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All Journal Teknika CHEMICA Jurnal Teknik Kimia Agrivet : Jurnal Ilmu-Ilmu Pertanian dan Peternakan (Journal of Agricultural Sciences and Veteriner) Konversi JURNAL KONVERSI JTERA (Jurnal Teknologi Rekayasa) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan JIEMS (Journal of Industrial Engineering and Management Systems) Jurnal Inovasi Teknik Kimia Jurnal Teknik Terapan (J-TETA) Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Sarah Dampang
Universitas Singaperbangsa Karawang
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Other

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EVALUASI ALAT PENUKAR KALOR (COOLER) DI HIGH VACUUM UNIT (HVU) III (STUDI KASUS DI KILANG XYZ) Sarah Dampang
JURNAL KONVERSI Vol 7, No 1 (2018)
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/konversi.7.1.6

Abstract

HVU III is designed to process reduced crude oil from CDU V or reduced crude from export oil existing tanks. HVU III is one unit that aims to lift light fractions that may still be contained in reduced crude. The vacuum condition is designed to attract mild fractions at relatively low temperatures. With the effort to take the product slop wax as HVGO, indeed the operating condition is changing and there is addition of equipment (Pump and HE) and modification of piping. Therefore in this study about design HE (Cooler) with slop wax product as HVGO which will be cooled from temperature 298oC to 70oC with flow rate 40 m3 / hr. And as a cooling medium used Sea Water (sea water) from temperature 30oC to 38oC. Pressure slop wax 20 kg / cm2 and sea water 4 kg / cm2. The calculation results for cooling the wax slop requires a Cooler of 6 (six) units with a seawater requirement of about 709187.39 lb / hr, and heat transferred in a fouled state of 0.0029 hr ft2 F / btu. Pressure drop for slop wax equal to 7.08 psi while sea water equal to 39.33 psi. Under these conditions it is expected that the addition of equipment in this case Cooler can be done as an effort to take the product of slop wax as HVGO.
ANALISIS KEEKONOMIAN PENGAMBILAN SULFUR SECARA BIOLOGI DENGAN PROSES THIOPAQ DI LAPANGAN GAS ALAM XY Sarah Dampang
JURNAL KONVERSI Vol 8, No 1 (2019)
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1039.273 KB) | DOI: 10.24853/konversi.8.1.8

Abstract

Penelitian ini menggunakan pendekatan dari sisi profitabilitas karena menyangkut keuntungan yang langsung dapat diterima secara financial. Dengan menggunakan  proses Thiopaq, apabila harga sulfur sebesar 500 USD/ton maka didapatkan IRR sebesar 33%, harga NPV sebesar USD 53.237.964 dan PBP selama 2,35 tahun. Semakin tinggi harga sulfur maka revenue akan semakin meningkat dan mengakibatkan naiknya nilai NPV dan IRR sedangkan nilai PBP semakin rendah yang berarti bahwa waktu yang diperlukan untuk mencapai angka nol (titik balik modal) akan semakin cepat. Dan analisis sensitivitas menunjukan bahwa harga sulfur yang paling berpengaruh terhadap terjadinya perubahan NPV dan IRR. 
Studi Tentang Keamanan Pejalan Kaki di Kampus Unsika Menggunakan Uji Wilcoxon Signed Rank dan Aplikasi SPSS Sarah Dampang; Cindy Ramayanti; Billy Nugraha
JTERA (Jurnal Teknologi Rekayasa) Vol 3, No 2: December 2018
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v3.i2.2018.273-278

Abstract

Keselamatan pejalan kaki di lingkungan kampus sangatlah penting untuk diperhatikan. Banyaknya lalu-lalang kendaraan seperti motor, mobil, dan kendaraan lainnya di lingkungan kampus menjadi beberapa hal yang dapat membahayakan para pejalan kaki. Penelitian ini dilakukan sebagai studi awal untuk mengetahui bagaimana kondisi yang menunjang keamanan pejalan kaki di Kampus Universitas Singaperbangsa Karawang (Unsika) guna menghindari kecelakaan lalu lintas yang tidak diinginkan. Metode pengumpulan data yang digunakan dalam penelitian ini adalah melalui dokumentasi, angket, dan wawancara. Analisa uji coba yang digunakan adalah uji Wilcoxon Signed Rank dan menggunakan aplikasi SPSS (Statistical Products and Service Solution) versi 23. Hasil penelitian menunjukan bahwa dari 200 responden yang merasa tidak aman berjalan kaki di Kampus Unsika sebesar 77%. Selain itu, dari segi kenyamanan, pejalan kaki di lingkungan Kampus Unsika belum merasa nyaman. Hal ini ditunjukkan dari hasil pengamatan yang diperoleh 85% responden tidak merasa nyaman. Untuk meningkatkan rasa keamanan dan kenyamanan, persentase responden membutuhkan fasilitas seperti trotoar, rambu-rambu, dan peneduh jalan berturut-turut sebesar 92%, 86%, dan 77%. 
Penentuan Harga Bahan Bakar Gas Kendaraan Menggunakan Simulasi Monte Carlo Badaruddin Andi Picunang; Sarah Dampang; Vita Efelina; Billy Nugraha
JTERA (Jurnal Teknologi Rekayasa) Vol 5, No 1: June 2020
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v5.i1.2019.135-150

Abstract

Moda transportasi baik kendaraan pribadi, angkutan umum, maupun angkutan barang yang merupakan potensi market yang strategis bagi industri energi. Hal ini khususnya dalam upaya melakukan konversi pemakaian Bahan Bakar Minyak (BBM) ke Bahan Bakar Gas (BBG). Dengan demikian, optimasi penentuan harga BBG dibanding dengan harga BBM perlu dilakukan untuk memperoleh harga ideal, sehingga dapat memberikan kontribusi bagi para pelaku usaha baik dari sisi efiesiensi, safety maupun keuntungan ekonomi jangka panjang. Penelitian ini bertujuan untuk melakukan optimasi penentuan harga BBG menggunakan simulasi Monte Carlo. Dalam penelitian ini, dipilih suatu uji sampling dengan tingkat akurasi yang baik untuk memprediksi variabel-variabel acak dan dalam jumlah iterasi data yang banyak. Simulasi Monte Carlo dilakukan dengan perangkat Crystal Ball yang merupakan metode statistik yang sudah umum digunakan dalam uji sampling suatu variabel untuk memprediksi segala kemungkinan yang terjadi terhadap berbagai pilihan alternatif. Hasil penelitian menunjukkan wilayah Jakarta memiliki harga gas paling rendah menggunakan metode agregasi yaitu sekitar Rp. 2.900, sedangkan paling tinggi menggunakan metode real yaitu sekitar Rp. 3.300. Wilayah Jawa Barat memiliki harga gas paling rendah menggunakan metode real yaitu sekitar Rp. 3.000, sedangkan paling tinggi menggunakan metode agregasi dan floating USD yaitu sekitar Rp. 3.100. Untuk wilayah Banten harga gas paling rendah menggunakan metode agregasi yaitu sekitar Rp. 2.900, sedangkan paling tinggi menggunakan metode floating USD yaitu sekitar Rp. 3.400.
Pengaruh Kualitas Pelayanan dan Fasilitas Lahan Parkir terhadap Kepuasan Civitas Kampus Asep Erik Nugraha; Kusnadi Kusnadi; Sarah Dampang
JIEMS (Journal of Industrial Engineering and Management Systems) Vol 12, No 1 (2019): Journal of Industrial Engineering and Management Systems
Publisher : Universitas Bunda Mulia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30813/jiems.v12i1.1536

Abstract

The demand for accessible parking services and facilities are growing in the University of Singaperbangsa Karawang (Unsika). This occurred due to the increasing number of vehicles need parking spaces. Some problems can happen because of scrambling over the space, the improper of parking lot building, the ineffective actions in allocating and checking the traffic signs, and the unavailability of traffic signs. The focus of this research was the campus community who use the parking lot. They became the object of the research. The data analysis was used to determine the level of the satisfaction of the campus community towards the service quality and parking facilities in Unsika using the Wilcoxon Signed Rank Test method with Statistical Product and Service Solutions (SPSS) application. The results showed that the campus community was complaining about the quality of service and parking facilities. The perceptions were given in the form of negative perceptions because it was not in line with expectations. The respondents were hoping that the university would pay attention to the quality of services and facilities.
Evaluation Community Satisfaction Evaluation of the Universitas Singaperbangsa Karawang Community Service Program (KKN) Implementation in Sindangsari Village, Bekasi: Evaluasi Tingkat Kepuasan Masyarakat terhadap Pelaksanaan KKN Universitas Singaperbangsa Karawang di Desa Sindangsari, Bekasi Sarah Dampang; Endah Purwanti; Vita Efelina; Azafilmi Hakiim
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol. 10 No. 1 (2026): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : DPD Jatim Perkumpulan Dosen Indonesia Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Community Service Program (KKN) activities are a form of student service to the community that aims to support village development based on local potential. Universitas Singaperbangsa Karawang carries out a KKN program in Sindangsari Village, Cabangbungin District, Bekasi Regency, with various educational and social activities. This article aims to evaluate the level of public satisfaction with the implementation of the KKN program. The method used was a quantitative descriptive survey by distributing questionnaires to 40 respondents from eight hamlets in Sindangsari Village. The results of the study show that the majority of people are satisfied with the implementation of KKN, especially in the aspects of student ethics, the usefulness of the program, and the involvement of residents in activities. These findings show that KKN activities have made a positive contribution to the community and become an evaluative basis for the development of programs in the future.
SINTESIS MEMBRAN AKRILONITRIL BUTADIENA STIRENA TERMODIFIKASI FILLER SULFONASI GRAFENA OKSIDA TEREDUKSI DAN CERIUM OKSIDA Riska Listiarini Iskandar; Sarah Dampang; Muhammad Fahmi Hakim; Meka Saima Perdani; Firgi Siswantito; Eri Widianto; Najmudin Fauji
Jurnal Inovasi Teknik Kimia Vol. 10 No. 4 (2025): October| INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v10i4.13450

Abstract

The utilization of Acrylonitrile Butadiene Styrene (ABS) polymer as an alternative membrane for Direct Methanol Fuel Cell (DMFC) applications has been investigated. This study aims to evaluate the effect of sulfonation temperature on the performance of ABS membranes modified with reduced graphene oxide/cerium oxide (s-rGO/CeO₂). The membranes were synthesized via sulfonation at 65 °C, 75 °C, and 85 °C, with a filler composition of 3% v/v. The results indicate that the addition of filler significantly increases the Ion Exchange Capacity (IEC), with the highest value of 0.375 meq/g obtained at a sulfonation temperature of 85 °C, while methanol permeability was optimally reduced at 65 °C (1.26684 × 10⁻⁷ cm²/s). FTIR analysis confirms successful sulfonation, as evidenced by the appearance of sulfonate (S=O) absorption peaks at 1054 cm⁻¹ and carbonyl (C=O) peaks at 1734 cm⁻¹, indicating interactions between the filler and the ABS matrix. The increased polarity and hydrophilicity of the membrane resulting from filler incorporation demonstrate that filler-modified ABS membranes have strong potential as alternative membranes for DMFC applications.
Analisis Kinerja Heat Exchanger Tipe Shell and Tube Berdasarkan Nilai Fouling Factor, Efesiensi, dan Pressure Drop sebagai Indikator Kinerja Operasional Rantika Sekar Nandira; Sarah Dampang; Sesilia Romalinda; Sheryl Ayesha Bruning; Jatmiko
Jurnal Teknik Terapan Vol. 5 No. 1 (2026): April
Publisher : P3M Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/jteta.v5i1.123

Abstract

The oil and gas industry heavily relies on the efficiency of shell-and-tube heat exchangers to maintain operational stability, optimize energy consumption, and preserve product quality. However, the performance of these units is often degraded by fouling, which increases thermal resistance. This study aims to evaluate the actual performance of a heat exchanger unit in the oil and gas industry by analyzing operational data over a specific period. The research methodology involved direct field observation and quantitative analysis based on key performance parameters, including the overall heat transfer coefficient, fouling factor, thermal efficiency, and pressure drop. The fouling factor was calculated as the difference between the clean and dirty heat transfer coefficients, while thermal efficiency was determined as the ratio of the actual heat transferred to the maximum possible heat transfer. Pressure drop analysis was conducted on both the shell and tube sides using friction factor correlations and fluid hydrodynamic parameters to evaluate flow characteristics. The results indicate a fouling factor of 0.2076 hr·ft²·°F/Btu, which significantly exceeds the standard threshold proposed by Kern (0.002–0.005 hr·ft²·°F/Btu). This high level of fouling results in a heat transfer efficiency of only 64.62%, well below the ideal operational standard of 75%. Hydrodynamic analysis shows that the pressure drop is very low (0.0003–0.0006 psi), indicating that the flow is in the laminar regime (Re < 2100). This laminar condition reduces heat transfer effectiveness due to the dominance of conduction and accelerates the deposition of solid particles on the heat transfer surface. Although the unit is still considered operable, the evaluation results highlight the need for immediate cleaning and flow rate optimization to restore the equipment’s performance to optimal levels and prevent further energy losses
Sintesis dan Karakterisasi Membran Ultrafiltrasi Termodifikasi Kitosan-Silika Kamila Alfiludin; Sarah Dampang; Fitri Yuliasari; Muhammad Fahmi Hakim
TEKNIKA Vol. 19 No. 3 (2025): Teknika September 2025
Publisher : Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15687792

Abstract

Limbah indutsri yang mengandung ion logam berat dapat mencemari lingkungan dan berdampak pada kesehatan. Dalam mengatasi hal tersebut diperlukan solusi alternatif yaitu dengan penggunaan teknologi filtrasi. Pengembangan membran ultrafiltrasi berbahan dasar kitosan dan silika, yang dimodifikasi dengan Polivinil Alkohol (PVA) dan Polietilen Glikol (PEG), bertujuan untuk mengurangi kandungan logam berat dalam limbah industri. Formulasi membran dikembangkan melalui metode trial and error, kemudian dikarakterisasi menggunakan Fourier Transform Infrared (FTIR) untuk identifikasi gugus fungsional, Brunauer-Emmett-Teller (BET) untuk analisis luas permukaan dan pori membran, serta uji swelling untuk mengukur kapasitas penyerapan air. Hasil uji FTIR menunjukkan keberadaan gugus silanol (Si-OH) pada rentang 3268-3290 cm⁻¹, yang berperan dalam interaksi dengan ion logam. Analisis BET mengonfirmasi bahwa membran yang dikembangkan memenuhi karakteristik ultrafiltrasi. Selain itu, membran dengan komposisi kitosan 3 gram dan silika 3 ml menunjukkan performa optimal serta kapasitas swelling yang tinggi, sehingga meningkatkan efektivitas proses filtrasi. Dengan daya tahan dan stabilitas yang baik, membran ini berpotensi untuk diaplikasikan dalam pengolahan limbah industri guna mengurangi kandungan logam berat secara efektif.
Co-Authors Asep Maulana Azafilmi Hakiim Badaruddin Andi Picunang Billy Nugraha Cindy Ramayanti Danny Ramdani Endah Purwanti Eri Widianto Firgi Siswantito Fitri Yuliasari Ibrahim Ibrahim Iqbal Maulana Jatmiko Kamila Alfiludin Kusnadi, Kusnadi Meka Saima Perdani Muhammad Fahmi Hakim Najmudin Fauji Nanang Burhan Nugraha, Asep Erik Nugraha, Billy Ramayanti, Cindi Rantika Sekar Nandira Reni Rahmadewi Riska Listiarini Iskandar Riza Ibnu Adam Rizal Hanifi Sesilia Romalinda Sheryl Ayesha Bruning Suhaeni Suhaeni Tesa Nur Padilah Vita Efelina