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All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Agricultural Biosystem Engineering
Wicaksono, Dionisius Dwi
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Agriculture, Biological Sciences & Forestry Automotive Engineering Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Materials Science & Nanotechnology

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Uji Performansi Mesin Penepung Tipe Palu (Hammer Mill) Untuk Penepungan Hotong (Setaria Italica L.) Sutejo, Agus; Kurniasari, Rahma Sholihah; Wicaksono, Dionisius Dwi
Jurnal Agricultural Biosystem Engineering Vol 2, No 2 (2023): June 2023
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v2i2.7464

Abstract

Indonesia has a high source of biodiversity but consumption patterns still depend on rice as a basic food needs containing carbohydrates. Food diversification needs to be done to achieve food diversification, especially plants that can grow on dry land such as hotong plants. Hotong is a plant that grows a lot in Indonesia but still has postharvest constraints on the flouring process. Therefore, the study was conducted to determine the performance of hammer mill machine and compare with disc mill. The research was conducted in PT. Daud Teknik Maju Pratama in July 2022 with materials used 500 grams each on each test. The rotational speed tested on the hammer machine is 2887 rpm, 3608 rpm, and 4330 rpm, while the disc mill machine is 4485 rpm. The test was carried out one pass with three repetitions for each sample and the quality of flouring was tested using an 80 mesh. Performance test results showed the highest capacity of using hammer mill machine 4330 rpm, while the highest yield and the lowest scattered shrinkage using disc mill. Furthermore, the flour milling using both machines sifted using mesh 80 and flour that passes more produced from milling hammer mill machine 4330 rpm of 45.111%. The power required by the hammer mill machine to milling 500 grams of hotong is 5107,34 watts.Keywords: disc mill, hammer mill, hotong, milling
Performance Test of Hotong Seed Billing Machine (Setaria italica (L.) P. Beauv) Abrasive Roll Type with Grinding Stone Sutejo, Agus; Abdillah, Kemas Asror; Sucahyo, Lilis; Wicaksono, Dionisius Dwi; Pramuhadi, Gatot
Jurnal Agricultural Biosystem Engineering Vol 2, No 3 (2023): September 2023
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v2i3.8059

Abstract

Indonesia has a lot of diversity, one of which is in food. Carbohydrates are basic food needs that must be met, in Indonesia there is the potential for various alternative foods. One of the alternative food ingredients producing carbohydrates is hotong. Hotong is a plant that is often found in Indonesia but has post-harvest constraints, namely in the sowing process. Therefore, research was conducted to determine the performance of an abrasive roll type grinding machine with the characteristics of hotong seeds. The research was conducted at PT. Daud Teknik Maju Pratama in November 2022. The treatment of hotong seeds that are sprayed as many as three passes with various levels of rpm speed, namely 806, 940, and 1128 rpm and carried out three repetitions at each rpm. The performance test results of the crushing machine showed the highest scattered capacity and shrinkage at a rotating speed of 1128 rpm, the highest yield and effectiveness of skin separation at a speed of 806 rpm, while at the highest polishing quality at a speed of 940 rpm. Rotating speed affects the sowing results, the faster the engine rotation speed, the quality and capacity of the sowing will increase. In addition, the tilt angle of the machine also affects the result of the sowing capacity. The terminal velocity value is influenced by the weight of the hotong seeds, the higher the weight on the sample, the higher the terminal velocity value obtained. Keywords:  Abrasive Roll, Hotong, Polisher.
Performance Evaluation of Ball Mill Type Grinding Machine for Particle Size Reduction of Porang Glucomannan Crystals Sutejo, Agus; Wicaksono, Dionisius Dwi; Pramuhadi, Gatot
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.165-177

Abstract

A wide gap in the price of glucomannan flour and porang tubers leads to develop a machine to process tubers into fine flour with good performance. The purpose of this research was to analyze and determine the performance of a ball mill machine on the flour yield as well as its quality. Research was conducted at PT Daud Teknik Maju Pratama from January – May 2023. Testings were carried out under two treatment factors, namely rotational speed (21.2 and 41.6 rpm) and processing time (0.5 h, 1.0 h, 1.5 h, 2 h). The test was carried out using 150 g sample for each treatment with three replications. The response variables included capacity, percentage of size reduction, material losses, engine power, and flour quality. The results showed that the optimum capacity of the ball mill machine was 12.5 kg/batch. The highest percentage of size reduction was 96.27% and the lowest material loss (3.73%) were obtained at 21.2 rpm for 0.5 h of miling process. Treatment with 41.6 rpm for 2 h produced the best flour quality with moisture content of 11.87% and fine flower yield of 63.97% passing through 100-mesh sieve. The power requirements of electric motors at 21.2 rpm and 41.6 rpm were 0.8063 kW and 0.9101 kW, respectively. The best milling capacity (1.560 g/min) was resulted at rotational speed of 62.27% CS. The ball mill machine showed superior results as compared to a disk mill which was not able to grind the glucomannan crystals up to 100-mesh size.Keywords: Ball mill, Glucomannan flour, Performance test, Porang, Refining.
Co-Authors Abdillah, Kemas Asror Agus Sutejo Gatot Pramuhadi Kurniasari, Rahma Sholihah Sucahyo, Lilis