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Han Roliadi
Member of Research and Development Center, Ministry of Forestry Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Energy Materials Science & Nanotechnology Mathematics

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POTENSI TEKNIS PEMANFAATAN PELEPAH NIPAH DAN CAMPURANNYA DENGAN SABUT KELAPA UNTUK PEMBUATAN PAPAN SERAT BERKERAPATAN SEDANG Han Roliadi; Dian Anggraini Indrawan; Gustan Pari; Rossi Margareth Tampubolon
Jurnal Penelitian Hasil Hutan Vol. 30 No. 3 (2012): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2012.30.3.183-198

Abstract

Indonesia's tropical natural forest woods are conventionally still raw materials for MDF, which in potency becomes depleted and scarce. Consequently, use of alternative fibrous materials deserves thorough consideration, with their potencies abundant and mostly still unutilized, such as Nypa frutican midrib and coconut coir. In relevant, an experiment was conducted to utilize both kinds of fiber for MDE Those fiber stuffs were each passed through the preparation, and examination of their basic properties (i.e. specific gravity, chemical composition, and fiber dimensions and their derived values). The fibrous pulping for MDF employed a bat semi-chemical soda process under atmospheric pressure, followed with the refining action to achieve pulp freeness at 600-700 mil CSF. The refined pulp were then added with additives (i.z. 4% alum, 3% UF-adbesive, 5% activated charcoal), and then shaped into MDF mat using wet process, followed with beat treatment, bot pressing, conditioning, and ultimately the testing of MDF properties. Scrutiny on MDF physico-strength properties revealed that nypa-midrib fibers were more prospective for MDF than coconut-coir fibers. Activated-charcoal addition lowered the MDF formaldehyde-emission, but decreased its strengths. In properties, MDFs from nyta fibers significantly outperformed those from coconut-cnir fibers in complying with the standard (JIS). Yet, connut-nir fs could still in prospective for MDF by mixing them (pulp form) with nypa-fiber pulp at the proportion (w/w): 25%+75 and 50%+50%
PENYEMPURNAAN SIFAT PAPAN SERAT BERKERAPATAN TINGGI DARI CAMPURAN RUMPUT GELAGAH, TANDAN KOSONG KELAPA SAWIT, DAN BAMBU Dian Anggraini Indrawan; Han Roliadi; Rossi Margareth Tampubolon; Gustan Pari; Adi Santoso; Mohamad Iqbal
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.2015.33.3.193-214

Abstract

Laboratory-scale manufactured hardboard made of Saccharum Sponaneoun Grasses (SSG), Empty Oil-palm Bunches (EOPB), and andong bamboo is potentially developed. However, initial experiment shows the hardboard did not meet Japanese Industrial Standard (JIS) and International Standard Organization (ISO) for hardboard. This paper observes modification of the hardboard to satisfy the standards. Modification includes adding alkali concentration during pulp cooking and changing the additives composition. Result shows modification can enhance the hardboard quality to satisfy JIS and ISO requirements. Fiber mixture of SSG pulp and andong/betung bamboo pulp was cooked in 10.5% alkali concentration; and 12% alkali concentration for EOPB pulp. Additives composition used were tannin-resorcinol formaldehyde/TRF adhesive, alum, and activated charcoal; without wax emulsion. The mixture of SSG pulp (50%) + EOPB pulp (50%) was the most prospective for hardboard, followed by SSG pulp (100%) solely; SSG pulp (50%) + andong bamboo pulp (50%); and SSG pulp (50%) + betung bamboo pulp (50%) as the lowest prospects. The least prospective fibrous material (betung bamboo) are expectedly be improved by using more TRF adhesive, nano-size activated charcoal and cross-linking agents.
PEMBUATAN PAPAN ISOLASI DARI CAMPURAN PULP LIMBAH PEMBALAKAN HUTAN DAN ARANG AKTIF DENGAN BAHAN PEREKAT KHITOSAN CANGKANG UDANG Han Roliadi; Rena M Siagian; Dian Anggraini Indrawan; Rosi M. Tampubolon
Jurnal Penelitian Hasil Hutan Vol. 30 No. 1 (2012): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2012.30.1.59-67

Abstract

This study examined characteristics of insulation board manufactured from the mixture of wood astes from Eucalyptus bybrid plantation forest (PF) logging and activated charcoal, and the adhesive as used was chitosan derived from the shrimp exoskeleton. PF-logging's wood wastes were reduced in size to chips, then made into pulp using open bot soda chemical process at the condition being alkali (NaOH) concentration at 8%, wood to liquor ratio 1:8 (w/v), and maximum cooking temperature 100C held for 3 hours. Insulation-board mat was formed using the wet process from the miscture of PF logging's wood wastes and activated charcoal at the proportions (w/w) consecutively 100% +0%, 97,5% + 2,5%, 95% + 5%, 92,5% +7,5%, dan 90%+10%. Prior to mat forming, to the miscture were added 2 kinds of adhesives separately (i.e. chitosan and tapioca as the comparison) 5% each. Physical and mechanical properties of the resulting insulation board with tapioca were better than those with chitosan. The greater the portion of activated charcoal mixed to the PF-logging's wood wastes, the lower the density and the strength (MOR), the more increased the moisture content, but the more improved the dimensional stability. The insulation board which revealed the most promising prospects and could favorably meet the JIS specification was the one from the mixture proportion of PF-logging's wood wastes and activated charcoal at 97.5%+ 2.5%, uring tapioca adhesive, and the one from solely 100% PF-logging wastes (without activated charcoal) using chitosan.
KEMUNGKINAN PENGGUNAAN ANTIOKSIDAN GUNA MEMPERTINGGI KETAHANAN OKSIDASI BIODIESEL DARI MINYAK BIJI TANAMAN JARAK PAGAR (Jatropha curcas L.) Han Roliadi; R. Sudradjat; Arum Anggraini
Jurnal Penelitian Hasil Hutan Vol. 30 No. 1 (2012): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2012.30.1.69-86

Abstract

The excperiment has been done to look into the utilization of Jatropa curcas oil for biodiesel as the alternative of the fossil-based diesel oil through the estrans (esterification and transesterification) process and the use of antiocidants. The estrans process brought about favorable changes in the oil characteristicus (eg, the decreases in density, viscosity, acid number, and iod number), thereby enhancing its performance as biodiesel. Three kinds of antioxidants were used (i.e. TBHQ, BHT, and Formula X), each with varying concentrations (0.03- 0.10%), and storage duration were imposed from the first until fourth week. The examined responses comprised of peroxide number, acid number, and kinematic viscosity. Reaching the fourth week, however, the wcidation process still occurred to the biodiesel oil despite using antioxidants (slight increases in peroxide number, acid number, and kinematic viscosity), but with the intensity far less than that of the control biodiesel (without antioxidant). The antioksidant regarded as the most effective inhibiting, such oxidation was TBHQ, followed in decreasing order by BHT and Formula X. However, the Formula X could expectedly perform as effectively as TBHQ and BHT, but with higher concentration (0.10%). The characteristics of biodiesel either the control or with antisocidants (up to the fourth week duration) could still satisfy the SNI criteria and those of fossil-based diesel oil.
Co-Authors Abdurachman Abdurachman ADI SANTOSO Arum Anggraini Buharman Buharman Dian Anggraini Indrawan Effendi Tri Bahtiar Gamma Irca Pradikta Gustan Pari Khaswar Syamsu Liesbetini Haditjaroko Lisna Efiyanti Mohamad Iqbal Naresworo Nugroho R. Sudradjat Rena M Siagian Rena M. Siagian Rentry Augusti N Rosi M. Tampubolon Rossi Margareth Tampubolon Sihati SUPRAPTI Sri Komarayati