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All Journal ARIKA BIOEDUPAT: Pattimura Journal of Biology and Learning BAKIRA: Jurnal Pengabdian Kepada Masyarakat Innovation for Community Service Journal
Hellna Tehubijuluw
Universitas Pattimura
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Social Sciences Other

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Analisis Kandungan Unsur Hara Ca, Mg, P, dan S Pada Kompos Limbah Ikan Hellna Tehubijuluw; I Wayan Sutapa; Polansky Patty
ARIKA Vol 8 No 1 (2014)
Publisher : Industrial Engineering Study Program, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (11466.854 KB)

Abstract

Telah dilakukan penelitian tentang analisis kandungan Ca, Mg, P, dan S pada kompos limbah ikan. Kompos limbah ikan diperoleh dengan cara mencampurkan limbah ikan yang telah dijemur selama satu minggu dengan kompos yang berasal dari sisa-sisa tumbuhan, ampas gergaji, dan abu sekam. Campuran kompos dan limbah ikan dimasukan ke dalam tanur pada suhu 600 C selama 45 menit. Analisis kandungan Ca dan Mg menggunakan Spektrofotometer Serapan Atom dan analisis P dan S menggunakan Spektrofotometer UV-Vis. Hasil analisis kandungan unsur hara Ca, Mg, P, dan S masing-masing adalah Ca 9,58% (b/b), Mg 2,97% (b/b), dan S 6,81% (b/b).
Biodiesel from the waste cooking oil is catalyzed by egg-shell of purebred chicken with methanol as a solvent Priska Marisa Pattiasina; I Wayan Sutapa; Hellna Tehubijuluw
BIOEDUPAT: Pattimura Journal of Biology and Learning Vol 3 No 1 (2023): Bioedupat : Pattimura Journal of Biology and Learning
Publisher : Program Studi Pendidikan Biologi, Pascasarjana, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/bioedupat.v3.i1.pp71-74

Abstract

The synthesis of biodiesel from the waste cooking oil was carried out using the catalyst from egg shell of purebred chicken with methanol as a solvent. Synthesis the biodiesel was prepared in two steps, there are esterification and transesterification. In esterification was conducted in mol ratio of methanol and waste cooking oil were 9:1, with H2SO4 as a catalyst. Transesterification with mol ratio methanol and waste cooking oil were 12:1, with CaO from egg shell of purebred chicken as a catalyst. CaO catalyst was yielded by calcinations egg shell of purebred chicken on 1000 ⁰C for two hours. Calcination product was characterized with X-RD to determine of CaO. Result of biodiesel was characterized based on 1H-NMR, FTIR, GC-MS, dan ASTM (American Standard Testing of Materials). Yielded of biodiesel theoretically was 40.298% and experiment was 36.779%. Main component that resulted there is methyl stearic (40.21%).
PELATIHAN PEMBUATAN VIRGIN COCONUT OIL (VCO) DENGAN METODE BASAH KEPADA IBU-IBU PKK NEGERI KILANG SEBAGAI UPAYA PENINGKATAN NILAI EKONOMIS BUAH KELAPA Serly J. Sekewael; Netty Siahaya; Hellna Tehubijuluw; Imanuel Berly Delvis Kapelle; Fensia Analda Souhoka; Linda Lattuputty
BAKIRA: Jurnal Pengabdian Kepada Masyarakat Vol 3 No 1 (2022): BAKIRA : Jurnal Pengabdian Kepada Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LP2M) Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/bakira.2022.3.1.45-52

Abstract

The training for making Virgin Coconut Oil (VCO) with the wet method has been carried out for the PKK women of Negeri Kilang, South Leitimur District, Ambon City. VCO with the wet method using liquid coconut milk as raw material. The oil from this liquid coconut milk is extracted by precipitation. After that, the oil that has been separated from water and other solids is transferred to be filtered to make it clear. The steps of this training activity are carried out in three stages, namely preparation, implementation, and evaluation. In the preparatory stage, the team conducted a preliminary survey to determine the field conditions, and the place to be used; and to prepare a plan for the activities to be carried out. Next, the team prepares materials and equipment that will be used in making VCO. At the implementation stage, the team conducted counseling for PKK women by delivering material on how to make VCO and the benefits of VCO in the health sector. Then proceed with the manufacture of VCO with the wet method. In this activity, all participants were trained on how to make VCO, starting from the procedure for making coconut milk from coconuts to forming VCO. The third stage, namely the evaluation stage, is carried out to measure the level of success of the activities that have been carried out. The output produced from this activity is a creative product of coconut plants, namely VCO which has been made by women of PKK Negeri Kilang to be used daily.
Pemanfaatan Software Kimia Komputasi Untuk Siswa SMA Negeri 2 Seram Bagian Barat Mario Rowan Sohilait; Nelson Gaspersz; I Wayan Sutapa; Hellna Tehubijuluw; Imanuel B. D Kapelle; Rahayu Rahayu; Priska Marissa Pattiasina; Fensia Analda Souhoka; Nurani Hasanela
Innovation for Community Service Journal Vol 1 No 1 (2023): April 2023
Publisher : Department of Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/icsj.v1i1.8551

Abstract

Pandemi global Covid-19 yang melanda seluruh dunia turut berdampak signifikan di bidang pendidikan. Salah satunya proses pembelajaran di tingkat SMA yang berubah dari kelas tatap muka menjadi kelas online, menyebabkan ada siswa yang kesulitan memahami pelajaran. Kurangnya pemahaman materi sebelumnya menyebabkan siswa kesulitan beradaptasi pada materi lanjutan pada saat kelas luring berlangsung, misalnya untuk pelajaran kimia. Oleh karena itu, untuk meningkatkan pengetahuan dan pemahaman siswa-siswi SMA tentang kimia, dapat dilakukan melalui pendekatan kimia komputasi. Kegiatan pengabdian masyarakat yang dilakukan bertujuan untuk menumbuhkan minat siswa-siswi SMA, sehingga lebih mengenal dan dapat mengoperasionalkan software kimia komputasi sebagai pembelajaran kimia yang menarik. Kegiatan ini dilakukan dengan metode ceramah dan praktek langsung bagi siswa-siswi. Ketua tim menyampaikan materi tentang pengantar kimia komputasi, aplikasi dan manfaat kimia komputasi dalam bidang sains, serta bagaimana pemodelan struktur molekul menggunakan program HyperChem dan Gaussian. Pada tahap praktek langsung, siswa dilatih mengoperasionalkan komputer dan memanfaatkaan software untuk mempelajari struktur molekul organik sederhana. Molekul etanol digambar oleh siswa menggunakan ChemSketch dan optimasi geometri menggunakan Hyperchem, sedangkan visualisasi molekul air menggunakan Gaussian. Setelah kegiatan pengabdian berlangsung, siswa-siswi SMA Negeri 2 Seram Bagian Barat lebih memahami konsep tentang struktur molekul dan lebih antusias ingin mempelajari kimia setelah penggunaan software kimia komputasi tersebut.
Co-Authors Fensia Analda Souhoka Gaspersz, Nelson Hasanela, Nurani I Wayan Sutapa Kapelle, Imanuel B. D. Linda Lattuputty Netty Siahaya Polansky Patty Priska Marisa Pattiasina Priska Marissa Pattiasina Rahayu Rahayu Serly J. Sekewael Sohilait, Mario Rowan