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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of Student Research
Abdullah Syafi’i
Unknown Affiliation
Humanities Computer Science & IT Economics, Econometrics & Finance Education Engineering Public Health Social Sciences

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Sintesis Biodiesel Dari Minyak Nyamplung Menggunakan Katalis Geopolimer: Pengaruh Suhu Reaksi Transesterifikasi Dan Rasio Mol Minyak Terhadap Metanol Abdullah Syafi’i; Edy Saputra; Zuchra Helwani
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Petroleum reserves in Indonesia are increasingly depleted, requiring the use of alternative energy that is environmentally friendly and renewable like biodiesel. Biodiesel can be made by transesterification process of vegetable oils. Process of making biodiesel commonly use homogeneous catalyst which has the disadvantage the formation of by products such as complexity of the separation of catalyst. Therefore, in this study biodiesel was synthesized from calophyllum inophyllum oil by using geopolymer catalyst. Geopolymer catalyst is first synthesized by reacting sodium silicate, metakaolin, NaOH, and water. Several variations of the process variables were done to assess its influence on yield of biodiesel. The variables were used consist of a dependent variables and independent variables. The dependent variables were calophyllum inophyllum oil weight of 50 grams, 3%-wt of catalyst concentration, reaction time of 120 minutes, and stirring speed of 400 rpm, while the independent variables which variation molar ratio of oil:methanol 1:6 and 1:9 and variations of temperature 55 and 65 oC. Physical characterization were done including density 871 kg/m3, kinematic viscosity 4.38 mm2/s, acid number 0.41 mg-KOH/g biodiesel and flash point 140°C respectively accordance with the standards of Indonesian biodiesel (SNI 7182:2015).Keywords: biodiesel, catalyst, calophyllum inophyllum oil, geopolymer, yield
MENINGKATAN KECERDASAN BAHASA PADA ANAK USIA DINI MELALUI METODE STORY TELLING DI RA NURUL ANWAR Abdullah Syafi’i; Septi Gumiandari
Journal of Student Research Vol 1 No 1 (2023): Januari: Journal of Student Research
Publisher : Sekolah Tinggi Ilmu Ekonomi Trianandra

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1088 KB) | DOI: 10.55606/jsr.v1i1.942

Abstract

Bahasa adalah alat komunikasi untuk menyampaikan maksud atau tujuan dalam hal ini kemajuan bangsa mungkin sangat penting dalam memimpin perkembangan yang lainnya khususnya untuk anak-anak usia dini yang memang masih perlu dilatih. Dalam penelitian ini bertujuan agar mengetahui media story telling ini dapat meningkatkan kecerdasan bahasa khusunya pada anak usia dini. Penelitian ini menggunakan metode kualitatif yaitu dengan mengumpulkan analisis data dan fakta lapangan dengan mewawancarai narasumber yang melibatkan guru taman kanak-kanak. Dari hasil penelitian ini dapat diketahui bahwasannya media story telling dapat meningkatkan kecerdasan bahasa pada anak usia dini, namun tidak luput dari kreatifitas guru itu sendiri dalam penyampaian pembelajaran dalam media ini.
Co-Authors Edy Saputra Septi Gumiandari Zuchra Helwani