Abstract
In this work, the binary interaction parameters of vapor-liquid equilibrium for the mixtures of primary alcohols (methanol, ethanol, 1-propanol or 1-butanol) with C5 alcohols were obtained. A total of 15 systems that consisted of isobaric vapor-liquid equilibrium data at atmospheric pressure were selected. The binary interaction parameters were determined as temperature function by correlating the selected vapor-liquid equilibrium data using the Wilson, Non-Random Two-Liquid (NRTL) and Universal Quasi-Chemical (UNIQUAC) activity coefficient models. The binary interaction parameters were described as the temperature-dependent to increase the capability of the parameters for the application in wide range of temperature. The correlation showed good results because the root mean square deviation (RMSD) between the calculation values and experimental data were relatively low. The obtained parameters were very useful for optimizing the distillation column in the bio-ethanol purification process.
Highlights
In this work, the binary interaction parameters of vapor-liquid equilibrium for the mixtures of primary alcohols with C5 alcohols were obtained
The binary interaction parameters were determined as temperature function
The binary interaction parameters were described as the temperature-dependent to increase the capability of the parameters
Summary
Sejarah Artikel: Diterima Oktober 2016 Disetujui November 2016 Dipublikasikan Desember 2016. Keywords : Bioetanol, desain, kesetimbangan uapcair, parameter interaksi biner, pemurnian. Parameter interaksi biner kesetimbangan uap-cair campuran alkohol primer (metanol, etanol, 1-propanol atau 1-butanol) dengan alkohol rantai C5 telah ditentukan. Total 15 sistem yang terdiri dari kesetimbangan uap-cair kondisi isobarik pada tekanan atmosfer telah dipilih. Parameter interaksi biner di-tentukan sebagai fungsi suhu dengan mengkorelasikan data kesetimbangan uap-cair yang dipilih tersebut menggunakan model koefisien aktifitas Wilson, Non-Random Two-Liquid (NRTL), dan Universal QuasiChemical (UNIQUAC). Parameter interaksi biner dideskripsikan sebagai fungsi suhu untuk meningkatkan kemampuan parameter tersebut dalam aplikasi pada kisaran suhu yang panjang. Korelasi menunjukkan hasil yang baik dikarenakan root mean square deviation (RMSD) antara hasil perhitungan dan data eksperimental relatif kecil. Parameter yang diperoleh sangat berguna untuk optimasi kolom distilasi dalam proses pemurnian bioetanol
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