Pemisahan Campuran Pada Cyclohexane Dan Toluene Menggunakan Deep Eutectic Solvent (DES) Sebagai Entrainer Dengan Distilasi Ekstraktif

Lesmana, Athaya Callula Putri and Pratama, Muhammad Rizky Aly (2026) Pemisahan Campuran Pada Cyclohexane Dan Toluene Menggunakan Deep Eutectic Solvent (DES) Sebagai Entrainer Dengan Distilasi Ekstraktif. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada industri petrokimia, diperlukan adanya pemisahan campuran hidrokarbon kompleks yang menggabungkan senyawa aromatik dan non-aromatik (naphtanic) melalui proses catalytic reforming. Pemisahan perlu dilakukan agar produk dapat memenuhi spesifikasi kemurnian standar dan juga meminimalisir resiko stabilitas operasional dan efisiensi proses di industri. Beberapa metode seperti liquid–liquid extraction dan adsorpsi telah dikembangkan, namun metode tersebut memiliki keterbatasan berupa kebutuhan tahap pemulihan tambahan, konsumsi energi tinggi, selektivitas terbatas, serta kendala operasional. Oleh karena itu, distilasi ekstraktif dipilih karena mampu meningkatkan volatilitas relatif serta memungkinkan penggunaan entrainer non-volatil yang lebih ramah lingkungan. Proyek akhir ini menggunakan Deep Eutectic Solvent (DES) sebagai entrainer, yaitu choline chloride–Phenol (ChCl–Phenol) dengan variasi rasio molar 1:2,1:3, dan 1:4. Keunggulan DES sebagai entrainer meliputi material yang biodegradable, cost rendah, selektivitas tinggi, dan operasi mudah. Data kesetimbangan uap-cair (VLE) sistem biner cyclohexane-toluene pada tekanan 101,3 kPa telah didapatkan dan terbukti konsisten secara termodinamika berdasarkan uji L-W Wisniak. Data tersebut juga dapat dikorelasikan dengan baik dan didapatkan parameter interaksi biner model NRTL dengan AAPD T sebesar 0,55%, AAPD x sebesar 3,42%, dan AAPD y sebesar 4,19% dan model UNIQUAC dengan AAPD T sebesar 0,52%, AAPD x sebesar 3,33%, dan AAPD y sebesar 6,8%. Evaluasi penambahan entrainer menunjukkan efektivitas pemisahan yang signifikan, di mana DES ChCl-Phenol rasio 1:3 dan 1:4 mampu meningkatkan volatilitas relatif (α12) hingga 1,791 kali lipat dibandingkan sistem biner, jauh lebih unggul daripada phenol murni (1,26 kali). Berdasarkan simulasi desain kolom distilasi ekstraktif, DES ChCl-Phenol 1:3 ditetapkan sebagai entrainer paling optimal. Konfigurasi desain dengan 16 stages dan reflux ratio 6 menggunakan entrainer ini mampu mencapai kemurnian produk cyclohexane tertinggi hingga 99,8%.
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In the petrochemical industry, the separation of complex hydrocarbon mixtures consisting of aromatic and aliphatic non aromatic (naphtanic) compounds derived from catalytic reforming processes is essential. This separation is required to ensure that products meet standard purity specifications while minimizing risks to operational stability and process efficiency. Although methods such as liquid–liquid extraction and adsorption have been established, they possess inherent limitations, including the necessity for additional recovery stages, high energy consumption, limited selectivity, and various operational constraints. To address these challenges, extractive distillation is preferred due to its capability to enhance relative volatility and facilitate the use of environmentally friendly, non-volatile entrainers. This study utilizes Deep Eutectic Solvents (DES) as entrainers, specifically choline chloride–Phenol (ChCl–Phenol) with molar ratio variations of 1:2, 1:3, and 1:4. The primary advantages of DES as entrainers include their biodegradable nature, low cost, high selectivity, and ease of operation. Vapor-liquid equilibrium (VLE) data for the cyclohexane-toluene binary system at a pressure of 101.3 kPa have been obtained and were found to be thermodynamically consistent based on the Wisniak L-W test. These data also correlate well with the results, yielding binary interaction parameters for the NRTL model with AAPD T of 0.55%, AAPD x of 3.42%, and AAPD y of 4.19%, and for the UNIQUAC model with AAPD T of 0.52%, AAPD x of 3.33%, and AAPD y of 6.8%. Evaluation of entrainer addition showed significant separation effectiveness, where the ChCl-Phenol DES at ratios of 1:3 and 1:4 were able to increase the relative volatility (α12) by up to 1.791 times compared to the binary system, far superior to pure phenol (1.26 times). Based on the design simulation of the extractive distillation column, the 1:3 ChCl-Phenol DES was determined to be the most optimal entrainer. A design configuration with 16 stages and a reflux ratio of 6 using this entrainer was able to achieve the highest cyclohexane product purity of up to 99.8%.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Deep Eutectic Solvent, Distilasi Ekstraktif, Entrainer, NRTL, UNIQUAC ============================================================ Deep Eutectic Solvent, Entrainer, Extractive Distillation, NRTL, UNIQUAC
Subjects:	T Technology > TP Chemical technology > TP155.5 Chemical plants--Design and construction T Technology > TP Chemical technology > TP155.7 Chemical processes. T Technology > TP Chemical technology > TP156 Crystallization. Extraction (Chemistry). Fermentation. Distillation. Emulsions.
Divisions:	Faculty of Vocational > 24305-Industrial Chemical Engineering Technology
Depositing User:	Muhammad Rizky Aly Pratama
Date Deposited:	31 Jul 2026 00:51
Last Modified:	31 Jul 2026 00:51
URI:	http://repository.its.ac.id/id/eprint/140314

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