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INDONESIA
Biopropal Industri
Published by Kementerian Perindustrian Republik Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Industrial & Manufacturing Engineering
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue " Vol 3, No 1 (2012)" : 5 Documents clear
Utilization of Durian Skin as Raw Materials of Art Paper Ariyani, Sukma Budi; Hidayati, Hidayati; Asmawit, Asmawit
Biopropal Industri Vol 3, No 1 (2012)
Publisher : Balai Riset dan Standardisasi Industri Pontianak

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Abstract

This research was to utilize solid waste of durian (durian skin) into economically valuable products. The purpose of this research was to obtain a decorative paper or art paper which can be used as a wide range of creative products such as photo frames, tissue boxes, pencil boxes and others. The research was carried out by destroying the skin of durian and other materials to form slurry and then molded and dried. Assessment of art paper quality was based on the beauty of its performance because it was display the fibers on the surface of the paper. It has been carried out analysis of gramatur, tear resistance, moisture content and ash content of the paper produced by durian skin. Paper with gramatur value, moisture content, low ash content and high tear resistance was the good quality paper. For gramatur and water content testing, a paper which was given a red ocher dye (D) is a paper that has the lowest value of gramatur and water content, each of 0.0212 g/cm2 and 7.77%. While the ash content and tear resistance testing, colored paper with mangosteen peel 17% (E) has a low ash content (0.056%) and high tear resistance (104 times fold).
Research of Cocoa Fat Subtitution with Palm Fatty Oil in Chocolate Bar Making Asmawit, Asmawit
Biopropal Industri Vol 3, No 1 (2012)
Publisher : Balai Riset dan Standardisasi Industri Pontianak

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Abstract

So far, most of West Kalimantan cocoa beans sold raw to collectors in Malaysia at a price that is less competitive, so it was necessary to study the processing of cocoa into chocolate bars with products utilizing palm fat as a fat substitute. The purpose of this study was to determine the effect of the formulation of palm fat and cocoa fat on the physical properties of chocolate bars. The research was conducted by varying the concentration of palm fat to total fat namely 0%, 25%, 50% and 75%. The products were tested on melting point and hedonic. Based on research data it can be concluded that the treatment of palm fat concentrations to total fat by 25% produces chocolate bars with a melting point of 36.0 ° C and preferred by the panelist.
Biogas Production from Tofu Industrial Wastewater with Effective Microorganisms 4 (EM-4) as Biocatalyst Hidayat, Mohamad Rusdi
Biopropal Industri Vol 3, No 1 (2012)
Publisher : Balai Riset dan Standardisasi Industri Pontianak

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Abstract

The addition of Effective Microorganims 4 (EM-4) activator against the biogas  production was done to utilize the tofu industrial wastewater as one of the substrate for biogas production so it can increase its economic value. The aim of this research was to determine the optimum EM-4 concentration as a biogas activator using tofu industrial wastewater as a substrate. This research was conducted by adding the EM-4 activator with different concentrations of 0.25%, 0.50%, 0.75%, and 1% into the 20 litre of tofu wastewater substrate. The process of biogas formation was observed through a pressure reading on pressure gauge tools on digester. The burning of biogas is done after the presure became constant. The optimal EM-4 activator addition for 20 litre of tofu wastewater substrate was 0.75%, with burning time is 14 minutes 56 seconds.
Adsorption Capacity of Mercury Using Sargassum crassifolium Activated Adsorbent Silalahi, Imelda H; Zahara, Titin Anita; Tampubolon, Henry Martua
Biopropal Industri Vol 3, No 1 (2012)
Publisher : Balai Riset dan Standardisasi Industri Pontianak

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Abstract

This study aims to determine the maximum adsorption capacity of Hg using activated Sargassum crassifolium adsorbent. Sargassum crassifolium was activated by protonation using sulfuric acid (H2SO4) 1 M followed by heating for 24 hours at 100OC. Optimum conditions of adsorption was discovered through various of pH and contact time to the Hg(II) concentration decrease. The analysis showed that the optimum pH was 7 and contact time was 60 minutes. Finally the maximum adsorption capacity of Hg(II) using activated Sargassum crassifolium adsorbent was 2,90 mmol/g determined by Langmuir Isotherm equation.
Application of Calibration Curve, Accuracy and Precision Chart as Internal Quality Control at COD Testing in Wastewater Lusiana, Uray
Biopropal Industri Vol 3, No 1 (2012)
Publisher : Balai Riset dan Standardisasi Industri Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (256.507 KB)

Abstract

Quality assurance is one of the technical requirements that include in the quality management system based on SNI ISO/IEC 17025 : 2008. Quality assurance is all the process that planned and systematic activity that applied in analysis, so can give the confidence to the customer or data user. Quality assurance that is applied for COD testing in wastewater are calibration curve, accuracy and precision control chart. The purpose of calibration curve, accuracy and precision control chart applied was to control the data of COD testing so that guaranty the validity to report and to keep the consistence of testing result as statistic all the time. Calibration curve of COD testing have a coefficient correlation 0,99987. Accuracy control chart have limited line BTA = 104,95%, BPA = 102,97%, BIA = 100,98%, BTB = 93,03%, BPB = 95,02% and BIB = 97,0%. Accuracy data can be accepted if that data present between line of BPA and BPB (± 2 SD), data is warned if that data present between line BTA-BPA or BTB-BPB (± 2 SD and ± 3 SD), and data is outlier if that data present out of line BTA and BTB (± 3 SD). The precision data can accepted if that the RPD value is not more than 10 % of COD testing result.

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