High temperatures can have impact on structural quality, namely the disintegration of hydration products and aggregates, decreased mechanical properties, and increased concrete porosity. Efforts that can be made to minimize structural damage are utilizing concrete innovations with added aluminum slag and palm sugar. Combination of aluminum slag and palm sugar in geopolymer concrete was carried out with the aim of producing lightweight concrete that has good resistance at high temperatures. Aluminum slag and palm sugar were mixed into the concrete mix with the ratio of fly ash: aluminum slag: palm sugar denoted by variations 1,2,3,4,5, and 6 namely 99,9%:0%:0,1%; 89,9%:10%:0,1%; 84,9%:15%:0,1%; 99,85%:0%:0,15%; 89,85%:10%:0,15%; and 84,85%:15%: 0,15%. The dimensions of concrete samples are 10,5x21 cm with curing for 14 days and 28 days, then burned with a combustion temperature of 500 ℃. The tests conducted were compressive strength, porosity, and Ultrasonic Pulse Velocity. The test results showed the best concrete quality in variation 6 with a percentage loss of compressive strength at 28 days of age of 41,2%, a percentage loss of porosity of 17,18%, and a percentage loss of density of 15,4%. Aluminum slag and palm sugar can increase compressive strength, density, and reduce porosity at high temperatures.
{"title":"Ketahanan Panel Beton Ringan Geopolimer Gula Aren dan Slag Aluminium Terhadap Suhu Tinggi","authors":"Fahri Hafisuddin, Aini Fadhilah, Wicaksono Mahestra Noegroho, Dinni Yunike Jasril, Gunawan Wibisono, Monita '. Olivia","doi":"10.32672/jse.v8i4.6950","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6950","url":null,"abstract":"High temperatures can have impact on structural quality, namely the disintegration of hydration products and aggregates, decreased mechanical properties, and increased concrete porosity. Efforts that can be made to minimize structural damage are utilizing concrete innovations with added aluminum slag and palm sugar. Combination of aluminum slag and palm sugar in geopolymer concrete was carried out with the aim of producing lightweight concrete that has good resistance at high temperatures. Aluminum slag and palm sugar were mixed into the concrete mix with the ratio of fly ash: aluminum slag: palm sugar denoted by variations 1,2,3,4,5, and 6 namely 99,9%:0%:0,1%; 89,9%:10%:0,1%; 84,9%:15%:0,1%; 99,85%:0%:0,15%; 89,85%:10%:0,15%; and 84,85%:15%: 0,15%. The dimensions of concrete samples are 10,5x21 cm with curing for 14 days and 28 days, then burned with a combustion temperature of 500 ℃. The tests conducted were compressive strength, porosity, and Ultrasonic Pulse Velocity. The test results showed the best concrete quality in variation 6 with a percentage loss of compressive strength at 28 days of age of 41,2%, a percentage loss of porosity of 17,18%, and a percentage loss of density of 15,4%. Aluminum slag and palm sugar can increase compressive strength, density, and reduce porosity at high temperatures.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139308333","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}
PT HMG is an injection molding company that is a subcontractor of PT Ichikoh Indonesia. The variety of product types produced and the irregular placement of products belonging to subcontractors PT Ichikoh Indonesia resulted in a buildup of products, which resulted in ineffectiveness in searching for goods and moving goods. This problem can result in longer handling times and longer handling distances. Based on these problems, PT HMG decided to add a storage area as a warehouse, which will function as a place to store products belonging to subcontractor PT Ichikoh Indonesia. So, it is necessary to design a layout so the products are neatly arranged and make it easier for warehouse operators to search and handle them using dedicated storage and class-based storage methods. The distance obtained using the dedicated storage method was 9,013 m, and the handling time was 180,277 minutes. Meanwhile, using the class-based storage method, the transfer distance was 10,180 m, and the handling time was 203,601 minutes. The selected warehouse layout design is a layout with a dedicated storage method.
PT HMG 是一家注塑公司，是 PT Ichikoh Indonesia 的分包商。由于生产的产品种类繁多，而且分包商 PT Ichikoh Indonesia 的产品摆放不规范，导致产品堆积，从而造成寻找货物和搬运货物的效率低下。这个问题会导致搬运时间和搬运距离的延长。基于这些问题，PT HMG 决定增加一个仓储区作为仓库，用于存放分包商 PT Ichikoh Indonesia 的产品。因此，有必要设计一个布局，使产品整齐摆放，便于仓库操作员使用专用存储和分类存储方法搜索和处理产品。使用专用存储方法获得的距离为 9,013 米，处理时间为 180,277 分钟。同时，使用分类存储方法，转移距离为 10,180 米，处理时间为 203,601 分钟。选定的仓库布局设计是采用专用存储方法的布局。
{"title":"Perancangan Tata Letak Gudang dengan Membandingkan Metode Dedicated Storage dan Class Based Storage (Studi Kasus: Perusahaan Komponen Otomotif)","authors":"Febriza Imansuri, Rahmat Dwi Febriyanto, Indra Rizki Pratama, Fredy Sumasto, Siti Aisyah","doi":"10.32672/jse.v8i4.6957","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6957","url":null,"abstract":"PT HMG is an injection molding company that is a subcontractor of PT Ichikoh Indonesia. The variety of product types produced and the irregular placement of products belonging to subcontractors PT Ichikoh Indonesia resulted in a buildup of products, which resulted in ineffectiveness in searching for goods and moving goods. This problem can result in longer handling times and longer handling distances. Based on these problems, PT HMG decided to add a storage area as a warehouse, which will function as a place to store products belonging to subcontractor PT Ichikoh Indonesia. So, it is necessary to design a layout so the products are neatly arranged and make it easier for warehouse operators to search and handle them using dedicated storage and class-based storage methods. The distance obtained using the dedicated storage method was 9,013 m, and the handling time was 180,277 minutes. Meanwhile, using the class-based storage method, the transfer distance was 10,180 m, and the handling time was 203,601 minutes. The selected warehouse layout design is a layout with a dedicated storage method.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139306539","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}
Industri manufaktur kini mengalami perkembangan dan persaingan yang sangat ketat di beragam bidang. Perusahaan harus mampu melampaui ekspektasi dan tingkat kepuasan klien dengan tetap menjaga kualitas produk agar tetap kompetitif. Penelitian ini bertujuan untuk memahami proses perakitan bodi mobil yang menggunakan line produksi dan memahami sistem yang diterapkan dalam proses perakitan bodi mobil. Penelitian dilakukan dengan metode wawancara secara mendalam tentang bagaimana proses perakitan bodi mobil di bagian assembly pada PT tersebut. Pada perakitan ini terdapat empat pilar yaitu kualitas, produktivitas, biaya rendah, dan faktor keamanan. Hasil studi menunjukkan bahwa penerapan empat aspek memiliki dampak yang sangat signifikan. Empat aspek tidak mempunyai urutan prioritas, pelaksanaannya disesuaikan oleh kondisi yang ada pada di lapangan. Aspek-aspek tersebut harus dikembangkan secara berkelanjutan untuk mencapai target perkembangan pada sektor industri.
{"title":"Proses Perakitan Bodi Mobil pada bagian Assembly di PT. XYZ Plant Cikarang","authors":"Bagas Dwi Estanto, Viktor Naubnome","doi":"10.32672/jse.v8i4.6914","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6914","url":null,"abstract":"Industri manufaktur kini mengalami perkembangan dan persaingan yang sangat ketat di beragam bidang. Perusahaan harus mampu melampaui ekspektasi dan tingkat kepuasan klien dengan tetap menjaga kualitas produk agar tetap kompetitif. Penelitian ini bertujuan untuk memahami proses perakitan bodi mobil yang menggunakan line produksi dan memahami sistem yang diterapkan dalam proses perakitan bodi mobil. Penelitian dilakukan dengan metode wawancara secara mendalam tentang bagaimana proses perakitan bodi mobil di bagian assembly pada PT tersebut. Pada perakitan ini terdapat empat pilar yaitu kualitas, produktivitas, biaya rendah, dan faktor keamanan. Hasil studi menunjukkan bahwa penerapan empat aspek memiliki dampak yang sangat signifikan. Empat aspek tidak mempunyai urutan prioritas, pelaksanaannya disesuaikan oleh kondisi yang ada pada di lapangan. Aspek-aspek tersebut harus dikembangkan secara berkelanjutan untuk mencapai target perkembangan pada sektor industri.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139307441","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}
PT. Sinar Mas Agro Resources and Technology tbk (PT. Smart tbk) adalah salah satu perusahaan yang bergerak dalam bidang agro bisnis, Saat ini, perusahaan menghadapi permasalahan terkait dengan banyaknya kegagalan proses pengemasan margarin yang terjadi pada saat proses pengemasan margarin yang sedang berlangsung (work in process) agar perusahaan mampu menurunkan kegagalan proses kemasan margarin dengan hasil yang optimal oleh karena itu diperlukan upaya perbaikan dalam menurunkan kegagalan proses pengemasan margarin yang dilakukan dengan menerapkan metode PDCA untuk mengetahui penyebab kegagalan tersebut. Kegagalan proses pengemasan berupa plastik pembungkus kekecilan, karton sobek, kemasan berlubang, plastik top seal bocor, penutup bawah kemasan terlipat plastik bottom seal bocor, kemasan penyok. Upaya menurunkan kegagalan dalam proses pengemasan margarin dengan penerapan metode PDCA di PT. Smart tbk Surabaya dengan melakukan standarisasi proses pengemasan margarin di area pengemasan. Upaya tersebut sangat efektif dibuktikan adanya penurunan kerugian perusahaan dalam proses pengemasan yang semula sebesar Rp 9.329.532 menjadi Rp 391.422 dan biaya kemasan yang dikeluarkan perusahaan sebesar Rp 2.649 per pcs. Upaya tersebut dapat dijadikan sebagai pertimbangan efisiensi dan perbaikan perusahaan pada proses pengemasan margarin ke depannya.
{"title":"Upaya Menurunkan Kegagalan Proses Pengemasan Margarin di PT. Smart Tbk Surabaya","authors":"Nurwidiah Sulistyo Nugroho, Erni Puspanantasari Putri","doi":"10.32672/jse.v8i4.6958","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6958","url":null,"abstract":"PT. Sinar Mas Agro Resources and Technology tbk (PT. Smart tbk) adalah salah satu perusahaan yang bergerak dalam bidang agro bisnis, Saat ini, perusahaan menghadapi permasalahan terkait dengan banyaknya kegagalan proses pengemasan margarin yang terjadi pada saat proses pengemasan margarin yang sedang berlangsung (work in process) agar perusahaan mampu menurunkan kegagalan proses kemasan margarin dengan hasil yang optimal oleh karena itu diperlukan upaya perbaikan dalam menurunkan kegagalan proses pengemasan margarin yang dilakukan dengan menerapkan metode PDCA untuk mengetahui penyebab kegagalan tersebut. Kegagalan proses pengemasan berupa plastik pembungkus kekecilan, karton sobek, kemasan berlubang, plastik top seal bocor, penutup bawah kemasan terlipat plastik bottom seal bocor, kemasan penyok. Upaya menurunkan kegagalan dalam proses pengemasan margarin dengan penerapan metode PDCA di PT. Smart tbk Surabaya dengan melakukan standarisasi proses pengemasan margarin di area pengemasan. Upaya tersebut sangat efektif dibuktikan adanya penurunan kerugian perusahaan dalam proses pengemasan yang semula sebesar Rp 9.329.532 menjadi Rp 391.422 dan biaya kemasan yang dikeluarkan perusahaan sebesar Rp 2.649 per pcs. Upaya tersebut dapat dijadikan sebagai pertimbangan efisiensi dan perbaikan perusahaan pada proses pengemasan margarin ke depannya.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139308464","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}
CV Tirta Bening Abadi adalah usaha yang memproduksi air minum dalam kemasan dengan nama merek NAie. Persaingan berbagai jenis merek menjadi tantangan besar yang harus dihadapi oleh sebuah perusahaan air minum, sehingga perusahaan harus mampu mempertahankan produktivitasnya untuk mencapai target pasar yang luas. Penelitian ini bertujuan untuk mengidentifikasi produktivitas parsial pada CV Tirta Bening Abadi menggunakan metode POSPAC (Production, Organization, Sales, Product, Arbeiter dan Capital). Teknik analisis untuk mengetahui penyebab penurunan produktivitas menggunakan Fishbone Diagram. Hasil pengukuran menunjukkan bahwa produktivitas produksi, penjualan dan produk mengalami penurunan pada tahun 2021 dan 2022. Sedangkan produktivitas organisasi, tenaga kerja dan modal mengalami peningkatan pada tahun 2021 dan 2022. Faktor penyebab penurunan produktivitas produksi yaitu mesin/peralatan rusak, produk cacat, bahan baku sering habis atau telat sampai, tidak ada karyawan quality control, penundaan produksi, dan penambahan biaya backwash maintenance. Penurunan produktivitas penjualan diakibatkan oleh reseller tidak bertambah, kemampuan pemasaran kurang, biaya penjualan meningkat dan kurang promosi. Penurunan produktivitas produk disebabkan oleh kualitas bahan baku kurang, harga bahan baku meningkat, karyawan kelelahan, banyaknya kardus produk jadi bocor dan rusak, jumlah produksi fluktuatif, dan peningkatan biaya karyawan lembur.
{"title":"Analisis Produktivitas Parsial Menggunakan Metode POSPAC pada CV Tirta Bening Abadi","authors":"Edy Fradinata, D. Asmadi, Zuherna Zuherna","doi":"10.32672/jse.v8i4.6962","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6962","url":null,"abstract":"CV Tirta Bening Abadi adalah usaha yang memproduksi air minum dalam kemasan dengan nama merek NAie. Persaingan berbagai jenis merek menjadi tantangan besar yang harus dihadapi oleh sebuah perusahaan air minum, sehingga perusahaan harus mampu mempertahankan produktivitasnya untuk mencapai target pasar yang luas. Penelitian ini bertujuan untuk mengidentifikasi produktivitas parsial pada CV Tirta Bening Abadi menggunakan metode POSPAC (Production, Organization, Sales, Product, Arbeiter dan Capital). Teknik analisis untuk mengetahui penyebab penurunan produktivitas menggunakan Fishbone Diagram. Hasil pengukuran menunjukkan bahwa produktivitas produksi, penjualan dan produk mengalami penurunan pada tahun 2021 dan 2022. Sedangkan produktivitas organisasi, tenaga kerja dan modal mengalami peningkatan pada tahun 2021 dan 2022. Faktor penyebab penurunan produktivitas produksi yaitu mesin/peralatan rusak, produk cacat, bahan baku sering habis atau telat sampai, tidak ada karyawan quality control, penundaan produksi, dan penambahan biaya backwash maintenance. Penurunan produktivitas penjualan diakibatkan oleh reseller tidak bertambah, kemampuan pemasaran kurang, biaya penjualan meningkat dan kurang promosi. Penurunan produktivitas produk disebabkan oleh kualitas bahan baku kurang, harga bahan baku meningkat, karyawan kelelahan, banyaknya kardus produk jadi bocor dan rusak, jumlah produksi fluktuatif, dan peningkatan biaya karyawan lembur.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139311613","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}
Salwatul Aisy, Yanuar Pandu Negoro, Mohammad Jufriyanto
PT. X merupakan perusahaan yang bergerak dalam bidang produksi daur ulang plastik. Dalam menjalankan proses pengolahan limbah di PT. X masih mengalami risiko pada proses pengolahan limbah. Risiko yang terjadi di PT. X yaitu terjadinya beberapa penghambat proses pengolahan limbah dikarenakan kurangnya perawatan dan pengecekan mesin. Penelitian ini bertujuan untuk mengidentifikasi risiko yang berpotensi sebagai penghambat proses pengolahan limbah. Penelitian ini dilakukan dengan menggunakan metode Hazard Identification, Risk Assessment, and Risk Control (HIRARC). Dari hasil penelitian terdapat 7 penyebab bahaya dan 13 risiko. Kemudian untuk risk level terdapat 3 kategori yaitu low, high, dan very high. Pengendalian risiko dilakukan terhadap risiko yang memiliki level low risk yaitu pompa terbakar, level high risk yaitu air inlet tidak terkontrol, pompa hanya menyedot angin, tekanan air pada valve naik, tekanan angin pada pompa menurun, pressure gauge menurun, aliran air yang masuk tidak mencukupi, dan pasokan udara tidak mencukupi, level very high yaitu tekanan angin pada pompa menurun, udara pada vesfel tidak terkontrol, dan lumpur mengendap.
PT X 是一家从事塑料回收生产的公司。在 PT X 公司进行废物处理过程中，废物处理过程仍然存在风险。PT X 出现的风险是，由于缺乏维护和机器检查，废物处理过程中出现了一些障碍。本研究旨在识别有可能阻碍废物处理过程的风险。本研究采用危害识别、风险评估和风险控制（HIRARC）方法进行。从研究结果来看，有 7 个危险原因和 13 个风险。风险等级分为低、高和极高 3 类。对低风险等级（即水泵烧毁）、高风险等级（即进水不受控制、水泵只吸风、阀门内水压上升、水泵内风压下降、压力表下降、进水流量不足、供气不足）、极高风险等级（即水泵内风压下降、vesfel 内空气不受控制、泥浆沉淀）的风险进行风险控制。
{"title":"Analisis Manajemen Risiko Proses Pengolahan Limbah Mesin Dissolved Air Floatation dengan Metode Hazard Identification, Risk Assessment, and Risk Control (Studi Kasus PT. X)","authors":"Salwatul Aisy, Yanuar Pandu Negoro, Mohammad Jufriyanto","doi":"10.32672/jse.v8i4.6904","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6904","url":null,"abstract":"PT. X merupakan perusahaan yang bergerak dalam bidang produksi daur ulang plastik. Dalam menjalankan proses pengolahan limbah di PT. X masih mengalami risiko pada proses pengolahan limbah. Risiko yang terjadi di PT. X yaitu terjadinya beberapa penghambat proses pengolahan limbah dikarenakan kurangnya perawatan dan pengecekan mesin. Penelitian ini bertujuan untuk mengidentifikasi risiko yang berpotensi sebagai penghambat proses pengolahan limbah. Penelitian ini dilakukan dengan menggunakan metode Hazard Identification, Risk Assessment, and Risk Control (HIRARC). Dari hasil penelitian terdapat 7 penyebab bahaya dan 13 risiko. Kemudian untuk risk level terdapat 3 kategori yaitu low, high, dan very high. Pengendalian risiko dilakukan terhadap risiko yang memiliki level low risk yaitu pompa terbakar, level high risk yaitu air inlet tidak terkontrol, pompa hanya menyedot angin, tekanan air pada valve naik, tekanan angin pada pompa menurun, pressure gauge menurun, aliran air yang masuk tidak mencukupi, dan pasokan udara tidak mencukupi, level very high yaitu tekanan angin pada pompa menurun, udara pada vesfel tidak terkontrol, dan lumpur mengendap.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139312041","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}
H. N. Chamidy, Saripudin Saripudin, A. Permanasari
Kulit nanas merupakan limbah yang mengandung glukosa sehingga dapat dimanfaatkan menjadi bioetanol. Kulit nanas selama ini belum banyak dimanfaatkan sehingga tidak memiliki nilai ekonomis.  Penelitian ini bertujuan memanfaatkan limbah kulit nanas untuk menjadi bioetanol dengan cara fermentasi, dimana proses fermentasi akan dilanjutkan dengan distilasi. Fokus penelitian ini berada pada variasi konsentrasi gula substrat karena kenyataannya limbah kulit nanas di lingkungan memiliki konsentrasi gula yang berbeda-beda. Penelitian ini dilakukan dalam skala home industry dengan proses yang dibuat semirip mungkin dengan proses pembuatan bioetanol yang dilakukan pada industri besar. Kapasitas produksi 5 L dengan substrat berupa air perasan kulit nanas. Variasi substrat yang digunakan adalah 3, 4, 5, dan 6 °Bx dengan waktu fermentasi 3 dan 5 hari. Mikroorganisme yang digunakan adalah yeast kering dengan variasi berat 5, 10, dan 15 g. Nutrien berupa pupuk NPK dan Urea dengan kadar 0,5% (b/v). Media fermentasi tidak disterilisasi untuk menyamakan dengan kondisi proses yang ada di industri bioetanol. Hasil fermentasi didistilasi pada suhu 83 °C selama kurang lebih 2 jam. Hasil terbaik diperoleh pada variasi konsentrasi substrat dengan kadar gula 6 °Bx, berat yeast 15 g, yaitu kadar alkohol setelah fermentasi sebesar 9 % dan hasil distilasi diperoleh kadar alkohol 45% sebanyak 170 ml.
{"title":"Pengaruh Waktu, Jumlah Yeast, dan Konsentrasi Substrat Pada Fermentasi Limbah Kulit Nanas Menjadi Bioetanol Skala Home Industry","authors":"H. N. Chamidy, Saripudin Saripudin, A. Permanasari","doi":"10.32672/jse.v8i4.6784","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6784","url":null,"abstract":"Kulit nanas merupakan limbah yang mengandung glukosa sehingga dapat dimanfaatkan menjadi bioetanol. Kulit nanas selama ini belum banyak dimanfaatkan sehingga tidak memiliki nilai ekonomis.  Penelitian ini bertujuan memanfaatkan limbah kulit nanas untuk menjadi bioetanol dengan cara fermentasi, dimana proses fermentasi akan dilanjutkan dengan distilasi. Fokus penelitian ini berada pada variasi konsentrasi gula substrat karena kenyataannya limbah kulit nanas di lingkungan memiliki konsentrasi gula yang berbeda-beda. Penelitian ini dilakukan dalam skala home industry dengan proses yang dibuat semirip mungkin dengan proses pembuatan bioetanol yang dilakukan pada industri besar. Kapasitas produksi 5 L dengan substrat berupa air perasan kulit nanas. Variasi substrat yang digunakan adalah 3, 4, 5, dan 6 °Bx dengan waktu fermentasi 3 dan 5 hari. Mikroorganisme yang digunakan adalah yeast kering dengan variasi berat 5, 10, dan 15 g. Nutrien berupa pupuk NPK dan Urea dengan kadar 0,5% (b/v). Media fermentasi tidak disterilisasi untuk menyamakan dengan kondisi proses yang ada di industri bioetanol. Hasil fermentasi didistilasi pada suhu 83 °C selama kurang lebih 2 jam. Hasil terbaik diperoleh pada variasi konsentrasi substrat dengan kadar gula 6 °Bx, berat yeast 15 g, yaitu kadar alkohol setelah fermentasi sebesar 9 % dan hasil distilasi diperoleh kadar alkohol 45% sebanyak 170 ml.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139312771","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}
PT. XYZ is a construction business that manages several projects, including house construction. Through interviews with company HSE personnel, it was revealed that several workplace incidents had occurred, such as falling from scaffolding, getting caught in machinery, inhaling dust particles, tripping, experiencing head injuries, and even being hit. destroyed by matter. The aim of this research is to detect work accidents that may arise as a result of house construction operations carried out by PT. XYZ, using the HAZOP approach. HAZOP is a hazard analysis technique used to ensure safety in new or modified systems by identifying potential hazards or operational problems. This involves assessing the level of hazard and the risks associated with that hazard using probability and consequence analysis. The findings are then categorized using a Risk Matrix. Based on research findings, six types of industrial accidents have high priority risks: material spills, falls from heights, scattered materials, being pierced by metal tips, falling from scaffolding, and dust inhalation. Risk control recapitulation can be done by tidying up unused materials, throwing away unnecessary materials, clarifying work processes, implementing 5S in the work area, wearing complete APD, focusing on work, checking how workers work, and ensuring equipment is in good condition.
{"title":"Analisis Keselamatan Dan Kesehatan Kerja Dengan Metode Hazard And Operability (HAZOP) Pada Proyek Pembangunan Perumahan Oleh PT. XYZ","authors":"M. Qowiyuddin, Mohammad Jufriyanto, Elly Ismiyah","doi":"10.32672/jse.v8i4.6907","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6907","url":null,"abstract":"PT. XYZ is a construction business that manages several projects, including house construction. Through interviews with company HSE personnel, it was revealed that several workplace incidents had occurred, such as falling from scaffolding, getting caught in machinery, inhaling dust particles, tripping, experiencing head injuries, and even being hit. destroyed by matter. The aim of this research is to detect work accidents that may arise as a result of house construction operations carried out by PT. XYZ, using the HAZOP approach. HAZOP is a hazard analysis technique used to ensure safety in new or modified systems by identifying potential hazards or operational problems. This involves assessing the level of hazard and the risks associated with that hazard using probability and consequence analysis. The findings are then categorized using a Risk Matrix. Based on research findings, six types of industrial accidents have high priority risks: material spills, falls from heights, scattered materials, being pierced by metal tips, falling from scaffolding, and dust inhalation. Risk control recapitulation can be done by tidying up unused materials, throwing away unnecessary materials, clarifying work processes, implementing 5S in the work area, wearing complete APD, focusing on work, checking how workers work, and ensuring equipment is in good condition.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139312675","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}
The number of students who increase every year has an impact on increasing traffic usage, and traffic conditions have a negative impact on the less than optimal operation of existing facilities, such as on-street parking lots located in several different places. In this study, the problem is how the transportation route to Palangka Raya University is currently which aims to determine the load of road sections based on the shortest route taken by a vehicle from the starting point to Palangka Raya University. Data collection is done by distributing online questionnaires, namely via google form, the data obtained is processed with Microsoft excel with descriptive analysis method. Based on the results obtained, the route choice on Jalan Rajawali is dominated by the route Jalan Badak III-Jalan Lele-Jalan Tingang-Jalan Bukit Kaminting 89%, on Seth Adji road, namely the route Jalan Nyai Undang - Jalan RTA Milono - Jalan Raden Saleh - Jalan G. Obos - Jalan Sultan Hasannudin. Obos - Jalan Sultan Hasannudin - Jalan Yos Sudarso as much as 69%, on Jalan Ahmad Yani, namely the route Jalan Sulawesi - Jalan A.Yani - Jalan Di Panjaitan - Roundabout Besar Palangka Raya - Jalan Yos Sudarso 81%, and on Jalan RTA Milono, namely the route Palangka Raya Bird Roundabout - Jalan Temanggung Tilung - Jalan G.Obos - Jalan Galaxy Raya - Jalan Yos Sudarso 81%. From the results it can be concluded that the route choice factor based on the shortest travel distance affects students in choosing transportation routes.
每年增加的学生人数对交通使用量的增加产生了影响，而交通状况对现有设施（如位于多个不同地点的路边停车场）的优化运行产生了负面影响。在本研究中，问题是目前通往巴兰卡拉雅大学的交通路线如何，其目的是根据车辆从起点到巴兰卡拉雅大学的最短路线来确定路段的负荷。数据收集是通过在线问卷（即谷歌表格）进行的，获得的数据使用 Microsoft excel 进行处理，并采用描述性分析方法。根据所获得的结果，在拉贾瓦利路（Jalan Rajawali）上，选择巴达三世路（Jalan Badak III-Jalan Lele-Jalan Tingang-Jalan Bukit Kaminting）路线的人占 89%，在塞斯阿吉路（Seth Adji road）上，选择尼艾翁当路（Jalan Nyai Undang）-米洛诺路（Jalan RTA Milono）-拉登萨利路（Jalan Raden Saleh）-奥博斯路（Jalan G. Obos）-苏丹哈桑努丁路（Jalan Sultan Hasannudin）的人占 89%。奥博斯--苏丹哈桑努丁--约苏达索路高达 69%，艾哈迈德亚尼路，即苏拉威西路--亚尼路。Yani--Jalan Di Panjaitan--Besar Palangka Raya 环岛--Jalan Yos Sudarso 的 81%，而在 RTA Milono 路，即 Palangka Raya Bird 环岛--Jalan Temanggung Tilung--Jalan G.Obos -Jalan Galaxy Raya -Jalan Yos Sudarso 的 81%。从结果可以得出结论，基于最短旅行距离的路线选择因素影响了学生对交通路线的选择。
{"title":"Analisis Penggunaan Metode All or Nothing Assignment dalam Mengestimasi Rute Transportasi Menuju Universitas Palangka Raya","authors":"Putri Elicabeth Manalu, Sutan Parasian Silitonga, Desriantomy Desriantomy","doi":"10.32672/jse.v8i4.6897","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6897","url":null,"abstract":"The number of students who increase every year has an impact on increasing traffic usage, and traffic conditions have a negative impact on the less than optimal operation of existing facilities, such as on-street parking lots located in several different places. In this study, the problem is how the transportation route to Palangka Raya University is currently which aims to determine the load of road sections based on the shortest route taken by a vehicle from the starting point to Palangka Raya University. Data collection is done by distributing online questionnaires, namely via google form, the data obtained is processed with Microsoft excel with descriptive analysis method. Based on the results obtained, the route choice on Jalan Rajawali is dominated by the route Jalan Badak III-Jalan Lele-Jalan Tingang-Jalan Bukit Kaminting 89%, on Seth Adji road, namely the route Jalan Nyai Undang - Jalan RTA Milono - Jalan Raden Saleh - Jalan G. Obos - Jalan Sultan Hasannudin. Obos - Jalan Sultan Hasannudin - Jalan Yos Sudarso as much as 69%, on Jalan Ahmad Yani, namely the route Jalan Sulawesi - Jalan A.Yani - Jalan Di Panjaitan - Roundabout Besar Palangka Raya - Jalan Yos Sudarso 81%, and on Jalan RTA Milono, namely the route Palangka Raya Bird Roundabout - Jalan Temanggung Tilung - Jalan G.Obos - Jalan Galaxy Raya - Jalan Yos Sudarso 81%. From the results it can be concluded that the route choice factor based on the shortest travel distance affects students in choosing transportation routes.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139313081","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}
Abdurrahman Juret, Yanuar Pandu Negoro, H. Hidayat
This study aims to analyze customer satisfaction as a foundation in designing marketing strategies for shredded fish products in Babonsenyum MSMEs. The methods used involve SERVQUAL (Service Quality) and SWOT analysis (Strengths, Weaknesses, Opportunities, Threats). In the SERVQUAL method, service quality dimensions such as product reliability, speed of service, responsiveness to customers, communication, and physical aspects of the product are evaluated. The results of this method allow identifying gaps between customer expectations and perceptions of service, helping to improve the quality of products and services. Furthermore, the SWOT analysis identifies the internal strengths and weaknesses of Babonsenyum MSMEs as well as opportunities and threats from the external environment. Babonsenyum MSME customer satisfaction based on a perception value of 4.05, expectations of 4.38 with a positive gap value of 1.00 it can be seen that the expectation value exceeds the perception value with positive results. So it is felt that customer satisfaction is quite good. Recommendations for proposed improvements to improve supporting factors for customer satisfaction and company performance are to: Maintain product excellence in order to compete with similar competitors, maintain good relationships with raw material suppliers, maximize online sales so that other costs can be met. The results of these two methods help Babonsenyum MSMEs develop more effective marketing strategies and increase customer satisfaction, focusing on improving the quality of products, services, and utilizing existing opportunities.
{"title":"Analisis Kepuasan Pelanggan Produk Abon Ikan di UMKM Babonsenyum dengan Metode SERVQUAL dan SWOT","authors":"Abdurrahman Juret, Yanuar Pandu Negoro, H. Hidayat","doi":"10.32672/jse.v8i4.6917","DOIUrl":"https://doi.org/10.32672/jse.v8i4.6917","url":null,"abstract":"This study aims to analyze customer satisfaction as a foundation in designing marketing strategies for shredded fish products in Babonsenyum MSMEs. The methods used involve SERVQUAL (Service Quality) and SWOT analysis (Strengths, Weaknesses, Opportunities, Threats). In the SERVQUAL method, service quality dimensions such as product reliability, speed of service, responsiveness to customers, communication, and physical aspects of the product are evaluated. The results of this method allow identifying gaps between customer expectations and perceptions of service, helping to improve the quality of products and services. Furthermore, the SWOT analysis identifies the internal strengths and weaknesses of Babonsenyum MSMEs as well as opportunities and threats from the external environment. Babonsenyum MSME customer satisfaction based on a perception value of 4.05, expectations of 4.38 with a positive gap value of 1.00 it can be seen that the expectation value exceeds the perception value with positive results. So it is felt that customer satisfaction is quite good. Recommendations for proposed improvements to improve supporting factors for customer satisfaction and company performance are to: Maintain product excellence in order to compete with similar competitors, maintain good relationships with raw material suppliers, maximize online sales so that other costs can be met. The results of these two methods help Babonsenyum MSMEs develop more effective marketing strategies and increase customer satisfaction, focusing on improving the quality of products, services, and utilizing existing opportunities.","PeriodicalId":17758,"journal":{"name":"Jurnal Serambi Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139313524","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}
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