panca; Efendy A, Sahrul; Febriana, Ida; Tahdid, Tahdid
Jurnal INOVATOR Vol. 8 No. 2 (2025): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v8i2.511

Abstract

Pemanfaatan limbah pisang busuk sebagai bahan baku pembuatan bioetanol merupakan upaya strategis untuk mendukung pengembangan energi terbarukan serta pengelolaan limbah organik yang berkelanjutan. Penelitian ini bertujuan untuk menganalisis pengaruh variasi waktu hidrolisis terhadap kadar glukosa dan hasil bioetanol yang dihasilkan. Proses hidrolisis dilakukan menggunakan asam sulfat (H₂SO₄) 2 N pada suhu 80°C dengan variasi waktu 40, 60, 80, 100, dan 120 menit. Cairan hasil hidrolisis kemudian difermentasi selama tujuh hari menggunakan Saccharomyces cerevisiae, dilanjutkan dengan proses distilasi dua tahap. Hasil penelitian menunjukkan bahwa peningkatan waktu hidrolisis berpengaruh nyata terhadap kadar glukosa dan volume bioetanol yang dihasilkan. Kadar glukosa meningkat dari 24,97% pada waktu 40 menit menjadi 41,80% pada waktu 120 menit dengan hasil tertinggi (yield) sebesar 74,76%. Volume bioetanol tertinggi sebesar 650 mL dengan kadar etanol 83% diperoleh pada waktu hidrolisis 120 menit. Parameter fisik seperti indeks bias dan densitas juga menunjukkan peningkatan kualitas bioetanol. Dengan demikian, limbah pisang busuk berpotensi besar sebagai bahan baku alternatif untuk produksi bioetanol dengan kondisi optimum pada waktu hidrolisis 120 menit, suhu 80°C, dan konsentrasi H₂SO₄ 2 N.
Co-Authors ., Sofia ., Zurohaina Ade Kurniawan Aditya, Muhammad Wahyu Agung Wijaya, Agung AIDA SYARIF Al-Insyrah, Eyza Recwika Amin, Jaksen M. Anggun Pratiwi Anugrah, Muhammad Rizki Arizal Aswan Aulia, Tri Daniar, Rima Efendy A, Sahrul Effendy A, Sahrul Effendy, Sahrul Erlinawati Erlinawati Erlinawati, Erlinawati Fadhlurrahman, M Revanza Fadjrin Ismaily, Muhammad Hilwatullisan, Hilwatullisan Irawan Rusnadi KHOLIDAH, NURUL Kurniawaty, Fegi Mahesi, Trin Zikir Manggala, Agus Meilianti Meilianti Najib Nursal Alfarabi Noviansyah, M. Nur Alifah, Desy Nyayu Zubaidah Oktofarizi, Irgy Rahmat Pangesti, Sailendra Prasetyatama, Bintang Tegar Pratiwi, Mitha Putri , Nabila Eka Rahmi, Fairus Ramadhana. S, Safira Eva Ramadhini, Tri Karimah Reka Septiana, Iriani Reyhan, Muhammad Hifal Safitri, Widi Saputra, Diego Saputra, Richo Satio , Muhammad Panca Septiana, Iriani Reka Shaskia, Bekka Alta Sofiah Sofiah Sutini Pujiastuti Lestari Syathiri, Balqis Tahdid Tahdid Tiara, Berlian Tri Larasati, Tri urhidayati, Siti Wahyuni , Elsa Dwi Yerizam, M. Yohandri Bow Yuka Fari Saputra Yuliana, Dwi Astri Yunanto, Isnandar Zikri, Ahmad