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All Journal Jurnal Rekayasa Sistem Industri SPEKTRUM INDUSTRI
Silvia Silvia
Universitas Islam Negeri Sultan Syarif Kasim Riau
Industrial & Manufacturing Engineering

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Pemanfaatan Limbah Plastik dan Kaca sebagai Pembuatan Bata Plastik yang Ramah Api Harpito Harpito; Ismu Kusumanto; Yori Bunga Ananda; Novirza Novirza; Silvia Silvia
Jurnal Rekayasa Sistem Industri Vol. 10 No. 1 (2021): Jurnal Rekayasa Sistem Industri
Publisher : Universitas Katolik Parahyangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (499.25 KB) | DOI: 10.26593/jrsi.v10i1.3995.101-112

Abstract

In order to preserve the environment from plastic waste, various ways can be done, one solution is to make a brick made from plastic that is the secret fire and use glass as its mixture. Fire-friendly here using the distillation tool is done so that the oil content of the plastic is separate and the plastics produced are more friendly to the flame. The experimental design by using RAL was used to determine the composition of brick making. In determining the composition is fitting done with a test object, a cube-shaped test object with a size of 5x5x5 cm. Maximum of absorbent brick power is 20%, from the processing result then in the sample can be 4th with water absorption of 0.74%. Based on data processing, the total plastic weight for plastic bricks is 12.77%. Then based on the observations that have been made known at a time 5 minutes 23 seconds. The bricks are not distilled, then the brick that has been distilled melted at a time of 17 minutes 40 seconds. Then based on the calculation result can be cost of raw materials amounting to Rp 51,000, labor cost of Rp 38,461, and the overhead variable fee is Rp 25,000. So the total cost per day of Rp 114,461. Then based on 5% margin, brick sale price of Rp 3,000/seed and breakeven point determination or break event point plastic brick 43 seed, and the point of the scan is Rp 99,350.6493.
ANALISIS TEKNO EKONOMI PEMANFAATAN SAMPAH PASAR SEBAGAI BAHAN PEMBUATAN PUPUK ORGANIK CAIR Dewi Diniaty; Jaka Prindra illahi; Wresni Anggraini; Ekie Gilang Permata; Silvia Silvia
Spektrum Industri Vol 18, No 1: April 2020
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v18i1.15821

Abstract

The Selasa Panam Market is a traditional market where there are many piles of garbage around the market area. This pile of garbage can cause environmental pollution which causes unpleasant odors. This study aims to manufacture liquid organic fertilizer made from market waste by adding EM4, Yeast, and Whey Kefir, testing the nutrient content of N, P, K in liquid organic fertilizer, analyzing the economic techno of liquid organic fertilizer based on HPP and BEP. This research using a completely randomized design method is used to determine the treatment of making liquid organic fertilizer and variable costs to calculate the cost of production (HPP). Then the BEP method to determine when the break-even point will be reached. Success has been made in the manufacture of liquid organic fertilizers made from market waste giving EM4, Yeast, and Whey Kefir bacteria. N, P, K nutrient content test results obtained sample C has the best results with N values of 0.4129%, P 0.1223%, and K 0.2101%. HPP on organic fertilizer obtained was Rp. 5,222 / liter and BEP obtained as much as 321 liters for a year so that the BEP can be reached within 71 days. With this research can be found knowledge about the use of market waste as an ingredient for making liquid fertilizer and making products that can be used by others.
Co-Authors Dewi Diniaty Ekie Gilang Permata Harpito Harpito Ismu Kusumanto Jaka Prindra illahi Novirza Novirza Wresni Anggraini Yori Bunga Ananda