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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan
Shintia Oktaviani
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Education Engineering

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Pemurnian Bioetanol Hasil Fermentasi Nira Nipah Menggunakan Proses Destilasi-Adsorpsi Menggunakan Adsorben Silica Gel Shintia Oktaviani; Chairul Chairul; Silvia Reni Yenti
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The rapid rate of world population growth conduces demand and supply of fuel is not balance. So that, energy reserves has been depleted in large numbers. Especially fossil fuels which is a main energy. The government has compiled program and policy for development of bioethanol and biodiesel to resolve energy crisis in indonesia which targeted in 2025 can be approximately 15-20% fuels need to fulfill transportation sector and the national industry. This research aims to produce bioethanol fuel grade-adsorption using distillation methods, determine the effect of the ratio of silica gel: bioethanol and height of the adsorbent in the column for producing bioethanol fuel grade. The raw material is bioethanol from nipa sap fermentation results with 13% ethanol content. Ethanol content obtained not too high previously, so that should be took a process that can be increase the purity of bioethanol with distillation process-adsorption. This research divided into two stages. First stage is nipa sap bioethanol distiled up to 96% concentration and second stage is distillation-adsorption using silica gel adsorbent. Independent variables on this research is ratio of silica gel : bioethanol and height of adsorbent in the adsorption column. The most influence process to review bioethanol purification is distillation-adsorption silica gel with ratio: ethanol 1:2 and a height of adsorbent in the column is 3.5 cm with purity of 99,6% and had been categorized fuel grade bioethanol.Keywords: Silica gel, bioethanol, bioethanol fuel grade, nypa, distillation adsorption process
UJI Escherichia coli PADA JAJANAN BAKSO BAKAR DI SEKOLAH KECAMATAN TAMPAN KOTA PEKANBARU DAN POTENSINYA SEBAGAI RANCANGAN LEMBAR KERJA SISWA PADA PEMBELAJARAN BIOLOGI DI SMA Shintia Oktaviani; Irda Sayuti; Sri Wulandari
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 4, No 1 (2017): Wisuda Februari 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract: This research aims to know the presence of the bacteria Escherichia coli on grilled meatball snacks in schools of all Tampan districts in Pekanbaru city in April-May 2016. This research is an descriptive study was conducted with the 2 phases i.e. phase test the bacteria Escherichia coli in the lab and phase student worksheets design. The samples are taken by random purposive sampling method are purchased from 15 traders in different schools is soul around Tampan districts Pekanbaru city based on criteria that assigned and using the method Most Probable Number (MPN) with three stages of the test which consists of presumtive test, confirmative test and complete test using different growing media and incubated at 37oC temperature during 2x24 hours. The results obtained that from 15 samples examined obtained 11 samples contaminated by Escherichia coli. Research results are then used as material enrichment on teaching biology in senior high school class X on the Eubacteria material in the form of a student worksheets design.Key words: Escherichia coli, Grilled Meatball, Student Worksheet Design.
Co-Authors Chairul Chairul Irda Sayuti Silvia Reni Yenti SRI WULANDARI