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All Journal EKSAKTA: Journal of Sciences and Data Analysis JKPK (Jurnal Kimia dan Pendidikan Kimia) Fullerene Journal of Chemistry Oxygenius Journal Of Chemistry Education Stannum : Jurnal Sains dan Terapan Kimia Frontiers Switch: Jurnal Sains dan Teknologi Informasi
Tengker, Soenandar Millian Tompunu
Universitas Negeri Manado
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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Design and Construction of A Pyrolysis Device for Laboratory-scale Liquid Smoke Production Applications Jannah, Miftahul; Saiya, Abdon; karundeng, Marlina; Tengker, Soenandar milian T; Kamaruddin, Kamaruddin; mustapa, Mustapa
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.v10i1.695

Abstract

Asap cair telah banyak diaplikasikan diberbagai bidang. Beberapa penelitian banyak yang mengembangkan metode, alat dan bahan pembuatan asap cair. Penelitian ini bertujuan untuk merancang alat pembuatan asap cair dengan metode pirolisis yang sederhana dalam skala laboratorium. Sasarannya adalah alat ini dapat digunakan oleh mahasiswa untuk praktikum agar semakin menambah wawasan dan keterampilan mahasiswa tentang asap cair. Adapun tahapan penelitian ini adalah dimulai dari studi literatur, desain teknologi, fabrikasi dan pengujian alat serta tahap evaluasi. Hasil yang diperoleh dalam penelitian ini adalah alat pirolisis asap cair telah berhasil dibuat dengan kapasitas 6 kg. berdasarkan hasil pengujian dihasilkan asap cair jenis grade 3.
PENERAPAN PEMBELAJARAN KIMIA BERBASIS CHEMO-ENTREPRENEURSHIP PADA MATERI LARUTAN PENYANGGA KELAS XI SISWA SMA CITRA KASIH MANADO Runtuwene, Christiana Paula; Rumampuk, Rymond; Tengker, Soenandar; Kaeng, Meilanie; Pongoh, Emma
Oxygenius: Journal Of Chemistry Education Vol 7 No 1 (2025): 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.v7i1.722

Abstract

This study aims to determine the effect of applying Chemo-Entrepreneurship (CEP)-based chemistry learning on students' engagement and learning outcomes in the buffer solution material for Grade XI students at SMA Citra Kasih Manado. This research employed a Classroom Action Research (CAR) method conducted in two cycles, each consisting of planning, implementation, observation, and reflection stages. The research instruments included student activity observation sheets and learning outcome tests. The results showed that the application of CEP-based learning significantly increased students' engagement and learning outcomes. The average learning activity score increased from 42.5% (categorized as low) in the first cycle to 90% (categorized as very good) in the second cycle. The average learning outcome score also rose from 56 in the first cycle to 89 in the second cycle, achieving a 100% mastery level. The implementation of Chemo-Entrepreneurship through a research-based learning model proved effective in enhancing student engagement, creativity, and understanding of buffer solution concepts. Therefore, this approach is recommended for use in other chemistry learning topics to foster entrepreneurial potential and 21st-century skills among students.
Effect of Phosphoric Acid (H3PO4) Activation on the Preparation of Activated Carbon from Gymnostoma Rumphianum Wood Tengker, Soenandar Milian Tompunu; Lumingas, Pamela; Tuerah, Jeanne Maria; Jannah, Miftahul; Rampengan, Alfrie Musa
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 10, No 2 (2025): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v10i2.107623

Abstract

The utilization of Roya wood branches (RWB) as raw material for activated charcoal production has not yet been optimized in North Sulawesi, specifically in Wulauan Village, North Tondano District. This study aims to present the results of the analysis of the physical and chemical properties, X-Ray Diffraction (XRD), and Transmission Electron Microscope (TEM) of RWB-based activated charcoal. The production of activated charcoal was conducted in three stages: sample preparation, pyrolysis of RWB at a temperature of 365°C for approximately 3 hours, and activation of RWB charcoal using phosphoric acid (H₃PO₄) at concentrations of 1%, 2%, and 3% for 24 hours. The analysis of physical and chemical properties of both non-activated and H₃PO₄-activated RWB activated charcoal showed that the best quality was obtained at a 3% activator concentration, with a moisture content of 0.1683%, ash content of 2.3321%, volatile matter content (VMC) of 0.9429%, fixed carbon (FC) content of 96.7250%, and iodine adsorption capacity (IAC) of 10,535 mg/g, all of which meet the SNI 06-3037-1995 for activated charcoal. XRD analysis showed that non-activated RWB charcoal had three broad diffraction peaks in the ranges of 9–14°, 20–25°, and 35–50°, along with one sharp peak in the range of 25–30°. After activation with H₃PO₄, only three broad diffraction peaks were observed at 9–14°, 20–25°, and 35–50° for all three H₃PO₄ concentration variations.TEM analysis indicated that non-activated RWB charcoal had particle sizes ranging from 20–33 nm, while after activation with 1% H₃PO₄, the particle sizes ranged from 41–51 nm..
Co-Authors Abdon Saiya Alfrie Musa Rampengan Ana Mardliyah Astuti Amin Billy Gabriel Langi Budi Oktavia Charold Septiano Paulus Dhysa Mentari Sulistyaningsih Emma Julin Pongoh Febrindah Ester Tambalean Freetje Waworuntu hesky julio koloay Iip Izul Falah Jeanne M. Tuerah Jeferson Polii Jefry Wijaya Jenny Kumajas Kaeng, Meilanie Kamaruddin Kamaruddin Khoirotul Ummah Lumingas, Pamela Marlina Karundeng Merly Mira Mangirang Meyti J Rampe Miftahul Jannah Miracle Lendo Mustapa Mustapa Omega Siwu Paat, Vlagia Indira Ravelita Lastriawati Bullu reity feronika Manenda Runtuwene, Christiana Paula Rymond J. Rumampuk Rymond Jusuf Rumampuk Stefan Marco Rumengan Tuerah, Jeanne Maria Wahyu Hendrarti