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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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DESTILASI KERING SAMPAH PLASTIK PEMBUNGKUS DITERJEN MENJADI ALTERNATIF BAHAN BAKAR MINYAK Anom, I Dewe Ketut
FRONTIERS: JURNAL SAINS DAN TEKNOLOGI Vol 2, No 3 (2019): DESEMBER 2019
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (971.033 KB)

Abstract

Sampah plastik pembungkus deterjen adalah salah satu limbah padat yang belum teratasi carapenanggulangannya. Penimbunan sampah plastik dapat menurunkan kesuburan tanah dan di dalam tanah sampah plastik pembungkus deterjen tidak dapat terurai dengan cepat oleh mikroba.Pembakaran sampah plastik dapat menghasilkan gas-gas beracun atau zat-zat berbahaya bagi kesehatan manusia dan lingkungan.Tujuan penelitian ini adalah untuk memberi solusi untuk mengatasi permasalahan sampah plastik pembungkus deterjen, diolah menjadi bahan bakar minyak bensin sebagai energi alternatif bahan bakar minyak.Metode yang digunakan untuk mengubah sampah plastik pembungkus deterjen menjadi bahan bakar bensin adalah destilasi kering dan destilasi fraksinasi. Destilasi kering sampah plastik pembungkus diterjen menghasilkan 62% asap cair, dan destilasi fraksinasi asap cair pembungkus deterjen menghasilkan 52% BBM bensin. Identifikasi dengan alat KG-SM menunjukkan bahwa BBM bensin terdiri dari 37 senyawa turunan hidrokarbon. Nilai kalor dari BBM bensin dari sampah plastik pembungkus deterjen yaitu 13.560 kal/g lebih tinggi dibandingkan dengan nilai kalor BBM bensin yang beredar dipasaran yaitu 11.449 kal/g dan nilai kalor BBM bensin standar 11.700 kal/g.
Karakterisasi Asap Cair Hasil Pirolisis Sampah Styrofoam Dengan Katalis Zeolite Olke Wisje Lumingkewas; I Dewe Ketut Anom; Ardi Kapahang
Jurnal Kimia Fullerene Vol 6 No 2 (2021): 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.v6i2.351

Abstract

The purpose this achieved in this research is 1.To get a few percent of liguid smoke products acquired from the pyrolysis of Styrofoam waste. 2.To know the effect of using zeolite in the waste pyrolysis process styrofoam to the speed of formation of liquid smoke product .3. To characterize the physical and chemical properties of liquid smoke from pyrolysis of syrofoam wast. The research method used to convert Styrofoam waste into liquid smoke is the pyrolisis method. For characterize of liquid smoke from pyrolysis using equipment: a set of pyrolysis tools, Fenske Viscometer Oswald, Picnometer, Boilling Point Meter and a set of KG-SM alloy. The results showed that the pyrolysis of 100 grams of Styrofoam wa ste using zeolite catalyst produced an average of 69,33% liquid smoke whereas the pyrolysis of Styrofoam waste without using a catalyst produces average 61,67 % liquid smoke. Time and temperature of pyrolysis have the same influence, the higher value, the more liquid smoke is produced. the length of ime for pyrolysis of styrofoam waste uing zeolite catalyst laste for 4,5 hours, while the pyrolysis of Styrofoam without a catalyst laste for 3,5 hours. Based of the physical ang chemical properties of liquid smoke, the pyrolysis of Styrofoam waste using a catalyst or without using a catalyst can both be classified into gasoline.
Karakterisasi Asap Cair Hasil Pirolisis Sampah Kantong Plastik sebagai Bahan Bakar Bensin I Dewe Ketut Anom; John Z Lombok
Jurnal Kimia Fullerene Vol 5 No 2 (2020): 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.v5i2.206

Abstract

Plastic bag waste is garbage that is difficult to degrade in nature. Hoarding plastic bag waste can reduce soil fertility because it cannot be broken down by microorganisms quickly. Burning plastic bag waste can produce toxic gases and have a negative impact on human health and the environment. To solve the problem, the plastic bag waste is converted into liquid smoke as fuel oil. The method used to convert the plastic bag waste into liquid smoke is pyrolysis. The fractionation of liquid smoke at temperatures below 200oC produces 36.20% clear liquid which has similar properties to gasoline fuel. Characterization of the physical and chemical properties of the gasoline fraction liquid smoke has a density of 0.76 g/mL; a viscosity of 0.80 cP; boiling point at 146.9oC; flash point at 30.60oC; a calorific value of 10,520 cal/g; with the octane number of 98 RON. GC-MS analysis shows that the gasoline fraction liquid smoke consists of 45 chemical compounds which can be classified into alkanes, alkenes, cycloalkanes and alcohols.
Pengaruh Model Pembelajaran Problem Based Learning Pada Materi Sistem Koloid Terhadap Hasil Belajar Kimia Siswa Kelas XI MIA di SMA Negeri 1 Lirung Yeni Gerice Awawangi; I Dewe Ketut Anom; Meyti Jeanne Rampe
Oxygenius Journal Of Chemistry Education Vol 3 No 1 (2021): 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.v3i1.221

Abstract

Problem based lerning is a learning model that involves students to solve a problem through the stages of the scientific method so that students can learn knowledge related to the problem and at the same time have the skills to solve the problem. This research aims to determine the effect of the Problem based lerning learning model. on student learning outcomes. The research was conducted at SMA Negeri 1 Lirung in the 2018/2019 academic year. The population was all classes in SMA Negeri 1 Lirung with a sample of class XI MIA 2 and class XI MIA 3 as an experimental class of 20 students. With the research design Posttest Only Control Design with the True Experimental method. The results of the calculation of the test (t) the mean similarity of the two parties obtained tcount (4.406) and ttable 2.002 at the level of α = 5%. This shows that the value of t is greater than t table, so the hypothesis Ho is rejected and Ha is accepted, so it can be concluded that there is a significant influence on the problem-based lerning learning model on student learning outcomes of Chemistry at SMA Negeri 1 Lirung.
Reaction Kinetics in the Pyrolysis of Human Hair Waste I Dewe Ketut Anom; John. Z. Lombok
Acta Chimica Asiana Vol. 5 No. 1 (2022)
Publisher : The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v5i1.113

Abstract

Human haircuts are a waste, and they can cause environmental problems. The human haircuts waste from barbershops has not been appropriately handled. This waste will be burned or just thrown away. Human haircut waste is difficult to decompose in nature, and the importance of environmental conservation, it is necessary to innovate in processing human haircut waste into beneficial products. This study investigates the reaction kinetics of gas formation in the pyrolysis of human hair cutting waste. The research method used is pyrolysis at high temperatures in the absence of oxygen in the system and the system under a vacuum. The pyrolysis of unwashed and washed human hair pieces follows a first-order reaction. The kinetics parameters of gas formation on the pyrolysis of unwashed human hair followed the Arrhenius equation with K= Ae-9835.1/RT, and the activation energy was 81.769x103 kJ/mol. Meanwhile, the gas kinetics on the pyrolysis of washed human hair followed the Arrhenius equation with K= Ae-3667.1/RT and the activation energy value of 30.487x103 kJ/mol.
Penerapan Metode Problem Solving Terbimbing Untuk Meningkatkan Aktivitas dan Hasil Belajar Kimia Pada Materi Hukum-Hukum Dasar Kimia di SMA Negeri 1 Tompaso Nathalia F. C. Bambulu; I Dewe Ketut Anom
Oxygenius Journal Of Chemistry Education Vol 4 No 1 (2022): 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.v4i1.370

Abstract

This research aims to increase learning activities and learning outcomes through the application of problem solving methods guided to the basic laws of chemistry class X Mia. This study was conducted in class X sma Negeri 1 Tompaso with a sample number of 20 people. This study is a Class Action Research consisting of 2 cycles. Each cycle includes 4 stages, namely planning, implementation, documentation observation, tests and questionnaires. Data analysis uses descriptive methods. The results showed that the application of guided problem solving methods can increase learning activity (from 64% in cycle 1 to 85% in cycle II) as well as affective aspects (from 68.16% to 75.44%) in the basic laws of chemistry class X Mia Sma Negeri 1 Tompaso school year 2018/2019.
Pengaruh Metode Pembelajaran Mind Mapping terhadap Hasil Belajar pada Pokok Bahasan Hukum-Hukum Dasar Kimia Siswa Kelas X Semester Ganjil di SMA Negeri 2 Langowan Frindly Makarawung; I Dewe Ketut Anom; John Lombok
Oxygenius Journal Of Chemistry Education Vol 1 No 2 (2019): Oxygenius : Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (461.152 KB) | DOI: 10.37033/ojce.v1i2.119

Abstract

This research aims to determine the effect of mind mapping learning methods on the basic laws of chemistry toward learning outcomes of students of class X MIPA in SMA Negeri 2 Langowan. The sample used in this study were all students of class X MIPA of SMA Negeri 2 Langowan. This research uses an experimental method, with the research method used is Quasi Experiment with Nonequivalent Control Group Design design. The research data were obtained from post-test results. Obtained the average value of student learning outcomes Experiment class is 85. The results showed the value of tcount = 15.7> ttable = 2.21, so H0 was rejected and H1 was accepted. Based on the results of the research it can be concluded that there is an influence on student learning outcomes on the basic laws of chemistry using mind mapping learning methods.
Pengaruh Model Pembelajaran Kooperatif Tipe Jigsaw Disertai Praktikum Terhadap Hasil Belajar Pada Materi Sifat Koligatif Larutan Di SMA Negeri 1 Tondano Yohana Tandi; Sanusi Gugule; I Dewe Ketut Anom
Oxygenius Journal Of Chemistry Education Vol 2 No 2 (2020): 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.v2i2.168

Abstract

Tujuan dari penelitian tersebut ialah untuk dapat mengetahui pengaruh pembelajaran kooperatif tipe jigsaw disertai praktikum terhadap hasil belajar pada materi sifat koligatif larutan. Penelitian ini dilaksanakan di SMA Negeri 1 Tondano pada tahun ajaran 2019/2020 dengan menggunakan metode penelitian eksperimen dengan desain post-test only control design. Sampel yang digunakan sebanyak 22 siswa kelas eksperimen dan 22 siswa kelas kontrol. Teknik pengumpulan data diperoleh melalui instrumen tes hasil belajar sebanyak 20 butir soal objektif yang kemudian dianalisis menggunakan uji-t. Hasil penelitian menunjukkan bahwa pada taraf signifikan 0,05 diperoleh data hasil belajar thitung lebih besar dari ttabel yaitu 4,087 > 2,018. Hal ini menunjukkan bahwa terdapat pengaruh model pembelajaran kooperatif tipe jigsaw disertai praktikum terhadap hasil belajar pada materi sifat koligatif larutan.
Pengaruh Pendekatan Konstruktivisme Berbasis Learning Cycle 5E Terhadap Hasil Belajar Siswa Kelas Xi Pada Materi Larutan Penyangga Di Sma Kristen Kotamobagu Fina Hamise; I Dewe Ketut Anom; Jeanne Tuerah
Oxygenius Journal Of Chemistry Education Vol 1 No 2 (2019): Oxygenius : Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (394.484 KB) | DOI: 10.37033/ojce.v1i2.79

Abstract

This study aims to determine the effect of using the constructivist approach based on the 5E learning cycle on the learning outcomes of class XI students on buffer solutions. This research was conducted in classes XI IPA 1 and XI IPA 2 of Kotamobagu Christian High School. The method used is an experimental method with a post – test only control design. The research sample consisted of 23 randomly selected students. The experimental class uses the 5E learning cycle model, the control class uses conventional learning. Student learning outcomes data obtained from post-test scores. The analysis of research data shows that there are differences in student learning outcomes, which are taught using the 5E learning cycle model and those using conventional learning. The data analysis used the t-test with a significance level of α = 0.05. Statistical analysis of student learning outcomes obtained tcount> ttable or 4.90> 1.68. So it can be concluded that there are differences between student learning outcomes using the constructivism approach based on the 5E learning cycle and student learning outcomes using conventional learning.
Kinetic Study of Gas Formation in Styrofoam Pyrolysis Process I Dewe Ketut Anom
Acta Chimica Asiana Vol. 4 No. 2 (2021)
Publisher : The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v4i2.76

Abstract

This research aims to study the reaction kinetics of gas formation in the pyrolysis of styrofoam waste. Pyrolysis of styrofoam waste without a catalyst takes place at a constant temperature of 180°C. In contrast, the pyrolysis of styrofoam waste by adding a zeolite catalyst took place at a constant temperature of 170°C. The amount of styrofoam waste used in this research sample is 200 grams, and the natural zeolite catalyst is 5 grams. Pyrolysis of styrofoam waste without using a catalyst form a gas at a constant temperature of 180°C, the kinetics of the reaction takes place on the zero-order. This result follows the Arrhenius equation K = Ae10617/RT with an activation energy value (Ea) of 1.27x103 kJ.mol-1. Pyrolysis of styrofoam waste by adding a zeolite catalyst to gas formation at a constant temperature of 170°C also takes place on the zero-order. The equation follows Arrhenius K= Ae4711,5/RT and the activation energy value (Ea) is 5.66x102 kJ.mol-1.
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