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Frans Luntungan
Politeknik Negeri Manado
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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PEMBUATAN BIOETANOL DARI NIRA AREN SEBAGAI ENERGI ALTERNATIF Frans Luntungan; Herotje Siwi; Artian Sirun; Priyono Priyono
Otopro Vol 18 No 1 Nov 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v18n1.p18-22

Abstract

This research carried out the manufacture of bioethanol by utilizing palm sap as an alternative energy. Bioethanol is ethanol that can be produced through the fermentation of glucose, to produce bioethanol which is then carried out by distillation. Bioethanol is also a biofuel and one of its uses as an environmentally friendly alternative fuel. The goal to be achieved in this study is to produce bioethanol with the influence of the length of time of heating and the temperature of heating palm sap water in the distillation apparatus on the levels of bioethanol produced.  The raw material for the production of bioethanol was palm juice with natural fermentation for three days, then heated in a distillation apparatus with a heating temperature of 84-86oC, 87-89oC and 90-92oC. and the standard measuring instrument used to measure bioethanol levels is an alcohol meter.  The results of the research conducted, it can be seen that the effect of the length of time and temperature of heating palm sap in the distillation apparatus produces a volume of bioethanol of: 84-86oC = 256 ml, 87-89oC = 330 ml, 90-92oC = 383 ml, this can be seen also that the higher the heating temperature of the palm sap in the distillation apparatus resulted in a decrease in the bioethanol content, namely: 84-86oC = 83.8 %, 87-89oC = 80.8 %, 90-92oC = 77.6%. So to get a good bioethanol content, namely at a heating temperature of 84-86oC, produce bioethanol quality of 83.8%.
OPTIMALISASI KUALITAS PELAYANAN MAHASISWA MELALUI PENGELOLAAN ARSIP DINAMIS DI PERPUSTAKAAN POLITEKNIK NEGERI MANADO Jufrina Mandulangi; Juliet P.T. Makinggung; Sonny Kasenda; Frans Luntungan
Journal of Business Administration (JBA) Vol 2, No 2 (2022): Desember 2022
Publisher : Jurusan Administrasi Niaga, Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/jba.v2i2.3710

Abstract

Libraries are institutions that carry out service-based activities. The fact is that to borrow books in the library needs long time affecting completion of students’ final project. There are also library officers serving students angrily. Consequently, many students look for books elsewhere. It is assumed that the optimization of student service quality is influenced by dynamic archive management at the Manado State Polytechnic Library. This study uses quantitative analysis in the form of multiple regression and correlation levels by carrying out several tests, namely classical tests such as multicollinearity, heteroscedasticity, and autocorrelation tests using the SPSS version 26 computer program. The results of the research showed that archive management storage systems, archive management officers, archive managemet knowledge have a positive and significant impact on students’ satisfaction. Meanwhile, archive managemet equipment had no effect on students’ satisfaction.
Co-Authors Artian Sirun Herotje Siwi Juliet P.T. Makinggung Mandulangi, Jufrina Priyono Priyono Sonny Kasenda