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Prihandini, Ghusrina
Jurusan Teknik Kimia, Politeknik Negeri Bandung
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Journal : FLUIDA

 1 
In Situ Katalitik Basa pada Proses Pembuatan Biodiesel dari Mikroalga Nannochloropsis sp Shoerya Shoelarta; Ghusrina Prihandini; Mariatha Martha; Rusdiyana Nur Putri Salimi; Fitria Yulistiani
Fluida Vol 15 No 2 (2022): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v15i2.4395

Abstract

Biodiesel merupakan salah satu bahan bakar alternatif yang dapat digunakan sebagai pengganti bahan bakar fosil. Mikroalga Nannochloropsis sp merupakan bahan baku terbarukan yang mampu menghasilkan lipid hingga 68% dan berpotensi untuk dijadikan bahan baku pembuatan biodiesel. Penelitian ini bertujuan untuk mengetahui pengaruh variasi konsentrasi katalis NaOH dan suhu yang digunakan terhadap biodiesel yang dihasilkan dari biomassa Nannochloropsis sp yang digunakan sebagai bahan baku, serta menguji densitas dan viskositas dari crude biodiesel yang dihasilkan. Metode yang digunakan dalam pembuatan biodiesel ini yaitu in situ transesterifikasi menggunakan katalis NaOH 1% dan 2%, pada temperatur 50 dan 60 , dan pada tekanan atmosfer. Hasil penelitian menunjukan bahwa penambahan konsentrasi katalis NaOH 2% meningkatkan yield crude biodiesel menjadi 71,03%, densitas dan viskositas crude biodiesel yang mendekati standar SNI adalah 833,75 kg/m3 dan 1,3579 cSt dengan kondisi operasi pada suhu 50oC dan konsentrasi katalis NaOH 2%.
Pengaruh Suhu Proses Sokletasi dan Volume Pelarut n-heksana terhadap Yield Minyak Atsiri Jeruk Lemon Fania Zulfa Salsabila; Rosyidah Khoirunnisa Mahdan; Ghusrina Prihandini; Robby Sudarman; Fitria Yulistiani
Fluida Vol 15 No 2 (2022): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v15i2.4409

Abstract

Essential oils are volatile compounds found in lemon peels. Essential oils are used in addition to soaps, perfumes, and candles because of their fresh aroma. Essential oils can be extracted using solid-liquid extraction. Soxhlet extraction was chosen because the process is continuous and requires less solvent than the percolation method. The solvent N-Hexane was chosen because its polar value was close to the polarity of the essential oil. Soxhlet extraction was carried out with variations in process temperature (70, 75, and 80°C) and solvent volume (16, 240, and 320ml). Previously, the lemon peel was pre-treated by drying (<100°C, 1 hour) and grinding. After extraction, the essential oil was added with anhydrous (Na2SO4). The best results were obtained at a process temperature of 80°C and a solvent volume of 320 ml yielding 3.25%. The increase in process temperature and solvent volume increases the yield of essential oils. Based on the results of the GC-MS analysis, lemon essential oil contains limonene (41.06%) and citral (12.2%). The content of limonene gives the aroma, and the content of citral gives color to the lemon essential oil. Abstrak Minyak atsiri merupakan senyawa volatile yang banyak ditemukan pada kulit jeruk lemon. Minyak atsiri digunakan sebagai tambahan sabun, parfum, dan lilin karena aromanya yang segar. Minyak atsiri dapat diambil menggunakan ekstraksi padat-cair. Ekstraksi sokletasi dipilih karena prosesnya kontinyu dan membutuhkan lebih sedikit pelarut dibandingkan metode perkolasi. Pelarut N-Heksana dipilih karena nilai polarnya mendekati kepolaran minyak atsiri. Ekstraksi sokletasi dilakukan dengan variasi suhu proses (70, 75, dan 80°C) dan volume pelarut (160, 240, dan 320ml). Sebelumnya dilakukan pre-treatment pada kulit jeruk lemon berupa pengeringan (<100°C, 1jam) dan penghalusan. Setelah diekstraksi, minyak atsiri diberi tambahan anhidrat (Na2SO4). Hasil terbaik diperoleh pada suhu proses 80°C dan volume pelarut 320 ml dengan hasil yield 3,25%. Peningkatan suhu proses dan volume pelarut meningkatkan yield minyak atsiri. Berdasarkan hasil analisis GC-MS minyak atsiri jeruk lemon mengandung limonene (41,06%), dan citral (12,2%). Kandungan limonene memberikan aroma dan kandungan citral memberikan warna pada minyak atsiri jeruk lemon.
Optimization of Pectin Extraction from Kepok Banana Peel (Musa Acuminata Balbisiana Colla) Using Natural Deep Eutectic Solvent (NADES) Fauzan, Ahmad; Prihandini, Ghusrina; Yudha W N, Angga; Sihaloho, Rivan
Fluida Vol. 16 No. 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4055

Abstract

Kepok banana peel is an abundant waste used as the main ingredient in pectin extraction. The pectin contained in Kepok bananas is known to be at a fairly high level compared to other types of bananas. This study aimed to determine the water content, methoxyl content, equivalent weight, galacturonic acid, and pectin yield in the pectin extraction process using the NADESS solvent extraction method at various NADESs C molar ratios (1:4; 1:7; 1:20). ), and extraction temperature (80oC, 90oC, 100oC). based on the results obtained, the best extract located at a ratio of 1:4 with a temperature of 90oC, with a moisture content of 99.8%, methoxyl content of 2.79%, yield of pectin of 5.81%, an equivalent weight is 5333.33, and the galacturonic acid content is 75.56%. While the test results show that the concentration of the given K: G solution affects the amount of pectin yield obtained in this extraction process.
Co-Authors Ahmad Fauzan Bambang Soeswanto Edi Wahyuni, Ninik Lintang Endang Widyastuti Fania Zulfa Salsabila Firmansyah, Taufik Akbar Ibrahim, Puji Astuti Mariatha Martha Marlina, Ari Muhammad Tri Sinarta Paqih Purnama Alam Pratama, Dhewangga Pratama, Yusuf Qobus, Muhammad Fauzy Ramadhana Rahmawati, Ranti Robby Sudarman Rosyidah Khoirunnisa Mahdan Rusdiyana Nur Putri Salimi Shoelarta, Shoerya Sihaloho, Rivan Sinarta, Muhammad Tri Wahyuni, Ninik Lintang Edi Widyabudiningsih, Dewi Yudha W N, Angga Yulistiani, Fitria