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R Sudradjat
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Energy Materials Science & Nanotechnology

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PENGARUH BEBERAPA FAKTOR PENGOLAHAN TERHADAP SIFAT ARANG AKTIF R Sudradjat
Jurnal Penelitian Hasil Hutan Vol 2, No 2 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3347.034 KB) | DOI: 10.20886/jphh.1985.2.2.1-4

Abstract

Variables used in this investigation are wood species (Jelutung and keruing), carbonization temperatures (400°C and 500°C) and activators (CaCl2, MgCl2 and ZnCl2). The parameters observed were yield, moisture content, ash content, iodine and benzene adsorption. This investigation reveals that the highest yield obtained from keruing wood, CpCl2 activator at carbonization temperature of 400°C. The lowest moisture content charcoal obtained by using processing temperature of 500°C. Jelutung wood with MgCl2 activator had the lowest moisture content compared to that of ZnCl2 activator. The highest iodine adsorption obtained when using ZnCl2 activator and carbonization temperature of 500°C (for keruing wood). It was found that high benzene vapor adsorption charcoal could be produced by using ZnCl2 activator, carbonization temperature 500°C and Jelutung wood as raw material.Sunbury, H.M. (1923). The destructive distillation of wood. Ben Brother, Ltd., London.Hartoyo (1975). Arang aktif, pembuatan dan penggunaan. Kehutanan Indonesia.Sudradjat Prawirakusuma dan Tjipto Utomo (1972). Pembuatan Arang Aktif. Lembaga Kimia Nasional. LIPI Bandung.
PENGARUH CARA EKSTRAKSI TERHADAP SIFAT FISIKA DAN KIMIA SAGU R Sudradjat
Jurnal Penelitian Hasil Hutan Vol 2, No 1 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6093.673 KB) | DOI: 10.20886/jphh.1985.2.1.18-21

Abstract

The aim of this investigation is to evaluate  the effect of extraction methodes on physical  and chemical properties  of sago. Extraction  methodes  comprise  of  fermentation,  mechanical, and  traditional.The result indicated that sago yield varies from 20,19%  - 40,12%, acidity  0,89 - 0,98,  moisture  13,39% -14,29%, ash 0,15%  - 0,32%, protein 0,38%  - 0,46%, crude  fiber 0,27%  - 0,31%,  fat  0,17%  - 0,23%  and amylum  72,64%  - 88,12%.Mechanical  extractions  gave  the  highest  yield  and  amylum  content. Fermentation  methode  show more  acid  than traditional.  The traditional  methode presents the  highest ash content. This included that the mechanical methode  seemed to be preferable   for  commercial application.
PENGARUH BEBERAPA FAKTOR PENGOLAHAN TERHADAP SIFAT ARANG AKTIF R Sudradjat
Jurnal Penelitian Hasil Hutan Vol 2, No 2 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3347.034 KB) | DOI: 10.20886/jphh.1985.2.2.1-4

Abstract

Variables used in this investigation are wood species (Jelutung and keruing), carbonization temperatures (400°C and 500°C) and activators (CaCl2, MgCl2 and ZnCl2). The parameters observed were yield, moisture content, ash content, iodine and benzene adsorption. This investigation reveals that the highest yield obtained from keruing wood, CpCl2 activator at carbonization temperature of 400°C. The lowest moisture content charcoal obtained by using processing temperature of 500°C. Jelutung wood with MgCl2 activator had the lowest moisture content compared to that of ZnCl2 activator. The highest iodine adsorption obtained when using ZnCl2 activator and carbonization temperature of 500°C (for keruing wood). It was found that high benzene vapor adsorption charcoal could be produced by using ZnCl2 activator, carbonization temperature 500°C and Jelutung wood as raw material.Sunbury, H.M. (1923). The destructive distillation of wood. Ben Brother, Ltd., London.Hartoyo (1975). Arang aktif, pembuatan dan penggunaan. Kehutanan Indonesia.Sudradjat Prawirakusuma dan Tjipto Utomo (1972). Pembuatan Arang Aktif. Lembaga Kimia Nasional. LIPI Bandung.
PENGARUH CARA EKSTRAKSI TERHADAP SIFAT FISIKA DAN KIMIA SAGU R Sudradjat
Jurnal Penelitian Hasil Hutan Vol 2, No 1 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1985.2.1.18-21

Abstract

The aim of this investigation is to evaluate  the effect of extraction methodes on physical  and chemical properties  of sago. Extraction  methodes  comprise  of  fermentation,  mechanical, and  traditional.The result indicated that sago yield varies from 20,19%  - 40,12%, acidity  0,89 - 0,98,  moisture  13,39% -14,29%, ash 0,15%  - 0,32%, protein 0,38%  - 0,46%, crude  fiber 0,27%  - 0,31%,  fat  0,17%  - 0,23%  and amylum  72,64%  - 88,12%.Mechanical  extractions  gave  the  highest  yield  and  amylum  content. Fermentation  methode  show more  acid  than traditional.  The traditional  methode presents the  highest ash content. This included that the mechanical methode  seemed to be preferable   for  commercial application.
Kajian Pengunaan Static Mixing Reactor Pada Proses Produksi Biodiesel Secara Katalitik Dengan Sistem Continue Christian Soolany; Armansyah H. Tambunan; R Sudradjat
Jurnal Penelitian Hasil Hutan Vol. 33 No. 3 (2015): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2015.33.3.261-272

Abstract

Production of biodiesel catalytically requires catalyst and stirring. Good stirring system will produce a homogeneous mixture between triglycerides and methanol. Good stirring can be generated with the use of static mixers. This paper studies the static mixing reactor with continuous system in production of biodiesel catalytically and optimizing the length of static mixer in order to obtain methyl ester level based on standard. The experiments were conducted with transesterification method using palm olein (RBDPO) and methanol with molar ratio 1:6, KOH catalyst of 0.5% and the reaction temperature of 65°C. Biodiesel production process used transient condition. Biodiesel production process with catalyst used two models of static mixer. The treatment was the length of the static mixer. The variations of the static mixer length were conducted by passing fluid one time through static mixer reactor after the temperature has been reached (A0 = 2 static mixer), passed two times through the static mixer reactor (A1 = 4 static mixers), passed three times through the static mixer reactor (A2 = 6 static mixers), and passed four times through the static mixer reactor (A3 = 8 static mixers). Results show that for each treatment had produced methyl ester content above the standard of 96.5% w/w. The determination of the best treatment was obtained based on the best value for parameters of methyl ester and total glycerol resulted was on the condition of 4 times passed in the static mixer reactor (A3 = 8 static mixers) which produced methyl ester content of 97.92% w/w, total glycerol of 0.85%, acid number of 0.31 mg KOH/g, saponification number of 202 mg KOH/g, the biodiesel yield of 98.26%, and reaction time 29 minute.
Co-Authors Armansyah H. Tambunan Soolany, Christian