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All Journal International Journal of Electrical and Computer Engineering MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik ITS JURNAL KARYA TEKNIK SIPIL IPTEK Journal of Proceedings Series TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Jurnal Penelitian Hasil Hutan Jurnal Ilmiah Kursor Journal of Engineering and Technological Sciences Jurnal Riset Industri Seminar Nasional Informatika (SEMNASIF) Prosiding Forum Studi Transportasi Antar Perguruan Tinggi Jurnal Riset Industri Hasil Hutan Seminar Nasional Teknologi Informasi Komunikasi dan Industri Gelar : Jurnal Seni Budaya JAVA Journal of Electrical and Electronics Engineering Fairness and Justice: Jurnal Ilmiah Ilmu Hukum Indonesian Journal of Electrical Engineering and Computer Science Indonesia Berdaya JAREE (Journal on Advanced Research in Electrical Engineering) Jurnal Pengabdian Masyarakat Indonesia Jurnal Nasional Teknik Elektro dan Teknologi Informasi Sewagati Journal of Contemporary Law Studies Indonesian Journal of Law and Justice
Djoko Purwanto
Departemen Teknik Elektro Institut Teknologi Sepuluh Nopember
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PENCEGAHAN SERANGAN JAMUR BIRU PADA KAYU KARET DI LOKASI PENEBANGAN Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 1, No 2 (2009)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (149.941 KB)

Abstract

Pencegahan serangan jamur biru pada kayu karet gelondongan di lokasi penebangan, dengan cara pelaburan pada bagian ujung dan pangkal permukaan kayu, menggunakan farmay plus dan koppers formula 7. Kemudian kayu dibiarkan di lokasi penebangan. Hasil penelitian menunjukkan bahwa pelaburan menggunakan farmay plus dalam konsentrasi 0,5 sampai 2% secara teknis cukup efektif untuk mencegah serangan blue stain selama 15 sampai 40 hari. 
FINISHING KAYU KELAPA (Cocos nucifera, L) UNTUK BAHAN INTERIOR RUANGAN Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 3, No 2 (2011)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (138.109 KB)

Abstract

Finishing of coconut wood use the polyurethane, melamine formaldehyde and ultran vernis with the spraying 1 times and 2 times. Research target for the change of performance of colour and fibre of coconut wood more interesting. Result of research indicate that the use of substance of finishing polyurethane, melamine formaldehyde and ultran vernis can change the colour and fibre. Before coconut wood done  finishing have the black chocolate colour  and  fibre pattern rather dark. After doing finishing colour become the squeezing chocolate, fibre pattern rather look and flatten.Keywords: coconut wood, finishing, interior materi, bahan interior, polyurethane, melamine formaldehide, ultran vernis.
PENGARUH UKURAN PARTIKEL TEMPURUNG SAWIT DAN TEKANAN KEMPA TERHADAP KUALITAS BIOBRIKET Purwanto, Djoko
Jurnal Penelitian Hasil Hutan Vol 33, No 4 (2015): 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.2015.33.4.303-313

Abstract

Industri kelapa sawit dalam kapasitas 100 ribu ton bahan baku per tahun akan  menghasilkan sekitar 6 ribu ton limbah tempurung kelapa sawit. Limbah padat ini pemanfaatannya belum optimal yaitu sebagai bahan bakar boiler dan pengeras jalan disekitar pabrik. Penelitian ini bertujuan untuk mengetahui pengaruh ukuran partikel  tempurung sawit dan tekanan kempa terhadap kadar air, kadar abu, zat terbang, kadar karbon, kalori, kerapatan dan kuat tekan. Prosedur penelitian meliputi: pengeringan secara alami tempurung kelapa sawit, penghancuran tempurung kelapa sawit, penyaringan serbuk tempurung kelapa sawit, pencampuran dengan larutan kanji 5%, pencetakan dan/ pengepresan, pengeringan  secara alami biobriket,  dan analisa kualitas biobriket. Perlakuan yang digunakan yaitu ukuran partikel tempurung sawit yang meliputi 7 mesh, 16 mesh, 25 mesh, dan tekanan kempa yang meliputi 3 ton, 5 ton, 7 ton. Setiap perlakuan diulang 3 kali. Hasil penelitian diperoleh kadar air berada di antara 4,15 - 9,06%;. kadar abu berada di antara 1,68 – 6,19%; kadar karbon berada di antara 7,57 – 19,55%; kadar zat terbang berada di antara 70,49 – 81,95%; kadar sulfur semua negatif; nilai kalor berada di antara 4218,17 – 4442,34 kal/g; kerapatan berada di antara 0,69 – 0,87g/cm3 ; dan kuat tekan berada di antara 0,26 – 5,36 kg/cm2. Ukuran partikel tempurung kelapa sawit 16 mesh dan tekanan kempa 3 ton menghasilkan nilai kalor 4405,15 kal/g, kadar sulfur negatif dan kadar air 7,20% memenuhi persyaratan standar mutu dan karakteristik briket untuk rumah tangga (Kementerian Energi dan Sumber Daya Mineral/ KESDM, 1993).
ARANG DARI LIMBAH TEMPURUNG KELAPA SAWIT (Elaeis guineensis Jacq) Purwanto, Djoko
Jurnal Penelitian Hasil Hutan Vol 29, No 1 (2011): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2151.516 KB) | DOI: 10.20886/jphh.2011.29.1.57-66

Abstract

Penelitian bertujuan untuk mengetahui pengaruh temperatur dan waktu pengarangan terhadap mutu arang tempurung kelapa sawit. Proses pengarangan dilakukan pada temperatur 400C, 500C dan 600C dengan waktu pengarangan 2 jam, 3 jam dan 4 jam. Mutu arang yang baik dihasilkan pada temperatur 500 - 600C selama waktu pengarangan 2 - 3 jam dengan hasil nilai kalor 7.032,22 - 7.177,87 kal/g, kadar karbon 66,79 - 77,73%, kadar air 0,29 - 0,53%, kadar abu 7,90 - 16,44%, kadar sulfur negatif, dan kadar zat terbang 11,93 - 19,99%.
SIFAT PAPAN PARTIKEL DARI SERAT TANDAN KOSONG SAWIT DAN SERBUK KAYU DENGAN PEREKAT UREA FORMALDEHIDA (The Properties of Particle Board from Oil Palm Empty Fruit Bunches Fiber Sawdust with Urea Formaldehyde Resin) Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 8, No 1 (2016)
Publisher : Kementerian Perindustrian

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Abstract

A palm oil mill with a capacity of hundred thousand tons of fresh fruit bunches per year will produce palm fiber waste about 12,000 tons. Recently, the use of palm empty fruit bunches (OPEFB) fiber is as fuel for electricity generation in the industry. Palm fiber waste contains lignocellulose materials as a feedstock to particle board manufacture. The aim of this research is to evaluate the properties of particle board from a mixture of OPEFB fiber and sawdust. The ratio of OPEFB fiber and sawdust are 100% : 0%; 75% : 25%; 50% : 50%; 25% : 75% and 0% : 100%, plus urea formaldehyde adhesive in a concentration of 11%. The boards were pressed using a clamp pressure of 16 kg/cm2 for 15 minutes at a temperature of 110 – 120 0C. The testing methods and standards of physical properties (moisture contents, thickness swelling, density) and mechanical (modulus of elasticity/MOE, modulus of rupture/MOR, screw withdrawal and internal bond strengths) refers to the SNI. 03 – 2105 - 2006. The results showed that the particle board made from 100% OPEFB fiber produces modulus of elasticity/MOE 1594.88 kg/cm2; modulus of rupture/MOR 18.08 kg/cm2; screw withdrawal 31.34 kg/cm2 and internal bond strength 0.86 kg/cm2. The addition of sawdust for 50% can improve modulus of elasticity/MOE, modulus of rupture/MOR and internal bond strength.
Sifat Fisis dan Mekanis Papan Semen dari Serat Tandan Kosong Kelapa Sawit (The Physical and Mechanical Properties of Cement Board Made from Oil Palm Empty Fruit Bunches Fibers) Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 8, No 2 (2016)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (362.959 KB) | DOI: 10.24111/jrihh.v8i2.1966

Abstract

Oil palm empty fruit bunches (OPEFB) fiber were industrial waste that has not been widely used by the community, only stacked and cause odors that interfere with the surrounding environment. This research studied the utilization of OPEFB fiber for cement board products using cement as resin and CaCl2 as accelerator. Laboratory scale cement board made from OPEFB fiber were mixed with cement, and CaCl2. The composition of fiber and cement were 1:1, 1:1.5, 1:2, and CaCl2 variations were 0%, 1% and 3%. A mixture of fibers, cement and CaCl2 was compressed at the pressure of 4 ton for 24 hours. The cement boards were tested for physical and mechanical properties according to JIS A 5417-1992, and the results were compared to the requirements of the cement board JIS A 5417-1992. Cement board made from fiber and cement composition 1:1.5 and CaCl2 content 3% produced moisture content, thickness swelling, water absorption, density, modulus of rupture/MOR, modulus of elasticity/MOE and screw withdrawal strength that met the requirement of JIS A 5417-1992. The composition of fiber and cement and the variations of CaCl2 content produced significant effect on water content, water absorption, thickness swelling, modulus of rupture/MOR, modulus of elasticity/MOE and screw withdrawal strength on cement boards.Keywords : oil palm empty fruit bunches fiber, cement boards, physical and mechanical properties
Ekstraksi Zat Warna dari Kulit Kayu Galam (Melaleuca leucadendron Linn) dan Evaluasi dalam Pewarnaan Kain Satin (The Extraction of Natural Dyes from Galam (Melaleuca leucadendron Linn) Bark and The Evaluation on Satin Dye Application) Nintasari, Rinne; Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 8, No 2 (2016)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (243.299 KB) | DOI: 10.24111/jrihh.v8i2.2197

Abstract

      Galam bark has not been widely used, it was only stacked and burned. Tree bark usually contains lignocellulose and natural dye. This study aimed to evaluate the application of galam bark for natural dyes on fabric. Galam bark was extracted using soxhlet and maceration methods, with time and solvent extraction variations. The obtained natural dye was used for dyeing using lime and alum for fixation. The results showed that the soxhlet extraction with water as the solvent for 5 hours produced dye with pH value 7 (neutral) and color sharpness 21 PtCo. The soxhlet extraction with water as the solvent for 7 hours produced dye with pH 5 (acid) and the highest color sharpness 68 PtCo. The most favorable color (value 3.3) was obtained from the soxhlet extraction technique with alum fixation. The highest color adsorption value (1.95%) was obtained from the lime fixation process. The natural dye extracted from Galam bark produced color sharpness, dyes and color absorption that had not met the expected result.Keywords: galam bark, extraction, dye, fabric dyeing
VALIDASI PERANGKAT LUNAK SIMULASI ALIRAN DAN PEMBEKUAN PADA PROSES PENGECORAN DENGAN MATERIAL BESI COR FC 100 Taufiq, Husen; Purwanto, Djoko
Jurnal Riset Industri Vol 6, No 3 (2012): Pengembangan Industri Berbasis Hasil Tambang
Publisher : Badan Penelitian dan Pengembangan Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6890.254 KB)

Abstract

Telah dilakukan proses validasi perangkat lunak   simulasi aliran dan pembekuan pada proses pengecoran dengan material besi cor FC 100. Proses validasi perlu dilakukan karena sering terjadinya ketidaksesuaian antara hasil akhir produk coran dengan hasil simulasi perangkat lunak simulasi aliran dan pembekuan. Dengan proses validasi ini bertujuan penggunaan perangkat lunak simulasi aliran dan pembekuan dapat dioptimalkan. Proses validasi  meliputi dua tahap: Tahap (1) pembuatan benda uji melalui proses pengecoran. Proses pengecoran dimulai dari perancangan dan pembuatan pola benda uji dengan variasi Modulus (M) yaitu M=1 cm, M=1.4 dan M=2 cm, pembuatan cetakan dengan pasir silika dengan pengikat resin, dan pengecoran dengan material besi cor hipereutektik FC 100 (JIS G5501). Hasil penelitian pada tahap ini meliputi: hasil pengujian mikrostruktur perlit 80% dan ferit 20% grafit lamellar tipe C.  dan hasil pengujian uji tarik 141.3 N/mm2 sesuai standar JIS G5501 dan hasil uji visual  benda uji hasil cor dengan cara dipotong-potong diidentifkasi terjadinyacacat tuang berupa porositas pada benda dengan modulus(M) = 2 cm yang dicor pada suhu tuang 1420 0c danwaktu tuang 8 detik. Pada tahap (2) proses validasi perangkat lunak simulasi melalui tahapan: pemodelan 3D,proses Meshing, seting parameter simulasi yang disesuaikan dengan kondisi nyata pada saat pengecoran pada tahap sebelumnya meliputi : waktu tuang dan suhu tuang. Kemudian dilakukan iterasi simulasi sehingga hasil simulasi mendekati hasil uji visual benda uji. Hasil akhir validasi menunjukan bahwa parameter propertis termalcritical fraction solid (CFS)= 0.7 dan parameter koefisien perpindahan panas konveksi (h) = 500 W/m2K. adalah yang paling mendekati hasil visual coran benda uji. Kata kunci:  Validasi, FC 100(JIS G5501), perancangan coran, perangkat lunak simulasi aliran dan pembekuan, parameter simulasi
VALIDASI PERANGKAT LUNAK SIMULASI ALIRAN DAN PEMBEKUAN PADA PROSES PENGECORAN DENGAN MATERIAL BESI COR FC 100 Taufiq, Husen; Purwanto, Djoko
Jurnal Riset Industri Vol 6, No 3 (2012): Pengembangan Industri Berbasis Hasil Tambang
Publisher : Badan Penelitian dan Pengembangan Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6890.254 KB)

Abstract

Telah dilakukan proses validasi perangkat lunak   simulasi aliran dan pembekuan pada proses pengecoran dengan material besi cor FC 100. Proses validasi perlu dilakukan karena sering terjadinya ketidaksesuaian antara hasil akhir produk coran dengan hasil simulasi perangkat lunak simulasi aliran dan pembekuan. Dengan proses validasi ini bertujuan penggunaan perangkat lunak simulasi aliran dan pembekuan dapat dioptimalkan. Proses validasi  meliputi dua tahap: Tahap (1) pembuatan benda uji melalui proses pengecoran. Proses pengecoran dimulai dari perancangan dan pembuatan pola benda uji dengan variasi Modulus (M) yaitu M=1 cm, M=1.4 dan M=2 cm, pembuatan cetakan dengan pasir silika dengan pengikat resin, dan pengecoran dengan material besi cor hipereutektik FC 100 (JIS G5501). Hasil penelitian pada tahap ini meliputi: hasil pengujian mikrostruktur perlit 80% dan ferit 20% grafit lamellar tipe C.  dan hasil pengujian uji tarik 141.3 N/mm2 sesuai standar JIS G5501 dan hasil uji visual  benda uji hasil cor dengan cara dipotong-potong diidentifkasi terjadinyacacat tuang berupa porositas pada benda dengan modulus(M) = 2 cm yang dicor pada suhu tuang 1420 0c danwaktu tuang 8 detik. Pada tahap (2) proses validasi perangkat lunak simulasi melalui tahapan: pemodelan 3D,proses Meshing, seting parameter simulasi yang disesuaikan dengan kondisi nyata pada saat pengecoran pada tahap sebelumnya meliputi : waktu tuang dan suhu tuang. Kemudian dilakukan iterasi simulasi sehingga hasil simulasi mendekati hasil uji visual benda uji. Hasil akhir validasi menunjukan bahwa parameter propertis termalcritical fraction solid (CFS)= 0.7 dan parameter koefisien perpindahan panas konveksi (h) = 500 W/m2K. adalah yang paling mendekati hasil visual coran benda uji. Kata kunci:  Validasi, FC 100(JIS G5501), perancangan coran, perangkat lunak simulasi aliran dan pembekuan, parameter simulasi
SIFAT FISIK MEKANIK PAPAN DARI LIMBAH KULIT KAYU GALAM Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 5, No 2 (2013)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (223.446 KB) | DOI: 10.24111/jrihh.v5i2.1215

Abstract

Galam wood species (Melaleuca leucadendra) using for raw material bulding, charcoral, and energy. Galam bark wood waste has not been used. The purpose of research utilizing of waste Galam bark for board. Galam bark is cut into pieces with a length of 2 cm, 4 cm and 6 cm, then washed with water and dried naturally to moisture content below 7 %. Adhesives used poly vinyl acetate with a variation of 13 %, 16 %, and 19 % by weight of raw material. Cold pressing for 24 hours and a pressure of 15 kg/cm2. Parameters tested water content thickness swelling, density, modulus of elastisitas/MOE, modulus of rupture/MOR, screw withdrawal and tensile strength refers to the test metodhe SNI 03-2105-2006. The test results obtained water content between 13.59 to 15.52 %; thickness swelling between 5.85 to 20.65 %; density of between 0.38 to 0.90 gr/cm3; modulus of rupture / MOR between 8.62 - 56.12 kg/cm2 ; modulus of elasticity / MOE between 311.18 to 4022.33 kg/cm ; tensile strength between 0.16 - 0.55 kg/cm2; screw withdrawal strength between 30-70 kg. Bark size 6 cm long wood with a 19 % concentration of adhesive produced water content, thickness swelling, density, modulus of rupture / MOR, modulus of elasticity / MOE, screw withdrawal strength and tensile strength of the best.Keywords: galam, bark wood, board, physical mechanical.
Co-Authors Achmad Jazidie Adrie Sentosa Ahmad Ikhwan Setiawan, Ahmad Ikhwan Ainuddin, Emha Amelia Kusuma Indriastuti Amelia Kusuma Indriastuti, Amelia Amina Sukma Dewi Anas Maulidi Utama Anda Ferwira Andri Widihandoko Andrian, Muhammad Yunus Anifatul Faricha Arhamsyah Arhamsyah, Arhamsyah Ari Santoso Ari Santoso Ari Santoso Astria Nur Irfansyah Attamimi, Muhammad Bima Sena Bayu Dewantara Bonifatius, Dwi Hastjarja Kustijana Budhi Haryanto Budi Tri Cahyana, Budi Tri Budiman, Fajar Chastine Fatichah Dermawan, Dimas Imam Devy Kuswidiastuti Diah Kusumawati, Diah Elfrin P. Hsb. Enny Zulaika EPF Eko Yulipriyono, EPF Epf. Eko Yulipriyono Felix Gunawan Furqan Aliyuddien Gangsarestu, Muhammad Soleh Garudio Kusuma Aji Handry Khoswanto Hani Avrilyantama Hany Ferdinando Hari Agus Sujono Harianto Harianto Haris Hariza Ekarinda Helmy Widyantara Hendra Kusuma Hendro Juwono Irfansyah, Astria Nur Ismiyati Ismiyati Jamhari Jamhari Kami Hari Basuki Kami Hari Basuki Kelvin Liusiani Kusuma, Hendra Siswanto M. Rivai Mannarul Hidayah Muchammad Ainur Fahd Muchammad Ainur Fahd Muhammad Attamimi Muhammad Hilman Fatoni Muhammad Ichlasul Salik Muhammad Rivai Muhammad Rivai Muhammad Rivai Muhammad Yunus Andrian Muharom, Syahri Nanda, Muhammad Achirul Naysila, Novita Prajna Wirya Kencana Putra Purbaningtyas, Retno Utami Putra, Karisma Trinanda Rahayu, Vidya Windi Retno Tri Wahyuni Rinne Nintasari Riza Agung Rizki Anhar R.P. Ronny Mardianto Ronny Mardiyanto, Ronny Rudy Dikairono Ruth Johana Hutagalung Setiawardhana Setiawardhana Setiawardhana Sonny H. Suryani, Santy Diah Suwito Suwito Takayuki Nagai Taufiq, Husen Totok Mujiono, Totok Tri Arief Sardjono Try Yuliandre Pajar Uroidhi, Ali Wahyudi Kushardjoko Widodo Budiharto Widodo Budiharto Widodo Budiharto Yunardi, Riky Tri