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Laboratorium Teknik Pengendalian dan Konservasi Lingkungan, FTP - UNEJ

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Effect of Superficial Velocity of Pressure Difference on The Separation of Oil And Water by Using The T-Pipe Junction

International Conference on Engineering and Technology Development (ICETD) 2013: 2nd ICETD 2013
Publisher : Bandar Lampung University (UBL)

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Abstract

Many ways that is done to separate a mixture such as kerosene-water, such as by using branching pipes (T junction), the construction of the pipeline is composed of one side of the inlet, the run up (straight) and sidearm (upwards). This research aims to determine the effect of superficial velocity of mixture flow pressure difference at the T-junction that occurs on a kerosene-water separation efficiency.   Research conducted by using a test section of the T-Junction with a 30 ° slope angle and radius bend 25 mm. pipe Material with a diameter of 1.5 inch Fleksiglass. Media used kerosene and water. The variables measured, namely that of kerosene and discharge water out through the side arm and run arm based on superficial velocity of kerosene and water according the test matrices. The difference in pressure at the T-Junction.  Overall results of nicest phase separation occurs at 58% water cut, Jmix = 0.36 m/s downstream flow barriers, with 40% in 550,7 Pa pressure resulted in Fk = Fw = 97% and 2% that flows to the side arm, and Fk = Fw = 3% and 98% of that flows to run arm. The smaller the value of water cut the better efficiency of separation is achieved. The increasing speed of the shear stress of kerosene and superficial result in increasing pressure fluctuations.Also increased pressure downstream barriers. On Jmix 0.36 m/s is highest pressure 1400 Pa, on PSD signal fluctuations of 8000. With the increasing speed of superficial kerosene PSD magnitude decreased, and the strength of the apex of the PSD increased. On a superficial water medium speed with increasing speed of superficial water and kerosene for constant pressure difference loss occurring on the area of the inlet and run T-junction

PEMBUATAN DIGITAL ELEVATION MODEL (DEM) DENGAN KETELITIAN PIXEL (10 METER X 10 METER) SECARA MANUAL DI SUB-DAS RAWATAMTU

Jurnal AGROTEKNOLOGI Vol 6, No 1 (2012)
Publisher : Jurnal AGROTEKNOLOGI

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Abstract

This research aims to create Digital Elevation Model (DEM) manually, presenting information DEM Rawatamtu sub-watershed and evaluate DEM produced. A method of creating DEM using software ArcGIS 10 with input data obtained from digitazion map in a geocentric manner Indonesia (RBI) and survey the scorching tile with global positioning system (GPS). DEM that has been created having spatial resolution 10 meters with a height 3032,44 m.dpl maximum and minimum 33,82 m.dpl. Information from Rawatamtu subwatershed such as contour (showing the condition of the surface of the land), slope (showing the level of the steepness of the land), aspect (showing the direction of the slope), 3 dimensional display (visualize land forms in 3D), and line of sight (determine the state of a place can be seen from elsewhere). Based on the test results, DEM made manually with spatial resolution 10 meters, the level of error is relatively small and could describe characteristic of topography the watershed of more detailed.Keywords: DEM, watershed management, RBI’s maps, GPS

ANALISIS KETERSEDIAAN DAN KEBUTUHAN SUMBER AIR DI DESA SIDOMULYO

Jurnal AGROTEKNOLOGI Vol 5, No 2 (2011)
Publisher : Jurnal AGROTEKNOLOGI

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Abstract

This article expose water demand and supply analysis for rural smallholders. The case study was done in Sidomulyo Village, Jember, East Java. Research metodhology include : (1) data inventory, (2) water demand, (3) water supply, (4) water balance analysis, and (5) Optimalisation using Linear Programming. Data was inventored by means of: land surveying, discharge measurement, water sampling, and questioner. Water supply was calculated by measuring discharge from the sources of water. Water demand was calculated by classifing user on three classes: (a) residential use, (b) poultry, and (c) coffee-processing-unit. Water balance was calculated by considering demand and suplly. Result showed that water supply form discharge is sufficient as compared to total water demand of the Sidomulyo village. Analysis using Linear Programming show the optimal water can be used for coffee processing unit during the two seasons.Keywords: Water Supply, Water demand, Water Balance, Linear Programing, Smallholder village.

UJI KEANDALAN MODEL SACRAMENTO PADA DAS BEDADUNG DAN DAS KLOPOSAWIT

Jurnal AGROTEKNOLOGI Vol 4, No 1 (2010)
Publisher : Jurnal AGROTEKNOLOGI

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Abstract

Sacramento model is once of rainfall runoff Library (RRL) model which used to measure the flow components that include rainfall, evaporation and discharge. Sacramento model using soil moisture measurements to simulate the water balance at the catchment area. Sacramento model is a relatively new model so needs to be done the testing of this model. The testing process is often used for modeling is a process of calibration and validation. Aim this study is to evaluate the feasibility of the Sacramento model to be applied in the Bedadung and Kloposawit watershed and compare the optimal parameters the both watersheds on the basis of their characteristics. The methodology used is the calibration and validation. Calibration is done by automatic methods (generic) and the method of trial and error (manually) while the method for validating is simple-sample test. The results showed that the Sacramento model proper to applied in the Bedadung and Kloposawit watershed. This is indicated by the Nash coefficient, the coefficient of correlation and bias. By using generic methods on Bedadung watershed available the Nash coefficient value of 0.849, the correlation coefficient for 0.993 and bias of 8.11. Meanwhile, if using manual methods will be obtained the Nash coefficient for 0.906 and correlation coefficient equal to 0.997. While the generic calibration method in the Kloposawit watershed available the Nash coefficient values obtained for 0,894, the correlation coefficient for 0.967 and bias of 11.11. Meanwhile, if using manual methods will be obtained for Nash coefficient is 0.918 and correlation coefficient equal to 0968. The method of validation model with a simple -sample test. The result of validation for Klopo sawit watershed is the Nash coefficient value of 0.913 and the correlation coefficient for 0.989. While the Bedadung watershed is the Nash coefficient value of 0.860, the correlation coefficient for 0.991.Keywords: sacramento, calibration, validation, simple-sample test, nash coefficient

ANALISIS KETERSEDIAAN DAN KEBUTUHAN SUMBER AIR DI DESA SIDOMULYO

Jurnal AGROTEKNOLOGI Vol 5, No 2 (2011)
Publisher : Jurnal AGROTEKNOLOGI

Show Abstract | Original Source | Check in Google Scholar | Full PDF (1034.798 KB)

Abstract

This article expose water demand and supply analysis for rural smallholders. The case study was done in Sidomulyo Village, Jember, East Java. Research metodhology include : (1) data inventory, (2) water demand, (3) water supply, (4) water balance analysis, and (5) Optimalisation using Linear Programming. Data was inventored by means of: land surveying, discharge measurement, water sampling, and questioner. Water supply was calculated by measuring discharge from the sources of water. Water demand was calculated by classifing user on three classes: (a) residential use, (b) poultry, and (c) coffee-processing-unit. Water balance was calculated by considering demand and suplly. Result showed that water supply form discharge is sufficient as compared to total water demand of the Sidomulyo village. Analysis using Linear Programming show the optimal water can be used for coffee processing unit during the two seasons.Keywords: Water Supply, Water demand, Water Balance, Linear Programing, Smallholder village

PEMBUATAN DIGITAL ELEVATION MODEL (DEM) DENGAN KETELITIAN PIXEL (10 METER X 10 METER) SECARA MANUAL DI SUB-DAS RAWATAMTU

JURNAL AGROTEKNOLOGI Vol 6 No 01 (2012)
Publisher : Faculty of Agricultural Technology, University of Jember

Show Abstract | Original Source | Check in Google Scholar | Full PDF (972.541 KB)

Abstract

This research aims to create Digital Elevation Model (DEM) manually, presenting information DEM Rawatamtu sub-watershed and evaluate DEM produced. A method of creating DEM using software ArcGIS 10 with input data obtained from digitazion map in a geocentric manner Indonesia (RBI) and survey the scorching tile with global positioning system (GPS). DEM that has been created having spatial resolution 10 meters with a height 3032,44 m.dpl maximum and minimum 33,82 m.dpl. Information from Rawatamtu subwatershed such as contour (showing the condition of the surface of the land), slope (showing the level of the steepness of the land), aspect (showing the direction of the slope), 3 dimensional display (visualize land forms in 3D), and line of sight (determine the state of a place can be seen from elsewhere). Based on the test results, DEM made manually with spatial resolution 10 meters, the level of error is relatively small and could describe characteristic of topography the watershed of more detailed.Keywords: DEM, watershed management, RBI’s maps, GPS

UJI KEANDALAN MODEL SACRAMENTO PADA DAS BEDADUNG DAN DAS KLOPOSAWIT

JURNAL AGROTEKNOLOGI Vol 4 No 01 (2010)
Publisher : Faculty of Agricultural Technology, University of Jember

Show Abstract | Original Source | Check in Google Scholar | Full PDF (663.745 KB)

Abstract

Sacramento model is once of rainfall runoff Library (RRL) model which used to measure the flow components that include rainfall, evaporation and discharge. Sacramento model using soil moisture measurements to simulate the water balance at the catchment area. Sacramento model is a relatively new model so needs to be done the testing of this model. The testing process is often used for modeling is a process of calibration and validation. Aim this study is to evaluate the feasibility of the Sacramento model to be applied in the Bedadung and Kloposawit watershed and compare the optimal parameters the both watersheds on the basis of their characteristics. The methodology used is the calibration and validation. Calibration is done by automatic methods (generic) and the method of trial and error (manually) while the method for validating is simple-sample test. The results showed that the Sacramento model proper to applied in the Bedadung and Kloposawit watershed. This is indicated by the Nash coefficient, the coefficient of correlation and bias. By using generic methods on Bedadung watershed available the Nash coefficient value of 0.849, the correlation coefficient for 0.993 and bias of 8.11. Meanwhile, if using manual methods will be obtained the Nash coefficient for 0.906 and correlation coefficient equal to 0.997. While the generic calibration method in the Kloposawit watershed available the Nash coefficient values obtained for 0,894, the correlation coefficient for 0.967 and bias of 11.11. Meanwhile, if using manual methods will be obtained for Nash coefficient is 0.918 and correlation coefficient equal to 0968. The method of validation model with a simple -sample test. The result of validation for Klopo sawit watershed is the Nash coefficient value of 0.913 and the correlation coefficient for 0.989. While the Bedadung watershed is the Nash coefficient value of 0.860, the correlation coefficient for 0.991.Keywords: sacramento, calibration, validation, simple-sample test, nash coefficient