PEMBUATAN BIODIESEL MINYAK JELANTAH MENGGUNAKAN BIOKATALIS EKSTRAK KASAR LIPASE DARI BIJI  KESAMBI (Schleichera oleosa L.)

Nenobahan, M A; Ledo, Mellisa E.S; Nitsae, Merpiseldin

doi:10.32938/slk.v3i1.1040

Cited by 2 publications

(2 citation statements)

References 1 publication

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“…The high result of the acid value from this study indicates that there are still free fatty acids contained in biodiesel. The higher the acid value, the higher the ability of biodiesel to corrode the engine [15].…”

Section: Analysis Of Avocado Seed Oil Biodieselmentioning

confidence: 99%

Synthesis of Biodiesel from Avocado Seed Waste Through Esterification and Transesterification Processes

Budiastuti,

Rahmawati,

Susanto

et al. 2023

fld

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The avocado seed is a food waste that contains vegetable oil. The amount of avocado seed waste is very abundant, but there is no optimal processing or utilization. Fossil fuels as an energy source can experience scarcity because these energy sources are non-renewable. This research has important implications in waste management and development of renewable energy sources. One type of renewable energy is biodiesel. Biodiesel is an environmentally friendly alternative fuel made from vegetable oil. The use of biodiesel as an alternative fuel has advantages including being easier to decompose in nature and reducing emissions when compared to diesel oil. One type of plant that can be used as raw material for making biodiesel is avocado. This study aims to utilize avocado seed waste as a raw material for biodiesel synthesis and to test its characteristics that have not been found in previous studies in the form of analysis of acid value, density, and oxidation stability. The method used in the synthesis of biodiesel was esterification and transesterification reactions using methanol solvent with a mole ratio of avocado seeds to methanol of 1:6 and the addition of H2SO4 catalyst as much as 0.5% of the weight of oil for the esterification process and the addition of NaOH catalyst as much as 1% of the weight of oil for the transesterification process. This study complements previous research on biodiesel from avocado seeds and compares the obtained biodiesel characteristics to the Indonesian National Standard (SNI) 04-7182:2015. The final results of this study were 34,61%, 0.98 mg-KOH/g, 977 kg/m3, and 318 minutes for biodiesel yield, acid value, density, and oxidation stability, respectively.

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Section: Analysis Of Avocado Seed Oil Biodieselmentioning

confidence: 99%

Synthesis of Biodiesel from Avocado Seed Waste Through Esterification and Transesterification Processes

Budiastuti,

Rahmawati,

Susanto

et al. 2023

fld

View full text Add to dashboard Cite

show abstract

“…Isoterm adsorpsi juga dapat menjelaskan mekanisme proses adsorpsi tersebut [9]. Parameter termodinamika adsorpsi dapat menjelaskan informasi mengenai energi internal, seperti perubahan entalpi, entropi, dan energi bebas Gibbs [10]. Parameter kinetika adsorpsi dapat memberikan informasi laju adsorpsi dan waktu kontak untuk mencapai kesetimbangan adsorpsi [11].…”

Section: Pendahuluanunclassified

ANALISIS PERILAKU ISOTERM, TERMODINAMIKA, DAN KINETIKA ADSORPSI STRONTIUM MENGGUNAKAN TiO2 – ZEOLIT LAMPUNG

Sholahudin,

Purwaningsih,

Noerpitasari

et al. 2023

urania

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Bahan bakar nuklir setelah digunakan di reaktor menghasilkan beberapa hasil fisi, dimana salah satunya adalah strontium (90Sr). Isotop strontium dapat dimanfaatkan menjadi bahan baku pembuatan baterai, tetapi strontium tersebut masih tercampur dengan hasil fisi atau isotop lainnya sehingga diperlukan proses pemisahan. Salah satu metode pemisahan strontium adalah dengan adsorpsi. Dalam penelitian ini, campuran TiO2-zeolit Lampung dievaluasi kinerjanya sebagai adsorben sehingga dapat digunakan untuk adsorpsi strontium. Zeolit Lampung awal diaktivasi menggunakan asam sulfat pekat untuk membersihkan pori-pori yang masih mengandung pengotor. Kemudian zeolit dicampurkan dengan TiO2 menggunakan metode stir casting. Adsorben TiO2-zeolit Lampung yang diperoleh kemudian dikarakterisasi menggunakan Fourier Transform Infrared (FTIR), X-Ray Diffraction Spectrometer (XRD), dan Scanning Electron Microscope (SEM). Setelah itu dilakukan uji adsorpsi dengan model isoterm, termodinamika, dan kinetika. Terbentuknya TiO2-zeolit yang dicirikan menggunakan spektroskopi FTIR ditunjukkan dengan adanya puncak serapan Ti-O-Si pada zeolit Lampung setelah ditambahkan TiO2. Hasil analisis menggunakan XRD memperlihatkan zeolit Lampung berjenis klinoptilolit dan mordenit, serta TiO2 yang digunakan memiliki fase anatase. Hasil analisis menggunakan SEM mengindikasikan TiO2 tersebar pada permukaan zeolit Lampung. Model isoterm adsorpsi untuk adsorben TiO2-zeolit memenuhi model isoterm Langmuir. Kajian termodinamika menunjukkan proses adsorpsi bersifat endoterm dan tidak spontan, dan kinetika adsorpsi strontium mengikuti orde kedua semu.Kata kunci: Isoterm, adsorpsi, strontium, TiO2, zeolit.

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PEMBUATAN BIODIESEL MINYAK JELANTAH MENGGUNAKAN BIOKATALIS EKSTRAK KASAR LIPASE DARI BIJI KESAMBI (Schleichera oleosa L.)

Cited by 2 publications

References 1 publication

Synthesis of Biodiesel from Avocado Seed Waste Through Esterification and Transesterification Processes

Synthesis of Biodiesel from Avocado Seed Waste Through Esterification and Transesterification Processes

ANALISIS PERILAKU ISOTERM, TERMODINAMIKA, DAN KINETIKA ADSORPSI STRONTIUM MENGGUNAKAN TiO2 – ZEOLIT LAMPUNG

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