Vol. 1 No. 1 (2012): E-Jurnal Agroindusri Indonesia

View Vol. 1 No. 1 (2012): E-Jurnal Agroindusri Indonesia

Published: 2012-10-30

Articles

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

Taufik Djatna dan Ida Bagus Dharma Yoga santosa
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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

Sri Lestari dan Ika Amalia Kartika
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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

Eko Sawirfi Suprihatin dan Ono Suparno
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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
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ADVANCED TREATMENT OF FOOD INDUSTRY WASTEWATER BY ELECTROCOAGULATION USING STAINLESS STEEL ELECTRODES

Mutiara Windika Gameissa, Suprihatin dan Nastiti Siswi indrasti
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ANALYSIS OF PAPER DEFECT REDUCTION IN PAPER INDUSTRY WITH LEAN SIX SIGMA APPROACH

Fika Aras Ardita dan Sukardi
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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
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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

Agus Hidayatul Rohman dan Taufik Djatna
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LIFE CYCLE ASSESSMENT OF SUGAR AT CANE SUGAR INDUSTRY

Mohamad Yani, Ikawati Purwaningsih dan Mas Nandang Munandar
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