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All Journal Chemistry Indonesian Journal of Chemical Research Fullerene Journal of Chemistry Oxygenius Journal Of Chemistry Education Acta Chimica Asiana Frontiers
I Dewe Ketut Anom
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Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering

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Penerapan Media Video Pembelajaran Terhadap Hasil Belajar Siswa Pada Materi Asam Basa Di SMA Negeri 1 Langowan Eksfransha Cania; I Dewe Ketut Anom
Oxygenius: Journal Of Chemistry Education Vol 5 No 1 (2023): Oxygenius : Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v5i1.525

Abstract

Tujuan dari penelitian ini adalah untuk mengetahui rata-rata hasil belajar siswa dengan menerapkan media video pembelajaran pada materi asam basa di kelas XI MIPA SMA Negeri 1 Langowan. Penelitian ini adalah penelitian kuantitatif menggunakan metode eksperimen dengan menggunakan desain posttest only control group design. Sampel dalam penelitian ini adalah kelas XI MIPA 2 sebagai kelas eksperimen dan XI MIPA 3 sebagai kelas kontrol dengan masing-masing kelas berjumlah 30 siswa. Pengambilan data dilakukan dengan memberikan posttest setelah proses pembelajaran. Data hasil penelitian yang diperoleh berupa selisih nilai rata-rata posttest kelas eksperimen dan kelas kontrol yaitu sebesar 36,2. Dengan rata-rata nilai posttest kelas eksperimen yaitu 83,37 sedangkan rata-rata nilai posttest kelas kontrol yaitu 47,17. Uji hipotesis pada penelitian ini menggunakan uji t pada . Hasil analisis data untuk hasil belajar diperoleh yaitu thitung = 12,201 ttabel = 2,001. Dengan demikian dapat disimpulkan bahwa rata-rata hasil belajar siswa dengan menggunakan media video pembelajaran lebih tinggi dari pada rata-rata hasil belajar siswa dengan menggunakan metode ceramah pada materi asam basa di SMA Negeri 1 Langowan.
Efektivitas Implementasi Model Pembelajaran ICARE Terhadap Hasil Belajar Kimia Siswa Pada Materi Asam Basa Di SMA Budi Luhur Kembang Mertha Dewa Ayu Agung Raka Sri Adnyani; Desire Rumondor; I Dewe Ketut Anom
Oxygenius: Journal Of Chemistry Education Vol 5 No 2 (2023): Oxygenius : Journal Of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v5i2.596

Abstract

The purpose of this study was to determine the Effectiveness of the Implementation of the ICARE Learning Model on Student Chemistry Learning Outcomes in Acid-Base Material. This research was conducted in class XI MIA SMA Budi Luhur Kembang Mertha in the 2022/2023 academic year. A total of 24 students of class XI MIA were selected as the research sample. This research is a quantitative study using an experimental method with a one-group pretest-posttest design. The data collection technique uses a learning achievement test which is given a pretest before the learning process is carried out and a posttest after the learning process is carried out. From these results it can be concluded that the implementation of the ICARE learning model can effectively improve students' chemistry learning outcomes in the subject matter of class XI acids and bases at SMA Budi Luhur Kembang Mertha.
Characterization and Identification Compounds of Liquid Smoke from Used Tire Waste Pyrolysis Lombok, Johny Zeth; Anom, I Dewa Ketut
Indonesian Journal of Chemical Research Vol 11 No 1 (2023): Edition for May 2023
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598//ijcr.2023.11-lom

Abstract

Research on compounds from liquid smoke resulting from the pyrolysis of used tire waste has been conducted. The results of tire pyrolysis produce liquid hydrocarbons and charcoal which can be utilized and developed into more useful materials or finished goods. This study aims to identify the compound components of liquid smoke resulting from the pyrolysis of used tire waste. The research begins with manufacturing a pyrolysis tool based on the principle of dry distillation. The pyrolysis process is carried out by heating at high temperatures. Liquid smoke analysis was carried out using GC-MS. In contrast, the components of the compound were identified and characterized by comparing the mass spectrum data obtained with the mass spectrum data in the GC-MS library. The results showed that the pyrolysis of 6 kg of used tires produced 1500 mL of liquid smoke. Analysis of liquid smoke by GC-MS produced 88 chromatogram peaks, with the most dominant peak height at peaks 3, 17, 37, 38, 72, and 73. The most dominant compound component identified by MS spectrum analysis is 2-propanone (peak 3), 4-methyl-2-pentanone (peak 17), ethyl-benzene (peak 37), 1,2-dimethyl-benzene (peak 38), 1-methyl-4-(1-methyl ethyl)-benzene (peak 72) and limonene (peak 73).
Characterization Of Charcoal Product Of Pyrolisis Of Human Hair Waste Activated With KOH Solution Kojongian, Tammita Marianne Kireina; Krisen, Sofia; Anom, I Dewe Ketut
Jurnal Kimia Fullerene Vol 10 No 1 (2025): Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v10i1.686

Abstract

This research aims to characterize charcoal resulting from pyrolysis of human hair waste which is activated by KOH solutions using FTIR, XRD and SEM instruments. The human hair charcoal obtained from pyrolysis then goes into the particle size reduction process using a 60 and 100 mesh sieve. It is then activated using KOH and then the results of the activation are analyzed using FTIR, XRD instruments assisted by software. Origin and Ms. Excel, then SEM assisted by Image-J software . The ash content test results show that the amount of minerals and metals in human hair charcoal tends to increase. The results of the water content test show that the amount of water content in human hair charcoal tends to decrease. In analysis using FTIR it was identified showed the presence of various functional groups in human hair charcoal processed with KOH and Control Sample solutions. Mesh differences in processing give slight variations in peak intensity and position, but overall indicate the presence of O-H, CH, C=C, and CO groups . In the analysis using​ The solution gave the largest grain size in KOH mess 100, namely D = 356.35764 ± 11.18168 nm.
Characterization of Activated Charcoal from Pyrolysis Of Human Hair Cutting and Its Utilization as an Adsorbent Adnyani, Dewa A.A.R.S; Anom, I Dewe Ketut; Lombok, Johny
Jurnal Kimia Fullerene Vol 10 No 2 (2025): Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v10i2.725

Abstract

This study aims to determine the characteristics of activated carbon from human hair cutting waste and to determine its ability to adsorb metals contained in water. This study uses an experimental method that is preceded by the activation of charcoal with KOH activator. Then continued with characterization using Fourier Transform Infra - Red (FTIR), X-Ray Diffraction (XRD), Scanning Electron Microscope Energy Dispersive X-Ray (SEM-EDS) and Atomic Absorption Spectrophotometer (AAS). The results of the study showed that the FTIR spectrum showed the presence of a groupOH, CH, C=C and CO. The results of SEM analysis of activated carbon show the morphology of the pores of unactivated carbon, namely the surface looks smooth and dense with small particles evenly distributed and there are no large pores or significant cracks. Activated carbon from activation with KOH has a surface structure that looks more porous than before activation. The results of EDS analysis show the elemental composition of unactivated carbon and after activation using KOH only the C element is produced. XRD analysis of unactivated activated carbon shows one wide and not sharp diffraction peak. This characteristic indicates that the material has an amorphous structure, which means that the atoms in the material are not arranged crystalline but randomly. The relatively low diffraction intensity and high background strengthen the amorphous character of this pyrolysis carbon. After activation using KOH, the diffraction pattern still shows a wide peak at the same 2θ, but with higher intensity and a more defined peak shape. The results of AAS analysis show that activation with KOH provides high adsorption efficiency of 26.82%.
Co-Authors Adnyani, Dewa A.A.R.S Ardi Kapahang Desire Atna Sridanty Rumondor Dewa Ayu Agung Raka Sri Adnyani eksfransha cania Fina Hamise Frindly Makarawung Jeanne M. Tuerah John Lombok John Z Lombok John. Z. Lombok Johny Zeth Lombok Kojongian, Tammita Marianne Kireina Lombok, Johny Meyti Jeanne Rampe Nathalia F. C. Bambulu Olke Wisje Lumingkewas Sanusi Gugule Sofia Satriani Krisen Yeni Gerice Awawangi Yohana Tandi