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All Journal Reaktor International Journal of Renewable Energy Development METANA Jurnal Teknik ITS IPTEK Journal of Proceedings Series BERKALA SAINSTEK Jurnal Teknik Kimia Bulletin of Chemical Reaction Engineering & Catalysis Seminar Nasional Teknik Kimia Kejuangan The Journal of Pure and Applied Chemistry Research Journal of Engineering and Technological Sciences Indonesian Journal of Chemistry Communications in Science and Technology Prosiding Seminar Nasional Sains dan Teknologi Terapan Sewagati Bulletin of Chemical Reaction Engineering & Catalysis
Achmad Roesyadi
Chemical Engineering Department, Industrial Technology Faculty, Sepuluh Nopember Institute
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Journal : Journal of Engineering and Technological Sciences

 1 
The Power Consumption Performance of an Orbiting Screw Solid-Solid Mixer Senda, Semuel Pati; Renanto, Renanto; Roesyadi, Achmad; Sumaryono, Wahono; Bindar, Yazid
Journal of Engineering and Technological Sciences Vol 44, No 3 (2012)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (564.15 KB) | DOI: 10.5614/itbj.eng.sci.2012.44.3.6

Abstract

In this work we have investigated mixing in a modified orbiting screw mixer  (MOSM)  designed  for  solid-solid mixing.  Mixing  was  carried  out  using urea powder and natural zeolite powder (UZ) of three varying particle sizes (50-60, 60-80 and 80 mesh). Power consumption was calculated from the measured torque of orbit and screw, obtained from computerized records. It was found that the  mixing  process  in  the  modified  orbiting  screw  mixer  with  air  injection required a lower power consumption for each particle-size group when compared to mixing without air injection. With UZ mixing in MOSM with  air injection, the lowest E was obtained for  the 60-80 mesh particle-size group  (4,297 Joule/kg-1),whereas when mixing without  air injection, the value was  10,296 J/kg. The best mixing  operation in this experiment was achieved at NFr  =  1.18x10-3 and in the range  of  values  NRe≈  8.77x107 to  2.63x108.  Moreover,  in this  study,  we  have developed  an  equation  to  estimate the  power  consumption required  for  mixing and determined its correlation with dimensionless numbers.
Kinetics of Palm Oil Transesterification Using Double Promoted Catalyst CaO/KI/γ- Al2O3 Asri, Nyoman Puspa; Budikarjono, Kusno; Suprapto, Suprapto; Roesyadi, Achmad
Journal of Engineering and Technological Sciences Vol 47, No 4 (2015)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (192.867 KB) | DOI: 10.5614/j.eng.technol.sci.2015.47.4.1

Abstract

Double promoted catalyst (CaO/KI/γ-Al2O3) was used as the catalyst for transesterification of palm oil into biodiesel. The experiment was carried out in a batch reactor consisting  of a three-neck glass flask (500 ml capacity) equipped with a reflux condenser, thermometer and magnetic stirrer. Kinetic study was  carried out with methanol under reflux conditions  at different temperatures (35-75°C) and different times of reaction (1-7 hours). The effects of temperature and time of the reaction on the conversion of palm oil into biodiesel and reaction rate constants were investigated. The results showed that the conversion and rate constants of reaction increased with the increasing of the reaction temperature. The highest conversion of 97% was obtained at 65°C and 5 hours  of reaction time. Meanwhile, the activation energy and the frequency factor were 15.47 kJ/mol and 1.22.102, respectively.
The Power Consumption Performance of an Orbiting Screw Solid-Solid Mixer Semuel Pati Senda; Renanto Renanto; Achmad Roesyadi; Wahono Sumaryono; Yazid Bindar
Journal of Engineering and Technological Sciences Vol. 44 No. 3 (2012)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.eng.sci.2012.44.3.6

Abstract

In this work we have investigated mixing in a modified orbiting screw mixer  (MOSM)  designed  for  solid-solid mixing.  Mixing  was  carried  out  using urea powder and natural zeolite powder (UZ) of three varying particle sizes (50-60, 60-80 and 80 mesh). Power consumption was calculated from the measured torque of orbit and screw, obtained from computerized records. It was found that the  mixing  process  in  the  modified  orbiting  screw  mixer  with  air  injection required a lower power consumption for each particle-size group when compared to mixing without air injection. With UZ mixing in MOSM with  air injection, the lowest E was obtained for  the 60-80 mesh particle-size group  (4,297 Joule/kg-1),whereas when mixing without  air injection, the value was  10,296 J/kg. The best mixing  operation in this experiment was achieved at NFr  =  1.18x10-3 and in the range  of  values  NRe≈  8.77x107 to  2.63x108.  Moreover,  in this  study,  we  have developed  an  equation  to  estimate the  power  consumption required  for  mixing and determined its correlation with dimensionless numbers.
Kinetics of Palm Oil Transesterification Using Double Promoted Catalyst CaO/KI/γ- Al2O3 Nyoman Puspa Asri; Kusno Budikarjono; Suprapto Suprapto; Achmad Roesyadi
Journal of Engineering and Technological Sciences Vol. 47 No. 4 (2015)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2015.47.4.1

Abstract

Double promoted catalyst (CaO/KI/γ-Al2O3) was used as the catalyst for transesterification of palm oil into biodiesel. The experiment was carried out in a batch reactor consisting  of a three-neck glass flask (500 ml capacity) equipped with a reflux condenser, thermometer and magnetic stirrer. Kinetic study was  carried out with methanol under reflux conditions  at different temperatures (35-75°C) and different times of reaction (1-7 hours). The effects of temperature and time of the reaction on the conversion of palm oil into biodiesel and reaction rate constants were investigated. The results showed that the conversion and rate constants of reaction increased with the increasing of the reaction temperature. The highest conversion of 97% was obtained at 65°C and 5 hours  of reaction time. Meanwhile, the activation energy and the frequency factor were 15.47 kJ/mol and 1.22.102, respectively.
Co-Authors . Widayat A.A. Ketut Agung Cahyawan W Abdul Aziz Adrianto Prihartantyo Agus Budianto Aini, Afrida Nur Aini, Apsari Puspita Airlangga, Bramantyo Al-Muttaqii, Muhammad Ali Altway Anindita Pramesti Putri Nugroho Aparamarta, Hakun Wirawasista Arief Budiman Aushaf, Faishal Danawati Hari Prajitno Darmawan, Raden Delfimelinda Nurul Riyadi Desty Rusdiana Sari Devi, Fatma Putrinta Devita Dian.L Dini Fathmawati Dwi Fitriyanto Fatma Putrinta Devi Fika Anjana Fika Anjana Firman Kurniawansyah Firman Kurniawansyah H Hadiyanto H M Rachimoellah H Satriadi Hafshah Hafshah Hafshah Hafshah Hari Prajitno, Danawati Himawan TBM Petrus Himawan Tri Bayu Murti Petrus Ignatius Gunardi Izza Aliyatul Muna, Izza Aliyatul Jimmy Jimmy Kurniawansyah, Firman Kurniawansyah, Firman Kusno Budhikarjono Kusno Budikarjono Kusno Budikarjono Kusno Budikarjono Kusno Budikarjono Kusuma, Heri Septya Lailatul Qadariyah Lenny Marlinda M. Renardo Prathama Abidin Mahfud Mahfud Mahfud Mahfud Mahfud Mahfud Mahfud Mahfud Marbun, Maja Pranata Mitsuru Sasaki Motonobu Goto Motonobu Goto Muhammad Al Muttaqii Muhammad Al Muttaqii Muhammad Al-Muttaqii Muhammad Al-Muttaqii Muhammad Al-Muttaqii Muhammad Al-Muttaqii Muhammad Rachimoellah Niar Kurnia Julianti Nurjannah Nurjannah Nurjannah Nurjannah Nurkhamidah, Siti Nyoman Puspa Asri Oktarinda Damayanti Pamungkas, Gagas Rachmaniah, Orchidea Rahmaniah Malik Rahmaniah Malik Rahmi Ratna Ediati Renanto Handogo Ricco Aditya S. W Rismawati Rasyid Riyadi, Delfimelinda Nurul Riza Alviany S. Suprapto Santi Dyah Savitri Semuel Pati Senda Semuel Pati Senda Silvy Eka Andansari Siti Machmudah Siti Machmudah Siti Machmudah Siti Machmudah Siti Zullaikah Sri Rachmania Juliastuti, Sri Rachmania Sumarno . Suprapto Suprapto Tantri Kusuma Wardani Tantular Nurtono W. Wahyudiono Wahono Sumaryono Wahyudiono Wahyudiono Widi Astuti Widi Astuti Widiyastuti Widya Rosa Oktaviani Winardi, Sugeng Yazid Bindar Yazid Bindar Yeni Rahmawati, Yeni Yuanita Gustanti Yustia Wulandari Mirzayanti Zulnazri, Z