Article Per Year (5 Year)
p-Index From 2020 - 2025
0.778
P-Index
This Author published in this journals
All Journal PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat QISTINA: Jurnal Multidisiplin Indonesia Bulletin of Chemical Reaction Engineering & Catalysis
Fahrezi, Irgi Ahmad
Unknown Affiliation
Religion Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Nursing Public Health Social Sciences

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Complex Concentrated Alloy Catalyst of AlCrFeCoNi for Heterogeneous degradation of Rhodamine B Sembiring, Kiky Corneliasari; Fahrezi, Irgi Ahmad; Muhdarina, Muhdarina; Afandi, Ahmad
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 1 Year 2024 (April 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20110

Abstract

The Fe-based catalysts have attracted good attention due to their earth abundance and low toxicity with good Fenton-like performance. However, the narrow pH working range and iron-containing sludge produced during the reaction drove the necessary of developing a potential catalyst in the corresponding application. High entropy alloy that now expands to complex concentrated alloy (CCA) represents a new class of material owing to a broader range of functional and structural properties. A new application of CCA as a catalyst for catalytic degradation of azo dyes has already been a scientific research hotspot. AlCrFeCoNi CCA powder has been successfully synthesized by mechanical alloying (MA) method using a vertical planetary ball mill. Based on the characterization, the catalyst possessed a spherical morphology with a particle size range of 3.5-12.6 mm. The catalyst exhibited photo-Fenton performance up to 85.3% which would be a promising Fenton-like catalyst for wastewater treatment. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Pengaruh Efisiensi Biaya dan Operasional Keagenan terhadap Implementasi SSM Pengangkut pada PT Pertamina Transkontinental Balikpapan Fahrezi, Irgi Ahmad; Putri, Indah Ayu Johanda; Kristanto, Vigih Hery; Amrullah, Romanda Annas
QISTINA: Jurnal Multidisiplin Indonesia Vol 4, No 1 (2025): June 2025
Publisher : CV. Rayyan Dwi Bharata

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57235/qistina.v4i1.6178

Abstract

Penelitian ini bertujuan untuk mengkaji dan menganalisis secara mendalam pengaruh efisiensi biaya dan operasional keagenan terhadap implementasi Sistem Single Submission (SSM) Pengangkut pada PT Pertamina Transkontinental Balikpapan. Implementasi SSM Pengangkut yang merupakan sistem baru integrasi layanan digital di bidang pelayaran, diharapkan mampu menyederhanakan proses pengajuan dokumen, meningkatkan transparansi, mempercepat layanan clearance kapal, serta mengurangi pemborosan biaya dalam kegiatan keagenan kapal. Dengan metode penelitian  kuantitatif, serta teknik analisis regresi linier berganda untuk menguji hubungan antara variabel independen (efisiensi biaya dan operasional keagenan) dengan variabel dependen (implementasi SSM Pengangkut). Hasil penelitian menunjukkan bahwa baik efisiensi biaya maupun efisiensi operasional keagenan memiliki pengaruh signifikan terhadap keberhasilan implementasi SSM Pengangkut. Efisiensi biaya terbukti mampu menurunkan total pengeluaran dalam pengurusan dokumen kapal dan mendukung profitabilitas perusahaan. Sementara itu, efisiensi operasional berkontribusi dalam menekan waktu pelayanan serta mencegah keterlambatan keberangkatan kapal yang berdampak luas bagi pemilik kapal, agen, dan pengguna jasa. Dengan demikian, penelitian ini merekomendasikan optimalisasi penggunaan SSM Pengangkut secara menyeluruh di seluruh unit operasional, peningkatan kompetensi sumber daya manusia, serta pengembangan infrastruktur digital yang mendukung integrasi antar instansi. Diharapkan hasil penelitian ini dapat memberikan kontribusi nyata dalam upaya peningkatan efisiensi layanan keagenan kapal dan mendukung pertumbuhan sektor logistik nasional yang lebih kompetitif di era global
Pengaruh Efisiensi Biaya dan Operasional Keagenan terhadap Implementasi SSM Pengangkut pada PT Pertamina Transkontinental Balikpapan Fahrezi, Irgi Ahmad; Putri, Indah Ayu Johanda; Kristanto, Vigih Hery; Amrullah, Romanda Annas
QISTINA: Jurnal Multidisiplin Indonesia Vol 4, No 1 (2025): June 2025
Publisher : CV. Rayyan Dwi Bharata

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57235/qistina.v4i1.6178

Abstract

Penelitian ini bertujuan untuk mengkaji dan menganalisis secara mendalam pengaruh efisiensi biaya dan operasional keagenan terhadap implementasi Sistem Single Submission (SSM) Pengangkut pada PT Pertamina Transkontinental Balikpapan. Implementasi SSM Pengangkut yang merupakan sistem baru integrasi layanan digital di bidang pelayaran, diharapkan mampu menyederhanakan proses pengajuan dokumen, meningkatkan transparansi, mempercepat layanan clearance kapal, serta mengurangi pemborosan biaya dalam kegiatan keagenan kapal. Dengan metode penelitian  kuantitatif, serta teknik analisis regresi linier berganda untuk menguji hubungan antara variabel independen (efisiensi biaya dan operasional keagenan) dengan variabel dependen (implementasi SSM Pengangkut). Hasil penelitian menunjukkan bahwa baik efisiensi biaya maupun efisiensi operasional keagenan memiliki pengaruh signifikan terhadap keberhasilan implementasi SSM Pengangkut. Efisiensi biaya terbukti mampu menurunkan total pengeluaran dalam pengurusan dokumen kapal dan mendukung profitabilitas perusahaan. Sementara itu, efisiensi operasional berkontribusi dalam menekan waktu pelayanan serta mencegah keterlambatan keberangkatan kapal yang berdampak luas bagi pemilik kapal, agen, dan pengguna jasa. Dengan demikian, penelitian ini merekomendasikan optimalisasi penggunaan SSM Pengangkut secara menyeluruh di seluruh unit operasional, peningkatan kompetensi sumber daya manusia, serta pengembangan infrastruktur digital yang mendukung integrasi antar instansi. Diharapkan hasil penelitian ini dapat memberikan kontribusi nyata dalam upaya peningkatan efisiensi layanan keagenan kapal dan mendukung pertumbuhan sektor logistik nasional yang lebih kompetitif di era global
Peningkatan Estetika Kawasan Kampung Ketupat Samarinda Melalui Desain Sculpture: Improving the Aesthetics of Kampung Ketupat Samarinda Through Sculpture Design Hidayati, Zakiah; Putra, Hatta Musthafa Adham; Fahrezi, Irgi Ahmad
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 9 No. 8 (2024): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v9i8.7135

Abstract

Kampung Ketupat, located in the District of Samarinda Seberang - Samarinda, has been a tourist destination since 2017. Kampung Ketupat is one of the old villages in Samarinda located along the Mahakam River, consisting of stilt houses made from ironwood. Many of its residents are artisans who make 'ketupat' (woven palm leaf pouches for rice) containers sold in Samarinda and the surrounding areas. As time passes, facilities such as sculptures in Kampung Ketupat gradually become obsolete both in terms of appearance and materials. Based on these problems, the Building Architecture Study Program - Samarinda State Polytechnic, through Community Service activities, provided a solution to the problem with the Kampung Ketupat sculpture design approach, which is more in line with the needs of the tourist area. The implementation method is direct observation in the field, the study of related literature, interviews with local community groups and communities, and design activities. The result of the activity is a complete working drawing that can be used as a reference in making new sculptures by the management of Kampung Ketupat. Apart from the sculpture's proportions being more monumental, the update includes a more modern and Instagrammable design form and lighting on several sides. The working drawings can be an important input for plans to improve the aesthetics of the Kampung Ketupat area.
Co-Authors Ahmad Afandi HIDAYATI Zakiah Kiky Corneliasari Sembiring Muhdarina Muhdarina Putri, Indah Ayu Johanda Romanda Annas Amrullah Vigih Hery Kristanto