Jurnal Serambi Engineering最新文献_第6页

Optimalisasi Pengendalian Persediaan Biji Kopi Dengan Metode EOQ (Studi Kasus Kopi Bubuk Eyang Kakung) 用 EOQ 方法优化咖啡豆库存控制（Eyang Kakung 磨制咖啡案例研究）

Jurnal Serambi Engineering Pub Date : 2023-10-18 DOI: 10.32672/jse.v8i4.6850

Satria Bayu Nugraha, Mohammad Jufriyanto, Ahmad Wasiur Rizqi

引用次数: 0

Analisis Pemilihan Supplier Dalam Pengadaan Material Kapur Menggunakan Analytical Hierarchy Process (Studi Kasus PT. Aneka Jasa Grhadika) 利用层次分析法分析石灰材料采购中的供应商选择（PT. Aneka Jasa Grhadika 案例研究）

Jurnal Serambi Engineering Pub Date : 2023-10-17 DOI: 10.32672/jse.v8i4.6828

Evie Talia Nurrohmah, Yanuar Pandu Negoro, Mohammad Jufriyanto

{"title":"Analisis Pemilihan Supplier Dalam Pengadaan Material Kapur Menggunakan Analytical Hierarchy Process (Studi Kasus PT. Aneka Jasa Grhadika)","authors":"Evie Talia Nurrohmah, Yanuar Pandu Negoro, Mohammad Jufriyanto","doi":"10.32672/jse.v8i4.6828","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6828","url":null,"abstract":"PT Aneka Jasa Grhadika is a company that focuses on the Engineering, Procurement, and Construction (EPC) sector. They are highly committed to maintaining the quality of their products with the aim of providing trust and satisfaction to customers. To manufacture its products, the company adopts three main production systems, namely Make to Order (MTO), Assembly to Order (ATO), and Engineering to Order (ETO). They are very committed to maintaining the quality of their products with the aim of providing trust and satisfaction to customers. The purpose of this study is to formulate the right decision in the context of selecting the best supplier for PT Aneka Jasa Grhadika, which has previously been one of their suppliers. The method applied is the Analytical Hierarchy Process (AHP), a decision-making technique that generates priorities for alternatives when multiple criteria are considered. Therefore, in the decision-making process, decision-makers must transform complex problems into a unified hierarchy of several levels. The results showed that the quality criteria received a weight of 32.5%. The price criteria received a weight of 31.3%, the flexibility criteria received a weight of 15.3%, the delivery criteria received a weight of 10.6% and the service criteria received a weight of 10.3%. In this study, there are three supplier options that can be selected. The analysis results show that PT Timbul Persada has a weight of 39.3%, PT Nafaro Bumi Mandiri has a weight of 37.8%, while supplier PT Harang Bumi Energi has a weight of 22.9%.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139318107","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}

引用次数: 0

Pembentukan Gas Metan dari Karbon Dioksida Menggunakan Katalis Ni/Al2O3 dengan Penambahan Mn Sebagai Promotor 使用添加锰作为促进剂的 Ni/Al2O3 催化剂从二氧化碳中生成甲烷气体

Jurnal Serambi Engineering Pub Date : 2023-10-17 DOI: 10.32672/jse.v8i4.6776

Jihan Syahira Syifa Friema, Robert Junaidi, Mustain Zamhari

{"title":"Pembentukan Gas Metan dari Karbon Dioksida Menggunakan Katalis Ni/Al2O3 dengan Penambahan Mn Sebagai Promotor","authors":"Jihan Syahira Syifa Friema, Robert Junaidi, Mustain Zamhari","doi":"10.32672/jse.v8i4.6776","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6776","url":null,"abstract":"Carbon dioxide (CO2) emissions are a type of greenhouse gas emission which is the main factor in the emergence of the global warming phenomenon. Based on the total CO2 emissions released, there are 3 components that most influence high CO2 emissions, namely the electricity sector (42%), transportation (23%) and housing (6%). The trend of increasing CO2 will continue if no preventive measures are taken globally. One of these preventive efforts is to convert carbon dioxide (CO2) into methane (CH4), or known as the methanation process of carbon dioxide. In the field of fuel, the conversion of carbon dioxide into methane gas has more advantages in terms of thermodynamics. One of the factors that determine the methanation process is the activity of the catalyst. The catalyst used in this study was the Ni/Al2O3 catalyst. Ni/Al2O3 catalyst is a catalyst that has good performance in the methane formation process. However, the Ni/Al2O3 catalyst has disadvantages, one of which is that it is susceptible to carbon deposition and sintering on the catalyst. One way to improve catalyst stability performance is by adding a promoter. This research was carried out by varying the temperature, the amount of Ni/Al2O3 catalyst and adding a promoter to give structural changes to the catalyst. The results showed that the temperature and the amount of catalyst affect the amount of CH4 formed, and the addition of manganese (Mn) initiator can affect the pore structure ofÂ theÂ catalyst.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139318229","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}

引用次数: 0

Modifikasi Kombinasi Elektrokoagulasi â€“ Adsorpsi untuk Menyisihkan Fosfat dan TSS pada Limbah Laundry 改进电凝-吸附组合以去除洗衣废物中的磷酸盐和 TSS

Jurnal Serambi Engineering Pub Date : 2023-10-17 DOI: 10.32672/jse.v8i4.6728

Cello Raka Pramastya

{"title":"Modifikasi Kombinasi Elektrokoagulasi â€“ Adsorpsi untuk Menyisihkan Fosfat dan TSS pada Limbah Laundry","authors":"Cello Raka Pramastya","doi":"10.32672/jse.v8i4.6728","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6728","url":null,"abstract":"The home industry laundry has grown rapidly. However, the growth of this industry has also led to an increase in the volume of laundry wastewater that is discharged into water bodies. This can affect the condition of water bodies, especially since the waste contains phosphates as detergent builders. Therefore, an effective wastewater treatment technology is needed. This research aims to analyze the efficiency of the modified electrocoagulation-adsorption reactor in reducing the concentration of phosphate and TSS in laundry wastewater. Laundry wastewater was flowed at a rate of 0.2 L/minute in the electrocoagulation process with a current strength of 5 A for 60 minutes, followed by column adsorption for 90 minutes conducted in one experimental reactor. Aluminum electrodes and zeolite adsorbent media were used in this experiment. The variables measured were the sampling time intervals between 150-300 minutes with a 30-minute interval. The research results show that the modification of the electrocoagulation-adsorption reactor is capable of reducing the concentration of phosphate and TSS in laundry wastewater. The best efficiency for phosphate reduction occurred at 210 minutes with an efficiency of 97.67%. Meanwhile, the optimal TSS reduction occurred at 300 minutes with an efficiency of 84.26%.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"252 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139318256","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}

引用次数: 0

Perbaikan Sistem Perawatan Mesin Forming dengan Metode FMECA dan RCM Berdasarkan Analisis OEE Pada PT XYZ 基于 OEE 分析的 FMECA 和 RCM 方法改进 PT XYZ 的成型机维护系统

Jurnal Serambi Engineering Pub Date : 2023-10-17 DOI: 10.32672/jse.v8i4.6862

Andrian Akbar Waluyo, Dzakiyah Widyaningrum

{"title":"Perbaikan Sistem Perawatan Mesin Forming dengan Metode FMECA dan RCM Berdasarkan Analisis OEE Pada PT XYZ","authors":"Andrian Akbar Waluyo, Dzakiyah Widyaningrum","doi":"10.32672/jse.v8i4.6862","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6862","url":null,"abstract":"PT XYZ is a manufacturing company operating in the automotive sector. One of this company's flagship products is train brake pads. In production activities there are several machines, including forming machines. Based on secondary data, it is known that this forming machine has the largest contribution to product defects. This research was conducted using the OEE, FMECA, and RCM methodology. The OEE methodology is used to identify the level of effectiveness of forming machines, the FMECA methodology is used to identify critical machines, and the RCM methodology is used to determine machine repair and maintenance intervals and determine the selection of tasks in maintenance activities. The research results show that the OEE value of the forming machine is 83.79%, which is below standard. Based on the FMECA analysis, it is known that there are 2 components that are classified as critical components, namely sheet loading and molding. So, an analysis of maintenance scheduling was carried out on these two components, it was found that the sheet loading component required maintenance every 352,016 minutes and component replacement every 11.58 days with task selection in the form of a directed time. On molding components, maintenance is carried out every 328.60 minutes and component replacement every 11.46 days with the task selection being failure discovery.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139317881","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}

引用次数: 0

Potensi Biogas Dengan Pretreatment Substrat Kulit Kopi Menggunakan Campuran Rumen Sapi 利用牛瘤胃混合物预处理咖啡皮基质的沼气潜力

Jurnal Serambi Engineering Pub Date : 2023-10-17 DOI: 10.32672/jse.v8i4.6730

A. Salwa

{"title":"Potensi Biogas Dengan Pretreatment Substrat Kulit Kopi Menggunakan Campuran Rumen Sapi","authors":"A. Salwa","doi":"10.32672/jse.v8i4.6730","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6730","url":null,"abstract":"Biogas is an alternative energy source to reduce the use of fossil fuels. This research aims to explore the potential production of biogas using pretreatment of coffee husk substrate, both biologically with civet dung and chemically with NaOH solution, and compare it with the process without pretreatment. The fermentation process is carried out by adding rumen microorganisms to each digester with variations in substrate composition and fermentation time for 35 days, with sampling times at 7, 14, 21, 28, and 35 days. Biogas testing is performed by measuring the methane (CH4) content and total solids (TS) in the substrate. The results of the research show that pretreatment of coffee husk substrate has a significant impact on biogas (CH4) production. Biological pretreatment with civet dung produced the highest methane gas, reaching 42.3724% on the 28th day of fermentation with a mixture of 50% coffee husk + 25% rumen + 25% water, while the process without pretreatment produced the lowest methane gas, at 6.38433% on the 7th day of fermentation. The total solids results indicate an increase and decrease in total solids content in the reactor with various treatments. The highest total solids result was obtained with biological pretreatment at 40.15%. This research indicates that biological pretreatment of coffee husk substrate with civet dung can increase biogas production efficiency, which can be a potential solution to reduce dependence on fossil energy sources and sustainably manage coffee husk waste.Keywords: Biogas, Pretreatment, Coffee Peel, Civet Dung, Rumen Microorganisms, Production Efficiency, NaOH Solution.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"87 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139318224","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}

引用次数: 0

Pengendalian Kualitas Kayu Kering Pada Mesin Kiln Dryer Untuk Mengurangi Produk Cacat Dengan Metode Seven Tools Dan Failure Mode Effect Analysis 用七种工具法和失效模式效应分析法控制窑炉干燥机上干燥木材的质量，减少不合格产品

Jurnal Serambi Engineering Pub Date : 2023-10-17 DOI: 10.32672/jse.v8i4.6769

M. Abdurrahman, Akhmad wasiur Rizqi, Mohammad Jufriyanto

{"title":"Pengendalian Kualitas Kayu Kering Pada Mesin Kiln Dryer Untuk Mengurangi Produk Cacat Dengan Metode Seven Tools Dan Failure Mode Effect Analysis","authors":"M. Abdurrahman, Akhmad wasiur Rizqi, Mohammad Jufriyanto","doi":"10.32672/jse.v8i4.6769","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6769","url":null,"abstract":"Konsep kualitas sering dikaitkan dengan kemampuan suatu produk untuk memenuhi kebutuhan dan harapan pelanggan. Penelitian ini melakukan pemeriksaan terhadap langkah-langkah pengendalian kualitas yang digunakan dalam proses pengeringan kayu. Analisis yang dilakukan menggunakan pendekatan tujuh alat yang meliputi check sheet, stratifikasi, diagram kendali, histogram, diagram Pareto, plot sebar, dan diagram tulang ikan. Temuan dari pengumpulan data menunjukkan adanya tiga kategori cacat produk berbeda yang terlihat selama proses pengeringan kayu. Kategori-kategori ini mencakup 1.529 kejadian lengkungan, 1.337 kejadian patah tulang, dan 955 kejadian cek. Berdasarkan penggunaan teknik tujuh alat, ditentukan bahwa kategori cacat produk yang paling dominan adalah kesalahan warp, yang mencakup 40% dari total cacat produk. Komponen penyumbang utama disebabkan oleh faktor teknik yang memiliki nilai indeks keunggulan relatif (RPN) sebesar 168, Solusi yang perlu dilakukan yaitu menyesusaikan kurva pengeringan dengan benar sesuai dengan jenis kayu yang dikeringkan, kurva ini harus mempertimbangkan kelembaban awal kayu, ketebalan, dan jenis kayu yang digunakan, dilakukan pembuatan SOP pengeringan kayu untuk tiap jenis kayu, melakukan sosialisasi atapun pelatihan kepada operator, melakukan pengecekan mesin sebelum digunakan","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139317912","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}

引用次数: 0

Pembuatan Gas Metana Dari Gas Karbon Dioksida (CO2) Menggunakan Katalis Ni/Al2O3 Dengan Promotor Logam Fe 使用含铁金属促进剂的 Ni/Al2O3 催化剂从二氧化碳 (CO2) 气体中生成甲烷气体

Jurnal Serambi Engineering Pub Date : 2023-10-17 DOI: 10.32672/jse.v8i4.6782

Tiara Manda Putri, Robert Junaidi, Anerasari Meidinariasty

引用次数: 0

Analisis Jangkauan Layanan Halte Trans Metro Pasundan Terhadap Lokasi Perguruan Tinggi di Wilayah Bandung Raya Trans Metro Pasundan 公交站到大万隆地区各大学位置的服务范围分析

Jurnal Serambi Engineering Pub Date : 2023-10-17 DOI: 10.32672/jse.v8i4.6803

Indrianawati Indrianawati, S. Sumarno, Tedy Imanuel Selan

引用次数: 0

Optimizing Hospital Waste Management through Fly Trap Technology: A Cost and Potential Problem Analysis 通过捕蝇器技术优化医院废物管理：成本与潜在问题分析

Jurnal Serambi Engineering Pub Date : 2023-10-17 DOI: 10.32672/jse.v8i4.6571

Agistya Rizza Subagyo, Vionna Chantika Salsabilla, Irma Juliana Samantha, Muhammad Faisal Irham, Muhammad Rapika, M. Mutiara, W. K. Suryawan

{"title":"Optimizing Hospital Waste Management through Fly Trap Technology: A Cost and Potential Problem Analysis","authors":"Agistya Rizza Subagyo, Vionna Chantika Salsabilla, Irma Juliana Samantha, Muhammad Faisal Irham, Muhammad Rapika, M. Mutiara, W. K. Suryawan","doi":"10.32672/jse.v8i4.6571","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6571","url":null,"abstract":"The problem that often occurs in hospitals is that regulations related to hospital environmental health still need to be popular in the community. However, the development of technology and science has made agricultural tools and machines experience development and renewal and adapt to environmental conditions. Many types of fly control are available, such as fly traps in temporary garbage shelters in hospitals. This study analyzes operational needs and problems encountered by implementing fly trap technology in hospitals. This study consisted of three stages: budgeting, calculating the Kepner-Tregoe Situation Appraisal (KTSA), and the Kepner-Tregoe Potential Problem Analysis (KTPPA). The total operational costs required for this tool are IDR 887,496.00. Where this cost includes the component of preventing problems that must be faced in fly trap operations. Identification of tool constraints in operation consists of damage to the net on the fly trap, garbage piling up due to overloading in the garbage container, blockage of the entry path for flies to the fly trap, and the garbage collector coming into contact with the waste at the TPS. There are four potential problems in implementing fly traps that we previously identified, where there are possible causes, preventive actions, and contingent actions that can be taken to overcome these potential problems.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":"116 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139317775","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}

引用次数: 0