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All Journal Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Jurnal Purifikasi Prosiding Seminar Nasional Universitas Serambi Mekkah Teknologi dan Industri Pertanian Indonesia
Nasrul Arahman
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Agriculture, Biological Sciences & Forestry Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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 1 
Effect of Polymeric Additives on the Performances of Polyethersulfone Blend Hollow Fiber Membrane Bastian Arifin; Nasrul Arahman; Sri Mulyati; Yoshikage Ohmukai; Hideto Matsuyama
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 2 (2012): Engineering
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (535.67 KB)

Abstract

The article reported the preparation and modification of hydrophobicpolyethersulfone (PES) by blending the solution with hydrophilic additives Tetronic 304, Tetronic 704, Tetronic 1307, and Tetronic 908. Polymeric porous membranes are generally prepared by the phase separation of polymer solution. In this work, we prepared hollow fibre membrane by non-solvent induced phase separation (NIPS). Effect of molecular weight of surfactant added on the performance and characteristic of fabricated membrane were investigated. The control PES membrane has the highest contact angle, indicating thelowest hydrophilic. With addition of surfactant Tetronic in the polymer blend hollow fibre membrane, the water contact angle decreased indicates that the membrane surface is more hydrophilic. Scanning electron microscopy (SEM) images for all of the membrane showed the structure of fibre with finger-like macro voids through the cross-section. The sponge-type of structure in the centre path of original membrane was disappearing with addition of Tetronic. Ultrafiltration experiment results showed that water permeability washighest with addition of Tetronic with lowest molecular weight. According to thecharacteristics of resulting membrane such as hydrophilicity, ultrafiltration performance, and pores structure, surfactant Tetronic was a good additive to produce hydrophilic membrane for drinking water application
PEMBUATAN DAN UJI KARAKTERISASI MEMBRAN SERAT BERONGGA POLIETERSULFON UNTUK PROSES PEMURNIAN AIR Nasrul Arahman
Purifikasi Vol 10 No 2 (2009): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v10.i2.176

Abstract

Polymeric porous membranes are generally prepared by the phase separation of polymer solution. In this work, hollow fiber membrane was prepared by nonsolvent induced phase separation (NIPS). Effect of addition of surfactant Tetronic on the performance and characteristic of resulting membrane were investigated. The control PES membrane has the highest water contact angle, indicating the lowest hydrophilic. With addition of surfactant Tetronic in the polymer blend hollow fiber membrane, the water contact angle decreased indicates that the membrane surface is more hydrophilic. Scanning electron microscopy (SEM) images for all of the membrane showed the structure of fiber with finger-like macrovoids through the cross-section. The sponge-type of structure in the center path of original membrane was disappeared with addition of Tetronic. Ultrafiltration experiment results showed that water permeability was increased with addition of surfactant Tetronic. According to the characteristics of resulting membrane such as hydrophilicity, ultrafiltration performance, and pores structure, surfactant Tetronic was a good additive to produce hydrophilic membrane for drinking water application.
UJI KEMAMPUAN MEMBRAN SELULOSE ASETAT SEBAGAI MEDIA FILTER (MIKROFILTRASI) TERHADAP PENYISIHAN BAKTERI ESCHERICHIA COLI PADA PROSES PEMURNIAN AIR Nasrul Arahman
Purifikasi Vol 5 No 2 (2004): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.727 KB) | DOI: 10.12962/j25983806.v5.i2.309

Abstract

Membran bertekanan rendah dengan ukuran pori 0,01- 10 mm mampu menghilangkan suspended solid, minyak, bakteri, dan berbagai impuritis lainnya dari air baku. Hasil penelitian diperoleh adanya pengaruh tekanan operasi, kondisi pH, konsentrasi SS, dan periode operasi terhadap kinerja proses membran mikrofiltrasi. Efisiensi penyisihan Escherichia coli maksimum diperoleh 99,996% pada tekanan operasi 1.00 Kg/Cm2; 99,999 % pada pH 6; dan 99,998 % pada SS 100 mg/L. Fluks maksimum diperoleh sebesar 82,032 L/m2jam pada tekanan operasi 1,25 Kg/Cm2; 68,074 L/m2jam pada pH 2; 65,250 L/m2jam pada SS sebesar 20 mg/L.
MODIFIKASI MEMBRAN POLYETHERSULFONE (PES) MENGGUNAKAN PELARUT NORMAL METHYL PYROLYDONE (NMP) SECARA NON-SOLVENT INDUCE PHASE SEPARATION (NIPS) Umi Fathanah; Izarul Machdar; Medyan Riza; Nasrul Arahman; Mirna Rahmah Lubis; Mukramah Mukramah
Prosiding Seminar Nasional USM Vol 2, No 1 (2019): Semnas Multidisiplin Ilmu
Publisher : Universitas Serambi Mekkah

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Abstract

Clean water is a natural resource which is indispensable, due to the increase of population, water demand is also increasing. so that technology is needed in water treatment to satisfy the needs of clean water. Membrane separation technology is a technology that has grown rapidly in addressing the problems of water treatment. The purpose of this study was to determine the characteristics and performance of Polyethersulfone (PES) membranes modified with magnesium hydroxide or Mg(OH)2 and modification using chitosan. Membrane preparation was carried out by the phase inversion method, using an 18 wt% PES polymer modified with the addition of 0.2 wt% of Mg(OH)2, and modification using 0.2 wt% of chitosan. Furthermore, it was dissolved in N-Methyl pyrrolidone (NMP) as a solvent and the dope solution was stirred for 24 hours until it was homogeneous. Membrane characterization includes functional group analysis and measurement of the membrane water contact angle. Whereas membrane performance testing is done through permeability measurement and membrane rejection using a dead end ultrafiltration module. The results showed that the hydroxyl group (-OH) contained in Mg(OH)2 and chitosan were able to improve the hydrophilicity of the PES membrane. The membrane permeability coefficient modified with Mg(OH)2 gives a value of 8.236 L/m2.h.bar, while modifying the membrane using chitosan produces a value of 6.237 L/m2.h.bar. Both of them experience an increase compared to pure PES membrane without modification that has a permeability value of 4.123 L/m2.h.bar.
Penghambatan Peningkatan Kadar Asam Lemak Bebas (Free Fatty Acid) pada Buah Kelapa Sawit dengan Menggunakan Asap Cair Teuku Maimun; Nasrul Arahman; Fikriatul Arifah Hasibuan; Putri Rahayu
Jurnal Teknologi dan Industri Pertanian Indonesia Vol 9, No 2 (2017): Vol.(9) No.2, October 2017
Publisher : Agricultural Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (919.951 KB) | DOI: 10.17969/jtipi.v9i2.8469

Abstract

Abstract                                                                        One cause of the increase in free fatty acids (FFA) in Crude Palm Oil (CPO) is the activity of lipase-producing microorganisms in the oil palm fruit. Lipase is a biocatalisator which accelerate oil-hydrolysis reaction. High Free Fatty Acid Levels (FFA) will caused rancidity, change the taste and color of the oil. To solve this problem, post-harvest palm fruits should treat with some special treatment, e.g. addition of anti-microbial material, such as liquid smoke The purpose of this study was to determine the effect of liquid smoke on oil palm fruit, the inhibition of elevated levels of free fatty acids (FFA) on CPO. The factors reviewed in this study is the concentration of liquid smoke used; 5, 15, and 25% and the standing time; 12, 16 and 20 hours. The parameters observed in this study are free fatty acids (FFA), water, and impurities. The results showed that the higher the concentration of liquid smoke added, the higher inhibition of oil hydrolysis. CPO levels of FFA decreased at approximately 0,03 to 0,37% after the addition of liquid smoke. Highest inhibition on ALB increase was obtained in the treatment of the sample with the addition of 25% liquid smoke and 12 hours of standing time, which is 2,46%. Keywords: Crude Palm Oil (CPO), Free Fatty Acid (FFA), Water, Impurities, Liquid Smoke.Abstrak       Salah satu penyebab peningkatan asam lemak bebas (ALB) di dalam Crude Palm Oil (CPO) adalah, karena adanya aktivitas mikroorganisme penghasil lipase di dalam buah kelapa sawit. Lipase merupakan biokatalisator yang mempercepat reaksi hidrolisis minyak. Kadar Asam Lemak Bebas (ALB) yang tinggi menyebabkan ketengikan, perubahan rasa dan warna pada minyak. Untuk mengatasi masalah ini, buah kelapa sawit perlu diberi perlakuan khusus, yaitu penambahan bahan anti mikroba pada buah kelapa sawit pasca panen, salah satunya adalah asap cair. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan asap cair pada buah kelapa sawit, terhadap penghambatan peningkatan kadar asam lemak bebas (ALB) pada CPO. Adapun faktor yang ditinjau dalam penelitian ini adalah konsentrasi asap cair yang digunakan, yaitu 5, 15, dan 25% dan waktu pendiaman, yaitu 12, 16, dan 20 jam. Parameter yang diamati dalam penelitian ini antara lain, asam lemak bebas (ALB), air, dan kotoran. Hasil penelitian menunjukkan bahwa semakin tinggi konsentrasi asap cair yang ditambahkan, maka penghambatan hidrolisis minyak semakin tinggi. Kadar ALB pada CPO yang dihasilkan menurun sekitar 0,62 – 2,55% setelah penambahan asap cair. Penghambatan peningkatan ALB tertinggi diperoleh pada perlakuan sampel dengan penambahan 25% asap cair dan waktu pendiaman 12 jam, yaitu 2.46%. Kata kunci : Crude Palm Oil (CPO), Asam Lemak Bebas (ALB), Air, Kotoran (Impuritis), Asap cair (Liquid Smoke)
Co-Authors Bastian Arifin Fikriatul Arifah Hasibuan Hideto Matsuyama Izarul Machdar Medyan Riza Mirna Rahmah Lubis Mukramah Mukramah Putri Rahayu Sri Mulyati Teuku Maimun Umi Fathanah Yoshikage Ohmukai