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Freeke Pangkerego
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Agriculture, Biological Sciences & Forestry

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KAJIAN PEMBUATAN BRIKET ARANG DARI LIMBAH TEMPURUNG PALA ( Myristica fragrans Haitt ) Erick Manialup; Freeke Pangkerego; Daniel Ludong; Herry F. Pinatik
COCOS Vol. 6 No. 14 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i14.8666

Abstract

ABSTRACT   Charcoal briquettes is solid alternative fuel for oil. This research aimed to evaluate charcoal product from three types of carbonization kiln that used nutmeg shell waste and examine the process of making charcoal briquettes from nutmeg shell waste. The observed characteristics of charcoal briquettes from nutmeg shell waste were  calories value, ash content, and water content. The benefit of this research was producing alternative fuels from renewable agricultural waste into economically valuable products as wells as reducing environmental pollution. This product was charcoal briquettes that could be used for household requirement, small food and beverage industry and canteen.  Key Words: Charcoal Briquet, Nutmeg shell, Carbonization kiln
KAJIAN PEMBUATAN BRIKET BIOARANG DARI LIMBAH KULIT DURIAN DENGAN KOMBINASI SERUTAN KAYU dan TEMPURUNG KELAPA Robert P. Langkai; Freeke Pangkerego; Herry F. Pinatik
COCOS Vol. 6 No. 16 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i16.9406

Abstract

ABSTRACT The objectives of this research is to learn the proccess of making charcoal and the yield of charcoal from the waste of durian’s leather, wood’s savings, coconut shell, the combination of waste durian’s leather and wood shavings (1:1), the combination of weste durian leather and coconut shell (1:1), the combination of waste durian leather and wood shavings (2:1) and the combination of waste durian leather and coconut shell (2:1) that is the testing of briquettes burned power and residual ash which has burnt-out. This research is use complete Random Plan Method, to analyze the yield of charchoal and the time of making charcoal, briquettes burned power, the time of heating 1 litre water till it’s boil and residual ash of briquettes which has burnt-out. The result of research show that the average time of making charcoal process of waste durian leather and coconut shell is the same that is 960 seconds, while making charcoal on shavings wood has the average time 980 seconds. This case is also given the bright difference towards the result of yield charcoal. The result of briquettes burned power on seven treatment shows that the briquette of waste durian leather, coconut shell, the combination of waste durian leather and coconut shell (1:1) and the combination of waste durian leather with coconut shell (2:1) is the best because it has the quick average in heating 1 litre water that is 1140 seconds, while the quick average of burnt-out on C treatment or coconut shell briquettes that is 208,800 seconds and has briquettes rendual ash which has burnt-out is smallest that is 2.77%.  Keywords : Aktif charcoal briquettes, durian lether , shavings wood and coconut  shell.
PENENTUAN MUTU BRIKET BIOARANG DARI BAHAN BAKU LIDI IJUK DAN SERUTAN KAYU * Gebbi Y. Ngajow; Daniel P.M. Ludong; Freeke Pangkerego; Ruland A. Rantung
COCOS Vol. 7 No. 6 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i6.13884

Abstract

ABSTRACTThis study aimed to evaluate the briquet quality made of palm leaf-rib from sugar palm plant and wood shavings based on the water content, ash content and briquet burning capacity as well as to determine the best quality of briquet based on the water and ash content.The results of this descriptive study showed that the highest water content was observed in the palm leaf-rib briquet (12,68 %) and the lowest was in the briquet made of 66,67 % palm leaf-rib and 33,33 % wood shavings (2,58 %). The highest ash content was in the briquet made of 100 % wood shavingsKeywords ; briquet, palm leaf-rib, sugar palm plant, wood shavings, quality
MENGHITUNG RENDEMEN BIODIESEL DARI MINYAK JELANTAH HASIL PENGGORENGAN ABON CAKALANG Alfin Mario Momongan; Daniel P.M. Ludong; Freeke Pangkerego
COCOS Vol. 9 No. 1 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i6.16697

Abstract

ABSTRACTCooked oil is a type of oil obained from frying remains of various household consumption. This oil contains free fatty acids produced by the reaction of oxdation and hydrolisis during frying, so that this oil is a house hold waste. UD. Trikora is a company that produced skipjack shredded meat and uses cooking oil for frying. The utilization of this cooked oil is an alternative problem solving of waste oil disposal and public health. The survey result indicated that this cooked oil was placed in the gallons and some of them was taken by the employers. Processing of this cooked oil into biodiesel as an alternative fuel diesel engine, is an altenative problem solving. Based on these reasons, a descriptive study was conducted to evaluate the biodiesel rendement of this cooking oil. The result showed that 78,8 % biodiesel was obtained from transesterification reaction of 500 mL cooked oil using 2 g NaOH and 100 mL ethanol as solvent.Keywords :Rendement, Wrapping oil, Transesterification
MODIFIKASI DAN UJI TEKNIS ALAT PEMBERSIH BIJI JAGUNG DENGAN KOMBINASI SISTEM AYAKAN BERGOYANG DAN HEMBUSAN ANGIN Kahar Drakel; Freeke Pangkerego; Dedie Tooy
COCOS Vol. 10 No. 3 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.22199

Abstract

Abstract Corn (Zea mays L) is one of the cereal plants that grows almost all over the world and is classified as a species with large genetic variability. In Indonesia corn is the second staple food after rice. Besides that, corn can be used as animal feed ingredients and industrial raw materials (Fadhullah Muhammad 2016). Sieving is the separation of the mixture of solid particles that have various sizes of material using a sieve. The sieving process is also used as a cleaning tool, the separator of waste which is different in size from the raw material. The purpose of this study was to modify and technically test the corn seed cleaning system using the electro motor sway and different air flow speeds using a fan. This research has been carried out in the Agricultural Engineering Workshop, Agriculture Technology Department of the Faculty of Agriculture Unsrat for 3 months from May to July 2018, including the making of sieving tools, implementation of sieving experiments and analysis of research data. This study includes the modification and technical testing of corn seed cleaning equipment with a combination of swaying and wind blowing sieve systems, using 3 different air flow rates from different fans with 3 (three) replications, namely: 1. Air flow velocity 1.3 m / s ( A), 2. Air flow velocity 2.1 m / s, (B), and 3.Air flow velocity of 3.5 m / s (C). The speed of air flow in this study is not the same level, only adjusting the speed of the fan (fan) made by the factory  Keywords: Modification of tools, sway sieve system, wind gusts
KAJIAN UJI KINERJA ALAT TANAM KEDELAI IRF-01 Isak T. Sulle; Ruland A. Rantung; Freeke Pangkerego
COCOS Vol. 10 No. 7 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i5.25025

Abstract

ABSTRACT       This study aims to design and make a soybean planting tool with aspects that need to be considered such as planting conditions, number of seeds per planting hole, planting distance, seed conditions when planted, and planting efficiency. The expected outcome of this research is that it can produce soybean planting tools that can be used by farmers and academics to support government programs in increasing national soybean production.      The process of designing and manufacturing tools was carried out at the Agriculture Technology laboratory and planting or testing the performance of the tools carried out in the Unsrat village of Wailan experimental village in North Tomohon District. This research began from April 8 to May 20 2019 for the manufacture of tools and the planting process was carried out on May 22, 2019 using a planting tool that had been made with a hand tractor as a towing force and 3 weeks of observation of growing soybeans. The soybean varieties grown are Dega 1 soybean variety which is the best variety according to 2017 R & D data.      Data obtained after the process of planting and observing soybeans for 3 weeks was in the form of field efficiency data of 81.57%. with the percentage of seeds growing 61.59% and the percentage of seeds not growing 38.41%. The total percentage of seed growth is closely related to the performance of the tool because the tool still has a deficiency in the metering device that has a gap with the hopper resulting in the seeds entering the gap breaking and unable to grow when planted.  Keywords : Soybean planting tools, Spacing, Dega 1, Growing seed percentage, Field efficiency, Metering device
UJI KINERJA RICE TRANSPLANTER ISEKI PC4 DI DESA KOPI KECAMATAN BINTAUNA Fadlan Radjiku; Freeke Pangkerego; Frans Wenur
COCOS Vol. 10 No. 7 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i5.25026

Abstract

ABSTRACT Iseki PC4 Rice Transplanter is a rice paddy planting tool provided by the North Bolaang Mongondow district government assistance to farmers to help with the planting process so that it does not require a lot of human labor and can save on planting costs. However, until now the existing tools have not been used because farmers cannot operate them. For this reason, it is necessary to study the operation and performance of the tools so that farmers can use these tools and provide benefits. This study aims to determine the uniformity of seedling plugging, calculate field efficiency, and determine fuel consumption from the use of Iseki PC4 Rice Transplanter tools. The results of testing using Iseki PC4 Rice Transplanter obtained an average seed plugging uniformity of 86.73%, an average field efficiency of 78.58% and fuel consumption of 8.96 liters / ha. Keywords : Iseki PC4 Rice Transplanter, filed efficiency.
UJI KINERJA ALAT PEMBUAT ASAP CAIR TEMPURUNG KELAPA TIPE PIROLISIS Adhiyanto D. Sinadia; Dedie Tooy; Freeke Pangkerego
COCOS Vol. 10 No. 8 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i6.25958

Abstract

Abstract This study uses two liquid smoke makers, liquid smoke 1 and liquid smoke 2, with different sizes of volumes of pyrolysis tubes and condenser drums. The volume of the liquid smoke pyrolysis tube 1 was 753,600 cm³ and the condenser drum was 392,500 cm³, while the volume of the liquid smoke pyrolysis tube 2 was 367. 380 cm³ and the volume of the condenser drum was 196. 250 cm³. The purpose of this study is to technically test the performance of the liquid smoke maker 1 and the liquid smoke maker 2 and the rendement of liquid smoke, tar and combustion chamber temperatures during the pyrolysis process. The research method used was an experimental method and analyzed descriptively. The results of the study obtained a liquid smoke yield in liquid smoke 1 by 7.5%, a yield of 0.86% tar and a coconut shell yield of 23%. In liquid smoke tools 2 the liquid smoke yield obtained by 20%, the yield of tar 0.76% and the yield of coconut shell by 27%. The performance of the liquid smoke 1 tool is 0.375 kg / hour, while the performance of the liquid smoke tool 2 is 0.6 kg / hour. The performance of the liquid smoke tool 2 is higher than the liquid smoke tool 1. Keywords : Liquid smoke, tar, coconut shell, performance, yield, pyrolysis
Co-Authors Adhiyanto D. Sinadia Alfin Mario Momongan Daniel Ludong Daniel P.M. Ludong Dedie Tooy Erick Manialup Fadlan Radjiku Frans Wenur Gebbi Y. Ngajow Herry F. Pinatik Isak T. Sulle Kahar Drakel Robert P. Langkai Ruland A. Rantung