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M. Yunus
Politeknik Negeri Lhokseumawe
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering

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Optimalisasi Isolasi Patchouli Alkohol Dari Minyak Nilam (Patchouli Oil) Dengan Metode Distilasi Vakum M. Yunus; Munawar Munawar; Haris Z.A
Jurnal Teknologi Vol 21, No 1 (2021): April 2021
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (235.964 KB) | DOI: 10.30811/teknologi.v21i1.2195

Abstract

This study aims to isolate the alcoholic patchouli from patchouli oil using a vacuum distillation method using vacuum distillation unit. The isolation process is conducted by varying vacuum pressure, distillate volume, and remaining residue volume. The vacuum pressure variated at 1, 1,5, 2, and 2,5 mmHg, distillate volume by 70, 80, and 90 ml, while remaining residue volume at 10, 20, and 30 ml. Samples were analyzed using GC-MS to determine the concentration of patchouli alcohol and analyzed using a pycnometer to determine its density. The results showed that the use of low pressure affected separating patchouli alcohol from patchouli oil. The highest patchouli alcohol content from the isolation results is 100% obtained in 10 ml of remaining residue volume at a pressure of 2 mmHg. This vacuum distillation method is quite effective.
Innovation in Liquid Potassium Fertilizer Made from Seawater and Coconut Husk (Cocos nucifera) Siti Rismariam; M. Yunus; Irwan Irwan
Jurnal Teknologi Vol 26, No 1 (2026): April 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i1.8480

Abstract

This study innovates a liquid potassium fertilizer utilizing seawater and coconut coir as sustainable and economical alternatives to inorganic fertilizers. The research aimed to investigate the effects of varying maceration times (4, 8, 12, 16, and 20 days) and coconut coir weights (10, 15, 20, 25, and 30 grams) on the characteristics of the resulting fertilizer, specifically its pH, Total Dissolved Solids (TDS), and K₂O content. The production process involved seawater collection and filtration, followed by coconut coir preparation (soaking, drying, size reduction, and weighing). Maceration was then performed using seawater and varied coconut coir weights over different time periods. The liquid fertilizer underwent pH, TDS, and K₂O analyses. Key findings indicate that pH decreased with increased coir weight and maceration time, ranging from 8.47 to 7.33, remaining safe for plants. TDS increased with longer maceration and higher coir amounts, reaching 6000 ppm after 20 days with 30 grams of coir, signifying enhanced dissolved compound extraction. The highest K₂O content of 0.132% was achieved at 16 days of maceration with 30 grams of coconut coir, indicating optimal potassium dissolution. This suggests that a combination of seawater and coconut coir can produce a liquid potassium fertilizer with promising characteristics, offering an eco-friendly and cost-effective agricultural solution.
Co-Authors Haris Z.A Irwan Irwan M Munawar Siti Rismariam