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All Journal Jurnal Ilmu dan Teknologi Hasil Hutan International Journal of Renewable Energy Development Peronema Forestry Science Journal Journal of Engineering and Technological Sciences Sarwahita : Jurnal Pengabdian Kepada Masyarakat PERENNIAL Journal of Sylva Indonesiana Prosiding Konferensi Nasional PKM-CSR Jurnal Sylva Lestari Makara Journal of Technology Repong Damar: Jurnal Pengabdian Kehutanan dan Lingkungan International Journal of Renewable Energy Development Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS)
Apri Heri Iswanto
Department Of Forest Product, Faculty Of Forestry, Universitas Sumatera Utara, Kampus USU, Padang Bulan, Medan, Sumatera Utara, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Social Sciences Other

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The Kraft Pulp And Paper Properties of Sweet Sorghum Bagasse (Sorghum bicolor L Moench) Fatriasari, Widya; Supriyanto, Supriyanto; Iswanto, Apri Heri
Journal of Engineering and Technological Sciences Vol 47, No 2 (2015)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (286.53 KB) | DOI: 10.5614/j.eng.technol.sci.2015.47.2.4

Abstract

This study investigated the potency of sweet sorghum (Sorghum bicolor) bagasse as raw material for pulp and paper using kraft pulping. The effects of alkali and sulfidity loading on kraft pulp and paper properties were also investigated. The pulping condition of the kraft pulp consisted of three levels of alkali loading (17, 19 and 22%) and sulfidity loading (20, 22 and 24%). The maximum cooking temperature was 170°C for 4 h with a liquid to wood ratio of 10:1. Kraft pulping of this Numbu bagasse produced good pulp indicated by high screen yield and delignification selectivity with a low Kappa number (< 10). The unbleached pulp sheet produced a superior brightness level and a high burst index. The increase of active alkali loading tended to produce a negative effect on the pulp yield, Kappa number and paper sheet properties. Therefore, it is suggested to use a lower active alkaline concentration.
Optimizing the Synthesis of Lignin Derivatives from Acacia mangium to Improve the Enzymatic Hydrolysis of Kraft Pulp Sorghum Bagasse Fatriasari, Widya; Hamzah, Fajar Nur; Pratomo, Bagas Ikhasan; Fajriutami, Triyani; Ermawar, Riksfardini Annisa; Falah, Faizatul; Laksana, Raden Permana Budi; Ghozali, Muhammad; Iswanto, Apri Heri; Hermiati, Euis; Winarni, Ina
International Journal of Renewable Energy Development Vol 9, No 2 (2020): July 2020
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.9.2.227-235

Abstract

The present study is aimed at optimizing the synthesis of Amphipilic lignin derivatives (A-LD) from the isolated lignin of A.mangium black liquor (BL), using the one and two step acid isolation method, and commercial lignin (LS) was used as comparison. The experimental design was conducted using Taguchi method, which consisted of four parameters and two level factors, with reference to the matrix orthogonal array, L8, including temperature, reaction time, amount of polyethylene glycol diglycidylethers (PEGDE) and Kraft lignin (KL). Furthermore, the kraft pulp of sweet sorghum bagasse (SSB) was used as substrate in the enzymatic hydrolysis (NREL method), with addition of A-LD, whose functional group and surface tension were then characterised using ATR-FTIR and surface tension equipment. Conversely, an improvement in the reducing sugar yield (RSY) compared to the control was observed after adding various A-LDs to the substrate during enzymatic hydrolysis. This product was more prospective for L2S than others products under milder circumstances, due to the fact that it possesses the lowest surface tension. Also, Taguchi analysis demonstrated the treatment at 60 °C for 1 h with 3.0 g and 1.0 g of PEDGE and lignin, respectively as the optimum condition, while the amount of lignin present was included as a factor with the propensity to significantly affect A-LD L1S and LS. Therefore, it was established that the A-LDs from A. mangium kraft lignin require milder synthesis conditions, compared to other existing methods and despite the differences in optimum experimental condition for L2S and LS, the functional groups in the IR spectra possessed very identical characteristics. 
The objective of this research was to analyze the physical and mechanical properties of palm oil trunk.  The result showed that in term of the vertical direction the lower part of stem had better physical (density, moisture content and shrinkage) and mechanical (modulus of elasticity, modulus of rupture, hardness, compressive and tensile strength parallel to grain) properties compared with medium and upper end part.  In the horizontal direction the edge part of trunk had better physical and mech Apri Heri ISWANTO; Tito SUCIPTO; Irawati AZHAR; Zahrial COTO; Fauzi FEBRIANTO
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 3 No. 1 (2010): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The objective of this research was to analyze the physical and mechanical properties of palm oil trunk.  The result showed that in term of the vertical direction the lower part of stem had better physical (density, moisture content and shrinkage) and mechanical (modulus of elasticity, modulus of rupture, hardness, compressive and tensile strength parallel to grain) properties compared with medium and upper end part.  In the horizontal direction the edge part of trunk had better physical and mechanical properties than medium and center part.   Keywords :              horizontal direction, palm oil stem, physical pro-perties, mechanical properties, vertical direction
The acidity of wood and panel product was important factor to impact on metal corrosion and give effect on adhesive curing time.  The objective of this research was  to explore of pH and buffering capacity from nine tropical woods.  Method to determination of pH and buffering capacity  reffers to Johns and Niazi (1980) experiment. The result of this research showed that nine tropical woods which observed had different acidity and buffering capacity. The range of wood acidity had pH 4-7.  The cor Apri Heri ISWANTO; Tito SUCIPTO; Fauzi FEBRIANTO
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 4 No. 1 (2011): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The acidity of wood and panel product was important factor to impact on metal corrosion and give effect on adhesive curing time.  The objective of this research was  to explore of pH and buffering capacity from nine tropical woods.  Method to determination of pH and buffering capacity  reffers to Johns and Niazi (1980) experiment. The result of this research showed that nine tropical woods which observed had different acidity and buffering capacity. The range of wood acidity had pH 4-7.  The correlation value of pH and buffering capacity from this research about 4-5 for base and acid buffering.   Keywords:  acidity of wood, pH, buffering capacity.
PENGARUH PERENDAMAN PARTIKEL TERHADAP SIFAT FISIS DAN MEKANIS PAPAN PARTIKEL DARI AMPAS TEBU (Saccharum officinarum) Apri Heri Iswanto; Zahrial Coto; Kurniawansyah Effendy
PERENNIAL Vol. 4 No. 1 (2008)
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v4i1.176

Abstract

The objective of this research is to research the effect of particle soaking to physical and mechanical properties particleboard that resulted. The best result of particleboard is particleboard with treatment of hot water soaking. From this result obtained average of physical properties of particleboard (i.e. density, moisture content, water absorption, and thickness swelling) are 0.7 g/cm3; 9.58%; 52.27%; 10.05%. While the result average of mechanical properties of particleboard (i.e. Modulus of Rupture, Modulus of Elasticity, Internal Bond and Screw Holding Power) are 118.79 kg/cm2; 8.909 kg/cm2; 1.85 kg/cm2; 28.40 kg. Key words: Soaking, bagasse, particleboard, physical and mechanical properties References
BASIC PROPERTIES OF SENTANG WOOD (Melia excelsa Jack) AND ITS SUITABILITY AS ORIENTED STRAND BOARD MATERIALS Apri Heri Iswanto; Fauzi Febrianto; Imam Wahyudi
PERENNIAL Vol. 6 No. 2 (2010)
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v6i2.201

Abstract

Tujuan penelitian ini adalah untuk melihat kesesuaian kayu sentang sebagai bahan baku berdasarkan tinjauan sifat dasarnya dalam hal ini anatomi, fisis, dan kimia. Metode yang digunakan dalam penentuan struktur kayu yaitu teknik maserasi dan mikrotom, sifat fisik berdasarkan standar BS-373 (1957), dan sifat kimia menggunakan standar TAPPI. Hasil penelitian menunjukkan bahwa (1) struktur kayu: kayu sentang cocok dipergunakan sebagai bahan baku OSB karena memiliki dinding sel tipis sampai sedang, pori relatif banyak. Ini merupakan dua faktor yang berperan penting dalam hal perekatan dan proses pengempaan; (2) sifat fisik: kayu sentang memiliki BJ sedang, nilai T/R untuk kering udara dan oven masing-masing 1,25 and 1,17; serta (3) sifat kimia: kayu sentang memiliki kandungan ekstraktif sedang, kandungan selulosa tinggi dan lignin dan kadar abu sedang. Kata kunci: kayu sentang, struktur kayu, fisis, kimia
The Kraft Pulp And Paper Properties of Sweet Sorghum Bagasse (Sorghum bicolor L Moench) Widya Fatriasari; Supriyanto Supriyanto; Apri Heri Iswanto
Journal of Engineering and Technological Sciences Vol. 47 No. 2 (2015)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2015.47.2.4

Abstract

This study investigated the potency of sweet sorghum (Sorghum bicolor) bagasse as raw material for pulp and paper using kraft pulping. The effects of alkali and sulfidity loading on kraft pulp and paper properties were also investigated. The pulping condition of the kraft pulp consisted of three levels of alkali loading (17, 19 and 22%) and sulfidity loading (20, 22 and 24%). The maximum cooking temperature was 170°C for 4 h with a liquid to wood ratio of 10:1. Kraft pulping of this Numbu bagasse produced good pulp indicated by high screen yield and delignification selectivity with a low Kappa number (< 10). The unbleached pulp sheet produced a superior brightness level and a high burst index. The increase of active alkali loading tended to produce a negative effect on the pulp yield, Kappa number and paper sheet properties. Therefore, it is suggested to use a lower active alkaline concentration.
PENGARUH PERLAKUAN AWAL PARTIKEL TERHADAP SERANGAN RAYAP TANAH PADA PAPAN PARTIKEL DARI LIMBAH BATANG KELAPA SAWIT (The Effect of Particle Pre-treatment of Subterranean Termite Attack on Particleboard from Oil Palm Trunks Waste) Cut Yulia Maghfirah; Tito Sucipto; Rudi Hartono; Apri Heri Iswanto
Peronema Forestry Science Journal Vol 3, No 1 (2014): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (305.242 KB)

Abstract

The utilization of oil palm trunk could be used as raw material for particleboard. It was not only increased the added value, but also used as substitution of wood. The purpose of this research evaluated the resistance of particleboard from waste of oil palm trunk on subterranean termites attack. The variation of particle pretreatment were dont by soaking the particle in hot water (1,2 and 3 hours) and in cold water (24, 48 and 72 hours.) Particleboard were made from oil palm trunk using isocyanate of 7%, with size 30 x 30 x 1 cm and density target of 0,70 gr/cm3. The evaluation of the samples were done by grave yard test along 100 days for resistance of particleboard on subterranean termites. The result showed that percentages of particleboard weight loss to subterranean termites were 19,99-63,92%. Based on subterranean termites attack, the particleboard made from oil palm trunk was classified as moderate to very destroy.Keywords: oil palm trunk, isocyanat, particle board, subterranean termites
Variation of Particle Pretreatment of Subterranean Termite Attack on Particle Board From Oil Palm Trunk Waste with Phenol Formaldehyde Adhesive Guido Simbolon; Rudi Hartono; Tito Sucipto; Apri Heri Iswanto
Peronema Forestry Science Journal Vol 3, No 1 (2014): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.268 KB)

Abstract

These research were to known the particle pretreatment on the durability properties of particleboard on termites attack. The variation of particle pretreatment in this research were done by soaking the particle in hot water (1,2 and 3 hours) and cold water (24, 48 and 72 hours). The particle board was made from oil palm trunk using of phenol formaldehyde adhesive with size 30 cm x 30 cm x 1 cm and density target of 0.7 g/cm3. Particle board will be test by grave yard test along 100 days for durability from termites attack and will be compared by Indonesia National Standard (SNI) 01-7202-2006. The result showed that the weight loss of particle board values were 38.63-88.11%. Based on termites attack level, it was classified as very low durability.Keywords : oil palm trunk, phenol formaldehyde adhesive, particle board, subterranean termite.
The variation of Temperature and Pressing Time on Particle Board Quality from Waste Oil Palm Trunk Using Phenol Formaldehyde Adhesive Syahroni Hasan Siregar; Rudi Hartono; Tito Sucipto; Apri Heri Iswanto
Peronema Forestry Science Journal Vol 3, No 1 (2014): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (550.565 KB)

Abstract

The waste of oil palm trunks could be used as raw material for particle boards. The purpose of these studies were to known the physical, mechanical properties and to know durability of particleboard on termites attack. The variation of treatment were temperature (160, 170 and 180 °C) and pressing time (5, 7, 8 and 11 minutes). Particleboards were made from waste of oil palm trunk using phenol formaldehyde of 8 % with size 30 cm x 30 cm x 1 cm and density target of 0.70 gr/cm3. Particleboard were tested physical and mechanical properties and will be compared by SNI 03-2105-2006. Also, it will be tested by grave yard test along 100 days for durability from termites attack.Result showed that density, moisture content, water absorption, thickness swelling, MOE, MOR and Internal bond were 0.65 -0.77 g/cm³, 4.89-7.76 %, 57.36-71.53 %, 7.03-13.28 %, 10.595 -19.258 kg/cm², 57.67 -135.55 kg/cm², 1.67-3.81 kg/cm², respectively. All of density, moisture content and internal bond fulfilled standard. The other hand all of MOE didn’t fulfilled the standard. While thickness swelling and MOR only several which fulfilled the standard. Weight loss particleboard from subterranean termites were 32.33-87.45 %. Particleboard durability was classified as very bad. The best treatment of particleboard was attained by pressing temperature of 160°C for 7 minutes.Key words: oil palm trunk, particleboard, temperature and pressing time, phenol formaldehida
Co-Authors Achmad Siddik Toha Adrian Hilman Agus Purwoko Ahmad Baiquni Rangkut Ahmad Baiquni Rangkuti Ahmad Baiquni Rangkuti Ahmad Sadeli Alfan Gunawan Ahmad Andi Hermawan Andrianta Ginting Anita Zaitunah Anita Zaitunah Arida Susilowati Iswanto Arif Nuryawan Arif NURYAWAN Bagas Ikhasan Pratomo Bejo Slamet Bora Jeong Cut Yulia Maghfirah Dede Hermawan Deni Elfiati Deni Elfiati Deni Elfiati Eddy Mirwandhono Erman Munir Erni Jumilawaty Euis HERMIATI Euis Hermiati Faizatul Falah Faizatul FALAH Fajar Nur Hamzah Fajriutami, Triyani Fauzi Febrianto Fitrianum, Fadilah Guido Simbolon Hafizah Arinah Hafizah Arinah hamzah, fajar nur Hardiansyah Tambunan Harisyah Manurung Imam Wahyudi Indrawan, Imam Wahyudi Ina Winarni Ina Winarni, Ina Irawati AZHAR Irawati AZHAR Irawati Azhar Iwan RISNASARI Iwan Risnasari Jajang Sutiawan Jajang Sutiawan Janrahman Simarmata Johanna Christina Malau Kaya Muda Lubis Kurniawansyah Effendy Laksana, Raden Permana Budi Lee Seng Hua Lubis, Muhammad Adly Rahandi Lubos Kristak Luthfi Hakim Luthfi Hakim Ma&#039;rifatin Zahrah Manggar Arum Aristri Mariah Ulfa Mariah Ulfa Maulana, Muhammad Iqbal Moehar Maraghiy Harahap Mohammad Basyuni Muhammad Ghozali Muhammad Ghozali Nurdin Sulistiyono Oding Affandi OK Hasnanda Syahputra OK Hasnanda Syahputra Petar Antov Pindi Patana Prabuningrum, Dita Sari Pratomo, Bagas Ikhasan Purwoko, Agus Raden Permana Budi Laksana Ridwanti Batubara Riksfardini Annisa Ermawar Riksfardini Annisa ERMAWAR Rita Kartika Sari Rudi Hartono Rudi Hartono Rudi Hartono Rudi Hartono Rudi Hartono Rudy Hartono Sipahutar Ryzki Pebriansyah Samsuri Samsuri Samsuri, Samsuri Sucipto, Tito Supriyanto Supriyanto Supriyanto Supriyanto Surdiding RUHENDI Suri Fadhilla Syahroni Hasan Siregar Tati Vidiana Sari Tito Sucipto Triyani Fajriutami Wahyu Hidayat Widya Fatriasari Widya Fatriasari Widya FATRIASARI Winda Martogi Situmeang Yulia Siti Maisaroh Yunus Afifuddin Yusuf Sudo Hadi Zahrial COTO