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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 JAREE (Journal on Advanced Research in Electrical Engineering) 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
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Public Health Social Sciences Transportation Other

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PENINGKATAN DAYA TAHAN RAMBAT API KAYU LAPIS DENGAN CARA PELABURAN NATRIUM SILIKAT PADA VENIR Purwanto, Djoko; Arhamsyah, Arhamsyah
Jurnal Riset Industri Hasil Hutan Vol 1, No 2 (2009)
Publisher : Kementerian Perindustrian

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Abstract

Guna memperbesar daya tahan rambat api pada kayu lapis, dilakukan pelaburan venir muka (face) dan belakang (back) menggunakan natrium silikat pada konsentrasi 30%, 40% dan 50% sebanyak 2 dan 4 kali ulangan. Dari hasil penelitian diperoleh bahwa pelaburan menggunakan natrium silikat dalam konsentrasi 50% sebanyak 4 kali ulangan menghasilkan nilai daya tahan rambat api yang terbaik atau rata-rata 68,08% dengan nilai retensi 0,13 gr/cm3, sedangkan kadar air dan keteguhan rekatnya  adalah 10,60% dan 9,74 kg/cm2. Hasil ini memenuhi persyaratan Standar Nasional Indonesia 01-05.2/1999. Perlakuan tanpa pelaburan (blanko) menghasilkan nilai daya tahan rambat api rata-rata 28,95%, kadar air 10,83% dan keteguhan rekat 13,78 kg/cm2.
BRIKET BAHAN BAKAR DARI LIMBAH TEMPURUNG KELAPA SAWIT (Elaeis guineensis Jacq) Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 2, No 1 (2010)
Publisher : Kementerian Perindustrian

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Abstract

Limbah tempurung kelapa sawit untuk briket bahan bakar. Perlakuan yang digunakan yaitu kehalusan serbuk (7 mesh, 16 mesh dan 25 mesh), perlakuan tekanan kempa (3 ton, 5 ton dan 7 ton), dan perlakuan perekat (2,5% dan 5%). Hasil penelitian yang diperoleh kehalusan serbuk 7 mesh menghasilkan nilai kalori lebih besar dan kadar abu lebih rendah dibandingkan 16 mesh dan 25 mesh. Tekanan kempa 7 ton dan perekat 5% menghasilkan kekuatan tekan lebih besar dan kadar air lebih rendah dibandingkan tekana kempa 3 ton dan 5 ton serta perekat 2,5%. Kadar sulfur briket tempurung kelapa sawit adalah rata-rata negatif.
PENINGKATAN KENAMPAKAN SERAT DAN WARNA BEBERAPA JENIS KAYU KURANG DIKENAL UNTUK BAHAN MEBEL Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 2, No 1 (2010)
Publisher : Kementerian Perindustrian

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Abstract

Improved performance of fibers and colors some non commercial timber species for furniture two materials. This study used three types of non commercial wood were  Lua (Ficus glomevata Roxb), Tarap (Arthocarpus sp) and  Kambang (Goniothalamus sp). Finishing materials used Poly Urethane (PU), Nitro Cellulose (NC), and Antique Finish (AF). Number of spray to finishing material is one time and two times. Results showed that treatment of the finishing process using PU, NC and AF can increase the value of fiber and color performance is quite interesting and attractive, althouht it was decreasing of brightness a decrease in brightness of colors. Spraying of finishing materials one time and two times the power is not obtained by sticking a significant difference. The using of finishing materials to produce type PU adhesive power is better than NC and AF.Keywords: non commercial wood, fibre, colors
PEMANFAATAN KAYU AKASIA MANGIUM (Acacia mangium Willd) UNTUK MEBEL Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 4, No 1 (2012)
Publisher : Kementerian Perindustrian

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Abstract

Timber Acacia mangium (Acacia mangium, Willd) for Furniture. The study aims to determine the mechanical and physical properties and the decorative value (color and fiber) wood of acacia mangium with using finishing materials. This type of finishing material used is ultran lasur natural dof ,ultran lasur classic teak, aqua politur clear dof, aqua politur akasia dan aqua politur cherry. After finishing the wood is stored for 3 months. Test parameters were observed, namely, physical and mechanical properties of wood, adhesion of finishing materials, color and appearance of the fiber, and timber dimensions expansion. The results showed that the mechanical physical properties of acacia wood qualified SNI. 01-0608-89 about the physical and mechanical properties of wood for furniture, air dry the moisture content from 13.78 to 14.89%, flexural strength from 509.25 to 680.50 kg/cm2, and compressive strength parallel to fiber 342.1 - 412.9 kg/cm2. Finishing the treatment process using five types of finishing materials can increase the decorative value (color and fiber) wood. Before finishing the process of acacia mangium wood has the appearance of colors and fibers and less attractive (scale scores 2-3), after finishing acacia wood fibers have the appearance of colors and interesting and very interesting (scale 4-5).Keywords: mangium wood, mechanical properties, decorative value, finishing, furniture.
SIFAT FISIK MEKANIK PAPAN DARI LIMBAH KULIT KAYU GALAM Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 5, No 2 (2013)
Publisher : Kementerian Perindustrian

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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.
PENGARUH TEKANAN KEMPA DAN KONSENTRASI PEREKAT TERHADAP SIFAT BIOBRIKET DARI LIMBAH TEMPURUNG SAWIT Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 7, No 2 (2015)
Publisher : Kementerian Perindustrian

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Abstract

Palm shell waste has not been used optimally. Utilization can be as fuel in the form of biobriquette. The purpose of this research studied the effects of pressure hydraulic and adhesive concentration on biobriquette properties. Research includes palm shell crushed, screened with fineness 7 mesh, mixed with amylum adhesive solution 2.5% and 5%. Printed in diameter of 3 cm and a height of 7 cm. The emphasis with the pressure of 3 tons, 5 tons and 7 tons. Biobriqutte dried naturally. Quality analysis with refers to the National Standardization Agency (1994). Results pressure 3 tons and adhesive concentration of 5% produces the best with sulfur levels of negative value and calorific 4442.78 cal / g and qualify for household fuels. Treatment interactions pressure and concentration of adhesive very significant effect on moisture, ash, carbon, volatile matter content, density and compressive strengtth biobriqutte.Keywords:  palm shell,  consentration of adhesive, pressure hydraulics, biobriquette
PENGARUH SENYAWA BOR PADA PROSES PEMBUATAN KAYU LAPIS TERHADAP KETEGUHAN REKAT DAN UJI BAKAR Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 1, No 2 (2009)
Publisher : Kementerian Perindustrian

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Abstract

Penambahan senyawa bor (natrium tetraborat dan asam borat) pada proses pembuatan kayu lapis dengan cara pelaburan pada venir  face dan venir back sebanyak      2 kali dan 4 kali ulangan. Konsentrasi 30%, 40% dan 50%. Tujuan penelitian ini adalah untuk memperlambat proses pembakaran atau mengurangi nilai uji bakar pada kayu lapis.  Penelitian menunjukkan pelaburan venir sebanyak 4 kali menggunakan senyawa bor dengan konsentrasi 50% dapat memperlambat pembakaran atau menurangi nilai uji bakar sebesar 18,15%.  Penambahan konsentrasi dan jumlah pelaburan berpengaruh sangat nyata terhadap retensi dan uji bakar, namun tidak mempengaruhi pada kadar air dan keteguhan rekat kayu lapis.
ANALISA JENIS LIMBAH KAYU PADA INDUSTRI PENGOLAHAN KAYU DI KALIMANTAN SELATAN Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 1, No 1 (2009)
Publisher : Kementerian Perindustrian

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Abstract

Industri penggergajian kayu menghasilkan limbah sebesar 40,48 %  volume, terdiri atas sebetan (22,32 %), potongan kayu (9,39 %) dan serbuk gergaji (8,77 %). Sedangkan limbah industri kayu lapis sebesar 54,81 % volume dengan rincian potongan dolok (3,69 %), sisa kupasan dolok (18,25 %), venir basah (8,50 %), penyusutan (3,69 %), venir kering (9,60 %), pengurangan tebal (venir kering) (1,90 %), potongan tepi kayu lapis (3,90 %), serbuk gergaji (2,2 %) dan debu kayu lapis (3,07 %). Pemanfaatan pada kedua jenis limbah tersebut antara lain sebagai bahan bakar, inti papan blok, papan blok, papan partikel, dan sambungan venir inti, atau venir belakang kayu lapis.
PENGOLAHAN LIMBAH CAIR KELAPA SAWIT MENGGUNAKAN REAKTOR UAF (UPFLOW ANAEROBIC FILTER) Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 5, No 1 (2013)
Publisher : Kementerian Perindustrian

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Abstract

The treatment of waste water palm oil industry using  UAF reactor. The research purpose was to make a prototype that includes a wast ewater tank, a sedimentation tank  and UAF reactor, and then trial the waste water treatment. Filters used were pieces of PVC pipe, and at the bottom of the UAF reactor filled with sludge. To quickly decrease waste water TSS, the sedimentation addition 0.5% PAC (Poly Aluminium Chloride). Acclimatization process doing duration 30 days, and the waste water treatment process at UAF reactor doing duration 24 hours, then doing  analyzed the raw waste water quality before and after the processing of the reactor. Results of analysis of wastewater before treatment is pH 7.36; BOD 980 ppm; COD 1960.6 ppm ; TSS 50 89 ppm ; fatty oil 43 ppm; NH3-H 2,80 ppm and N-Total 246.64 ppm. The results of waste water treatment for 24 hours in the UAF reactor is pH 6.64; BOD 28.84 ppm; COD 56.94 ppm; TSS 48 ppm; fatty oils <1 ppm; NH3-N 0.082 ppm and N-Total 11.31 ppm.Keywords: waste water, palm oil, anaerobic, UAF reactor, tube PVC                                              
PAPAN SAMBUNG TEMPEL DARI LIMBAH SEBETAN KAYU KELAPA (Cocos nucifera L.) Cahyana, Budi Tri; Purwanto, Djoko
Jurnal Riset Industri Hasil Hutan Vol 1, No 1 (2009)
Publisher : Kementerian Perindustrian

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Abstract

Pengolahan limbah sebetan dari penggergajian kayu kelapa dengan sistim  penyambungan dan penggabungan atau laminasi. Kayu sebetan yang telah dikeringkan dibuat strip dengan ukuran 1 cm x 4 cm x 25 cm dibuat sambungan jari dan bangku dengan menggunakan perekat PVAc. Hasil penelitian menunjukkan bahwa  keteguhan tekan  dan keteguhan lentur paling tinggi pada perlakuan sambungan jari dengan berat labur 200 gr/cm2  yaitu  231,853 kg/cm2 dan 195,809 kg/cm2. Keteguhan tekan sambungan jari  dengan berat labur 175 gr/cm2 dan 200 gr/cm2 memenuhi syarat bahan baku bangunan struktural. Dan  nilai keteguhan lentur sambungan jari  dengan berat labur 175 gr/cm2 dan 200 gr/cm2 tidak memenuhi syarat untuk bahan bangunan struktural. Keteguhan tekan, keteguhan lentur dan delaminasi dipengaruhi dari bentuk sambungan dan berat labur. Bentuk sambungan jari  memiliki keteguhan tekan dan keteguhan lentur lebih tinggi dibanding bentuk sambungan bangku.
Co-Authors Achmad Jazidie Adrie Sentosa Ainuddin, Emha Amelia Kusuma Indriastuti Amelia Kusuma Indriastuti, Amelia 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 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