Claim Missing Document
Check
Articles

Found 3 Documents
Search

RANCANGBANGUN DAN UJI PERFORMANSI SINGLE STIRRING REACTOR (SSR) PUTARAN SEARAH PADA BERBAGAI RPM UNTUK PRODUKSI BIODIESEL furqon, Furqon; Ritonga, Abdul Mukhlis; Maksum, Ali
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 7, No 1 (2018): April
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.423 KB) | DOI: 10.23960/jtep-l.v7i1.9-14

Abstract

Produksi biodiesel dengan metode katalitik membutuhkan sistem pengadukan agar trigliserida dan metanol yang mempunyai sifat tidak saling bercampur dapat bercampur dengan baik. Aplikasinya sebagian besar produksi biodiesel masih menggunakan beberapa reaktor dan menggunakan putaran tinggi. Oleh karena itu, akan lebih baik jika proses produksi biodiesel menggunakan satu reaktor sebagai tempat terjadi reaksi tersebut dan menggunakan putaran yang tidak terlalu tinggi sehingga lebih efisien dalam penggunaan energi. Oleh sebab itu, tujuan dari penelitian ini adalah merancang single stirring reactor (SSR) pada putaran searah dan menguji performansi SSR putaran searah. Rancangbangun SSR dilakukan dengan melakukan tahapan perancangan dan perhitungan analisis teknik. Alat yang dibuat merupakan tipe batch dan skala laboratorium. Alat yang dibuat diujicoba saat tanpa beban dan dengan beban yaitu dengan memproduksi biodiesel menggunakan bahan minyak kelapa sawit, metanol dan katalis KOH. Hasil biodiesel (metil ester) dianalisis dengan GC-MS (Gas Chromatography-Mass Spectrometry). Hasil perancangan alat SSR mempunyai dimensi tabung reaktor tinggi 400 mm, diameter 150 mm dan tebal 1 mm menggunakan bahan Stainless steel 304. Hasil pengujian mendapatkan alat mampu bekerja dengan baik sesuai performansi yang diharapkan, baik dengan beban maupun tanpa beban. Hasil uji performansi alat SSR putaran searah saat memproduksi biodiesel dengan bahan minyak kelapa sawit dan metanol (rasio 1:6), katalis KOH 0,5%, suhu 45 oC, dan waktu 30 menit pada putaran 200 rpm, 350 rpm, dan 500 rpm berturut-turut menghasilkan kadar metil ester 98,89%, 99,55%, dan 99,50%, yang berarti sudah memenuhi syarat mutu biodiesel berdasarkan SNI 7182:2015.
GESTALT GAME TO IMPROVE STUDENTS’ ADAPTABILITY IN PONDOK PESANTREN Rahman, Imas Kania; Furqon, Furqon
International Journal of Education Vol 6, No 1 (2011): November 2011
Publisher : UPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ije.v6i1.5284

Abstract

This study aims at finding the effectiveness of guidance and counselling through GestaltGame technique in improving students’ adaptability in two Islamic boarding schools. Thestudy was conducted by using a pretest-posttest nonequivalent group design involving fourgroups of students from two different Islamic boarding schools. The study considered theinflunce of gender and boarding school environment towards the effectiveness of GestaltGame. It was conducted by controlling heterogenity in students’ adaptability before thetreatment as well as students’ religiosity. The study shows that Gestalt Game is effectivein improving adaptability of the students in the two Islamic boarding schools involvedin the study. Moreover, the study reveals that Gestalt Game does not affect gender andIslamic boarding schools’ environment.Keywords: Gestalt Game; students’ adaptability; students’ religiosity
Identifikasi Perubahan Sifat Fisik Jambu Biji Merah (Psidium guajava L.) Selama Masa Penyimpanan pada Pendingin Evaporatif Termodifikasi Ritonga, Abdul Mukhlis; Furqon, Furqon; Ifadah, Razifah Nur
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 4 No 2 (2020): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (985.604 KB) | DOI: 10.33019/agrosainstek.v4i2.121

Abstract

Guava (Psidium guajava L.) is one of the horticultural products that could live in tropical areas and has a high economic value. Tropical fruit used to be damaged quickly remaining due to the temperature and humidity condition. Postharvest treatment is required to extend the shelf life of products and to maintain the quality of products such as evaporative coolers for storage. This research aims to: 1). Calculating the rate of decrease for red guava fruit quality during storage in an evaporative cooler and room temperature. 2). Analyze transformation in the physical properties of red guava fruit during storage in an evaporative cooler and room temperature. Variables measured are the effectiveness of cooling, temperature, relative humidity, moisture content, weight loss, hardness, brix levels, and colors. The method of this study was experimental with the object of research is guava, which has a diameter of 7-8 cm horizontal and vertical length of 6-8 cm. Guava fruits that used were obtained from guava plantation in Kampung Penyisihan, Ketenger Village. Data analysis in this study using the equations of kinetical reaction. The results showed that the treatment of evaporative cooling storage can maintain the quality of weight loss, color (Lab), and violent guava. While the temperature treatment room can maintain the quality of the water content, brix levels guava during storage.