Kinetika Reaksi Esterifikasi Minyak Biji Kapuk  Pada Pembuatan Biodiesel

Salamah, Siti

doi:10.26555/chemica.v1i1.501

Cited by 3 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Sedangkan pada suhu di atas 30,10°C dan waktu reaksi di atas 2 jam terjadi penurunan produk secara signifikan. Hal ini disebabkan karena semakin tinggi suhu, laju pergerakan setiap molekul akan semakin cepat, sehingga frekuensi tumbukan antar molekul akan meningkat dan reaksi menjadi semakin cepat [23]. Namun penambahan suhu harus disesuaikan dengan keadaan reaksi dan jenis reaktan.…”

Section: Interaksi Antar Variabel Aunclassified

Optimasi Sintesis Asam Lemak Etanolamida Berbasis Minyak Ketapang Menggunakan Response Surface Methodology

2021

View full text Add to dashboard Cite

Telah dilakukan optimasi sintesis asam lemak etanolamida berbasis minyak ketapang (Terminalia catappa L) menggunakan Response Surface Methodology (RSM). Asam lemak etanolamida adalah surfaktan yang banyak dibutuhkan pada industri farmasi. Sintesis asam lemak etanolamida dilakukan dengan mereaksikan minyak ketapang dan etanolamina sebagai substrat menggunakan katalis Lipozyme TL.IM. Penelitian ini bertujuan untuk mengamati interaksi antar variabel yang dapat mempengaruhi kondisi optimum dan hasil reaksi. Beberapa variabel yang dimaksud yaitu waktu reaksi, suhu reaksi, molar rasio substrat dan jumlah enzim. Metode RSM yang digunakan terdapat dalam perangkat lunak Design Expert v.7. Hasil penelitian menunjukkan model untuk mendapatkan kondisi yang optimal adalah model quadratic (p-value 0.0048/signifikan), lack of fit (p-value 0.3827 /non signifikan) dan nilai R-squared sebesar 0,7953. Kondisi optimum yang dihasilkan yaitu waktu reaksi 1,50 jam, suhu reaksi 38,10 °C, molar ratio minyak : etanolamina (1 : 20,52) gram/mol dan jumlah enzim 0.16 gram dengan prediksi dan aktual persen hasil asam lemak etanolamida secara berturut-turut sebesar 60,02 dan 64,00 %.

show abstract

Section: Interaksi Antar Variabel Aunclassified

Optimasi Sintesis Asam Lemak Etanolamida Berbasis Minyak Ketapang Menggunakan Response Surface Methodology

2021

View full text Add to dashboard Cite

show abstract

“…However, it stops at the optimum time is achieved. The reaction time is increased to make the substrate back and drive the reaction to the left and reduces the conversion results because the reaction is reversible [20].…”

Section: Interaction Of Reaction Time and Enzyme Amountmentioning

confidence: 99%

Methyl Linoleate Synthesis From Cotton Seeds Oil : Optimization Study

et al. 2020

View full text Add to dashboard Cite

Methyl esters are derivatives of triglycerides (oils or fats) that can be produced through esterification and transesterification process. One example of the methyl esters are widely used as an industrial raw material is methyl linoleate. Methyl linoleate is a colorless liquid with molecular formula C19H34O2. Methyl linoleate is a fatty acid ester and has a lot of common use as biodiesel ingredient, textiles, in medical research, emulsifiers and lubricants. The raw materials commonly used for the synthesis of methyl esters are palm oil, coconut oil, soybean oil, and others. But these oils are edible oil materials, so that in this case the raw materials that will be used is the cotton seed that has not been exploited well. The optimization reaction of the methyl linoleate synthesis through enzymatic transesterification from cotton (Ceiba pentandra L.) seed oils and methanol by Response Surface Methodology (RSM) was carried out. Immobilized lipase (lipozymeTL IM) used as catalyst. This research aims to optimize the reaction by observing variety of conditions that are influenced by several variables, such asreaction time, molar ratio, the amount of enzyme and the reaction temperature. Design Expert v.7 software used to view the interaction between the variables via RSM. The mathematical equations and statistical methods showed that the optimum condition of the enzymatic transesterification was obtained at 0.15 gram of amount of the enzyme, the ratio of cotton seed oils: methanol of 1: 2.05 (g/g), a reaction time of 14 hours and a temperature of 49.95 oC with the predicted and actual percentages yield of 37.87 and 38.24%, respectively. The model recommended for obtaining optimum results is a quadratric model with a R-squared value of 0.6957. Keywords: Methyl linoleate, Cotton seed oils, Lipozyme, Optimization study, Design Expertv.7

show abstract