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Jurusan Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada

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STUDI PERBANDINGAN PERLAKUAN BAHAN BAKU DAN METODE DISTILASI TERHADAP RENDEMEN DAN KUALITAS MINYAK ATSIRI SEREH DAPUR (Cymbopogon citratus) Slamet -; Supranto -; Riyanto -
ASEAN Journal of Systems Engineering Vol 1, No 1 (2013): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

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Abstract

Indonesia is rich in plant biodiversity. Indonesia volatile oil development efforts through increased development of one plant of lemon grass, which is one of the essential oil producing plants known as Cymbopogon citratus. Lemongrass essential oil in the chemical industry used as raw materials in the manufacture of cosmetics, perfume, deodorant, deodorant soap, floor cleaners and detergents.The purpose of this study was to determine the highest yield of lemongrass essential oil distillation using the method of water distillation, water-steam, and steam to the treatment of intact leaves and chopped leaves and know the quality of essential oil of lemongrass with the treatment of raw materials and different methods of distillation, the design used by two factors: variation in the treatment of raw material (whole leaves and chopped leaves) and the distillation process variation (distilled water (boiled), water-steam distillation and steam distillation. Data obtained from the analysis of yield, specific gravity, refractive index, and oil content of the compound citral essential (lemongrass oil).This study uses three methods of distillation, the distillation of water, water-steam distillation and steam distillation is carried out on samples of intact leaves and chopped leaves of fresh lemongrass. The results yield calculation and testing of physics and chemistry, as well as in the method of analysis SPSS One-Sample Test Statistics for the lemongrass essential oil products.Based on theĀ  results of research on the treatment of raw materials and distillation methods can be concluded that the treatment of raw materials lemongrass intact leaves with water distillation method (boiled) at both the content yield 0.52%, 71.84% citral, specific gravity 0.8967 g/mL, and the refractive index of 1.4905. It is appropriate to mention that SNI 06-39-53-1995 yield 0.3%, the specific gravity of 0.8731 g/mL, and the refractive index of 1.4586. But the content of citral not meet SNI standards are 76.1%, but according to Guenther (2006) which states citral content of between 65% to 85%.
TESTING OF POLONITE, GAZOBETON, PAREPARE BLACK VOLCANIC SAND BEACH, AND KADIDIRI CORAL BEACH SAND FOR PHOSPHORUS REMOVAL FROM WATER AND WASTEWATER IN CONSTRUCTED WETLAND Dian Dwi Kartikasari; Supranto -; Rochmadi -
ASEAN Journal of Systems Engineering Vol 1, No 2 (2013): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

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Abstract

Characteristics of domestic wastewater in Indonesia generally contain phosphorus 4-15 mg/L. Phosphorus in wastewater must be treated to reduce the phosphorus content according to the Indonesia: Government Regulation No. 82/2001 management of water quality and control over water pollution, maximum allowable levels is 0.2 mg/L. A 1953 report from the Max Planck Institute in Germany by Dr. Kathe Seidal discusses the possibility of using wetland plants to remove nutrients from wastewater. The objectives of this research are to ascertain whether Polonite, Gazobeton, Parepare black volcanic sand beach and Kadidiri coral beach sand can be used as sorbent materials and to obtain the data of phosphorus sorption capacity, efficiency and phosphorus adsorption capacity constant of those materials. This research consists of batch and box experiment. Batch experiment was conducted for all material by mechanically shaking sample for several minutes with varying concentrations of the artificial phosphorus solution prepared from KH2PO4 and wastewater. Box experiment was conducted to evaluate the phosphorus removal by Gazobeton in long term experiment. The highest sorption capacity was attained by polonite 0.917 g/Kg, was followed by gazobeton 0.504 g/Kg, Parepare black volcanic sand beach 0.174 g/Kg and then the finally Kadidiri coral beach sand 0.131 g/Kg. The phosphorus sorption efficiency by Polonite, Gazobeton, Parepare black volcanic sand beach and Kadidiri coral beach sand each Kg are 91%, 50%; 17% and 13% respectively. Phosphorus adsorption capacity constant of polonite is 4906 L/g gazobeton is 115 L/g Parepare black volcanic sand beach is 19 L/g and Kadidiri coral beach sand is 14 L/g