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Lilo Al Fiqriansyah
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Energy Engineering

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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.
Analisis Penanggulangan Kadar Gas H2S Pada Aliran Minyak Di Stripper Melalui Penerapan Injeksi Sweetening Gas dan Oil Rate Lilo Al Fiqriansyah; Abror, Hadziqul; Triono, Agus
Journal of Sustainable Energy Development Vol. 2 No. 2 (2024): Journal of Sustainable Energy Development (JSED)
Publisher : Petroleum Engineering, Faculty of Engineering, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jsed.v2i2.812

Abstract

This research evaluates the performance of an existing stripper in handling H2S content in the oil stream in Sukowati Field, Bojonegoro Regency. With H2S content ranging from 2-3%, there's a risk of danger and damage to the piping system. The study aims to assess the stripper's performance, propose an optimization scenario for managing H2S content, and compare the existing stripper's performance with the optimization scenario. The research involved evaluating the stripper from October to December 2023, formulating an optimization scenario, and implementing it in January 2024. Results indicate that the % absorption ratio in the sweetening process averaged 98.99% in the existing stripper and 99.75% in the optimization scenario. The oil rate to sweetening gas ratio averaged 89.31% in the existing stripper and 88.01% in the optimization scenario. The sweetening gas injection to oil rate ratio averaged 10.7% in the existing stripper and 12.0% in the optimization scenario. The optimization scenario reduced H2S content from 24000 ppm to 60 ppm, meeting standards. Overall, optimizing the oil rate to sweetening gas injection ratio improved H2S content reduction efficiency in the stripper, with H2S content at the outlet less than 100 ppm.
Co-Authors Ababil, Pijar Fitrah Agus Triono Faiqotul Hikmah Hadziqul Abror Mahendra, Faroucki Seven Nanda Wulansari