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Nurjannah, Nikmah
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Chemistry

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Optimization of Biodiesel Synthesis Process from Waste Cooking Oil in a Phased Array Ultrasonic Reactor Using Response Surface Methode Priscilla, Tiara; Ardycha Yudha Ramadhani, Muhammad; Prayogo, Wempi; Nurjannah, Nikmah; Achmad Parmadi, Faris; Arifin, Zainal
Al-Kimia Vol 11 No 2 (2023): DESEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v11i2.41555

Abstract

The research aims to optimize the process of biodiesel synthesis from used cooking oil using Response Surface Methodology (RSM) in ultrasonic phased array reactor. Used cooking oil, as a potential waste source, has been identified as a sustainable alternative feedstock for biodiesel production. The use of ultrasonic phased array reactors is expected to improve conversion efficiency through cavitation to produce high yields and purity of biodiesel. RSM used to obtain the optimal combination of transesterification reaction conditions, including variables such as feedstock ratio, catalyst concentration, and reaction time. A quantity of methanol and NaOH was transesterified in a reactor that had been filled with used cooking oil. The results showed the yield of biodiesel was achieved at 90.3250% with an optimum mole ratio of 1:7.59 (oil to methanol), a catalytic concentration of NaOH 0.14% by weight of oil and a reaction time of 15 minutes. The oil/methanol ratio is the most important operating parameter based on the ANOVA test. Based on the physical properties of biodiesel on density, kinematic viscosity, flash point, carbon residue and based on the results of GC-MS testing the biodiesel produced is in accordance with SNI 7182:2015.
Sintesis Aluminium Formate-MOF dari Limbah Kaleng sebagai Material Penangkap Karbon Menggunakan Metode Solvotermal Parmadi, Faris Achmad; Nurjannah, Nikmah; Ramadhani, Muhammad Ardycha Yudha; Wulandari, Amalia; Anjasmoro; Arifin, Zainal
Al-Kimia Vol 12 No 2 (2024): DECEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v12i2.50747

Abstract

This research aims to synthesize and characterize aluminum formate-metal organic framework (ALF-MOF) from beverage can waste using solvothermal method. The solvothermal method was chosen due to its ability to produce materials with controlled structures and superior properties. This research also uses a Central Composite Design (CCD) experimental design to optimize the synthesis conditions. The ALF-MOF synthesis process was carried out by mixing Al(OH)3 powder obtained from the extraction of aluminum in beverage can waste and HCOOH in DMF. The mixture was stirred and heated in an autoclave reactor at Al/HCOOH mole ratios (1:3, 1:5, and 1:7) and reaction times (1, 2, and 3 hours). Furthermore, the products were characterized using FTIR, XRD, SEM, and BET. Based on the results, it is known that the optimum synthesis conditions were achieved at the Al/HCOOH mole ratio and reaction time of 1:3.729 and 2.874 hours, respectively, with an ALF-MOF yield value of 87.71%. Characterization results showed the presence of COO groups and Al-O-Al groups. The ALF-MOF product also has an average particle diameter of 23.57 nm with a %crystallinity of 51.30% and a surface area of 128.507 m2/gram.
Co-Authors Achmad Parmadi, Faris Anjasmoro Ardycha Yudha Ramadhani, Muhammad Parmadi, Faris Achmad Prayogo, Wempi Priscilla, Tiara Ramadhani, Muhammad Ardycha Yudha Wulandari, Amalia Zainal Arifin