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All Journal Majalah Ilmiah Pengkajian Industri Makara Journal of Science International Journal of Renewable Energy Development
Rini, Tyas Puspita
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Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Transportation

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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
Effect of Temperature and Steam-to-Carbon Monoxide (CO) Ratio on Hydrogen Production in Water-Gas Shift Reaction using Cu-ZnO-Al2O3 Catalyst Desi, Sekar Kumala; Nursa'adah, Restu Siti; Anindita, Hana Nabila; Muharto, Bambang; Rahmawati, Nurdiah; Rini, Tyas Puspita; Rosyadi, Erlan
Makara Journal of Science Vol. 27, No. 4
Publisher : UI Scholars Hub

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Abstract

This study investigates the effect of steam-to-CO molar ratio and temperature on hydrogen production in a water gas shift reaction using a Cu-ZnO-Al2O3 catalyst. Herein, different steam-to-CO molar ratios (1:1, 2:1, and 3:1) and temperatures (200 °C, 250 °C, and 300 °C) were applied to investigate their impact on the reaction and H2 production. The Cu-ZnO-Al2O3 catalyst was characterized by its surface area, pore size distribution, and chemical composition. Moreover, the experimental setup enabled the control of temperature and steam-to-CO molar ratio while monitoring the product gas composition. The results revealed a considerable influence of temperature and steam-to-CO molar ratio on CO conversion efficiency. Notably, the majority of the experiment variations exhibited CO conversion exceeding 90% within 1 min throughout the reaction. Additionally, the highest H2 composition of 53.10% was reached at 250 °C with the steam-to-CO molar ratio of 3:1.
Effects of CaO addition into CuO/ZnO/Al2O3 catalyst on hydrogen production through water gas shift reaction Hastuti, Zulaicha Dwi; Rosyadi, Erlan; Anindita, Hana Nabila; Masfuri, Imron; Rahmawati, Nurdiah; Rini, Tyas Puspita; Anggoro, Trisno; Prabowo, Wargiantoro; Saputro, Frendy Rian; Syafrinaldy, Ade
International Journal of Renewable Energy Development Vol 13, No 4 (2024): July 2024
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2024.59257

Abstract

Hydrogen is a promising renewable energy carrier and eco-friendly alternative to fossil fuels. Water-gas-shift reaction (WGSR) is commonly used to generate hydrogen from renewable biomass feedstocks. Enriching hydrogen content in synthesis gas (syngas) production can be made possible by applying the WGSR after gasification. WGSR can achieve a maximal carbon monoxide (CO) conversion using a commercially patented CZA (Cu/ZnO/Al2O3) catalyst. This study proposed three in-lab self-synthesized CZA catalysts to be evaluated and compared with the patented catalyst performance-wise. The three catalysts were prepared with co-precipitation of different Cu:Zn:Al molar ratios: CZA-431 (4:3:1), CZA-531 (5:3:1) and CZA-631 (6:3:1). The catalysts characteristics were determined through X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) analysis and Scanning Electron Microscopy (SEM) techniques. CO gas was mixed with steam in a catalytic reactor with a 3:1 molar ratio, running continuously through the catalyst at 250 °C for 30 mins. All three catalysts, however, performed below expectations, where CZA-431 had a CO conversion of 77.44%, CZA-531 48.75%, and CZA-631 71.67%. CaO, as a co-catalyst, improved the performance by stabilizing the gas composition faster. The CO conversion of each catalyst also improved: CZA-431 improved its CO conversion to 97.39%, CZA-531 to 96.71%, and CZA-631 to 95.41%. The downward trend of the CO conversion was deemed to be caused by copper content found in CZA-531 and CZA-631 but not in CZA-431, which tended to form a Cu-Zn metal complex, weakening the catalyst's activity.
Co-Authors Anggoro, Trisno Bhaskara, Arya Desi, Sekar Kumala Fauzan, Naazi Hana Nabila Anindita, Hana Nabila Hastuti, Zulaicha Dwi Hens Saputra Masfuri, Imron Muharto, Bambang Murti, Galuh Wirama Nursa'adah, Restu Siti Pertiwi, Astri Prabowo, Wargiantoro Rahmawati, Nurdiah Rosyadi, Erlan Saputro, Frendy Rian Syafrinaldy, Ade