OPTIMASI PROSES PEMBUATAN METIL ESTER SULFONAT (MES) DARI MINYAK JARAK PAGAR (JATROPHA CURCAS L.) DAN PENGARUHNYA TERHADAP NILAI TEGANGAN ANTARMUKA MENGGUNAKAN METODE PERMUKAAN RESPON
ABSTRACT: The objectives of
this research were to obtain the optimum condition for processing of MES from
methyl ester of jatropha oil, and to characterize MES processed at its optimum condition. The experiment was designed in a factorial 24
with four free variables: temperatures of sulfphonation (X1) consisted of :
60oC, 80oC, 100oC, 120oC, and 140oC; the
length of sulfonation (X2) consisted of
: 1,5 hours, 3 hours, 4,5 hours, 6
hours, and 7,5 hours; methanol
concentrations (X3) consisted of : 10%,
20%, 30%, 40%, and 50%; purification
temperatures (X4) consist of : 30oC,
40oC, 50oC, 60oC, and 70oC. Data were
analysed using response surface methodology of Minitab 14 software.
The results showed that combination condition of the optimum treatment
for interfacial tension was achieved when the process was carried out at
temperature of sulphonation (X1) 102oC, time of sulphonation (X2) 3,9 hour,
methanol concentration (X3) 38%, and temperature of purification (X4) 50oC with
the IFT value stationer point at 3,418457 dyne/cm. MES from methyl ester of jatropha oil
processed at the optimum condition has the characteristics of absorbance value of 0,3 and emulsion stability of 45%.
Key words: surfactant, methyl ester sulphonate,
interfacial tension
Penulis: Sri Hidayati, A.
Sapta Zuidar, Ferdi Yanto
Kode Jurnal: jppertaniandd090043
