PENGOLAHAN SERBUK LIMBAH BESI MENJADI BESI (III):  TINJAUAN KINETIKA MODEL QUASI STEADY STATE

Andi Aladin; Takdir Syarif; Lastri Wiyani; Rismawati Rasyid

doi:10.14710/reaktor.13.2.74-80

DOI: https://doi.org/10.14710/reaktor.13.2.74-80

PENGOLAHAN SERBUK LIMBAH BESI MENJADI BESI (III): TINJAUAN KINETIKA MODEL QUASI STEADY STATE

*Andi Aladin - Jurusan Teknik Kimia FTI-UMI Makassar, Indonesia

Takdir Syarif - Jurusan Teknik Kimia FTI-UMI Makassar, Indonesia

Lastri Wiyani - Jurusan Teknik Kimia FTI-UMI Makassar, Indonesia

Rismawati Rasyid - Jurusan Teknik Kimia FTI-UMI Makassar, Indonesia

Published: 11 Dec 2010.

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Abstract

Telah dilakukan penelitian pengolahan (oksidasi) limbah serbuk besi menjadi besi (II) dan besi (III) menggunakan katalis MnO₂. Dipelajari beberapa variabel reaksi yaitu waktu, laju alir udara, suhu, dan massa katalis. Proses oksidasi berlangsung dalam reaktor batch labu leher tiga dilengkapi kompressor sebagai pembangkit udara (oksigen) dan kondensor sebagai pendingin balik. Analisis hasil reaksi menggunakan metode titrasi dengan larutan KMnO₄. Dicari regim yang menentukan kecepatan reaksi dan dirumuskan persamaan laju reaksi berdasarkan pendekatan model quasi steady state. Disimpulkan bahwa dalam proses oksidasi fero sulfat menjadi feri sulfat menggunakan katalis murni MnO₂dapat didekati cukup baik dengan model quasi steady state (SSE 0,5.10^-4). Pada proses tersebut laju oksidasi dikendalikan oleh reaksi kimia, dengan persamaan . Penggunaan katalis MnO₂ dalam oksidasi cukup efektif, dapat menghasilkan konversi maksimum 97% dengan waktu reaksi, temperatur, kecepatan pengadukan dan massa (rasio) katalis optimum berturut-turut 90 menit, 90^oC, 400 rpm dan 0,3.

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Keywords: feri, fero, katalis MnO2, limbah besi, model quasi steady state

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Section: Research Article

Language : EN

In Volume 13, Nomor 2, Desember 2010

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