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INDONESIA
E-jurnal Agro-Industri Indonesia
Published by Institut Pertanian Bogor
ISSN : 22523324     EISSN : -     DOI : -
Core Subject : Engineering,
Industrial & Manufacturing Engineering
e-JAII Series is a quad-annual national referred journal with the objectives to disseminate, explore, develop, and elucidate the knowledge of engineering design and technology in agro-industrial development issues, to keep practitioners and researchers informed on current issues and best practices, as well as serving as a platform for the exchange of ideas, knowledge, and expertise among academician, technology researchers and practitioners. e-JAII Series provides an opportunity to share detailed insights from different understandings and practices associated with technology. It provides cross-disciplinary exchange of insights and ideas regarding value and practices for dissemination. e-JAII Series will publish your work to national society of practitioners and researchers with interest in technology design and development from a wide variety of agro-industrial sectors.
Arjuna Subject : -
Articles 31 Documents
 1   2   3   4 
ABSTRACT   Productivity improvement is an essential effort  to achieve the optimal utilization of the resoures, particularly in production on the assembly line  of soy sauce (soy filling) in  PT X.  The productivity improvement is based on measuring the OEE (Overall Equipment Effectiveness). OEE is a measurement methods of the production machine effectiveness that involves measurement of the availability rate, performance rate, and quality rate. Through measurement of OEE​​, the potential equipm Taufik Djatna dan Ida Bagus Dharma Yoga santosa
E-jurnal Agro-Industri Indonesia Vol. 1 No. 1 (2012): E-Jurnal Agroindusri Indonesia
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Abstract

ABSTRACT   Productivity improvement is an essential effort  to achieve the optimal utilization of the resoures, particularly in production on the assembly line  of soy sauce (soy filling) in  PT X.  The productivity improvement is based on measuring the OEE (Overall Equipment Effectiveness). OEE is a measurement methods of the production machine effectiveness that involves measurement of the availability rate, performance rate, and quality rate. Through measurement of OEE​​, the potential equipment utilization, identify bottlenecks and track the lossess were monitored. Results of the OEE measurement on assembly line in PT. X indicate a lower level  than optimal results so that the improvement is required  to improve the competitiveness of enterprises. A quantitative model of Particle Swarm Optimization (PSO)  was  ​​modified to improve the productivity and to reduce the productivity cost.   Keywords: productivity improvement, lean production, OEE, Particle Swarm Optimization
ABSTRACT  The cake of jatropha seed as by product generated from in situ transesterification process contains high protein (34,68%) and it is not yet optimally benefited. In this research, the cake of jatropha seed was benefited to produce binderless particle board. The purpose of this research is to produce the particle board from the cake of jatropha seed generated by in situ transesterification process with protein as natural binder. The particle board production was carried out under the fol Sri Lestari dan Ika Amalia Kartika
E-jurnal Agro-Industri Indonesia Vol. 1 No. 1 (2012): E-Jurnal Agroindusri Indonesia
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Abstract

ABSTRACT  The cake of jatropha seed as by product generated from in situ transesterification process contains high protein (34,68%) and it is not yet optimally benefited. In this research, the cake of jatropha seed was benefited to produce binderless particle board. The purpose of this research is to produce the particle board from the cake of jatropha seed generated by in situ transesterification process with protein as natural binder. The particle board production was carried out under the following process condition : jatropha seed cake moisture content (10- 20%), pressing temperature (140-180oC) and pressing duration (8-12 min). The phisycal and mechanical properties of particle board were tested according to JIS A 5908:2003. Jatropha seed cake moisture content, pressing temperature and pressing duration affected the phisycal and mechanical properties of particle board. The density and moisture content of particle board were respectively 0,79-0,91 g/cm3 and 7,07-10,06%. The swelling in water and water absorpsion after 24 hour water soaking were respectively 14,88-30,60% and 51,67-82,93%, and they were not accordance with JIS A 5908:2003. Modulus of Rupture (MOR) and Modulus of Elasticity (MOE) of particle board were not also accordance with JIS A 5908:2003. Their value respectively were 20,04-65,99 kgf/cm2 and 2340,90-5150,25 kgf/cm2. Generally, the phisycal and mechanical properties of particle board were not accordance with JIS A 5908:2003 except for density and moisture content. Keywords : cake of jatropha seed, particle board, in situ transesterification
 ABSTRACT Wastewater Treatment Plant (WWTP) with aerobic processes is required to reduce high organic components of date juice wastewater. Characterization, optimization of operating condition as well as alternative operation of WWTP are required in the process development wastewater treatment, so the output of wastewater that satisfies the environmental quality standards. This study aims to characterize of the WWTP unit's operating conditions, determine of lime dose, optimize aeration time Eko Sawirfi Suprihatin dan Ono Suparno
E-jurnal Agro-Industri Indonesia Vol. 1 No. 1 (2012): E-Jurnal Agroindusri Indonesia
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Abstract

 ABSTRACT Wastewater Treatment Plant (WWTP) with aerobic processes is required to reduce high organic components of date juice wastewater. Characterization, optimization of operating condition as well as alternative operation of WWTP are required in the process development wastewater treatment, so the output of wastewater that satisfies the environmental quality standards. This study aims to characterize of the WWTP unit's operating conditions, determine of lime dose, optimize aeration time, and identife of the alternative treatment. Characterization of the wastewater indicated that all units did not have an optimum operating condition. Characteristics output of the wastewater were COD of 2,344 mg/L, TSS of 135 mg/L, pH of 5.5, and turbidity of 182 FTU, the values did not meet the quality standards. The improvement a dose of lime neutralization at pH 7 is 0.6 g/L. Condition of 24-hour aeration time demonstrated effluent quality: COD of 351 mg/L, TSS of 78 mg/L, pH of 6.3, and turbidity of 92 FTU, which are better than those of aeration time 12 until 20 hours. The high content of COD could be overcome by an anaerobic treatment. Identification of an anaerobic treatment system could potentially produce biogas with yield of 26.46 m3/day.                                                                                                               Key words : wastewater, wastewater treatment plant, anaerobic, environmental quality standards
APPLICATION VEGETABLE OIL AS A COATING ON THE FREEZ SLICES CARROT (Daucus carrota) AND THE QUALITY CHANGES DURING STORAGE Priska Wisudawaty, Sugiarto dan Chilwan Pandji
E-jurnal Agro-Industri Indonesia Vol. 1 No. 1 (2012): E-Jurnal Agroindusri Indonesia
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Abstract

ABSTRACT Carrot is highly perishable commodity due to respiration. This process can decompose the macro molecule into carbon dioxide, water, and other micro molecule. This decomposing will lead to softening of tissue. This damage could be reduced by fast freezing and then stored under frozen. The research was aimed to  know the effect of freezing time and the kind of oil used as coating on color, texture, weight loss and total dissolved solids of the slice carrot during storage. The result of this study showed that oil gave significant effect on the quality of carrot. The best oil for coating was corn oil that gave weight up to 0.06%, total dissolved solid in the range 4 to 6 brix, color of 67 till 69 Hue, violence in between of 1.30 and 3.50 mm/s, and it was favored by consumers even after 54 day storage.                                                                                                                Keywords : coating, frozen carrot, oil
ADVANCED TREATMENT OF FOOD INDUSTRY WASTEWATER BY ELECTROCOAGULATION USING STAINLESS STEEL ELECTRODES Mutiara Windika Gameissa, Suprihatin dan Nastiti Siswi indrasti
E-jurnal Agro-Industri Indonesia Vol. 1 No. 1 (2012): E-Jurnal Agroindusri Indonesia
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Abstract

ABSTRACT   Food industry wastewater contains large amount of organic contaminants that cause water pollution. Approprite techniques for wastewater treatment can reduce the content of pollutants in the wastewater. Electrocoagulation is an alternative for treatment of the wastewater. This technique is pricipally a coagulation process that uses direct current through electrolysis. One of the advantages of this process is no need chemicals adding as coagulant. Electrocoagulation process has been carried out with a batch system on a scale of 1 Liter of wastewater using stainless steel electrodes with effective area of 108.9 cm2. Electrocoagulation has been performed on voltage variation of 9 to 24 Volt and operating time of 30 to 60 minutes. Samples were taken at each variable and analyzed for following parameters pH, TSS, turbidity, color, COD and phosphate concentration. The results showed that the greater voltage and operating time of electrolysis, the greater removal of contaminants in wastewater. Electrocoagulation optimal condition occurs at a voltage of 24 Volt and 60-minute operating time with efficiency TSS removal of 88.02%, turbidity removal of 76.85%, color removal of 77.49%, phospate removal of 100% and COD removal of 77.78%. Keywords: advanced wastewater treatment, electrocoagulation, food industry wastewater
ANALYSIS OF PAPER DEFECT REDUCTION IN PAPER INDUSTRY WITH LEAN SIX SIGMA APPROACH Fika Aras Ardita dan Sukardi
E-jurnal Agro-Industri Indonesia Vol. 1 No. 1 (2012): E-Jurnal Agroindusri Indonesia
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ABSTRACT   The high number of the defective product that occur in each company can affects the quality. PT. X is a company engaged in the pulp and paper product. Lean approach does not allow for waste, in this case is defective product. Product defects that often arise in this  industry are holes paper, dirty paper, folded, size variations and foreign contamination. The purpose of this study is to identify the causative factor in the production department of a product defect based on six sigma phase and the solution  that can be taken to reduce the number of defects in the production department based. The phases of six sigma are define, measure, analyze, improvement and control. The results of calculation of the value of sigma of perforated paper for two months was 3.45 and 3.47. Dirty paper has a sigma value of 4.2 and 4.5. The sigma level indicates that the performance of the productionis above average Indonesian company. The costumer complaint coming into the company for  folded paper, size variations and foreign contamination has decreased from 2010 to 2011. But it has not reached the six sigma target. So that, the company  needs to be  improved using the Lean tool that is  Kaizen Blitz.     Keywords : defective product , paper , six sigma, lean, kaizen blitz
AN ANALYSIS AND DESIGN OF DECISION SUPPORT SYSTEMS FOR SUGAR CANE HARVESTING (CASE STUDY IN PT. RAJAWALI II UNIT PG. JATITUJUH, MAJALENGKA) Aldian Farabi dan Machfud
E-jurnal Agro-Industri Indonesia Vol. 1 No. 1 (2012): E-Jurnal Agroindusri Indonesia
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Abstract

ABSTRACT   PT. Rajawali II Unit PG. Jatitujuh is the company which process sugar canes become first quality Super High Sugar (SHS I). The harvesting of sugar cane has been done on summer in order to gain optimum yield. Daily scheduling of sugarcane has been done in order to fulfill the raw material of factory continously. This scheduling has been done toward the sugarcane field with area of 11.921,56 ha and spread on the 2.418 of swath.  Nowadays, the scheduling of daily harvesting has been decided through Harvesting Forum Meeting(Rapat Forum Tebang) based on age of sugar canes, the highest yield, and subjectively actual condition of sugar canes field. This method is still done manually with separated database system. Axe DSS 1.0 is a support system to make decision in harvesting of sugar canes with real-time refers to modificated T-Score method. The decision support system (DSS) is developed based on Unified Modelling Language (UML) which consists of case diagram, activity diagram, class diagram, and statechart diagram. Axe DSS uses java programing language which consists of 3 sub-system, which are harvesting sample, analysis result, and daily harvesting. Input of this system are data cane planted last year, preface analysis, actual condition of sugar canes fields and factory. Then the data is managed with cane sugar analysis calculation and modify T-Score calculation. While ,the output of this system are sample field, analysis result, and next day harvesting cane schedule. This prototype has several advantages which are faster decision-making, flexible, automatic report printing, and faster data storing and searching compare with manual decision-making.   Keywords: DSS, realtime, scheduling, sugarcane, T-Score, UML
ABSTRACT Production scheduling is an important aspect to support the success of a manufacturing company in achieving the target of production planning and affects the implementation of the production process over a period of time. The amount of idle time in scheduling are considered less effective in the production line and detailed production scheduling becomes a problem to be solved with rearrangment of the daily activities in PT. MDS. Modeling proper scheduling is a means to help develop the Agus Hidayatul Rohman dan Taufik Djatna
E-jurnal Agro-Industri Indonesia Vol. 1 No. 1 (2012): E-Jurnal Agroindusri Indonesia
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ABSTRACT Production scheduling is an important aspect to support the success of a manufacturing company in achieving the target of production planning and affects the implementation of the production process over a period of time. The amount of idle time in scheduling are considered less effective in the production line and detailed production scheduling becomes a problem to be solved with rearrangment of the daily activities in PT. MDS. Modeling proper scheduling is a means to help develop the daily production schedule. Preliminary research results indicate that modeling of production scheduling in PT. MDS are influenced by demand  of products, stock products, number of production, downtime of machine cause of change over time, the order of production  scheduling, transportation delay between machines, and working time of machine. The selection of the method of calculation in the preparation of scheduling models must be adapted to the conditions preliminary research to give solutions of  scheduling problems in PT. MDS. A  Critical ratio method, the next grouping of products, and  re-sequencing of production process with Shortest Processing Time method is the right method to re-sequencing of scheduling models in response to a scheduling problem in PT. MDS. A Critical ratio method is useful to sort the product type, while the grouping of products and the Shortest Processing Time method useful to maximize the use of equipments as well as reducing of idle time. The results showed a decreased machine utilization of 64% to 60% and downtime of machine decreased to 5%.                                                                                                                Key words : utilization of machine, idle time, production sequence, critical ratio, shortest processing time,               productivity
LIFE CYCLE ASSESSMENT OF SUGAR AT CANE SUGAR INDUSTRY Mohamad Yani, Ikawati Purwaningsih dan Mas Nandang Munandar
E-jurnal Agro-Industri Indonesia Vol. 1 No. 1 (2012): E-Jurnal Agroindusri Indonesia
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ABSTRACT National sugar industry holds an important role to meet the growing demand for sugar. Along with economic growth and technological progress, the activities of sugar production can cause an impact on the environment. Identification life cycle of sugar production process involves the use of raw materials and energy are needed to determine the efficiency of production and then analyzed for the environmental impact. Based on inventory data from sugar plant, the productivity of sugar cane as raw material  was 787 tons of cane / hectare, but its realization was only 690 tons of cane / hectare or 87.67% of the target. The use of energy in the steam plant from bagasse combustion, the energy generated by bagasse  of 2.83 x 1011 kcal, but the realization of 1.94 x 1011 kcal or 68.55% of the target. It indicates that the efficiency of steam decreased. Losses generated at sugar plant was 11,734.6 tons, this resulted in increased losses of waste and environmental impact. Liquid waste at sugar plant exceeds the quality standard that has been established, it is associated with efficiency in production processes that less optimal. Based on the inventory analysis showed that efficiency in the use of raw materials and energy are influenced by the life cycle starting from the gardens until sugar processing in the factory which will have implications on the environmental impact.   Keywords : life cycle assessment, sugar production process, energy efficiency, environmental  impact
OPTIMASI PRODUKSI BIODIESEL DARI BIJI JARAK PAGAR MELALUI TRANSESTERIFIKASI IN SITU MENGGUNAKAN METODE RESPON PERMUKAAN Ika Amalia Kartika dan Yuyun Pujiastuti (E-Jurnal Agro-Industri Indonesia)
E-jurnal Agro-Industri Indonesia Vol. 1 No. 2 (2012): E-Jurnal Agroindustri Indonesia
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Abstract

  ABSTRACT Energy consumption increases when human activity increases. Today, the energy supply is mainly focused on fossil fuel which its availability is limited and the price increases continuelly. There is thus a need to develop the alternative energy such as biodiesel. The objective of this study is to determine the optimum process conditions to produce biodiesel from jatropha seeds by in situ transesterification using respon surface method (RSM). The variable of process conditions used was reaction time (A) (45, 50 and 55oC) and hexane to total solvent ratio (B) (1/6, 2/6 and 3/6), while the respon (y) observed included biodiesel yield, acid value, saponification value, viscosity and ash content. Reaction time, stirring speed and KOH concentration were respectively fixed at 3 h, 500 rpm and 0,075 mpl/L methanol. Regression analysis showed that first order polynomial equation, y = 74,98 + 1,20 A – 2,71 B (R2 = 89,87%) was significant to optimize the influence of reaction temperature and hexane to solvent ratio on biodiesel yield. The influence of hexane to solvent ratio on biodiesel yield was more significant then that reaction temperature. Biodiesel yield increased as hexane to solvent ratio decreased. The influence of variable A and B on biodiesel quality, especially saponification value and viscosity, was significant. Highest biodiesel yield (78,60%) was obtained under process conditions of 55oC reaction temperature and 1/6 hexane to solvent ratio. Biodiesel quality under such process conditions was acid value of 0,66 mg KOH/g, saponification value of 195 mg KOH/g, ash content of 0,0% and viscosity of 3,70 cSt.                                                                                                                Keyword: biodiesel, transesterification in situ, jatropha, response surface method

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