Article Per Year (5 Year)
p-Index From 2021 - 2026
0.659
P-Index
This Author published in this journals
All Journal Molluca Journal of Chemistry Education (MJoCE)
Utubira, Yeslia
Unknown Affiliation
Chemistry Education

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 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.
EFISIENSI DAN KAPASITAS ADSORPSI KARBON AKTIF DARI KULIT JAGUNG UNTUK MENURUNKAN KADAR LOGAM Fe Sahania, Ria Resti; Utubira, Yeslia; Manuhutu, Julita B.
Molluca Journal of Chemistry Education (MJoCE) Vol 14 No 1 (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/MJoCEvol14iss1pp60-69

Abstract

Kelimpahan kulit jagung dari hasil panen belum dimanfaatkan dengan maksimal sehingga masih menjadi limbah. Salah satu upaya untuk memaksimalkan pemanfaatan limbah kulit jagung adalah sebagai adsorben karbon aktif. Kulit jagung dikarbonisasi pada suhu 320oC selama 2 jam, dan diaktivasi menggunakan KOH selama 24 jam. Berdasarkan hasil analisis dengan Surface Area Analyzer (SAA) diperoleh luas permukaan karbon aktif 1.35896 m2/g, volume pori total 3.0099 cm3/g dan diameter pori rata-rata 4.4297 nm, yang menunjukkan bahwa pori karbon aktif kulit jagung berukuran mesopori. Kulit jagung memiliki kemampuan sebagai adsorben yang dapat mengikat adsorbat yaitu logam Fe. Pengukuran kadar logam Fe sebelum dan sesudah pengontakan menggunakan analisa Spektrofotometer Serapan Atom (SSA). Variasi waktu kontak yang dilakukan yaitu 15, 30, 45, 60, 90 dan 120 menit terhadap larutan Fe 20 ppm. Diperoleh hasil kemampuan penyerapan logam Fe berturut-turut sebesar 0.4366 mg/L, 1.0515 mg/L, 0.4499 mg/L, 0.5527 mg/L, 0.4781 mg/L dan 0.5272 mg/L. Hasil perhitungan menunjukkan bahwa efisiensi dan kapasitas adsorpsi yang optimum terdapat pada waktu kontak 30 menit dengan massa adsorben 0.5 gram, masing-masing adalah 26,288% dan 1.0515 mg/g. Keywords: Kulit Jagung, Karbon Aktif, Adsorben, Logam Fe, efisiensi dan kapasitas adsorpsi
DEVELOPMENT OF ANDROID-BASED INTERACTIVE LEARNING MEDIA USING SMART APPS CREATOR (SAC) ON THERMOCHEMISTRY Lokollo, Lita; Utubira, Yeslia; Pelu, Siti Harisa
Molluca Journal of Chemistry Education (MJoCE) Vol 15 No 1 (2025): 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/MJoCEvol15iss1pp12-20

Abstract

The integration of technology in learning allows the creation of various interactive media that can improve the effectiveness of learning. This study aims to develop interactive learning media based on Android using Smart Apps Creator on thermochemistry material. The development is carried out using the 4-D development model, which includes the stages of define, design, develop, and disseminate. However, this study is limited to the development stage. The research sample was students of Class XI MIA at SMA Negeri 31 Central Maluku. The instruments used were expert validation sheets and student response questionnaires. Data analysis was conducted descriptively quantitatively based on the assessment categories of media feasibility and practicality. The results of the study obtained showed that the average percentage of feasibility tests by material experts was 96% and media experts 94%, with a very feasible category, while the average percentage of practicality tests by students was 98%, with a very practical category. Thus, the interactive learning media based on Android using the Smart Apps Creator that was developed is very feasible and very practical to use in the chemistry learning process, especially thermochemistry materials.
Co-Authors Julita B Manuhutu Lita Lokollo Maromon, Ingrid Natasya Tritama Pelu, Siti Harisa Sahania, Ria Resti Untailawan, Romelos