Jurnal Rekayasa Proses最新文献

{"title":"Teknoekonomi Penyingkiran Senyawa Sulfur dari Kondensat Gas Alam dengan Metode Desulfurisasi Oksidatif-Ekstraktif","authors":"Tri Partono Adhi, Sardenianto Sardenianto, Antonius Indarto","doi":"10.22146/jrekpros.69864","DOIUrl":"https://doi.org/10.22146/jrekpros.69864","url":null,"abstract":"In the oil and gas production process, apart from hydrocarbons, a number of impurities are produced, including CO2 and sulfur in various concentrations, depending on the conditions and characteristics of the reservoir and the location where the oil and gas is located. To process sulfur removal from condensate, the common technology is HDS (Hydrodesulfurization). However, with process requirements such as high temperature, pressure, and intensive hydrogen consumption, an alternative technology is needed for this desulfurization. One of them is oxidative-extractive desulfurization. Technical and economic evaluations to determine the feasibility of applying on an industrial scale need to be studied further. The study of oxidative-extractive desulfurization process of sulfur compounds (represented as dibenzothiophene, DBT) was carried out using H2O2/formic acid as oxidizing agent and catalyst, as well as extraction with DMF. For a capacity of 1000 bpd of condensate with 1%-wt sulfur, desulfurization was successfully carried out with sulfur removal of 96.55% and condensate recovery of 99.41%. A processing fee of 9.14 USD/barrel is required, of which 84% is required for chemicals. The alternative process configuration for DMF recovery succeeded in reducing chemical costs by 35.5% and reducing total processing costs by 27.0% to 6.67 USD/barrel. In this alternative process configuration, 95.80% sulfur removal was achieved with condensate recovery of 99.21%.","PeriodicalId":17711,"journal":{"name":"Jurnal Rekayasa Proses","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48571106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sintesis polivinil alkohol tersulfonasi sebagai katalis dalam produksi metil ester: review","authors":"Maria Gracella Irawan, Henky Muljana, Asaf Kleopas Sugih, Usman Oemar, Jessica Atin","doi":"10.22146/jrekpros.70698","DOIUrl":"https://doi.org/10.22146/jrekpros.70698","url":null,"abstract":"A B S T R A C TSulfonated polyvinyl alcohol (PVA) can be used as a heterogeneous catalyst in esterification or transesterification reactions during methyl ester production. This catalyst with PVA support has the potential to be used commercially like Amberlyst 46. However, there are several drawbacks in the conventional methods to produce sulfonated PVA compared to Amberlyst 46. In this paper, various processes of sulfonated PVA synthesis will be discussed including the advantages and disadvantages compared to Amberlyst 46. The synthesis of sulfonated PVA catalysts can be carried out using sulfosuccinate acid reagents or other acid reagents that have sulfonic groups that act as the active sites of the catalysts. The use of sulfosuccinate acid as the reagent produces catalysts with better catalytic activity, but the resulting product is not in granule form like Amberlyst 46 and can only be used continuously for seven times. The use of chlorosulfonic acid as the reagent resulted in granular catalysts. However, the catalyst has less catalytic activity and stability, and the reagent has a relatively high environmental impact. For the synthesis performed using sulfuric acid as the reagent, no result regarding catalytic activity has been reported elsewhere. The blending of the catalyst with other polymers resulted in improvements in the thermal stability and mechanical strength of the sulfonated polyvinyl alcohol. After a careful review of the procedures, we propose blending or double cross-linking processes combined with sulfonated PVA synthesis as a promising method to increase the thermal stability and mechanical strength of the catalysts. However, it is necessary to perform further laboratory validations on the catalytic activity of the catalysts produced from the combined method because blending may reduce the acid capacity of the catalyst.Keywords: esterification catalyst, polyvinyl alcohol, sulfonation A B S T R A KPolivinil alkohol (PVA) tersulfonasi dapat digunakan sebagai katalis heterogen dalam reaksi esterifikasi atau transesterifikasi dalam produksi metil ester. Katalis dengan support polivinil alkohol ini berpotensi untuk digunakan secara komersial seperti Amberlyst 46. Akan tetapi, PVA tersulfonasi yang disintesis secara konvensional masih memiliki banyak kekurangan dibandingkan dengan Amberlyst 46. Pada kajian ini akan dibahas mengenai berbagai alternatif proses sintesis PVA tersulfonasi termasuk kelebihan dan kekurangannya jika dibandingkan dengan Amberlyst 46. Sintesis katalis PVA tersulfonasi dapat dilakukan menggunakan reagen asam sulfosuksinat (SSA) maupun reagen asam lainnya yang memiliki gugus sulfonat yang berperan sebagai situs aktif katalis. Penggunaan reagen SSA menghasilkan katalis dengan aktivitas katalitik yang baik namun produk yang dihasilkan tidak berbentuk granula seperti Amberlyst 46 dan hanya dapat digunakan ulang sebanyak tujuh kali. Penggunaan reagen asam klorosulfonat dapat menghasilkan katalis berbentuk granula, ","PeriodicalId":17711,"journal":{"name":"Jurnal Rekayasa Proses","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44541624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peningkatan kualitas air buangan ke laut dengan metode FLOCOM untuk lapangan offshore produksi minyak dan gas bumi","authors":"Adji Swandito, Herman Amrullah, Sutrisno Sutrisno, Dendy Andalas Putra, Cesaria Riza Asyifa","doi":"10.22146/jrekpros.69285","DOIUrl":"https://doi.org/10.22146/jrekpros.69285","url":null,"abstract":"A B S T R A C TWastewater disposal to the sea in oil and gas production is an important and critical part to ensure the continuity of production process and environment. Quality enhancement to reduce oil content in wastewater disposal to the sea could be achieved by injecting chemical in oil and water separation process. Chemical reverse demulsifier base flocculant is generally used for chemical treatment of wastewater disposal; however excessive injection of flocculant forms flock particle that causes deadlock on operation tools. The purpose of this research was to study the effect of innovative FLOCOM method application in wastewater to the sea quality. The experiment was conducted in offshore Attaka field that had flock problem. FLOCOM method application results showed reduction of oil content in wastewater to sea from 20 mg/L to 10 mg/L and reduction of chemical consumption in offshore Attaka field from 4.6 gallons per thousand barrel oil equivalent to 3.2 gallons per thousand barrel oil equivalent.Keywords: flocculant; FLOCOM method; offshore oil and gas field; reverse demulsifier; wastewater to seaA B S T R A KAir buangan ke laut dalam proses produksi minyak dan gas bumi merupakan hal yang penting dan krusial untuk menjamin kesinambungan proses produksi dan lingkungan. Peningkatan kualitas air buangan ke laut dalam rangka menurunkan jumlah minyak terkandung dalam air buangan dapat dilakukan dengan cara injeksi bahan kimia dalam proses pemisahan minyak dan air. Bahan kimia yang umumnya digunakan adalah reverse demulsifier berbasis flokulan. Namun penggunaan flokulan dalam jumlah banyak dapat menimbulkan permasalahan operasi dengan timbulnya partikel flock yang dapat menyebabkan kebuntuan pada alat operasi. Tujuan penelitian ini adalah mempelajari pengaruh aplikasi metode inovasi FLOCOM dalam kualitas air buangan ke laut. Penelitian dilakukan di lapangan offshore Attaka yang terdapat permasalahan flock. Hasil penelitian menunjukkan bahwa metode FLOCOM dapat menurunkan kandungan minyak dalam air buangan ke laut dari 20 mg/L menjadi 10 mg/L serta dapat menurunkan konsumsi injeksi bahan kimia pada lapangan offshore Attaka dari 4.6 gallons per thousand barrel oil equivalent menjadi 3.2 gallons per thousand barrel oil equivalent.Kata kunci: air buangan ke laut; flokulan; lapangan offshore minyak dan gas bumi; metode FLOCOM; reverse demulsifier","PeriodicalId":17711,"journal":{"name":"Jurnal Rekayasa Proses","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47514582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peruraian Anaerobik Termofilik Palm Oil Mill Effluent dengan Variasi Konsentrasi Substrat","authors":"Roberty Wisnu Alvania Kartika, Nadiya Salsabila Desman, I. D. Prijambada","doi":"10.22146/jrekpros.69574","DOIUrl":"https://doi.org/10.22146/jrekpros.69574","url":null,"abstract":"High utilization of palm oil in Indonesia corresponds to palm oil mill effluent (POME). The POME has chemical oxygen demand (COD) of up to 100.000 mg/L, which can pollute the ecosystem if not adequately treated. One of the methods to manage POME is anaerobic thermophilic digestion. The advantage of this method is the production of methane gas which is a form of alternative energy. Substrate concentration affects anaerobic digestion. This preliminary experiment aims to evaluate the performance of anaerobic thermophilic digestion on various POME concentrations at 55 °C. The anaerobic digestion was run with 16.000, 11.000 and 5.000 mg sCOD/L substrate concentrations. Digested cow manure (DCM) was used as inoculum. The process was running in a continuous system after 7-days of acclimatization of the batch system. The result shows that 16.000 and 11.000 mg sCOD/L concentrations produced more methane, but the methane yield was not statistically significant with the Tukey test (p=0,05). The POME with a 5.000 mg sCOD/L concentration produced less methane and plummeted after day 85. The lower methane production at lower substrate concentration was due to the low sCOD availability and high volatile fatty acid (VFA) accumulation which inhibited the methane production.","PeriodicalId":17711,"journal":{"name":"Jurnal Rekayasa Proses","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44476008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mutu dan karakteristik penyalaan briket arang tempurung kelapa dengan aplikasi lapisan arang sengon pada permukaannya","authors":"A. Agussalim, Andi Khairana, Marwan Rajab, Maha Rezky, Ulfa Dwiyanti","doi":"10.22146/jrekpros.70277","DOIUrl":"https://doi.org/10.22146/jrekpros.70277","url":null,"abstract":"A B S T R A C TCoconut shell charcoal briquettes have a better quality than briquettes from other biomass. However, this briquette also has a weakness, namely slow initial ignition. This study aimed to analyze the quality and ignition characteristics of coconut shell charcoal briquettes coated with sengon charcoal on both surfaces. The research materials were coconut shell and sengon wood obtained from Makassar city, South Sulawesi. Firstly, coconut shells and sengon were charcoaled. Coconut shell charcoal and sengon wood were then ground and mixed with 7% and 20% tapioca adhesive, respectively. There were four treatment ratios between coconut shell charcoal (TK) and sengon (S) used in this study, namely (1) TK/S 100/0, (2) TK/S 90/10, (3) TK/S 80 /20, and TK/S/S 0/100. The briquettes that have been made are then dried and conditioned for two weeks. The qualities of the briquettes were tested based on SNI 01-6235-2000, while the initial ignition properties and combustion rate were measured using the modified method of Davies and Abolude (2013). The results showed that the coconut shell charcoal briquettes TK/S 90/10 and 80/20 had a quality that was not significantly different from the uncoated coconut shell charcoal briquettes. In addition, layered charcoal briquettes also have ignition properties similar to sengon charcoal briquettes. Therefore, the application of sengon charcoal as a layer on two surfaces of coconut shell charcoal briquettes with a ratio of TK/S 90/10 can increase the initial ignition properties of the briquettes without significantly reducing the calorific value. Generally, the briquettes fulfilled the standard, namely the moisture content, ash content, and calorific value, except volatile matter.Keywords: coconut shell charcoal briquette; initial ignition properties; layered briquette; sengon briquetteA B S T R A KBriket arang tempurung kelapa memiliki mutu lebih baik dibanding briket dari biomassa lain. Namun di sisi yang lain, briket ini juga memiliki kelemahan pada sifat penyalaan awalnya yang lambat. Penelitian ini bertujuan untuk menganalisis mutu dan sifat penyalaan briket arang tempurung kelapa yang diberi lapisan arang sengon pada bagian permukaannya. Bahan penelitian ini adalah tempurung kelapa dan kayu sengon yang diperoleh dari kota Makassar. Tempurung kelapa dan kayu sengon diarangkan terlebih dahulu. Setelah itu, arang tempurung kelapa dan kayu sengon dihaluskan dan dicampur perekat tapioka masing-masing 7% dan 20%. Ada empat rasio perlakuan antara arang tempurung kelapa (TK) dan sengon (S) yang digunakan dalam penelitian ini, yakni (1) TK/S 100/0, (2) TK/S 90/10, (3) TK/S 80/20, dan TK/S 0/100. Briket yang telah dicetak dikeringkan dan dikondisikan selama dua pekan. Selanjutnya, mutu briket diuji berdasarkan SNI 01-6235-2000, sedangkan sifat penyalaan awal dan kecepatan pembakaran diukur masing-masing dengan menggunakan metode Davies dan Abolude (2013) yang dimodifikasi. Hasil penelitian menunjukkan briket arang","PeriodicalId":17711,"journal":{"name":"Jurnal Rekayasa Proses","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47825894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENGARUH PENGGUNAAN FLY ASH TERHADAP POROSITAS, PERMEABILITAS DAN KUAT TEKAN BETON POROUS PADA PERKERASAN KAKU PERUMAHAN","authors":"Rita Anggraini, Hendri Warman, Taufik, Refky Elfran Nanda, Rini Mulyani","doi":"10.37037/jrftsp.v12i1.124","DOIUrl":"https://doi.org/10.37037/jrftsp.v12i1.124","url":null,"abstract":"Pembangunan jalan secara umum menggunakan pekerasan kaku dan pekerasan lentur yang kedap air menyebabkan berkurangnya daerah resapan air. Oleh sebab itu, dengan adanya pori-pori pada beton, maka dapat digunakan untuk menyerap limpasan permukaan. Berdasarkan dari penelitian yang telah dilakukan, Fly Ash terbukti dapat meningkatkan kekuatan dari beton. Maka salah satu cara agar material hasil produksi sampingan tersebut tidak mencemarkan lingkungan adalah dengan menggunakan material tersebut sebagai bahan penambah sebagian semen. Penelitian ini bertujuan Penelitian ini adalah Untuk mengetahui nilai permeabilitas, porositas serta kuat tekan beton porous dan komposisi maksimum dan minimum yang dihasilkan pada Campuran Fly Ash Dengan Varasi 0% 15%,25%, dan 35%. Dengan menggunakan metode dari [1] American Concrete Institute 522 R-10. Hasil penelitian menunjukan bahwa variasi Fly Ash 25% merupakan hasil yang optimum dimana hasil kuat tekan sebesar 10,333 MPa, porositas Campuran Fly Ash Minimum sebesar 29.3%, dan permeabilitas Maksimum Campuran 0% sebesar 0.70cm/det. Dari hasil penelitian dapat disimpulkan pada variasi 0%, nilai kuat tekannya 9,483 MPa, porositasnya 36.1%, permeabilitasnya 0,70.cm/det, hasil variasi Fly Ash 15% nilai kuat tekannya 8.776 MPa, porositasnya 29.3%, permeabilitasnya 0.64 cm/det hasil variasi Fly Ash 25% nilai kuat tekannya 10,333 MPa, porositasnya 31.2%, permeabilitasnya 0.66 cm/det. dan nilai variasi Fly Ash 35% nilai kuat tekannya 9,766 MPa, porositasnya 33.2%, permeabilitasnya 0.68 cm/det. \u0000  \u0000Kata kunci: Beton Porous, Porositas, Permebelitas, Kuat Tekan \u0000 ","PeriodicalId":17711,"journal":{"name":"Jurnal Rekayasa Proses","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82280944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENGENDALIAN BIAYA PROYEK DENGAN METODA ANALISA VARIAN","authors":"Embun Sari Ayu","doi":"10.37037/jrftsp.v12i1.84","DOIUrl":"https://doi.org/10.37037/jrftsp.v12i1.84","url":null,"abstract":"ABSTRAK \u0000Perkembangan zaman yang semakin maju menuntut perkembangan konstruksi yang semakin modern dengan adanya perkembangan gedung-gedung tinggi yang semakin meningkat dan bervariasi. Manajemen yang baik dibutuhkan dalam suatu perencanaan terlebih pada perencanaan gedung bertingkat tinggi, hal ini di sebabkan besarnya biaya yang dibutuhkan dalam perencanaan tersebut. Masalah-masalah yang terjadi dalam pelaksanaan pekerjaan proyek dapat mengakibatkan proses berjalannya menjadi terlambat dari waktu yang di telah di tentukan, baik secara biaya maupun secara mutu. Salah satu permasalahan yang sering terjadi pada biaya yang telah direncanakan adalah adanya kenaikan harga pasar diakibatkan karena harga satuan yang direncanakan dapat berubah per triwulan, sebagai analogi sederhana konsultan perencana menghitung biaya suatu gedung pada triwulan pertama, sedangkan pekerjaan di laksanakan padan triwulan ke tiga, tentu harga bahan material pada triwulan pertama sangat jauh berbeda dengan harga bahan material pada triwulan ketiga, hal inilah yang sering terjadi pada proses pelaksanaan suatu proyek konstruksi. Penerapan metoda analisa varian biaya dapat diaplikasikan untuk dapat membedakan selisih keuntungan dengan mengacu pada analisa triwulan satu dan triwulan tiga. Sehingga dapat mengantisipasi kerugian yang akan terjadi. Tujuan penelitian ini untuk mengetahui tingkat perbedaan total biaya perencanaan pembelian material serta harga upah pekerja terhadap variasi harga yang terjadi dalam suatu pelaksanaan pekerjaan konstruksi. Analisa dapat dihitung berdasarkan data-data yang dapat di ambil dari laporan pekerjaan pada rentang waktu tertentu kemudian dibandingkan dengan anggaran material dan bahan yang telah ditentukan. \u0000Kata kunci : Pengendalian proyek, biaya proyek, analisa varian \u0000ABSTRACT \u0000The development of the increasingly advanced era demands the development of increasingly modern construction with the development of tall buildings that are increasing and varying. Good management is needed in planning, especially in high-rise building planning, this is due to the large costs required in the planning. Problems that occur in the implementation of project work can result in the running process being late from the predetermined time, both in cost and in quality. One of the problems that often occurs with planned costs is that there is an increase in market prices because the planned unit price can change per quarter, as a simple analogy for planning consultants to calculate the cost of a building in the first quarter, while the work is carried out in the third quarter, of course. The price of materials in the first quarter is very much different from the price of materials in the third quarter, this is what often happens in the process of implementing a construction project. The application of the cost variant analysis method can be applied to differentiate the profit difference by referring to the first quarter and third quarter analysis. So that it can","PeriodicalId":17711,"journal":{"name":"Jurnal Rekayasa Proses","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86905379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENYEBAB DAN DAMPAK KETERLAMBATAN PEKERJAAN JALAN DI SUMATERA BARAT INDONESIA","authors":"E. Rita, Nasfryzal Carlo, Nandi","doi":"10.37037/jrftsp.v11i1.94","DOIUrl":"https://doi.org/10.37037/jrftsp.v11i1.94","url":null,"abstract":"Pada tahun 2018, Dinas Pekerjaan Umum dan Perencanaan Tata Ruang Provinsi Sumatera Barat, Indonesia memiliki 24 paket pekerjaan kontruksi jalan. Hanya 33.3% yang selesai tepat waktu dan sisanya 66.7% mengalami keterlambatan. Penelitian ini dilakukan untuk menentukan penyebab keterlambatan dan dampak yang ditimbulkan. Metoda yang dipakai adalah deskritif evaluatif dengan menggunakan instrumen kuesioner. Kuesioner dibuat menggunakan skala Likert 1 sampai dengan 5 dalam form aplikasi google dan didistrusikan melalui WhatsApp. Sebanyak 33 orang responden berpartsisipasi mewakili owner, kontraktor, dan konsultan. Hasil kuesioner dianalisis secara statistik menggunakan SPPS. Ditemukan 10 faktor utama penyebab keterlambatan dengan urutan sebagai berikut kekurangan material, pembebasan lahan, manajamen lapangan kontraktor, perencanaan dan penjadualkan yang tidak efektif, kesulitan keuangan kontraktor, kesalahan disain, kurangnya peralatan, rendahnya sumberdaya manusia kontraktor, kondisi lapangan proyek yang tidak terduga dan peralatan yang rusak. Akibat keterlambatan tersebut terjadi pembengkakan biaya, pertambahan waktu, dan pelanggaran kontrak. Hasil studi ini sangat bermanfaat bagi pihak yang terlibat dalam penyelenggaraan pekerjaan jalan untuk melakukan perbaikan manajemen sehingga faktor keterlambatan tersebut dapat dihilangkan.","PeriodicalId":17711,"journal":{"name":"Jurnal Rekayasa Proses","volume":"111 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80334456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peramalan Daya Tampung Persimpangan Tidak Sebidang (Studi Kasus: Flyover Pramuka, Kota Bandar Lampung)","authors":"Zenia F Saraswati, Balqis Febriyantina Gunari","doi":"10.37037/jrftsp.v11i1.72","DOIUrl":"https://doi.org/10.37037/jrftsp.v11i1.72","url":null,"abstract":"Kota Bandar Lampung sebagai ibukota Provinsi Lampung menyebabkan jumlah pergerakannya tinggi sehingga kemacetan lalu lintas tidak dapat dihindari pada beberapa ruas jalan di Kota Bandar Lampung. Menanggapi hal permasalahan tersebut, pemerintah Kota Bandar Lampung melakukan banyak pembangunan jalan layang (flyover) untuk sebagai upaya peningkatan kapasitas jalan untuk memenuhi kebutuhan yang tinggi dan diproyeksikan untuk terus meningkat. Flyover Pramuka yang termasuk kedalam wilayah Kecamatan Rajabasa merupakan salah satu dari tiga jalan layang yang dibangun pada tahun 2017-2018. Jalan Pramuka memiliki kegiatan yang cukup beragam yaitu pusat kegiatan perdagangan, pendidikan, dan kesehatan. Penelitian ini dilakukan untuk mengetahui dampak yang ditimbulkan oleh pembangunan jalan layang terhadap performa lalu lintas baik di wilayah internal maupun eksternalnya menggunakan proyeksi VCR pada jalan yang terdampak. Penelitian ini juga mempertimbangkan penggunaan lahan di sekitar Proyeksi dilakukan menggunakan data Matriks Asal dan Tujuan, proyeksi jumlah penduduk, proyeksi kepemilikan kendaraan, serta kapasitas jalan. Hasil analisis penelitian menjelaskan bahwa batas waktu pelayanan jalan pada jalan eksisting/ underpass dan flyover tetap dengan arus stabil dengan VCR < 0.85 adalah 15. Namun kondisi ruas flyover tetap jenuh sehingga pemerintah di tahun 2033, menjadikan batasan intensitas bangunan penting dilakukan.","PeriodicalId":17711,"journal":{"name":"Jurnal Rekayasa Proses","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80075493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENGARUH LOSSES / PRESSURE DROP PADA SISTEM PERPIPAAN HEADER POMPA DALAM MENENTUKAN SPESIFIKASI PENGADAAN POMPA DISTRIBUSI","authors":"Zaitul Mardini","doi":"10.37037/jrftsp.v11i2.83","DOIUrl":"https://doi.org/10.37037/jrftsp.v11i2.83","url":null,"abstract":"Selain perbedaan tinggi (elevasi) yang menjadi parameter dalam perhitungan head pompa, losses / pressure drop yang terjadi pada jaringan sistem perpipaan juga merupakan parameter penting yang harus diperhitungkan. Pada umumnya, losses / pressure drop yang dihitung hanya menghitung mayor losses (pipa) dijaringan perpipaan dengan pertimbangan bahwa apabila L/D > 1000 maka minor losses (accessories) dapat diabaikan. Perbedaan tinggi (elevasi) hanya melihat elevasi pelayanan pelanggan tertinggi dan elevasi Instalasi Pengolahan Air (IPA). Pada pompa distribusi, seringkali  terlupakan untuk menghitung losses / pressure drop pada sistem perpipaan header pompa, yang mana rata-rata posisi pompa distribusi berada dibawah permukaan tanah (underground level). Dalam artikel ini, penulis mencoba menghitung losses / pressure drop yang ada dari pipa hisap pompa distribusi hingga ke flowmeter pipa pada IPA Sei. Harapan Jalur Telkom Sistem Penyediaan Air Minum (SPAM) Batam. Perhitungan dilakukan untuk mengetahui seberapa besar nilai manometric head pompa yang harus ditambahkan pada spesifikasi pengadaan pompa distribusi dan pengaruhnya terhadap biaya operasional pompa. Dari hasil perhitungan diperoleh bahwa diperlukan penambahan head pompa sebesar 1,04 bar dengan penambahan biaya energi listrik untuk operasional pompa sebesar Rp. 13,94 juta/bulan apabila pompa dirunning konstan sebesar 110 lps dan 24 jam/hari.","PeriodicalId":17711,"journal":{"name":"Jurnal Rekayasa Proses","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81548722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}