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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Teknologi Industri Pertanian Jurnal Ilmu dan Teknologi Hasil Hutan JURNAL HUTAN LESTARI Jurnal Simetris Jurnal Bahan Alam Terbarukan Jurnal Penelitian Hasil Hutan Acta Aquatica: Aquatic Sciences Journal JURNAL ILMIAH MAHASISWA AGROINFO GALUH JURKAM: Jurnal Konseling Andi Matappa Jurnal Ilmu dan Teknologi Kayu Tropis Jurnal Administrasi dan Manajemen PERENNIAL Journal of Sylva Indonesiana Jurnal Penelitian Hasil Hutan Journal of Information Systems and Management Jurnal PkM MIFTEK Jurnal Sylva Lestari Makara Journal of Technology Jurnal Penelitian Hasil Hutan

Dede Hermawan

Departemen Hasil Hutan, Fakultas Kehutanan Dan Lingkungan, Institut Pertanian Bogor

Author-ID : 250991

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Pengaruh Jenis Perekat terhadap Sifat Papan Partikel dari Campuran Limbah Vinir Sengon dan Bagas Sorgum Jajang Sutiawan; Suci Mardhatillah; Dede Hermawan; Firda A. Syamani; Subyakto Subyakto; Sukma S. Kusumah
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 18, No 1 (2020): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/jitkt.v18i1.539

Limbah industri perkayuan dan pertanian memiliki potensi untuk dijadikan bahan baku dalam pembuatan papan partikel. Penelitian ini bertujuan untuk mengetahui pengaruh jenis perekat terhadap sifat fisis dan mekanis papan partikel. Papan partikel dibuat dengan menggunakan perekat 10% urea formaldehida (UF), 10% fenol formaldehida (PF) dan 20% asam sitrat (CA). Komposisi campuran bahan baku partikel vinir sengon dan bagas sorgum yang digunakan dalam penelitian ini adalah 25:75 berdasarkan berat. Karakteristik papan partikel diuji secara fisis dan mekanis berdasarkan standar JIS A 5908:2003. Hasil penelitian ini menunjukkan bahwa sifat fisis terbaik dimiliki oleh papan yang dibuat dengan perekat CA. Sementara itu, sifat mekanis terbaik dimiliki oleh papan yang dibuat dengan perekat UF. Berdasarkan hasil penelitian, kadar air, pengembangan tebal, keteguhan patah, dan keteguhan rekat papan partikel telah memenuhi standar JIS A 5908:2003 untuk papan partikel.

Optimasi Aktivasi Arang Aktif dari Arang Hidro Tempurung Buah Kelapa Sawit Menggunakan Metodologi Permukaan Respon (Optimization of Activated Carbon from Oil Palm Shell Hydrochar Using Response Surface Methodology) Ismail Budiman; Dede Hermawan; Fauzi Febrianto; Subyakto Subyakto; Gustan Pari
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 17, No 1 (2019): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/jitkt.v17i1.457

In this study, activated carbon was prepared using hydrochar derived from oil palm shell through hydrothermal carbonization (HTC), and activated by 5% kalium hydroxide (KOH). The activation process was carried out using a temperature of 700 °C - 800 °C, with activation time of 60-120 minutes. The parameters of the activation process were optimised by response surface methodology (RSM). The central composite design (CCD) is used to determine the effect of activation temperature and activation time on some responses i.e. proximate analysis, ultimate analysis, methylene blue number, iodine number, electrical conductivity, yield percentage, and some gas pollutants adsorption. The results showed that almost all of activated charcoal met the technical standard of activated charcoal of SNI 06-3730-1995 for moisture content, ash content, volatile matter, fixed carbon, iodine number, and methylene blue number. The optimum conditions for the activation process involving the response observed were at 787.85 °C for 116.52 minutes

Fundamental Properties of Ply Bamboo Jajang Suryana; Muhammad Y Massijaya; Yusuf Sudo Hadi; Dede Hermawan
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 9, No 2 (2011): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Physical and mechanical properties of ply bamboo made from various bamboo species and adhesive type were studied. Bamboo species used in this study were tali (Gigantochoa apus), andong (Gigantochloa verticillata), and betung (Dendrocalamus asper). Five types of adhesives were used for the experiment, namely methylene diphenyl isocyanate (MDI), phenol formaldehyde (PF), melamine formaldehyde (MF), urea formaldehyde (UF), and poly vinyl acetate (PVAC). Three layer of ply bamboo with (40x40x0,4) cm3 in size was made by weight spread of adhesive 200 g m-2, compression temperature at 140 ºC for MDI and PF, 110 ºC for MF and UF, and room temperature for PVAc adhesives, with specific pressure of 15 kg cm-2 for five minutes. Especially for PVAc, cold compression was carried out using a clamp for 24 h. Fundamental properties of ply bamboo was tested according to SNI 01-5008.7-1999. The results showed that the development dimension of the ply bamboo from the largest to the smallest was in the side of thick, wide, and long, while for timber and plywood were in the side orientation of tangential (width), radial (thick), and longitudinal (long). The best physical and mechanical properties of ply bamboo were obtained from betung bamboo using MDI adhesive.Key words: melamine formaldehyde, methylene diphenyl isocyanate, phenol formaldehyde, ply bamboo, poly vinyl acetate

Physical and Mechanical Properties of Particleboard Made from Jatropha (Jatropha curcas) Fruit Hulls Reinforced with Wood Particle Apri H Iswanto; Fauzi Febrianto; Yusuf Sudo Hadi; Surdiding Ruhendi; Dede Hermawan
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 10, No 2 (2012): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The objective of this research was to evaluate the properties of particleboard made from mixtures of jatropha fruit hulls (JFH) and wood particle in several mixture ratios. JFH, and mangium wood (Acacia mangium Wild) particle were untreated and treated with 1% acetic acid solution for 24 h. Urea formaldehyde (UF) resin with 10% resin content (SC: 63%) was used as binder. The ratio of JFH and wood particles were set at 100:0, 70:30, 60:40, 50:50, and 0:100. The target density of particleboard was set at 0.70 g cm-3. The temperature and pressure of hot pressing were set at 130 ºC and 2.544 N mm-2 for 10 minutes. The physical and mechanical properties of particleboard were evaluated according to JIS A 5908-2003 standard. The result indicated that addition of untreated mangium wood particle onto JFH particles improved mechanical properties of board especially modulus of elasticity (MOE) and modulus of rupture (MOR) parameters. However, the internal bond (IB) parameter was found to decrease with addition of wood particle. The higher amount of wood particle added resulted in the better the MOR and MOE parameters. Addition of acetic acid treated mangium wood particle onto JFH particleboard resulted in lower physical and mechanical properties.Key words: Jatropha curcas, fruit hulls, particleboard, wood particle

Surface Quality of Commercially Manufactured Particleboard Panels in Indonesia Salim Hiziroglu; Yusuf Sudo Hadi; Dede Hermawan
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 6, No 1 (2008): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

This study is an attempt to evaluate surface roughness of commercially manufactured particleboard in Indonesia. Four different types of particleboard panels were used to measure their surface roughness on a stylus type of profilometer. Three roughness parameters, namely average roughness (Ra), mean peak-to-valley height (Rz), and maximum roughness (Rmax) were employed to quantify roughness of the samples. Panel type-D had the roughest surface characteristics with an average Ra value of 14.20 µm while panel type-A had the smoothest corresponding value of 6.13 µm. Panel types C and D had relatively rough surface as compared to surface of typical commercially manufactured particleboard panels due to having large particles on the surface layers. In further studies surface roughness of such samples could be investigated following a sequence of sanding process to improve their surface qualities.

Nondestructive bending strength testing of wood wool cement board from some fast growing species using stress wave velocity method Lina Karlinasari; Muhammad F Ikhsan; Dede Hermawan; Akhiruddin Maddu; Anita Firmanti
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 9, No 2 (2011): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The nondestructive testing using stress wave velocity method is known as most important tool to be used in quality control purposes. The aim of this study was to investigate the stress wave velocity (SWV) and to determine correlation between its velocity and dynamic MOE on static bending strength properties (MOE and MOR) of wood wool cement particleboards (WWCB). Thirty six WWCB particleboards from 3 tropical fast growing species (Paraserianthes falcataria, Maesopsis eminii, and Acacia mangium) and three different particleboards density of 0.5, 0.8 and 1.0 g cm-3 were made in this study. SWV value was determined using stress wave timer and it used to measure dynamic MOE. The measurement results of static bending strength method (MOEs and MOR) and by stress wave method were compared. The result showed the higher density of CBWW the higher of stress wave velocity. The WWCB particleboard of sengon possessed the highest value for both SWV and MOR. The dynamic MOE measured by stress wave method was about 80% higher than that static test. The good correlations were found between SWV and static MOE, MOR and it was statistically significant for linear regression model developed.Key words: fast growing species, nondestructive testing, static bending strength, stress wave velocity, wood wool cement particleboard

The Physical and Mechanical Properties of Glulam Made from Pine and Jabon Woods Andi SRD Lestari; Yusuf Sudo Hadi; Dede Hermawan; Adi Santoso
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 1 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Wood from plantation forests can be used to make glued laminated lumber (glulam) products for structural applications. Wood from two species, namely pine (Pinus merkusii) and jabon (Anthocephalus cadamba), and polyurethane and tannin mahogany adhesives (glue spread 200 g m-2) were used to manufacture glulams. The aim of this research was to determine the physical and mechanical properties of glulam made from pine and jabon woods. Wood densities of pine and jabon were 0.71 and 0.43 g cm-3, respectively. The glulams consisted of three layers of the same wood species, and samples were (3×6×120) cm3 in thickness, width, and length, respectively. The physical and mechanical properties of glulam were tested according to Japanese Agricultural Standard (JAS) 234-2007. The results showed that glulam made from pine met the standard for modulus of elasticity and modulus of rupture (MOR) values. Glulam made from jabon wood fulfilled the standard for MOR, shear strength, and hot- and cold-water delamination tests. In the formaldehyde emission test, jabon glulam fulfilled the F*** (low emission) standard and pine glulam met the F**** (very low emission) standard according to JAS 234-2007.

Performance analysis of tetraploid striped catfish (Pangasianodon hypophthalmus) resulting from heat shock induction Prama Hartami; Odang Carman; Alimuddin Alimuddin; Muhammad Zairin Jr; Rahman Rahman; Dede Hermawan
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 8: No. 1 (April 2021)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v8i1.3828

Striped catfish tetraploid induction through heat shock that carried out in this study is not intended to produce on growth fries.But to form a broodstock to produce triploid on growth fries through cross breeding without any physical shock induction process.The fries from the heat shock induction in the previous study were screened or selected by observing the maximum number of nucleoli in fin cells.The number of tetraploid individuals used in the performance test was 105 which were placed in three different concrete tanks.The results showed that the growth of tetraploid striped catfish was more significant than diploid with a difference in the daily weight percentage about 0.497% and 0.158% for length but insignificant differences in FCR and SR.In gonadal development based on histological observations, it was shown that each tetraploid and diploid both male and female striped catfish were at the same level of gonadal maturity.Female gonads were at the previtellogenic oocytes and vitellogenic oocytes, but males are dominated at the stage of spermatocytes and spermatozoa.This histology also shows us that the female gonad was still at the development stage, while the male had entered the mature stage and ready to be spawned.

Persepsi Petani Terhadap Usahatani Lahan Pekarangan Dede Hermawan; Agus Yuniawan Isyanto; Budi Setia
Jurnal Ilmiah Mahasiswa Agroinfo Galuh Vol 8, No 3 (2021): September 2021
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/jimag.v8i3.5805

Alih fungsi lahan yang meningkat dari lahan pertanian menjadi non pertanian dinilai sudah tidak terkendali, menyusul pesatnya sector industri dan pemukiman di Indonesia, Praktek alih fungsi lahan tersebut melahirkan satu kekuatiran tersendiri terhadap ketersediaan pangan masyarakat. Penelitian ini bertujuan untuk mengetahui mengetahui sejauh mana Tingkat Persepsi Petani terhadap Program Pemanfaatan Lahan Pekarangan di Desa Ciganjeng Kecamatan Padaherang Kabupaten Pangandaran. Jenis penelitian yang akan digunakan dalam penelitian ini adalah metode studi kasus. Pemilihan lokasi dilakukan secara sengaja (Purposive) dengan pertimbangan bahwa Desa Ciganjeng merupakan desa dengan warga yang banyak menerapkan pemanfaatan lahan pekarangan. Metode pengambilan sampel dilakukan dengan metode sampel acak sederhana (Simple Random Sampling). Dengan tingkat presisi 15% dari jumlah petani yang ada maka didapatkan hasil sebanyak 39 orang petani sebagai responden dari populasi sebanyak 275. Hasil penelitian menunjukkan presepsi petani terhadap usahatani lahan pekarangan adalah berpresepsi baik dengan total skor 1.413 dengan rata-rata skor 36,23 dari 10 pertanyaan yang diberikan kepada para petani yang dijadikan responden, Faktor-faktor yang mendorong petani dalam mengusahakan usahatani lahan pekarangan adalah adanya kesadaran dari diri para petani itu sendiri untuk memanfaatkan lahan pekarangan rumah mereka yang kosong untuk ditanami dengan berbagai jenis tanaman sayuran untuk memenuhi kebutuhan sehari-hari mereka bahkan dapat memberikan pendapatan dari hasil usahatani lahan perakarangan yang mereka kelola. Faktor-faktor eksternal yang dapat mendorong petani dalam menjalakan usahatani lahan pekarangan yaitu, adanya dorongan dari pihak pemerintahan setempat yaitu dari pihak Desa setempat dan BPP Kecamatan setempat yang dijalankan oleh penyuluh untuk merangkul, membina dan memberikan ilmu-ilmunya kepada para petani lahan pekarangan supaya dapat lebih berkembang lebih baik lagi.

The Effect of Pressing Temperature and Time on the Quality of Particle Board Made from Jatropha Fruit Hulls Treated in Acidic Condition Iswanto, Apri Heri; Febrianto, Fauzi; Hadi, Yusuf Sudo; Ruhendi, Surdiding; Hermawan, Dede
Makara Journal of Technology Vol. 17, No. 3
Publisher : UI Scholars Hub

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

The high of pH of jatropha fruit hulls causes the negative properties of particleboard made from this material. Adjusting the particle acidity and pressing conditions (temperature and time) is among the technical modifications available to improve this particleboard’s properties. Particle acidity has been adjusted in a previous research project, and immersing the particles in acetic acid was found to be the best treatment in this preliminary research. In order to improve the particleboard’s properties, an experiment was conducted to determine the best pressing temperature and time. The objective of the research was to evaluate the influence of pressing temperature and time on the physical and mechanical properties of the board. Jatropha fruit hulls were immersed in 1% acetic acid solution for 24 hours. UF resin was used as the adhesive in the amount of 10%. The pressing temperatures and times used in this research were 110 °C, 120 °C, and 130 °C for 8 and 10 minutes, respectively. The particleboards were tested to determine their physical and mechanical properties according to JIS A 5908-2003. The result showed that pressing at 130 °C for 10 minutes resulted in the best physical and mechanical properties. Increasing the pressing temperature at a constant time or increasing the pressing time at a constant temperature caused the particleboard to exhibit decreased water absorption. The thickness swelling and modulus of elasticity (MOE) of the particleboard did not fulfil JIS A 5908-2003.

Co-Authors Abdillah, Imam Busyra ADI SANTOSO Adi Santoso Agus Yuniawan Isyanto Ahmad Syahrir Aisyah, Syifa Akhiruddin Maddu Alessandro Geovani Damanik Alfarisi, Muhammad Tsalman Algifari, M. Alimuddin Alimuddin Andi SRD Lestari Anita Firmanti Apri H Iswanto Apri Heri Iswanto Apri Iswanto Apri Iswanto, Apri Astari, Lilik Bagus MARTIANTO Bambang Subiyanto Bernadeta Ayu Widyaningrum Bernadeta Ayu Widyaningrum Budi Setia Deni Purnomo Deni Purnomo Deni Purnomo Deni Zulfiana Dimas Triwibowo Elfrida Ratnawati Endang Sukara Fathur Rohman, Muhammad Iqbal Fauzi Febrianto Fauzi, Habal Fauziah, Rizkia Fazhar Akbar Firda A. Syamani Firda Aulya Syamani Fisimar, Farhan Al Gustan Pari Gustan Pari Gustan Pari Hakim, Mizanul Heni Pujiastuti Hidayat, Danih Jian Ikhsan Guswenrivo Iman Hidayat Ismadi Ismadi Ismadi Ismail Budiman Ismail Budiman Ismail Budiman Jajang Suryana Jajang Sutiawan Jajang Sutiawan Jajang Sutiawan Kenji Umemura Khairun Hidayat Khoirunnissa, Khoirunnissa Kurnia Wiji Prasetiyo Kurnia Wiji Prasetyo Lina Karlinasari Lisman Suryanegara M. Farouq Iksan Madani, M Fikri Haikal Mangurai, Silvia Uthari Nuzaverra Mayang Maolana, Ikhsan Merici, Elfriyani Angela Muh Yusram Massijaya, Muh Yusram Muhammad Agus Muljanto Muhammad F Ikhsan Muhammad Firdaus Muhammad Sadir Muhammad Y Massijaya Muhammad Zairin Jr Munadian, Munadian Murni Handayani Mustamu, Sofia Naresworo Nugroho Narto Nijar, Afnan Farhan Nofrisman Jaya Putra Zendrato Nurhaida, . Odang Carman Pari, Rohmah Prama Hartami Ramadani, Arfah Ramadhan, Dikri Ramadhan, Risan Rani Andriani, Rani Riska Surya Ningrum Robi’atul Utami Aini Rohny Setiawan Maail Rosa, Tina Salim Hiziroglu Sasa Sofyan Munawar Sasa Sofyan Munawar Siti Nursaadah, Siti Sopyan, Alif Wahyu Stafian Nisa, Rihab Subyakto Subyakto Subyakto Subyakto Subyakto Subyakto Subyakto Subyakto Suci Mardhatillah Sudarmanto Sukirno Sukirno Sukma S. Kusumah Sukma Surya Kusumah Sukma Surya Kusumah Sukma Surya Kusumah Sukma Surya Kusumah suratmi, tri Surdiding Ruhendi Surdiding RUHENDI Surdiding Ruhendi Syamani, Firda Aulya Triguna, M Ivan Wida Banar Kusumaningrum Yunia Frida Adelka Yusuf Hadi Yusuf Hadi, Yusuf Yusuf Sudo Hadi

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