Journal Teknos 2021-05-04T11:06:33+00:00 Maria Ulfah Open Journal Systems <p>Teknos merupakan jurnal untuk menyebarluaskan hasil penelitian atau pemikiran bahasa. Hasil penelitian yang dipublikasikan dalam jurnal ini difokuskan pada bidang Teknik Elektronika, Teknik Mesin, Teknik Industri, Teknik Kimia dan Teknologi Rekayasa Komputer dan Jaringan. Dosen, mahasiswa, dan peneliti bahasa diharapkan dapat memanfaatkan jurnal ini untuk berbagi pengetahuan hasil penelitian atau pemikirannya.</p> Pemanfaatan Tempurung Kelapa sebagai Katalis pada Sintesa Biodiesel dari Minyak Jelantah 2021-05-04T11:06:32+00:00 Ratna Sari Ratna Dewi Lukma Hakim <p><em>The use of coconut shell as a catalyst in the esterification reaction of used cooking oil (UCO) has been investigated. In this study, four types of coconut shell-based catalysts were developed by different activation method; application of carbonization process, and impregnation by concentrated sulfuric acid or KOH solutions. The morphology of the four catalysts was different. The catalytic performance test results showed that the highest free fatty acid (FFA) conversion was achieved in the esterification of UCO using a catalyst that was prepared without carbonization and impregnated by KOH (symbolized by KOH-C non). By using a non KOH-C catalyst, the effects of esterification parameters were studied, including the methanol / oil ratio: (</em><em>1:</em><em>1.</em><em>3</em><em>; </em><em>1:1,5 and 1:1,8</em><em>), the solid catalyst / oil ratio (0.4 - 2.4%) b/v), and reaction times (1, 3, and 5 hours). The maximum 84.26% FFA conversion was obtained from UCO (initial FFA content of 2.76%) in the esterification conditions of oil / methanol volume ratio of 1: 1.5 v/v, catalyst amount of 1.6% b of the oil and 1 hour of reaction time.</em></p> 2021-05-03T03:58:24+00:00 Copyright (c) 2021 Ratna Sari, Ratna Dewi, Lukma Hakim Pengukuran Kapasitas Produksi Kandang Batere untuk Memenuhi Permintaan Konsumen 2021-05-04T11:06:33+00:00 Ayu Bidiawati Lestari Setiawati Mutia Pratiwi <p><em>The metal industry is a manufacturing company that produces metals and plastics with its the main product being battery cage. In its production system, the company applies the concept based on orders, </em><em>where each product will be produced if there is demand from consumers. The study was conducted in the production process of 4 types of products, namely mini battery cage, standard battery cage, floor inserts and cage boundaries. When carrying out the production process, the company experienced obstacles in meeting consumer demand. The first obstacle that occurs is the number of consumer demand so the company is forced to reject several requests that come and the second obstacle is the delay in product completion. This is because the company has not yet determined the available production capacity. Therefore the study was conducted to calculate the capacity available and the capacity needed to produce all types of products. To calculate RCCP (Rought Cut Capacity Planning) the CPOF (Capacity Planning Overall Factor) method is used. Based on the results of these calculations, the results obtained are the capacity needed is much higher than the available capacity. The capacity needed by the company is 43,234.37 hours / month while the available capacity owned by the company is only 6729 hours / month. From the results above, the capacity available at the company is only able to meet 15.56% of the required capacity.</em></p> 2021-05-03T05:22:15+00:00 Copyright (c) 2021 Ayu Bidiawati, Lestari Setiawati, Mutia Pratiwi