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All Journal JURNAL KIMIA SAINS DAN APLIKASI EduChemia: Jurnal Kimia dan Pendidikan Jurnal Kimia Mulawarman Jurnal Biologi Tropis Indonesian Journal of Chemical Analysis (IJCA) Jurnal Riset Teknologi Industri Jurnal Kimia dan Kemasan Makara Journal of Science Magistrorum et Scholarium: Jurnal Pengabdian Masyarakat Rafflesia Journal of Natural and Applied Sciences (RJNAS)
November Rianto Aminu
Universitas Kristen Satya Wacana
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health

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Pengaruh NaOH dan Suhu Aktivasi Terhadap Karakteristik Karbon Aktif Sekam Padi Teraktivasi H3PO4 Cucun Alep Riyanto; Ezra Kurniawan; November Rianto Aminu
RAFFLESIA JOURNAL OF NATURAL AND APPLIED SCIENCES Vol. 1 No. 2 (2021): Oktober
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rjna.v1i2.16864

Abstract

Pemanfaatan limbah sekam padi (Oryza sativa) yang kurang maksimal di Dusun Glendang, Desa Watuagung, membuat peneliti berupaya untuk memanfaatkan limbah ini sebagai karbon aktif karena komponen senyawa penyusun dan kenaikan harga ekonomisnya. Tujuan dalam penelitian ini adalah menentukan karakteristik karbon aktif sekam padi yang dipengaruhi oleh suhu aktivasi dan tahap pemrosesan awal menggunakan NaOH. Penelitian dilakukan dengan tahap refluks NaOH pada serbuk sekam padi, aktivasi dengan rasio impregnasi karbon:H3PO4 30% (1:4, b/b), pemanasan pada variasi suhu 400°C hingga 800°C, serta karakterisasi menggunakan instrumen FT-IR, XRD, dan SEM-EDX. Suhu optimum pada penelitian ini didapatkan pada karbon aktif sekam padi 600°C (KASP 600) dan karbon aktif sekam padi basa 700°C (KASPB 700) dimana keduanya mengandung gugus fungsional -O-H, -C-H, -C?C, -C=C, -C=O, -Si-O, dan -C-O. Sifat kristalinitas kedua karbon aktif ini terdiri atas fase campuran amorf dan kristalin silika pada kisaran 2?= 22° dan 24° dengan latar belakang luas. Berdasarkan hasil analisa SEM-EDX, tahap pemrosesan awal menggunakan NaOH berdampak menurunkan sebesar 1,21% kandungan silika anorganik pada karbon aktif sekam padi yang membuat strukturnya terlihat lebih banyak lubang atau retakan. Dominasi unsur penyusun karbon aktif sekam padi dalam penelitian ini secara berurutan adalah O, C, P, Si, dan Na.
The Effect of Maleic Anhydride Concentration on Water Resistance of Carrageenan-Based Bioplastic Made using The Sol-Gel Method Aminu, November Rianto; Setyaji, Dimas Nugraha; Hartini, Sri
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i3.7420

Abstract

There is an increasing rate of land conversion in Indonesia that can threaten food self-sufficiency. Therefore farmers and the government must expand agriculture by developing agriculture on potential available lands such as drylands. However, drylands in Indonesia have low productivity due to low water and nutrient availability. This article aims to determine the potential use of arbuscular mycorrhizal fungi to overcome drought stress and low nutrient availability in drylands. The method used in writing this article is a desk literature study conducted by collecting data from various sources, such as scientific journals, seminar proceedings, and online reports available in related government office in West Nusatenggara Province. The data obtained were then analyzed qualitatively by identifying, reviewing, and synthesizing information to produce a complete and comprehensive explanation. The results of the literature study showed that arbuscular mycorrhizal fungi have the potential to overcome drought stress and low nutrient availability in drylands. The use of arbuscular mycorrhizal fungi can be a sustainable solution to increase agricultural productivity in drylands.
Adsorption of Cadmium (II) Ions Using Cassava Peel Activated Carbon: Study of Adsorption Kinetics, Isotherms and Thermodynamics Nugroho, Tri Ariyanto; Riyanto, Cucun Alep; Aminu, November Rianto
Indonesian Journal of Chemical Analysis (IJCA) Vol. 7 No. 1 (2024): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol7.iss1.art2

Abstract

Heavy metals Cd2+ is a dangerous pollutant of water and ecological systems if it is above the quality standard threshold. Cassava peel has a fairly high carbon element content, namely 59,31%, so it can be used as an activated carbon to break down Cd2+ metals ions in water. This research aims to determine kinetic modeling and adsorption isotherms of Cd2+ ions using CPAC activated by H3PO4, determine the optimum pH and temperature conditions for Cd2+ ion adsorption and determine the adsorption capacity of Cd2+ ions using CPAC activated by H3PO4. CPAC is made through a carbonization process at a temperature of 500 °C for 1 hour. Next, it was impregnated with H3PO4 at a concentration of 30 % with a ratio of 1:5 (w/w) for 24 hours and physically activated at a temperature of 600 °C for 1 hour. Based on research, kinetic modeling and adsorption isotherms of Cd2+ ions using CPAC activated by H3PO4 following Pseudo-Second-Order (PSO) kinetic modeling and Freundlich isotherm, the optimum pH and temperature conditions for Cd2+ ion adsorption were obtained at pH 5 and temperature 25 °C. Thermodynamic parameters such as Gibbs energy (∆G°), enthalpy (∆H°), and entropy (∆S°), have been evaluated and indicate physical, spontaneou, and exothermic adsorption processes. The adsorption capacity of Cd2+ ions using CPAC activated by H3PO4 is 5.2219 mg/g.
Co-Authors A Ign Kristijanto Alfon Pali Anthony Sudibya Bereka Meidelivia Raharjianti Cucun Alep Riyanto Devina Intan Sari Divina Anindya Della Diyonisio Kevin Elisando Elizabeth Elizabeth Ezra Kurniawan Fidelia Novitasari Gavrila Debora Manampiring Hartati Soetjipto Ida Ratnasari Jumiyati Jumiyati Krisdayanti, Mitra Maria Githania Maya Krisnawati Ni Ketut Prihatin Novenda Pramesti Ayuningtyas Nugroho, Tri Ariyanto Nur Ayu Hidayati Pandu Krisnawan Ratu Anggriani Tangke Parung Samuel Yoga Saputra Sarawinda Hutagalung SATRIYAS ILYAS Setyaji, Dimas Nugraha Sri Hartini Sri Hartini Tiffany Febetania Widodo Widhi Nugroho Meindra Yohanes Martono Yos Saputra Halomoan