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All Journal Majalah Forum Teknik UGM Reaktor International Journal of Renewable Energy Development Jurnal Teknik ITS IPTEK The Journal of Engineering IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Jurnal Teknik Kimia Eksergi: Chemical Engineering Journal Seminar Nasional Teknik Kimia Kejuangan Journal of Research and Technology Indonesian Journal of Chemistry Jurnal Purifikasi CHEESA: Chemical Engineering Research Articles JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) ASEAN Journal of Chemical Engineering Jurnal Teknik Kimia Indonesia Jurnal Pengabdian dan Peningkatan Mutu Masyarakat (JANAYU) Indonesian Community Journal Sewagati Petrogas : Journal of Energy and Technology International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis Journal of Fundamentals and Applications of Chemical Engineering LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI JURNAL REKAYASA KIMIA & LINGKUNGAN
Ali Altway
Chemical Engineering Department, Institute Technology Of Sepuluh Nopember, Surabaya,
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Other

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Journal : iptek the journal of engineering

 1 
Tin Extraction from Slags Used Hydrochloric Acid Nonot Soewarno; Ali Altway; Susianto Susianto; Fadlilatul Taufany; Siti Nurkamidah
IPTEK The Journal of Engineering Vol 1, No 1 (2014)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v1i1.a438

Abstract

Slag is a mixture of mineral in tin sand or by product in the smelting process. By using separation process, tin can be separated from other minerals in slag. Extraction process with a solvent is usually used to separate tin from other minerals. Furthermore, solution that still contains many dissolved compounds is adsorbed by activated carbon and desorption back with NaOH solution. This study only focuses on the extraction process to obtain a stannate chloride solution with extraction temperature, solvent concentration, extraction time, and liquid/solid ratio as variables. Hydrochloric acid (HCl) has been used as solvent in this study. The concentration of tin in the extracts of each variable was analyzed to determine the percentage of recovery of tin and the optimum operating conditions in the recovery process of tin from waste slag. Experiment results show that the percentage of recovery increases with the increasing of extraction temperature and solvent concentration The highest recovery is 61.5% which is obtained when the extraction temperature is 80 ºC, concentration of HCl is 10 wt%, with a HCl solution and slag ratio is 7: 1 and extraction time is about 30 minutes.
Prediction of Gas-Liquid Equilibria of CO2-K2CO3-MDEA-H2O System by Electrolyte UNIQUAC Model saidah altway; Kuswandi Kuswandi; Ali Altway
IPTEK The Journal of Engineering Vol 1, No 1 (2014)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v1i1.a437

Abstract

Carbon dioxide is an acid gas that can be harmful impurity especially in the chemical industry. Various processes have been developed to reduce the CO2 from the gas stream. Chemical absorption is the most economical method for CO2 separation. One of the processes that is widely used in industries is Benfield process with K2CO3 (potassium carbonate) as a solvent and amine as a promotor. In this study, MDEA (Methyldiethanolamine) is used as a promotor. As a reference for designing CO2 absorption/stripping packed column in industries, gas-liquid equilibrium data were required. The objective of this study is to predict the gas-liquid equilibria of CO2-K2CO3-MDEA-H2O system at 30oC and atmospheric pressure with 30% K2CO3 and variation of weight percent of MDEA 2, 5, 8, and 10%. The model used in this study is an electrolyte UNIQUAC. The simulation was conducted using Matlab programming. The deviation of predicted CO2 partial pressure with the experimental data is 14.85%. The energy interaction parameters of electrolyte UNIQUAC model were obtained from fitting with the experimental data by Least Square method. The results of this study represented that with increasing CO2 partial pressure, CO2 loading increased, and also at the same partial pressure of CO2, CO2 loading increased with the increase of weight percent of MDEA
Performance Test Membrane Contactor for CO2 Desorption from DEA Yeni Rahmawati; Salasa Ariq Sungkono; Zulfahmi Hawali; Fadlilatul Taufany; Susianto Susianto; Siti Nurkhamidah; Ali Altway
IPTEK The Journal of Engineering Vol 9, No 1 (2023)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v9i1.a16642

Abstract

Membrane-based desorption of carbon dioxide (CO2) using a membrane contactor is considered a novel process for separating CO2 from solvents. It can be carried out using temperature regeneration, sweep gas, and vacuum method. In this work, the vacuum regeneration method is applied in the CO2 desorption process from 30% wt of diethanolamine (DEA) solution. This study investigates the effect of operating parameters such as liquid flowrate, vacuum pressure, and CO2 loading on the mass transfer rate and desorption efficiency of CO2. The highest mass transfer rate of 2.2013 × 10-7 mol/m2s is achieved at a liquid flowrate of 500 mL/min, CO2 loading of 0.27 mol CO2/mol DEA, and vacuum pressure of 50 cmHg while the maximum desorption efficiency of 71.45% is achieved at lower liquid flowrate of 100 mL/min, CO2 loading of 0.27 mol CO2/mol DEA, and vacuum pressure of 50 cmHg. The result demonstrates that membrane contactor is a promising method for the CO2 desorption process which requires further investigation. 
Co-Authors Abubakar Tuhuloula Achmad Dwitama Karisma Achmad Roesyadi Adi Soeprijanto Aditya Akhmad Sony Afan Hamzah, Afan Afri Dwijatmiko Agung Ari Wibowo Agus Surono Agustiani, Elly Aisyah Alifatul Altway, Saidah Anggraheny, Nurul Annasit Annasit Antonius, Kevin Ardiani, Liana Arifin, Rizal Aris Tjahyanto Atha Pahlevi Atletiko, Faizal Johan Aulia, Anisa Fatma Ayu Larasati Azaim, Ahmad Hayiz Azka Afuza Bayu Yusuf Bekti, Andi Setyo Budhikarjono, Kuswandi Kusno Dahnum, Deliana Danawati Hari Prajitno Dewi Istiyanie Dwi Arimbi Wardaningrum Eldira Nindri Wena Endah Prasetyo Rini Eriska Wahyu Kusuma Erlinda Ningsih, Erlinda Fadlilatul Taufany Fadlilatul Taufany Fahmi Fauziah, Melinda Nur Firsta Hardiyanto Gianfranco, Enrique Gissa Navira Sevie Hafid, Abdul Haqqyana Haqqyana Harahap, A. H. Hendi Riesta Mulya Honora, Faradiba Istiyanie, Dewi Istiyanie, Dewi Juwari Juwari K Kusnaryo K Kuswandi Karnila Willard Koatlely Serpara Kusnarjo Kusnarjo Kuswandi Kuswandi Kuswandi Kuswandi Kuswandi Kuswandi Lailatul Qadariyah Lailatul Qomariyah, Lailatul Lamhotmatua, Thasya Larasati, Wahyu Adinda Lily Pudjiastuti, Lily Ling Ling M Rachimoellah M Rachimoellah Mahfud Mahfud Mahfud Mahfud Margono Margono Medya Ayunda Fitri Merisa Veronika Suparto Meydita, A. D. Mochamad Sidiq Muhammad Anshorulloh Mukhlish Muhammad Fadlan Minallah Muhammad Iqbal Musfil AS Nabila Farras Balqis Nadhifa Auria Andini Niniek Fajar Puspita, Niniek Fajar Nonot Soewarno Nora Amelia Novitrie Nora Amelia Novitrie Novitrie, Nora Amelia Nugroho, Muhammad Aldi Nuniek Hendrianie Nuniek Hendrianie Nur Aini Nadhifah Nur Ihda Farihatin Nisa Nur Ihda Farikhatin Nisa Nurkhamidah, Siti Nurlaili Humaidah, Nurlaili Palupi, A. E. Pambudi, Alfian Wisnu Pamungkas, Raditya Pamungkas, Raditya Yudhi Pradnya Paramitha, Pradnya Prapti Ira Kumala Sari Prida Novarita Trisanti, Prida Novarita Putri, Rheyna Casca Hanafi R. Darmawan Darmawan Rachmaniah, Orchidea Ragilia Rahma Maulidia Raja, Risfanali Ramadhani, Farah Amirah Firyal Renanto Handogo Rendra Panca Anugraha Rohmah, Nur Azizatur Rohmah, Nur Azizatur Rohmania, Inti Ruben Leonardo Panjaitan S, Susianto Salasa Ariq Sungkono Samuel Sembiring Siti Machmudah Siti Nurchamidah Siti Nurkamidah Siti Nurkhamidah Siti Zullaikah Sri Rachmania Juliastuti Sugeng Winardi Sugianto, Mohamad Sugiarto, Kurniawan Wahyu Suhadi Suhadi Suhadi Suhadi Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Surya Rachmadani Susianto Susianto S Susianto Susianto Susianto Susianto Susianto, Susianto Syukharial, Muhammad Alraedi Tantular Nurtono Taufany, Fadlilatul Tetrisyanda, Rizky Tri Widjaja Tri Widjaja Trisna Kumala Dhaniswara W Widiyastuti Wahyu Adinda Larasati Wahyu Meka Warlinda Eka Triastuti Widasgantri, Treisnaning Widiyastuti Winardi, S. Winardi, Sugeng Wulansari, Dessy Yeni Rahmawati Yeni Rahmawati, Yeni Yosita Dyah Anindita Yunita D Indrasari Zuchrillah, Daril Ridho Zulfahmi Hawali