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All Journal Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Molekul: Jurnal Ilmiah Kimia
Safitri, Gita Nur
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Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Materials Science & Nanotechnology

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SWIMMING SPEED KAPIEK FISH (Barbodes schwanenfeldii) IN CURRENT TANK (FLUME TANK) USING CURRENT AND IN AQUARIUM WITHOUT CURRENT Safitri, Gita Nur; Nofrizal, Nofrizal; Syaifuddin, Syaifuddin
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 8, No 2 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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AbstractThis Research was conducted on 15-30 Mei 2021 in the Laboratory of Fishing Gear Materials of Faculty of Fisheries and Marine, University of Riau. The method that used in this research was experiment method in laboratory by testing directly to the samples, the number of the samples used were 30 fish with 9-12 cm overall body length (average of 9,00 cm) with standard deviation ± 0,6977 cm. The testing results show that the normal swimming speed of kapiek fish (sustained swimming speed)< 3,21FL/sec. Maximum sustained swimming speed is 3,21 FL/sec, Prolonged swimming speedof kapiek fish range from 3,21 – 11,66FL/sec, burst swimming speed11,66FL/sec. Swimming speed and swimming endurance of kapiek fish (Barbodes schwanenfeldii) has negative correlation with strong value (R2 = 0,3415). Based on the results it proves that the endurance of fish swimming will decrease at high swimming speeds, in otherwise if the swimming speed is high, the endurance of swimming will decrease.The swimming speed of fish in the flume tank is 14,82 FL/second while the swimming speed of fish in aquaerium is not up to 14 FL/second. So it shows that the swimming speed of fish in the aquarium is lower or below the flume tank.Key word : Swimming Speed, Swimming Endurance, Kapiek fish
A Comparative Evaluation of Solid-State Catalysts for Synthesis of Non-Ionic Surfactant Based Oleic Acid for Enhanced Oil Recovery (EOR) Sampora, Yulianti; Sofyan, Muhammad Ihsan; Ghozali, muhammad; Triwulandari, Evi; Restu, Witta Kartika; Ndruru, Sun Theo Constan Lotebulo; Devy, Yenni Apriliany; Handayani, Annisa Fitriyah; Safitri, Gita Nur; Satria, Erza Eka
Molekul Vol 20 No 1 (2025)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2025.20.1.11077

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Abstract. The Enhanced Oil Recovery (EOR) process with chemical techniques carried out by injecting chemicals such as surfactants, can be an alternative to increase oil production, especially in old oil wells. This study investigated the best formulation of non-ionic surfactants based on the mole ratio of oleic acid and PEG-400 as well as catalyst types such as KOH and p-TSA 1%, which are used in surfactant synthesis to be able to increase oil production. The tests carried out are the value of acid, saponification, ester, and iodine, FTIR, NMR as well as a test of compatibility, phase behavior, and IFT. The results showed that the best formulation of ester polyethylene glycol oleate with reaction temperature conditions of 130oC was at a mole ratio of 1: 4 using a 1% p-TSA catalyst with a value of acid is 3,61 mg KOH/g, saponification is 144,12 mg KOH/g, ester is 140,51 mg KOH/g and iodine is 76,70 g I2/100 g. The compatibility tests and phase behavior show that this surfactant can be developed in chemical EOR with an IFT value of 2,6 x 10-1 mN/m. Keywords: Enhanced oil recovery, oleic acid, solid-state catalysts, synthesis
Co-Authors Devy, Yenni Apriliany Evi Triwulandari Handayani, Annisa Fitriyah Heni Pujiastuti Muhammad Ghozali Ndruru, Sun Theo Constan Lotebulo Nofrizal Nofrizal Sampora, Yulianti Satria, Erza Eka Sofyan, Muhammad Ihsan Witta Kartika Restu