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All Journal Science Map Journal Molluca Journal of Chemistry Education (MJoCE) Pakem : Jurnal Pengabdian Kepada Masyarakat
Untailawan, Romelos
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Journal : Molluca Journal of Chemistry Education (MJoCE)

 1 
PRODUCTION OF ACTIVATED CARBON OF PALMYRA PALM FRUIT SHELL (Borassus flabellifer Linn.) FROM KISAR ISLAND, SOUTHWEST MALUKU REGENCY FOR ADSORPTION OF METHYL RED DYE Maromon, Ingrid Natasya Tritama; Utubira, Yeslia; Untailawan, Romelos
Molluca Journal of Chemistry Education (MJoCE) Vol 13 No 1 (2023): MJoCE
Publisher : Program Studi Pendidikan Kimia, FKIP, Universitas Pattimura (Chemistry Education Study Program, Faculty of Teacher Training and Educational Sciences, Pattimura University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol13iss1pp56-63

Abstract

Palmyra palm is a species of palmae that grows a lot on Kisar Island where all parts of the plant can be utilized. However, the palmyra palm fruit shell has not been used and that is only thrown away. In this study, palmyra palm fruit shell were made as activated carbon and were characterized using XRD to determine the crystallinity properties of the palmyra palm fruit shell activated carbon and adsorption test was carried out to determine the capacity and efficiency of activated carbon adsorption to methyl red dye. The production of palmyra palm fruit shell activated carbon is carried out through the carbonization stage at 300°C for 1 hour, and followed by chemical activation using H3PO4 10% solution for 24 hours. The results of the analysis using XRD showed that the activated carbon of the palmyra palm fruit shell formed peaks with the highest intensity at diffraction angles of 2θ = 26.5241° and 27.6274° with d-spacing values ​​(Å) = 3.36059 and 3.22884, which are characteristic peaks of carbon and are amorphous. The adsorption of methyl red 20 ppm use batch method, with various contact times of 5, 10, 15, 20, 25, and 30 minutes. The results of showed that on 15 minutes was the optimal time, with 0.25 gram mass of the adsorbent and the adsorption capacity and adsorption efficiency was 0.87 mg/g and 44.3%, respectively.
KAJIAN KINERJA SPEKTROFOTOMETRI UV-VIS PADA ANALISIS SPESI IODIUM DALAM GARAM KONSUMSI Marthen, Kelvin Beny; Untailawan, Romelos; Mariwy, Abraham
Molluca Journal of Chemistry Education (MJoCE) Vol 13 No 2 (2023): MJoCE
Publisher : Program Studi Pendidikan Kimia, FKIP, Universitas Pattimura (Chemistry Education Study Program, Faculty of Teacher Training and Educational Sciences, Pattimura University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol13iss2pp64-73

Abstract

ABSTRAK Telah dilakukan kajian kinerja spektrofotometri UV-Vis pada analisis spesi iodium dalam garam konsumsi. Tujuan dari penelitian ini adalah untuk mengetahui konsentrasi iodium dalam garam konsumsi secara spektrofotometri UV-Vis pada panjang gelombang 500 nm, serta menguji kinerja spektrofotometri UV-Vis untuk parameter linearitas, presisi, akurasi, dan batas deteksi. Hasil analisis menunjukkan bahwa konsentrasi iodium dalam garam beriodium adalah 31,8 ppm. Uji kinerja spektrofotometri UV-Vis untuk parameter linearitas adalah (R2) 0,9949. Presisi untuk larutan standar 2 ppm dengan nilai KV 1,86% dan untuk larutan standar 10 ppm adalah 0,51%. Akurasi untuk larutan standar 2 ppm dengan % recovery sebesar 112,62% dan untuk larutan standar 10 ppm sebesar 117,54%. Sedangkan batas deteksi (LOD) dengan konsentrasi terendah yang masih dapat dideteksi adalah 0,0013 ppm. Hasil ini membuktikan bahwa spektrofotometri UV-Vis yang digunakan dalam penelitian memiliki kinerja yang baik sehingga layak digunakan untuk analisis spesi iodium dalam garam. ABSTRACT A UV-Vis spectrophotometric performance study has been carried out on the analysis of iodine species in iodized salt. This study aims to determine the concentration of iodine in iodized salt by UV-Vis spectrophotometry at a wavelength of 500 nm, as well as test the UV-Vis spectrophotometric performance for parameters of linearity, precision, accuracy, and limit of detection. The results of the analysis showed that the concentration of iodine in iodized salt was 31.8 ppm. The UV-Vis spectrophotometric performance test for the linearity parameter was (R2) 0.9949. The precision for a standard solution of 2 ppm with a KV value of 1.86% and for a standard solution of 10 ppm is 0.51%. Accuracy for 2 ppm standard solution with % recovery is 112.62% and for 10 ppm standard solution is 117.54%. While the limit of detection (LOD) with the lowest concentration that can still be detected is 0.0013 ppm. These results prove that the UV-Vis spectrophotometry used in this study has good performance so that it is suitable for analysis of iodine species in salt.
IMPLEMENTASI MODEL PEMBELAJARAN INKUIRI TERBIMBING PADA KONSEP LARUTAN ELEKTROLIT DAN NON ELEKTROLIT TERHADAP HASIL BELAJAR PESERTA DIDIK KELAS X SMA NEGERI 19 SERAM BAGIAN BARAT Tehupuring, Caren; Manoppo, Yance; Untailawan, Romelos
Molluca Journal of Chemistry Education (MJoCE) Vol 13 No 2 (2023): MJoCE
Publisher : Program Studi Pendidikan Kimia, FKIP, Universitas Pattimura (Chemistry Education Study Program, Faculty of Teacher Training and Educational Sciences, Pattimura University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol13iss2pp106-114

Abstract

Peningkatan Hasil Belajar Peserta Didik Melalui Penerapan Metode Latihan Berstruktur (Latihan Berjenjang) Pada Materi Reaksi Reduksi dan Oksidasi di Kelas X SMA Negeri 27 Maluku Tengah Hataul, Annisa; Al Hamid, Fatma; Untailawan, Romelos
Molluca Journal of Chemistry Education (MJoCE) Vol 14 No 2 (2024): MJoCe
Publisher : Program Studi Pendidikan Kimia, FKIP, Universitas Pattimura (Chemistry Education Study Program, Faculty of Teacher Training and Educational Sciences, Pattimura University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol14iss2pp91-96

Abstract

Telah dilakukan penelitian dengan tujuan mengetahui peningkatan hasil belajar peserta didik melalui penerapan metode latihan berstruktur pada materi reaksi reduksi dan oksidasi kelas X SMA Negeri 27 Maluku Tengah. Sampel yang digunakan adalah 35 peserta didik kelas X MIA 2, pengumpulan data dilakuka menggunaka instrument tes yang terdiri dari tes awal dan tes akhir dan non tes yaitu lembar penilaian afektif, psikomotor, serta LKPD. Berdasarkan hasil penelitian diperoleh hasil belajar peserta didik pada tes awal 5 peserta didik (14%) berada pada kualifikasi cukup sementara itu untuk kualifikasi kurang terdapat 30 peserta didik (86%), hasil analisis data tes akhir diperoleh bahwa hasil belajar peserta didik kelas X mencapai kualifikasi yang berbeda-beda yaitu pada kualifikasi sangat baik terdapat 23 peserta didik (66%), kualifikasi baik terdapat 10 peserta didik (29%), dan kualifikasi cukup terdapat 2 peserta didik (5%). Data pencapaian N-Gain yang diperoleh yaitu 31 peserta didik (89%) yang berada pada kategori tinggi dan 4 peserta didik (11%) yang ada pada kategori sedang, secara keseluruhan rata-rata nilai N-Gain sebesar 0,89 yang berada pada kategori tinggi. Dengan demikian, terdapat peningkatan hasil belajar peserta didik melalui penerapan metode latihan berstruktur pada materi reaksi reduksi dan oksidasi Kata kunci : Metode Latihan Berstruktur (Latihan Berjenjang), Reaksi Reduksi Dan Oksidasi, Peningkata, Hasil Belajar
Co-Authors Abraham Mariwy Al Hamid, Fatma Hataul, Annisa Maromon, Ingrid Natasya Tritama Marthen, Kelvin Beny Nazudin, Nazudin Sunarti Tahapary, Friend Smith Tehupuring, Caren Utubira, Yeslia Yance Manoppo