Hidrodinamika Reaktor Kolom Gelembung dengan Isian Unggun pada Prorses Penyerapan Gas CO2 Oleh Larutan NaOH
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Abstract
Penelitian ini bertujuan merancang dan menguji sebuah reaktor kolom gelembung. Reaktor kolom gelembung yang dirancang diharapkan dapat digunakan untuk mereaksikan reaktan multi-fasa. Reaktor yang telah dirancang diuji dengan sistem reaksi antara gas CO2 dan larutan NaOH. Reaktor dioperasikan pada kondisi tekanan atmosferik. Pengaruh beberapa variabel seperti kecepatan gas superfisial, konsentrasi NaOH dan unggun isian telah diujikan terhadap kinerja reaktor kolom gelembung. Kecepatan gas superfisial bervariasi dari 2,75.10-3 hingga 3,46.10-3 m/s dan konsentrasi natrium hidroksida bervariasi 0,5 M dan 1 M. Reaktor kolom gelembung dievaluasi tanpa dan dengan unggun di dalam reaktor. Parameter kinerja reaktor kolom gelembung yang digunakan adalah gas holdup dan konstanta laju reaksi. Gas holdup untuk reaktor dengan isian unggun lebih kecil 3 sampai 5 kali dibandingkan dengan kolom tanpa isian unggun. Sedangkan laju reaksi meningkat dengan adanya penambahan unggun ke dalam kolom. Peningkatan kecepatan gas superficial dapat meningkatkan nilai gas holdup dan laju reaksi. Konsentrasi reaktan natrium hidroksida juga memberikan pengaruh positif terhadap gas holdup dan laju reaksi.
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