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All Journal Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Abdimas Universal Jurnal Penelitian dan Karya Ilmiah Lembaga Penelitian Universitas Trisakti INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Jurnal AKAL: Abdimas dan Kearifan Lokal Petro : Jurnal Ilmiah Teknik Perminyakan JURNAL ABDI MASYARAKAT INDONESIA (JAMIN) Journal of Earth Energy Science, Engineering, and Technology Jurnal Eksakta Kebumian
Pauhesti Pauhesti
Universitas Trisakti
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ANALISA PRESSURE BUILD UP TEST MENGGUNAKAN SOFTWARE ECRIN DAN METODE MANUAL PADA SUMUR GAS CP-52 & CP-54 LAPANGAN CHAPIN Adven Charlos M Pappin; Trijana Kartoatmodjo; Pauhesti Rusdi
Journal of Mechanical Engineering and Mechatronics Vol 2, No 02 (2017): Journal of Mechanical Engineering and Mechatronics
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (533.575 KB) | DOI: 10.33021/jmem.v2i02.324

Abstract

The CP-52 and CP-54 wells are located on the Tambun structure of Bekasi Regency of West Java Province with the target formation being Baturaja. The pressure build up analysis is carried out for monitoring activities to obtain reservoir and boundary, innitial pressure (Pi), permeability (k), skin (s), ΔP skin, average pressure (Pavg), and flow efficiency information. Tests performed on both wells are pressure build up test (PBU) and to analyze the method of Horner approach pseudo pressure and P2 either manually or with the help of software v.ex.2 v2.02 as validation.
PELATIHAN PEMBUATAN SABUN BATANG DARI MINYAK JELANTAH BAGI WARGA RW 07 KELURAHAN DURI PULO JAKARTA PUSAT Pauhesti Pauhesti; Harin Widiyatni; Prayang Sunny Yulia; Yarra Sutadiwiria
Jurnal AKAL : Abdimas dan Kearifan Lokal Vol. 3 No. 1 (2022): Jurnal AKAL : Abdimas dan Kearifan Lokal
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1678.051 KB) | DOI: 10.25105/akal.v3i1.9872

Abstract

Minyak goreng yang sudah tidak kita pergunakan lagi dapat kita manfaatkan sebagai bahan dasar pembuatan sabun batang yang dapat kita pergunakan dalam kehidupan sehari-hari, seperti untuk mencuci pakaian atau peralatan dapur. Minyak jelantah biasanya kita buang begitu saja ke saluran pembuangan, yang nantinya akan menyumbat saluran pembuangan tersebut karena minyak akan membeku pada suhu rendah atau akan menyebabkan pencemaran lingkungan. Bersumber dari pemikiran tersebut, kami tim PkM dari FTKE Universitas Trisakti mengadakan pelatihan pembuatan sabun batang dari minyak jelantah kepada ibu-ibu warga RW 07 Kelurahan Duri Pulo Jakarta Pusat.  Minyak jelantah tersbut tidak bisa langsung digunakan sebagai bahan pembuatan sabun, karena dari sisi warna dan aroma sangatlah tidak menarik, maka perlu dilakukan pemurnian terlebih dahulu dengan memasukkan karbon aktif (arang) sebagai adsorben ke dalam minyak jelantah untuk menyerap warna dan aroma dari minyak jelantah tersebut. Dengan dapat membuat sabun sendiri diharapkan kita dapat menghemat lebih banyak uang serta mengurangi paparan kita terhadap bahan kimia, karena kita dapat mengetahui bahan apa saja yang kita masukkan ke dalam sabun tersebut.
PEMANFAATAN KEMBALI MINYAK JELANTAH MENJADI LILIN SERBAGUNA SEBAGAI MODAL DASAR BERWIRAUSAHA BAGI WARGA RW 07 KELURAHAN DURI PULO, JAKARTA PUSAT Widia Yanti; Pauhesti Pauhesti; Shabrina Sri Riswati; Mixsindo Korra Herdyanti; Djoko Sulistyanto
Jurnal AKAL : Abdimas dan Kearifan Lokal Vol. 3 No. 1 (2022): Jurnal AKAL : Abdimas dan Kearifan Lokal
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1687.241 KB) | DOI: 10.25105/akal.v3i1.10243

Abstract

Minyak jelantah biasanya dibuang begitu saja ke saluran pembuangan. Oleh karena itu, diperlukan penanganan yang tepat agar minyak jelantah bermanfaat dan tidak menimbulkan kerugian dari aspek kesehatan manusia dan lingkungan. Lokasi kegiatan pengabdian kepada masyarakat kali ini adalah berada di RW 07 Kelurahan Duri Pulo, Jakarta Pusat. Tujuan utama dari kegiatan PKM di lokasi ini adalah untuk memberi pelatihan dan pengetahuan kepada ibu-ibu PKK RW 07 Kelurahan Duri Pulo Jakarta Pusat mengenai pentingnya untuk mengolah limbah minyak jelantah agar memberikan nilai tambah yang dapat meningkatkan perekonomian keluarga. Lilin adalah suatu benda yang memiliki peran cukup penting dalam kehidupan keseharian manusia, terutama ketika tidak ada saluran listrik. Sosialisasi dan pelatihan langsung merupakan metode yang dipilih dalam kegiatan pengabdian kepada masyarakat ini. Hal ini dikarenakan pembelajaran langsung lebih mudah diingat daripada hanya sekedar penyuluhan. Kegiatan ini berjalan lancar dan mendapat antusiasme yang baik dari para ibu-ibu PKK RW 07 Kelurahan Duri Pulo, Jakarta Pusat. Bahkan ibu-ibu tersebut meminta agar kegiatan seperti ini rutin diselenggarakan dan menyarankan agar dapat melakukan penelitian lebih lanjut mengenai pemurnian minyak jelantah sehingga aman untuk digunakan kembali layaknya minyak goreng baru.
UJI LABORATORIUM UNTUK MENINGKATKAN PEROLEHAN MINYAK MENGGUNAKAN INJEKSI SURFAKTAN AOS KONSENTRASI RENDAH Pauhesti Pauhesti; Sugiatmo Kasmungin; Kartika Fajar Hartono
PETRO:Jurnal Ilmiah Teknik Perminyakan Vol. 6 No. 2 (2017): Agustus
Publisher : Jurusan Teknik Perminyakan Fakultas Teknologi Kebumian dan Energi Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.725 KB) | DOI: 10.25105/petro.v6i2.3107

Abstract

Penelitian di laboratorium ini menggunakan surfaktan AOS konsentrasi rendah sebagai upaya untuk meningkatkan perolehan minyak. Penelitian ini merupakan penelitian pendahuluan untuk mengetahui pengaruh surfaktan konsentrasi rendah terhadap perolehan minyak pada suhu tinggi (70 0C). Tujuan dari penelitian ini adalah untuk mengetahui pengaruh injeksi surfaktan anionic dengan konsentrasi rendah terhadap perolehan minyak dan menetukan konsentrasi surfaktan optimum untuk mendapatkan perolehan minyak yang tinggi. Penggunaan surfaktan bertujuan untuk menurunkan tegangan antarmuka antara minyak dan air, sehingga mampu membawa minyak keluar dari pori batuan reservoir.Dari penelitian di laboratorium ini didapat hasil perolehan terbesar pada temperatur 70 0C yaitu pada larutan dengan konsentrasi 0,3 % yaitu sebesar 65 %.
EFFECT OF ION CONCENTRATION OF SMART WATER ON OIL RECOVERY BY SPONTANEOUS IMBIBITION TEST Shabrina Sri Riswati; Wisup Bae; Muslim Abdurrahman; Adi Novriansyah; Syamsul Irham; Dwi Atty Mardiana; Pauhesti
PETRO:Jurnal Ilmiah Teknik Perminyakan Vol. 11 No. 2 (2022): JUNI
Publisher : Jurusan Teknik Perminyakan Fakultas Teknologi Kebumian dan Energi Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (169.976 KB) | DOI: 10.25105/petro.v11i2.15003

Abstract

Smart waterflooding has proven successfully improving oil recovery in numbers of laboratory and field scale applications. The phenomena behind the positive outcome is concluded to be wettability alteration. The smart water composition changes the wettability of the rock surface into partially water-wet, thus promoting a spontaneous imbibition of the aqueous phase and displacing the oil. However, there are some mechanisms causing the wettability alteration that have been proposed by researchers. The present study examines the oil recovery from spontaneous imbibition tests by modifying certain ion composition of the smart water. Prepared core samples with initial water and oil saturation were immersed in spontaneous imbibition cells filled with smart water and the oil recovered was monitored for some period of time. The predesigned smart water compositions consist of different ions concentration, i.e., Na+, Ca2+, and Mg2+, while maintaining identical total dissolved solid (TDS). The experimental results found that the ion composition of smart water affects the oil recovery regardless of the TDS, and low Ca2+ and Mg2+ concentrations shows the highest recovery factor.
PELATIHAN DAN PENYULUHAN KESELAMATAN KERJA BAGI PENAMBANG TRADISIONAL DI DESA WONOCOLO CEPU JAWA TIMUR Pauhesti Pauhesti; Lestari Said; Widia Yanti; Djoko Sulistyanto; Aqlyna Fattahanisa; Ghanima Yasmaniar; Alvin Henk
Jurnal Abdi Masyarakat Indonesia (JAMIN) Vol 1 No 2 (2019): JURNAL ABDI MASYARAKAT INDONESIA (JAMIN)
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1313.117 KB) | DOI: 10.25105/jamin.v1i2.5855

Abstract

Lingkungan kerja yang aman, sehat dan bebas dari pencemaran adalah hal yang diingini oleh setiap perusahaan. Oleh sebab itu dirasa sangat penting, kami para dosen dari Program Studi Teknik Perminyakan Universitas Trisakti, mengadakan penyuluhan dan pelatihan tentang K3 terhadap para penambang tradisional di Desa Wonocolo, Jawa Timur.  Penyuluhan dan pelatihan tersebut bertujuan untuk mengurangi terjadinya kecelakaan dan penyakit akibat kerja sehingga dapat meningkatkan sistem efisiensi dan produktivitas kerja. Perusahaan di Indonesia secara umum termasuk rendah kepeduliannya tentang K3 dibandingkan dengan negara-negara tetangga lain. Indonesia akan sulit menghadapi pasar global dengan kondisi seperti ini,  karena akan mengalami ketidakefisienan pemanfaatan tenaga kerja disebabkan oleh produktivitas kerja yang rendah. Masalah-masalah yang telah diuraikan sebelumnya diupayakan untuk didekati dengan menggunakan gambar-gambar maupun alat peraga. Dengan adanya penyuluhan dan pelatihan tentang K3, diharapkan dapat mengurangi resiko kecelakaan dan gangguan kesehatan bagi para penambang maupun masyarakat di sekitarnya.
Pemanfaatan Minyak Jelantah Untuk Pembuatan Sabun Batang Bagi Anggota Karang Taruna Duri Pulo, Kecamatan Gambir, Jakarta Pusat Pauhesti Pauhesti; Widia Yanti; Puri Wijayanti; Wildan Tri Koesmawardani; Gabey Jane
Abdimas Universal Vol. 4 No. 2 (2022): Oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Balikpapan (LPPM UNIBA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36277/abdimasuniversal.v4i2.228

Abstract

The amount of used cooking oil waste is thrown into the sewer, which over time will compress the sewer and can also pollute the environment. Therefore, it would be good if this used cooking oil is further processed into bar soap that can be used to wash clothes or other kitchenware. The process of making this bar soap uses a cold process, which does not use heating (stove). the chemical used is NaOH. The first stage is the purification of crude oil. Purification is done by soaking charcoal in used cooking oil, for about two days, then the used cooking oil is filtered. This purification does not remove the cloudy color of the used cooking oil, but the odor and turbid color of the used cooking oil is reduced. Then the purified used cooking oil is mixed into the lye, which is a mixture of water and NaOH. Then stir to mix until the solution is slightly thickened like the consistency of liquid soap. Then the mixture is put into a mold made of silicon, after 24 hours or after the soap is solid, the soap can be removed from the mold. This soap cannot be used yet, because it requires a curing process, which is a waiting time phase after solid soap, approximately 45 days. After going through the curing process, leaving it in the open air to ensure the water content evaporates well and the pH of the soap is normal. The solid soap produced from this training is able to clean the dirt on cooking utensils and can also be used as a clothes wash, and does not itch on the skin.
Laboratory Study of Enhanced Oil Recovery with Used Palm Oil Surfactant Injection Puri Wijayanti; Nandito Davy; Onnie Ridaliani; Pauhesti; Samsol; Widia Yanti; Tia Agusta; Rizka Nada Setyani
Journal of Earth Energy Science, Engineering, and Technology Vol. 6 No. 1 (2023): JEESET VOL. 6 NO. 1 2023
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jeeset.v6i1.13640

Abstract

Currently the waste generated from public consumption in Indonesia is very high. One such waste is used palm oil from households and food companies. Utilization of this waste in this research is by recycling waste oil into surfactants which will be used in the Enhanced Oil Recovery (EOR) process. The surfactant concentrations used were 1.3%, 1.5%, 2%, 2.2% and 2.5%. The research began with refining used cooking oil with banana peels for 24 hours. In order to make surfactants, the oil is mixed with KOH and distilled water. Additionaly, brine was made with a salinity of 15,000 ppm. With the interfacial tension test, a solution with an optimum surfactant concentration of 2.2% was obtained. The core flooding test was carried out using waterflooding followed by surfactant flooding at a temperature of 70 oC. From the test results obtained an incremental oil recovery factor of 8.57% and a total oil recovery factor of 47.43%.
ANALISIS PEMANFAATAN SURFAKTAN MINYAK JELANTAH KONSENTRASI RENDAH UNTUK PROSES PENINGKATAN PEROLEHAN MIGAS Muhammad Ibnu; Lestari Said; Puri Wijayanti; Pauhesti Rusdi; Samsol; Prayang Sunny Yulia
Jurnal Eksakta Kebumian Vol. 3 No. 2 (2022): JURNAL EKSAKTA KEBUMIAN (JEK)
Publisher : Fakultas Teknologi Kebumian dan Energi, Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jek.v3i2.10078

Abstract

Abstrak Pada tahap pengembangan untuk meningkatkan perolehan minyak bumi terdiri dari 3 tahapan yaitu:primary recovery, secondary recovery, dan tertiary recovery (Enhanced Oil Recovery). Penelitian menggunakan metode Enhanced Oil Recovery di laboratorium Enhanced Oil Recovery Universitas Trisakti. EOR (Enhanced Oil Recovery). terdiri dari injeksi kimia,injeksi uap panas, injeksi gas, dan injeksi microbial. Metode EOR yang dilakukan pada penelitian adalah injeksi surfaktan. Konsentrasi surfaktan yang digunakan 0,3%, 0,4%, dan 0,75% dengan variasi temperatur 30o C dan 70o C. Prosedur penelitian diawali dengan pembuatan brine dan pembuatan surfaktan. Kemudian perhitungan sifat fisik larutan dan perhitungan sifat fisik batuan sampel. Pada Surfaktan konsentrasi 0,2%, 0,3%, 0,4%, 0,5%, dan 0,75% dilakukan uji IFT (Interfacial Tension) untuk mendapatkan nilai CMC (Critical Micelle Concentration). Nilai CMC berada di 0,4% pada temperatur 30o C dan 70o C. Kemudian dilakukan saturasi minyak, dilanjutkan dengan injeksi brine dan injeksi surfaktan didapat recovery faktor. Dari penelitian, didapat hasil Recovery faktor yang dilakukan pengujian di konsentrasi 0,3%, 0,4%, dan 0,75% di temperatur 30o C didapat RF sebesar 33%, 45,8%, dan 42,2%. Recovery factor pada konsentrasi 0,3%, 0,4%, dan 0,75% di temperatur 70o C sebesar 37,2%, 55%, dan 46,7%. Dihasilkan recovery faktor yang paling bagus di konsentrasi 0,4% di temperatur 30o C dan 70o C   Kata kunci: Enhanced Oil Recovery,injeksi kimia,injeksi surfaktan, minyak jelantah.   Abstract At the development stage to increase oil recovery, it consists of 3 stages, namely: primary recovery, secondary recovery, and tertiary recovery (Enhanced Oil Recovery). The study used the Enhanced Oil Recovery method in the Enhanced Oil Recovery laboratory at Trisakti University. EOR (Enhanced Oil Recovery). consists of chemical injection, hot steam injection, gas injection, and microbial injection. The EOR method used in this study is surfactant injection. The surfactant concentrations used were 0.3%, 0.4%, and 0.75% with variations in temperature of 30o C and 70o C. The research procedure began with making brine and making surfactants. Then the calculation of the physical properties of the solution and the calculation of the physical properties of the rock samples. At 0.2%, 0.3%, 0.4%, 0.5%, and 0.75% surfactants, the IFT (Interfacial Tension) test was performed to obtain the CMC (Critical Micelle Concentration) value. The CMC values were at 0.4% at 30oC and 70oC. Then oil saturation was performed, followed by brine injection and surfactant injection to obtain recovery factor. From the research, it was found that the recovery factor was tested at concentrations of 0.3%, 0.4%, and 0.75% at a temperature of 30o C. The RF was 33%, 45.8%, and 42.2%. Recovery factors at concentrations of 0.3%, 0.4%, and 0.75% at a temperature of 70o C were 37.2%, 55%, and 46.7%. The best recovery factor was obtained at a concentration of 0.4% at temperatures of 30o C and 70o C.   Keywords: Enhanced Oil Recovery, chemical injection, surfactant injection, waste cooking oil
USE OF ANOVA STATISTICAL METHOD IN EVALUATION OF TOFU WASTEWATER USED FOR SPIRULINA CULTURE MEDIUM ENRICHED WITH UREA AND NaHCO3 Mustamina Maulani; Gabriella Jasmine; Rosmalia Dita Nugraheni; Maman Djumantara; Asri Nugrahanti; Bayu Satiyawira; Cahaya Rosyidan; Lisa Samura; Harin Widiyatni; Pauhesti Pauhesti
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 6, NUMBER 2, OCTOBER 2023
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v6i2.16933

Abstract

Indonesia has a large amount of liquid waste originating from the tofu industry. Currently, the treatment of tofu industrial wastewater is carried out using both anaerobic and aerobic methods, but both methods still have several weaknesses. In this study, the tofu industrial wastewater was utilized as a culture medium for Spirulina sp. to provide economic value from wastewater that can be used as bioethanol, pharmaceuticals, and food products rich in omega 3, chlorophyll, carotenoids. Aim: The growth of Spirulina sp. is closely related to the availability of macro and micronutrients as nutrients and the influence of environmental conditions, so this study was aimed to see the best variation of the addition of urea and NaHCO3 as additional nutrients to maximize growth and cell density of Spirulina sp. with tofu industrial wastewater media. Methodology and Results: This study was done by culvitating Spirulina sp in the growth media, measuring the Optical Density (OD), and analyzing quantitatively and using ANOVA on IBM SPSS Statistics version 20. The study indicated that adding urea and NaHCO3 to Spirulina sp. had no effect on cell density and growth rate. Treatment with addition of urea 0.36 g/500 ml without additional of NaHCO3 had the highest growth rate, 0.00852/day, and the highest cell density value on Spirulina sp. growth. Conclusion, significance, and impact study: The tofu liquid waste can be used as a new alternative used as fertilizer because in the liquid tofu waste, it provides the nutrients needed by Spirulina sp.
Co-Authors Adi Novriansyah Adven Charlos M Pappin Alvin Henk Aprilia C. Lauma Aqlyna Fattahanisa Asri Nugrahanti Bayu Satiyawira Cahaya Rosyidan Djoko Sulistyanto Djoko Sulistyanto Gabey Jane Gabriella Jasmine Ghanima Yasmaniar Harin Widiyatni Kartika Fajar Hartono Lestari Said Lestari Said Maman Djumantara Mardiana, Dwi Atty Mixsindo Korra Herdyanti Muhammad Ibnu Muslim Abdurrahman Mustamina Maulani Nandito Davy Onnie Ridaliani, Onnie Prayang Sunny Yulia puri wijayanti Puri Wijayanti Rizka Nada Setyani Rosmalia Dita Nugraheni Samsol Samura, Lisa Shabrina Sri Riswati Shabrina Sri Riswati Sugiatmo Kasmungin Syamsul Irham Tia Agusta Trijana Kartoatmodjo Widia Yanti Widia Yanti Wildan Tri Koesmawardani Wisup Bae Yarra Sutadiwiria Yulia, Prayang Sunny