Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Bulletin of Scientific Contribution : Geology Jurnal Offshore: Oil, Production Facilities, and Renewable Energy
Zahrani, Deanne Ardelia
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Aplikasi Sensor Temperatur dan Inhibitor Sodium Lignosulfonate (SLS) sebagai Solusi Pencegahan serta Monitoring Silica Scaling pada Pipa Pembangkit Listrik Geotermal Safira Rahma Kartika; Firdaus, Azkia Najma; Zahrani, Deanne Ardelia
Jurnal Offshore: Oil, Production Facilities and Renewable Energy Vol. 8 No. 2 (2024): Jurnal Offshore: Oil, Production Facilities and Renewable Energy
Publisher : Universitas Proklamasi 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jo.v8i2.2155

Abstract

One of the problems encountered in geothermal exploitation activities is Silica Scaling Rate (SSR). Addressing SSR remains a significant problem, especially during production in geothermal fields with high Silica Saturation Index (SSI). High SSI can lead to silica deposition in pipes. Silica deposition occurs due to temperature drops, pressure decreases, and pH increases. As the temperature drops, the SSR increases, disrupting the fluid flow process from the reservoir. To address this issue, a system was designed to monitor the pipe's condition and trigger SLS injection if the temperature parameter value dropped. SLS functioned by binding silica particles in the fluid, preventing silica from adhering to the pipe walls. This process was carried out by adding SLS chemicals to the fluid flow through the pipes. SLS materials had the ability to bind silica and effectively prevent scale formation. Based on analysis and calculations, a temperature drop was directly proportional to an increase in SSI. A reference temperature of 95°C was used as an indicator for SLS injection because SSI > 1 at this temperature. A dose of 50 ppm SLS was shown to effectively reduce SSI up to 50%, preventing silica scaling in geothermal pipes. This study demonstrates the effectiveness of SLS as a mitigation strategy for silica scaling, offering a cost-efficient and less disruptive solution compared to conventional pipe cutting methods.
ANALISIS PERSEBARAN SEISMISITAS DAN MEKANISME FOKAL DI WILAYAH TIMUR PULAU JAWA Winusda, Sinta Caenur; Zahrani, Deanne Ardelia; Hasanah, Mia Uswatun
Bulletin of Scientific Contribution Vol 24, No 1 (2026): Bulletin of Scientific Contribution : GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc.v24i1.68682

Abstract

Pulau Jawa merupakan wilayah dengan aktivitas seismotektonik kompleks akibat interaksi antara subduksi Lempeng Indo-Australia dan Lempeng Sunda serta keberadaan sejumlah sesar aktif di daratan. Penelitian ini bertujuan untuk menganalisis persebaran seismisitas dan mekanisme fokal gempa bumi di kawasan Jawa Timur sebagai kajian awal untuk memahami pola tektonik regional. Data yang digunakan meliputi katalog ISC-EHB (1964–2021), BMKG (2009–2021), serta data moment tensor dari GCMT (1976–2022). Setelah proses penyaringan dan penggabungan, sebanyak 13.782 kejadian gempa dianalisis berdasarkan distribusi spasial, kedalaman, serta penampang vertikal per interval 1° bujur. Hasilnya menunjukkan pola seismisitas yang mengikuti geometri subduksi Indo-Australia, membentuk zona Wadati–Benioff dengan kemiringan slab curam ke arah utara–timur laut hingga kedalaman ~600 km. Variasi seismisitas antar lintasan mengindikasikan adanya kemungkinan slab tear dan zona seismic gap pada segmen tengah. Mekanisme fokal memperlihatkan dominasi thrust fault di zona megathrust, sementara wilayah daratan didominasi sesar strike-slip dan oblique-slip yang berkaitan dengan Sesar Kendeng Timur, Probolinggo, dan Blitar. Temuan ini mengonfirmasi bahwa deformasi tektonik di Jawa Timur dipengaruhi oleh kombinasi proses subduksi dan aktivitas sesar lokal, yang penting untuk pemodelan bahaya seismik dan mitigasi bencana gempa bumi di wilayah ini.
Co-Authors Firdaus, Azkia Najma Mia Uswatun Hasanah Safira Rahma Kartika Winusda, Sinta Caenur