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MENGHITUNG RENDEMEN BIODIESEL DARI MINYAK JELANTAH HASIL PENGGORENGAN ABON CAKALANG Momongan, Alfin Mario; Ludong, Daniel P.M.; Pangkerego, Freeke
COCOS Vol 1, No 6 (2017)
Publisher : COCOS

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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
IRIGASI HEMAT AIR PADA PADI LOKAL DENGAN VARIASI KETEBALAN TANAH OLAH MENGGUNAKAN POLA TANAM SRI (SYSTEM OF RICE INTENSIFICATION) Ludong, Daniel P.M.; Ai, Nio Song
EUGENIA Vol 22, No 2 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.22.2.2016.12960

Abstract

ABSTRACT   The objective of this research was to evaluate the vegetative development in 3 North Sulawesi local rice varieties (Superwin (A), Temo (B) dan Burungan (C)) as a response to the thickness variation of cultivated soil layer combined with irrigation deletion. This research was conducted in the glasshouse using polyvinyl chloride (PVC) column (500 mm height, 125 mm diameter) as pots. The treatments consisted of 3 variations of cultivated soil layer, i.e. 18, 24 and 30 cm and the clay hardpan was placed below each of the cultivated soil layers. The level of irrigated water and the amount of the fertilizer were applied following the method of SRI (System of Rice Intensification). The results showed that reducing the thickness of cultivated soil layer to 18-24 cm saved the water as much as 6.15-8.12 L (29.7-39.2%) per pot compared with 30 cm thickness of soil layer in Burungan. Comparing with the 24 cm soil layer thickness, the treatments of 18 cm thickness saved 6.92 L (23.42%) and 5.77 L (18.32%) water, respectively in Superwin and Temo. Keywords: efficient irrigation, North Sulawesi local rice, System of Rice Intensification
PENENTUAN MUTU BRIKET BIOARANG DARI BAHAN BAKU LIDI IJUK DAN SERUTAN KAYU * Ngajow, Gebbi Y.; Ludong, Daniel P.M.; Pangkerego, Freeke; Rantung, Ruland A.
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
Smart Agricultural System in Greenhouse based on Internet of Things for Lettuce (Lactuca sativa L.) Bonde, Grey Mart; Ludong, Daniel P.M.; Najoan, Meicsy E.I
Jurnal Teknik Elektro dan Komputer Vol 10, No 1 (2021): Jurnal Teknik Elektro dan Komputer
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35793/jtek.10.1.2021.31982

Abstract

Abstract — Indonesian Agricultural sistem for vegetable still using a conventional method. However, conventional method is having a problem, which is  weather.  Indonesia’s weather condition is going uncertain because the global warming effect. Uncertain weather cause plant’s growth agitated. Greenhouse is one of the human’s innovation to keep and increase plant  growth.  This research using IoT based smart system in greenhouse. Greenhouse was built to create new environment to separated from the outside environment. Sensors are applied to monitor the environment. In greenhouse, writer applied actuator to maintain the environment at the optimal condition. The condition inside greenhouse can be seen  in website. The main purpose of this research are to design, build, and control the IoT-based greenhouse for best condition of lettuce’s growing climate. This research using experimental method on development project. The micro-climate range that the researcher using for this research are at 22-30 Celcius degree for the temperature, 90% for the humidity, and 100 LDR’s scale for  the  light intensity. By applying IoT based smart system inside greenhouse, plant growth can be seen clearly in the website. The condition of the environment can maintain at the optimal contition for the plant growth, with the manual or automatical control. With this device, the plant growth  can maintain at the best condition and it will produce plant that grow at the best condition
UJI TEKNIS TRAKTOR KUBOTA TIPE M9540 PADA PENGOLAHAN LAHAN KERING DI KELURAHAN WAILAN, KOTA TOMOHON Assa, Gabriela A.; Rantung, Ruland; Molenaar, Robert; Ludong, Daniel P.M.
COCOS Vol 5, No 4 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i4.6586

Abstract

ABSTRACTSoil tillage aims to create physical soil condition suitable for plant growth. It does that by improving soil water and air association as well as water movement in soil. Mechanical soil tillage requires lots of energy; therefore, good tillage practice needs to carefully consider a proper soil condition in order to get the required result. A technical test to Kubota tractor type M9540 with 95 horsepower was done in this research, as it has never been done before in specific soil condition, topography, and climate of the North Sulawesi. The objectives of this research were to measure aspects of effective field capacity and field efficiency, fuel consumption, to calculate tillage cost and tractor Break Even Point. Soil tillage results were also evaluated by measuring soil bulk density, water infiltration and moisture content before and after tillage. The test was done by cultivating the dry land through performing primary and secondary tillage, each was carried out in three replications. The results show that average effective field capacity for first primary tillage was 1.55 m2/second (0.56 ha/hour), second primary tillage was 1.75 m2/second (0.63 ha/hour), and the secondary tillage was 2.72 m2/second (0.98 ha/hour) with average field efficiency was 77.40%, 80.72%, and 56.17% respectively.Total time to complete the first and second primary tillage was 0.11 hour and 0.10 hour, with diesel fuel consumption of 64.17 liters/ha, and 55.44 liters/ha. The secondary tillage required 0.06 hour and fuel consumption of 28.72 liters/ha.The primary and secondary tillage were found to influence the soil moisture content, bulk density, and rate of water infiltration. Tillage basic cost is calculated as Rp.1.765.683 /ha to result a hire charge of Rp. 1.942.251 /ha, and the tractor break-even point was found to be 552 ha/year.Keywords: Tractor, tillage