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All Journal Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Jurnal Ilmiah Mahasiswa Teknik Kebumian JURNAL PENDIDIKAN, SAINS DAN TEKNOLOGI
Nasrullah RCL
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Humanities Computer Science & IT Earth & Planetary Sciences Education Engineering Mathematics Social Sciences Other

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Acetosolv pulping modeling of oil palm frond fibers Nasrullah RCL; I. Mazlan
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 1, No 2 (2011): Engineering
Publisher : Syiah Kuala University

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Abstract

Oil palm frond  fibers were pulped using acetosolv pulping in laboratory scale batch digester. A central composite desigh was used to investigate the process and to study the effect of its variables on pulp quality and yield. A second order polynomial regression model, using three in dependent process variables, was found to be appropriate for describing  acetosolv pulping oil palm fibers. The overall pulping conditions, which maximize yield while subject to a restriction of kappa number 19.93 were estimated at pulping time of 130 mins, a pulping temperature of 153 oC, AcOH of 85 %  and HCl of 0.25 %
Evaluasi Ketercapaian Produksi Batugamping crusher Sawangan di PT. Sinar Tambang Arthalestari yudi Saputra; Nasrullah RCL; Haqul Baramsyah
Journal of Geosciences, Mining Engineering, and Technology Vol 6, No 2 (2022): Jurnal Ilmiah Mahasiswa Teknik Kebumian
Publisher : Jurusan Teknik Kebumian Fakultas Teknik Universitas Syiah Kuala

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ABSTRAKTarget produksi batugamping PT. SinarTambang Arthalestari yaitu 8.876 ton/hari, nyata nya pada bulan Oktober hanya tercapai 319 ton/jam atau sekitar 4.309 ton/harihanyabarusetengahdari yang direncanakan. Maka dari itu perlu adanya penambahan pengumpanan sebanyak 340 ton/jam atau penambahan material sebanyak 17 kali tiap jamnya oleh dumptruck, sehingga akan tercapai target produksi yang direncanakan. Karena tingginya kadar air batugamping hasil dari front penambangan maka akan sering membuat crusher mati, ini merupakan salah satu hambatan yang mengakibatkan tidak tercapainya target produksi PT. Sinar Tambang Arthalestari, sehingga untuk mengurangi hambatan tersebut perlu juga dilakukan blending material pada saat dumptruck dumping di hopper dengan perbandingan 1:1:1:1 untuk setiap fron tpenambangan yaitu Sawangan Barat, Sawangan Timur, Undip Atas, danUndip Bawah agar mendapatkan kadar air yang relative lebih rendah atau dibawah 7% sehingga dapat meningkatkan produksi batugamping yang dari 319 ton/jam menjadi 340 ton/jam.
KARAKTERISTIK BIOKOMPOSIT SERAT KELAPA BERPENGUAT UNSATURATED POLYESTER RESIN DENGAN PENAMBAHAN GUGUS SILANE Marcella, Putri Andi; Fahmy, Putri Nadya; Mulana, Farid; RCL, Nasrullah
PENDIDIKAN SAINS DAN TEKNOLOGI Vol 11 No 4 (2024)
Publisher : STKIP PGRI Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47668/edusaintek.v11i2.1247

Abstract

Natural fibers are an alternative to synthetic materials that can be used as fillers in biocomposites due to their inherent biodegradability so that it has the potential to be put to good use. In this study, biocomposites were made using raw materials from natural waste, namely coconut fibers. These fibers are combined with unsaturated polyester resin. The addition of these functional groups can be done by using a coupling agent, it useful for strengthening the bond between the matrix and filler. The coconut fibre treatment process involved applying silane at various concentrations, either directly to the fibres or to the unsaturated polyester resin, using different methods to optimize adhesion. The samples will be analyze using Fourier Transform Infra-Red (FTIR) to determine their functional groups and physical properties analysis using predetermined standards. The addition of silane coupling agent makes the composite fibre-matrix interaction stronger, as indicated by the appearance of new peaks in the FTIR spectra. Furthermore, the results demonstrate that its inclusion can increase the density of composites across various treatments.
Co-Authors Fahmy, Putri Nadya Farid Mulana Haqul Baramsyah I. Mazlan Marcella, Putri Andi yudi Saputra