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Ababil, Pijar Fitrah
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Energy Engineering

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Carbon Capture Utilization (CCU) sebagai Generator Energi Listrik menggunakan Allam Cycle sebagai Upaya Dekarbonisasi Industri Migas Izzati, Fifi; Ababil, Pijar Fitrah; Abror, Hadziqul
Journal of Sustainable Energy Development Vol. 1 No. 1 (2023)
Publisher : Petroleum Engineering, Faculty of Engineering, University of Jember

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Abstract

Along with the development and progress of human civilization, the need for electrical energy continues to increase. For this reason, new energy sources are needed so that energy needs can be met. Carbon dioxide (CO2) can be a new energy source obtained from industrial waste energy processing. CO2 is a type of emission that can cause the formation of greenhouse gas (GHG) emissions and contributes to global climate change. A 6% increase in emissions from 2020 results in emissions of 36.3 giga tons (Gt). One utilization of CO2 emissions that can be done is to convert CO2 emissions into electricity. The data analysis method is done by comparing the technical and economic parameters between the rankine power cycle using H2O as the working fluid and the Allam power cycle using CO2 as the working fluid. The results obtained are that the natural gas-fired Allam cycle has a net HHV and LHV efficiency of 53.17% and 58.90%, respectively. For the coal-fired Allam cycle, the net HHV and LHV efficiencies obtained were 48.88% and 51.44%, respectively. The economic analysis conducted is LCOE, IRR, and NPV. The economic analysis shows that the project is feasible in terms of electricity cost.
EKSTRAKSI LITIUM PADA AIR FORMASI PANAS BUMI DENGAN METODE ADSORPSI (STUDI KASUS PADA PLTP DIENG) Ababil, Pijar Fitrah; Mahendra, Faroucki Seven; Faiqotul Hikmah; Lilo Al Fiqriansyah; Nanda Wulansari
Journal of Sustainable Energy Development Vol. 1 No. 1 (2023)
Publisher : Petroleum Engineering, Faculty of Engineering, University of Jember

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Abstract

Geothermal energy is produced due to the tectonic and volcanic activity of a hydrothermal system in the earth. Geothermal potential in Indonesia is 28,170 MW, but only 1728 MW or 4% of the geothermal potential is utilized as a source of Geothermal Power Plant (GPP). The development of GPP requires a very large investment and is not comparable to the selling price of electricity. The principle of GPP is to use hot steam from the reservoir to generate electricity through a generator. The produced fluid consists of steam and brine water which will later be discharged/reinjected. Brine water comes from meteoric water that settles around the reservoir rocks. This precipitation process will dissolve minerals in the reservoir rock, one of which is lithium which is the raw material for batteries. There are various methods to extract lithium from brine water, including precipitation, ion-exchange, extraction with ion-in-liquids (ILs), and adsorption. The lithium extraction process begins with brine that is adsorbed using Li-ion-sieves and will be eluted with dilute HCl and then precipitated with Na2CO3 to become LiCO3 which will be marketed as battery raw material. The brine at Dieng GPP has a lithium content of 50.11 to 99.4 mg/L in the brine, if the flow rate is 70 tons/hour, 1.89 tons/month of LiCO3 will be obtained.
Co-Authors Faiqotul Hikmah Hadziqul Abror Izzati, Fifi Lilo Al Fiqriansyah Mahendra, Faroucki Seven Nanda Wulansari