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All Journal Jurnal Ilmiah Flash Haumeni Journal of Education Jurnal Masyarakat Mengabdi Nusantara Jurnal Lembaga Pengabdian Kepada Masyarakat Undana Pandawa : Pusat Publikasi Hasil Pengabdian Masyarakat Jurna Beta Kimia Media Sains
Kasimir Sarifudin
Program Studi Pendidikan Kimia, Fakultas Keguruan Dan Ilmu Pendidikan, Universitas Nusa Cendana
Religion Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Journal : Media Sains

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Studi Produksi dan Karakterisasi Komposisi Kimia Beberapa Kategori Asap Cair dari Tempurung  Lontar (Borassus flabellifer L.) Sarifudin, Kasimir; Naibaus, Richard Veqiyanus; Parera, Lolita A.M.
Media Sains Vol. 24 No. 2 (2024): Jurnal Media Sains
Publisher : Pendidikan MIPA Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69869/a9vk2e82

Abstract

This study aims to investigate the production and characterization of the chemical composition of various quality classifications of liquid smoke that is derived from lontar Shells. Liquid smoke is generated from dried lontar shell raw material that takes on pyrolysis at approximately 400 ℃. A vertical column-model pyrolyzer equipped with a 6-meter-long spiral-shaped condenser supports the productivity of the pyrolysis process. After being collected, the liquid smoke is allowed to settle for a duration of seven days. The process involves distillation at 130℃, followed by purification through a zeolite column and activated charcoal derived from lontar shells, resulting in grades 3, 2, and 1. The characterization of the chemical composition of each liquid smoke grade was conducted using GC-MS, in addition to the determination of acidity via acid-base titration. The findings indicate that the average yield of liquid smoke derived from dried lontar shells is 44.35% of the weight of the initial raw material. The composition of grade 3 liquid smoke includes p-cresol at 18.28%, phenol (2-methyl) at 14.79%, and phenol (2-methoxy) at 10.09%. It also has an acid content of 5.97% and contains a total of 50 compounds. The acid content of grade 2 liquid smoke is 8.70%, with p-Cresol being the most dominant component at 20.70%. Other significant constituents include phenol, 2-methoxy at 14.51%, and phenol, 3-methyl at 11.69%. The acid content of grade 1 liquid smoke is measured at 9.23%. The primary components include p-Cresol at 20.29%, followed by phenol, 3-methyl at 16.36%, and phenol, 2-methoxy at 16.18%.
Toksisitas beberapa kategori asap cair dari kayu kusambi dan tempurung kelapa menggunakan metode Brine Shrimp Lethality Test Kasimir Sarifudin; Adytia Dwipatria de Gatas; Heru Christianto; Parera Parera
Media Sains Vol. 23 No. 2 (2023): Jurnal Media Sains
Publisher : Pendidikan MIPA Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to determine the level of toxicity in various categories of liquid smoke from kusambi wood and coconut shells. The liquid smoke produced from the pyrolysis of kusambi wood and coconut shells at ±400 ℃. Liquid smoke resulting from pyrolysis then distilled to achieve grade 3. Grade 3 liquid smoke filtered in zeolite and activated charcoal column to obtain grade 2 and  1 categories. The toxicity test was conducted using the BSLT method of 48-hour-old Artemia salina Leach shrimp larvae. The toxicity level of each liquid smoke was identified by the percentage of shrimp larvae mortality and determination of lethal concentration (LC50). Determination of total phenol content using a Shimadzu UV-Vis 1780 spectrophotometer. The results showed that toxicity of liquid smoke from the pyrolysis of kusambi wood and coconut shells is toxic, with LC50 <1000 ppm, while the Kusumbi wood and coconut shells liquid smoke from distillation processes, grade 2 and grade 1 are non-toxic, with the LC50 > 1000 ppm.
Sintesis dan Karakterisasi Sifat Keasaman dan Morfologi Katalis K-Co-Mo/ZAAEF Kasimir Sarifudin; Maria Erfina Karfona
Media Sains Vol. 25 No. 1 (2025): Terbitan Juni 2025
Publisher : Pendidikan MIPA Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69869/0ha67z50

Abstract

This research intends to determine variations in acidity and surface morphology of the catalyst while employing different quantities of Mo and Co. Natural zeolite from Ende-Flores was activated via a hydrothermal method, accompanied by chemical activation utilizing HF, HCl, and NH₄Cl. The K-Co-Mo/ZAAEF catalyst was synthesized by the co-impregnation method utilizing solutions of CoCl₂∙6H₂O, (NH₄)₆Mo₇O₂₄∙4H₂O, and K₂CO₃ as precursor compounds for the metals K, Co, and Mo. The catalyst activation included calcination, oxidation, and reduction procedures at 500 °C, utilizing nitrogen, oxygen, and hydrogen gases, respectively. The catalyst surface acidity was measured using the gravimetric technique with pyridine vapor. The research findings indicate that the acidity of the catalyst varies with varied molar ratios of Mo/Co precursor metals. The catalyst exhibited an increase with varied molar ratios of Mo/Co precursor metals from 0 to 0.6, whereas those with molar ratios over 0.6 showed decreasing values. The K-Co-Mo0.6/ZAAEF catalyst has the highest surface acidity at 0.0946 mmol/gram. The findings from functional group identification via FT-IR indicate that the catalyst comprises Lewis and Brønsted acid sites. A modest quantity of Mo precursor metal, with a Mo to Co precursor metal ratio of 0.3-0.6, yields a catalyst exhibiting an absorption band for Brønsted acid sites; conversely, a higher quantity of Mo precursor metal does not produce this absorption band. Microscopic test results indicate that the surface morphology of the catalysts varies with differing quantities of Mo/Co precursor metals. The K-Co-Mo0.6/ZAAEF catalyst has a well-dispersed surface shape characterized by a more homogeneous particle dispersion relative to the other catalysts.
Sintesis dan Karakterisasi Komposisi Unsur, Oksida dan Stabilitas Termal Katalis Berbasis CaO, MgO dan SiO2 Kasimir Sarifudin; Sri Adeningsi Petroni Henukh
Media Sains Vol. 25 No. 2 (2025): Edisi Desember 2025
Publisher : Pendidikan MIPA Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69869/w6v1eh59

Abstract

Characterizing the elemental constitution, composition of oxides, and thermal stability of CaO/SiO₂, MgO/SiO₂, and CaO-MgO/SiO₂ catalysts has been the subject of this research. The sol-gel process was used to convert natural zeolite into silica. We used HCl in order for the silica to settle out after dissolving it in NaOH from the zeolite framework. Hard water deposits were transformed into CaO through the sol-gel process. HCl was utilized during the hydrolysis procedure, and Na₂CO₃ was employed during the condensation stage. The mixture was then calcined and dried. When heated, the precursor MgCO₃ breaks down into MgO. CaO and MgO are dispersed using the wet impregnation process onto the SiO₂ support's surface. XRF equipment was used to characterize each material's elemental and oxide composition. TGA was used to examine each catalyst's thermal stability. According to the elemental and oxide composition characterization results, each material had more than 90% major elements and oxides and less than 1% impurities. SiO₂ lost 4% of its weight during the thermal stability test, which was conducted between 30 and 800°C at a rate of 10°C/minute. The weight loss for MgO/SiO₂, CaO, CaO-MgO/SiO₂, and CaO/SiO₂ was 12.5%, 18.14%, 25.27%, and 27.82%, respectively. According to each material's mass loss, SiO₂ > MgO/SiO₂ > CaO > CaO-MgO/SiO₂ > CaO/SiO₂ was the order of thermal stability from most stable to least stable.
Co-Authors Adytia Dwipatria de Gatas Budiana, I Gusti M. N. Duma Pabiban, Duma Heru Christianto I Gusti M.N Budiana I Gusti N.Budiana Jasman Jasman Jasman Jasman Jasman, - Johnson N Naat Kurnia, Elisabet Lalang, Arvinda C. Lestarani, Dewi Limahelu, Ferdinand Alberth Lolita A.M. Parera Maria Erfina Karfona Mikael Namas Naibaus, Richard Veqiyanus Ndak, Yulita A. Nenohai, Jacky Anggara Neolaka, Yantus A B Ni Wayan O.A.C. Dewi Parera Parera Parera, Lolita A. M. Parera, Lolita A.M. Sri Adeningsi Petroni Henukh Sudirman Sudirman