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All Journal JURNAL TEKNOLOGI LINGKUNGAN JTERA (Jurnal Teknologi Rekayasa) Majalah Ilmiah Pengkajian Industri
Pertiwi, Astri
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Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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Journal : Majalah Ilmiah Pengkajian Industri

 1 
EVALUASI PLT BIOGAS TERANTAM COVERED LAGOON (CAL) 700 KW UNTUK PENGEMBANGAN PLT BIOGAS TIPE CSTR Rosyadi, Erlan; Rahmawati, Nurdiah; Pertiwi, Astri; Murti, Galuh Wirama; Fauzan, Naazi; Rini, Tyas Puspita; Muharto, Bambang; Bhaskara, Arya; Saputra, Hens
Majalah Ilmiah Pengkajian Industri Vol 13, No 3 (2019): Majalah Ilmiah Pengkajian Industri
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (772.901 KB) | DOI: 10.29122/mipi.v13i3.3844

Abstract

Production of Crude Palm Oil (CPO) is increasing from year to year and is predicted to reach 41.6 million tons per year in 2018. Each ton of CPO will produce 3,28 m3 of POME during the production process. Improper handling of POME, besides causing soil pollution and flying, will release methane gas that categorized as GHG. BPPT cooperate  with PTPN V utilized POME to produce biogas and then be converted into electricity in a Biogas Power Plant (PLTBg) in Terantam with a design capacity of 700 kW. The reactor used is a closed Anaerobic Lagoon (CAL) reactor equipped with a recirculation pump. From the evaluations, the technology chosen was not optimal from the operation, its evaluaed from the accumulation of cakes and sludge collected in the reactor which could be disturb during an anaerobic reaction. The next technology development will be carried out with the development of PLTBg in Sei Pagar using CSTR technology. At the same reactor capacity, CSTR has a faster HRT compared to CAL. CSTR is also easier in control of pH and temperature, also requires less land.Keyword : POME, Biogas, CSTR, Covered Lagoon, HRT, OLR
APPLICATION OF TEMPERATURE CONTROL SYSTEMS AT THE CATALYST ACTIVATION STEP IN THE METHANOL TESTPLANT Adiprabowo, Arya Bhaskara; Pertiwi, Astri; Rahmawati, Nurdiah; Saputro, Frendy Rian; Valentino, Novio; Anindita, Hana Nabila; Septriana, Desy
Majalah Ilmiah Pengkajian Industri Vol. 15 No. 1 (2021): Majalah Ilmiah Pengkajian Industri
Publisher : Deputi TIRBR-BPPT

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Abstract

Catalyst activation is an important step in methanol synthesis process, achieved by the reduction of CuO precursor producing Cu0 active sites.  Testplant’s temperature operation shall be maintainted at 220°C in order to maximize the CuO reduction process in the catalyst activation step. A temperature control system shall be applied in methanol testplant to maintain the temperature during reduction process, due to sensitivity of reduction process to temperature variation and possibility of disturbance such as change in gas flow rate which could affects the operating temperature. Temperature control systems are tested by using step response at the desired setpoint, which is 220°C at pre-heater and reactor and 60°C at sampling line. The tests are conducted by changing the setpoint value at temperature controller and previously stable flow gas in the system (disturbance rejection). The temperature control system proved to be able to response well during the test. In the end, methanol is produced from syngas, indicating catalyst activation success. Keywords: Catalyst Activation; Methanol Testplant; Temperature Controller
Co-Authors Adiprabowo, Arya Bhaskara Bhaskara, Arya Dwimansyah, Ridho Fauzan, Naazi Hana Nabila Anindita, Hana Nabila Hens Saputra Juwita, Asmi Rima Masfuri, Imron Muharto, Bambang Murti, Galuh Wirama Prasetyo, Dwi Husodo Priambodo, Trisaksono Bagus Rahmawati, Nurdiah Rini, Tyas Puspita Rosyadi, Erlan Saputro, Frendy Rian Semuel Pati Senda Septriana, Desy Soleh, Soleh Valentino, Novio