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All Journal Jurnal Teknologi Industri Pertanian
Afifah Nur Arfiana
Teknik Industri Pertanian, Fakultas Teknologi Pertanian, Institut Pertanian Bogor
Agriculture, Biological Sciences & Forestry Engineering Industrial & Manufacturing Engineering

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Model Perencanaan Agregat untuk Sistem Produksi Two-Stage pada Industri Pangan dengan Bahan Perishable Afifah Nur Arfiana; Taufik Djatna; Machfud Machfud
Jurnal Teknologi Industri Pertanian Vol. 31 No. 1 (2021): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24961/j.tek.ind.pert.2021.31.1.34

Abstract

Aggregate planning is one of the most important activities of operations management for a competitive supply chain. Aggregate planning balances supply and demand during the planning time horizon. Aggregate planning in a food industry with perishable goods characteristics is a common problem. Mostly, studies on aggregate planning are only concerned with single product and single-phase production processes. This paper proposes a two-stage aggregate planning model that can be applied in the food industry with perishable goods characteristics. The two stages of the production process consist of processing raw materials into intermediate products and processing intermediate products into final products by implementing postponement or intermediate product storage. Processing of raw materials into intermediate materials is expected to solve the problem of material deterioration rate. The aggregate planning model uses a mathematical model approach and is solved by using Goal Programming. Based on the results of model verification using hypothetical data, the aggregate planning model can be applied to the food industry which implements a two-stage production system. [Keywords: aggregate planning, two-stage production system, perishable goods, modelling]
Produksi Biodisel Berbasis Minyak Nabati Menggunakan Aspen HYSYS Firda Dimawarnita; Afifah Nur Arfiana; Sri Mursidah; Syarifah Rohana Maghfiroh; Prayoga Suryadarma
Jurnal Teknologi Industri Pertanian Vol. 31 No. 1 (2021): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24961/j.tek.ind.pert.2021.31.1.98

Abstract

Biodiesel is a mono-alkyl ester derived from fatty acids that produced from vegetable oil or animal fat. It is known to be environmentally friendly, does not pollute the air, easily biodegradable, and can be renewed. Therefore, biodiesel has great prospects to be developed in overcoming the limited oil production. Esterification of fatty acids contained in vegetable oil is one way to produce biodiesel. Then, transesterification process separates glycerin from vegetable oil. Based on SNI 7182: 2015, the minimum yield standard for biodiesel is 96.5%. That high yield standard is a challenge in designing the biodiesel production process. In addition, the yield optimization process generally inflicts higher costs and energy. Therefore we need a biodiesel production process design for optimization. Optimization process must consider the composition of the material, the type of reaction, the type of reactor, and the material stream in order to produce the higher yield of biodiesel. This paper aims to optimize biodiesel production through process simulation. The expected biodiesel product is methyl oleate (C19H36O2) with triolein (C57H104O6) as feed. Simulations were carried out using the HYSYS software for three different scenarios. The simulation results are expected to provide an overview of the design of the biodiesel production process that can meet the yield standard and energy efficiency. Based on the three simulated scenarios, the 3rd scenario was chosen as the best biodiesel production process with a yield of 96.5%. In addition, the heat exchanger is used to help reduce the energy requirement from outside the system. [Keywords: biodiesel, production optimization, vegetable oil, hysys
Co-Authors Firda Dimawarnita Machfud Machfud Sapta Raharja Sri Mursidah Syarifah Rohana Maghfiroh Taufik Djatna