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Takdir Syarif
Jurusan Teknik Kimia, Fakultas Teknologi Industri, Universitas Muslim Indonesia
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Journal : Reaktor

 1 
THE KINETICS OF CaO ASSISTED PATTUKKU CHARCOAL STEAM GASIFICATION Takdir Syarif; H Sulistyo; Wahyudi B Sediawan; B Budhijanto
Reaktor Volume 18 No. 1 March 2018
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (777.33 KB) | DOI: 10.14710/reaktor.18.1.16-21

Abstract

Abstract Coal is a solid fuel that can be converted into syngas through gasification process. To obtain optimum gasification process design and operation, in-depth understanding of the influential parameters is required. This study aims to investigate the effect of temperature on the gasification process and to obtain its kinetics parameters. The study was carried out in a tubular reactor equipped with a heater and a condenser. Steam was used as gasifying agent, while CaO was employed as a CO2 adsorbent. The charcoal from coal was subjected to gasification at temperatures of 600°C, 700°C, and 800°C. The ratio of charcoal and CaO was 1:1. The gasification process lasted for 60 minutes with gas sample was taken every 15 minutes for composition analysis. The results showed that a temperature increase of 100°C caused a proportional increase of conversion of about 75% higher. The value of activation energy (Ea) and exponential factor (ko) were 46.645kJ/mole and 328.3894/min, respectively. For mass transfer parameters, values of activation energy for surface diffusion (Es) and surface diffusivity factor (as) were 81.126 kJ/mole and 0.138/min, respectively. Keywords: gasification; mathematical model; Pattukku coal char; steam; Thin Reaction Zone Model
PENGOLAHAN SERBUK LIMBAH BESI MENJADI BESI (III): TINJAUAN KINETIKA MODEL QUASI STEADY STATE Andi Aladin; Takdir Syarif; Lastri Wiyani; Rismawati Rasyid
Reaktor Volume 13, Nomor 2, Desember 2010
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (280.769 KB) | DOI: 10.14710/reaktor.13.2.74-80

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 MnO2 dapat 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, 90oC, 400 rpm dan 0,3.
Co-Authors Andi Aladin Andi Artiningsih Andi Magefira Andi Suryanto Andiyan Yuwono Andrik Rosela Ardan Arman, Muh Asryanti, Asryanti B Budhijanto B, Srisitisugiastuti Badaruddin, Sabrianah Basri Modding Budhijanto, Budhijanto Budi Sediawan, Wahyudi Darnengsih, Darnengsih Efendy, Moh. Irsal Fachry Abda El Rahman Fakih Has, Nur Fauziah Nur Aisyah Fauziah Nur Aisyah, Fauziah Gusnawati Gusnawati, Gusnawati H Sulistyo Hamid, Syarwan Hary Sulistyo Hasan, Safrudin Islamiyati Jahada Haluti La Ifa Mohamad Yurid Sangadji Muh Arman Munira Munira, Munira Mustafa, Nurul Makka Mustafiah Mustafiah Muzdalifah Muzdalifah Nurafni Ridwan Rahmatullah, Resky Alqadri Ridwan, Nurafni Rifaldi Mirasati Rismawati Rasyid Rony, Zahara Tussoleha Sabara, Zakir Safrudin Hasan Safrudin Hasan Sangkala Sarto Sarto Setyawati Yani Sulistyo, Hary Suprihastuti Sri Rahayu Sya’ban, Andrik Rosela Syukrika Putri Wahyudi B Sediawan Wahyudi Budi Sediawan Zakir Sabara Zakir Sabara Zakiyah Darajat Zakiyah Darajat