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KARAKTERISTIK PAPAN PARTIKEL BERBAHAN SEKAM PADI DENGAN PENAMBAHAN PARAFIN Folmer Pardosi; Tamrin Latief; Filli Pratama
Jurnal Teknik Pertanian Sriwijaya Vol 1, No 1 (2012)
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (11.923 KB)

Abstract

The objective of this research was to analyze the physical and mechanical characteristics of particle board of different size of rice husks particle with the addition of paraffin.  The research used Factorial Completely Randomized Design that consisted of two treatment as factors, and each factor consisted of three levels.  Each combination of treatment was replicated three times.  The first factor was the size of rice husks particle (1.70 mm, 1.40 mm, 1.18 mm) and the second factor was the addition of paraffin (0%, 2%, 4%) based on dry weight of rice husks.  The parameters were the density, moisture content, thickness swelling, modulus of elasticity, modulus of rupture, and internal bond.  The results showed that the treatment combination between the particle size of 1.18 mm and the paraffin addition of 4% (A3B3) was the best treatment with the density of 438 kg/m3, moisture content of 9,04%, thickness swelling of 0,86%, modulus of elasticity of 28,33 N/mm2, modulus of rupture of 0,22 N/mm2, and internal bond of 0,12 N/mm2.  Keywords : Particle board, rice husk, paraffin
TheSimulation of Numerical Method of Finite Difference for Predicting the Distribution of Volumetric Water and Water Potential Tamrin Latief; . Hermantoro; Budi Indra Setiawan
Jurnal Keteknikan Pertanian Vol. 14 No. 3 (2000): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.014.3.%p

Abstract

This paper describes an application of n~rmerical method of finilsdzflerence for predicting the distribution of volumetric water (8) and water potential (v by using diffusity and conductivity approach. The result of current study showed that the parameters, volumetric water and water potential, correlated reversely. The trend of application of numerical method was similar to that of exact method. The simulation of parameters was not signiJcant. The reliability of models is still needed to test emperically.
Aquatic and Dry Land Weeds as Potential Renewable Fibers Resources for Paper Tamrin Tamrin; Filli Pratama; Rahmad Hari Purnomo; Nessia Davitri
Sriwijaya Journal of Environment Vol 2, No 2 (2017): Water As A Vital Resource for Life
Publisher : Program Pascasarjana Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (396.008 KB) | DOI: 10.22135/sje.2017.2.2.46-49

Abstract

Abstract: The investigation of aquatic and dry land weeds as fibers resources for paper making was carried out. The selected fiber resources of aquatic weeds were water hyacinth (Eicchornia crassipes) and water chestnuts (Eleocharis dulcis), and bladygrass (Imperata cylindrica) as the selected dry land weed. Research was designed as a factorial completely randomized design with two factors. The first factor was fibers origin (Eicchornia crassipes, Imperata cylindrica, Eleocharis dulcis) and the second factor was the fibers pulp slurry concentrations (30%, 50%, and 70% v/v). Results showed that the fibers origin and fibers pulp slurry concentration had significant effect on the tensile strength, mass density, water absorption, and frictional resistance of paper. The interaction between the fibers origin and fibers pulp slurry concentration had significant effect on tensile strength, frictional resistance, water absorption; but had no significant effect on mass density of paper. The paper that was made of 70% (v/v) of water hyacinth fiber pulp slurry showed the best characteristics with the tensile strength of 3.65 kgf mm-1, mass density of 0.87 g cm-3, water absorption of 0.235 g cm-2, and frictional resistance of 0.028 g cm-2.Keywords: water hyacinth, water chestnuts, bladygrass, paper.Abstrak (Indonesian): Penelitian tentang sumber serat dari gulma air dan lahan kering untuk pengolahan kertas telah dilakukan. Gulma air yang potensial sebagai sumber serat adalah eceng gondok (Eicchornia crassipes) dan purun tikus (Eleocharis dulcis); alang-alang (Imperata cylindrica) sebagai sumber serat dari gulma lahan kering. Penelitian ini menggunakan rancangan acak lengkap yang disusun secara factorial dengan dua faktor. Faktor pertama adalah jenis gulma (Eicchornia crassipes, Imperata cylindrica, Eleocharis dulcis) dan faktor ke dua adalah konsentrasi penambahan bubur serat (30%, 50%, and 70% v/v). Hasil penelitian menunjukkan bahwa jenis gulma dan konsentrasi penambahan bubur serat berpengaruh nyata (p<0.05) terhadap kekuatan tarik, massa jenis, absorpsi air dan ketahanan gesek. Interaksi antara jenis gulma dan konsentrasi penambahan bubur serat berpengaruh nyata terhadap kekuatan tarik, ketahanan gesek, abosrpsi air; tetapi berpengaruh tidak nyata terhadap massa jenis kertas. Kertas yang dibuat dari serat eceng gondok dengan konsentrasi bubur serat sebanyak 70% (v/v) menghasilkan kertas dengan sifat mekanik dan fisik terbaik dengan kekuatan tarik 3,65 kgf mm-1, massa jenis 0,87 g cm-3, absorpsi air 0,235 g cm-2, dan ketahanan gesek 0,028 g cm-2.Katakunci: eceng gondok, purun tikus, alang-alang, kertas.