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Pasymi Pasymi
Department Of Chemical Engineering, Faculty Of Industrial Technology, Universitas Bung Hatta, Padang, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT

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PENGAMBILAN MINYAK ATSIRI BUNGA MELATI DENGAN METODE ENFLEURASI Elmi Sundari; Pasymi Pasymi; Erti Praputri; Sofyan Sofyan
Jurnal Teknologi Pertanian Andalas Vol 25, No 2 (2021)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jtpa.25.2.175-182.2021

Abstract

Pengambilan minyak melati (Jasminum sambac) dengan metode enfleurasi telah dilakukan dengan memvariasikan waktu enfleurasi dan jenis adsorben. Metode enfleurasi dapat mencegah kerusakan minyak atsiri yang diperoleh karena dilakukan pada suhu rendah. Tujuan penelitian untuk melihat jenis adsorben dan berat bunga yang tepat untuk mendapatkan minyak melati optimum. Penelitian dilakukan dengan memvariasikan jenis adsorben (mentega putih dan mentega kuning) dan waktu enfleurasi (6, 10, 12, 16, dan 20 hari). Parameter yang diamati adalah rendemen, komponen minyak, densitas, aroma dan warna minyak yang diperoleh. Hasil penelitian menunjukkan adsorben mentega putih lebih efektif dibandingkan mentega kuning dengan perolehan minyak atsiri tertinggi pada waktu enfleurasi 20 hari dan jumlah bunga 230 gram dengan rendemen 8,69%. Perolehan minyak terendah dengan rendemen 5,21% menggunakan adsorben mentega kuning pada waktu enfleurasi 10 hari dengan berat bunga 115 gram. Komponen-komponen dominan yang terdeteksi dalam minyak diantaranya adalah linalool (8,82%), benzyl acetat (4,58%), hexyl salicylate (4,90%), 1-Phenanthrenecarboxylic acid (5,99%), versalide (3,14%), dan 3-phenyl-propenal (3,29%). Minyak melati yang dihasilkan berwarna kuning muda jernih dengan densitas berkisar antara 0,8821-0,8845 g/mL pada penggunaan adsorben mentega putih dan 0,8175-0,8675 g/mL dengan adsorben mentega kuning. Hasil uji organoleptik menunjukkan rata-rata panelis menyukai aroma dan warna pada minyak melati pada perlakuan waktu enfleurasi 6, 10, dan 12 hari dengan tingkat kesukaan panelis 100% suka
Experimental and Numerical Investigations of Fluid Flow Behaviors in a Biomass Cyclone Burner Pasymi Pasymi; Yogi W Budhi; Yazid Bindar
ASEAN Journal of Chemical Engineering Vol 20, No 1 (2020)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.56708

Abstract

A combination of the experimental and numerical methods was used to investigate the fluid flow behaviors in a proposed cyclone burner. Recirculation flow and pressure drop, two of the important fluid flow behaviors that affect the burner's performance, have been studied here. Experimentally, the recirculation flow phenomenon in the burner was observed through paper slices dynamic in a transparent burner, and pressure drop was measured using a tube manometer. Meanwhile numerically, the fluid flow behaviors were simulated using the standard k-e turbulence model, under Ansys-Fluent software. The simulation results showed that, at a certain value of inlet aspect ratio (RIA) and initial tangential intensity (IIT), especially for high IIT, the recirculation flow phenomenon was clearly observed in the center of the burner cylinder which closely resembles a tornado-tail. The indication of existence recirculation flow was also found from the experiment results. The study also exhibited that the results of simulated static pressure drop were closely approaching the experiment results, particularly for IIT values £ 4.3. The mean deviation of static pressure between the simulation and the experiment results, for a varied range of RIA and IIT,was about 15%. From the results above, it was obvious that fluid flow behaviors (recirculation flow and static pressure) in the proposed cyclone burner are greatly influenced by the RIA and IIT values, where the IIT effect was more significant compared to the RIA. This study also suggests that, the standard k-e turbulence model could be relied upon to well predict the behaviors of fluid flow in the proposed cyclone burner, at low to moderate swirl intensities.
Co-Authors Elmi Sundari Erti Praputri Sofyan Sofyan Yazid Bindar Yogi W Budhi