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All Journal Jurnal Serambi Engineering Jurnal Inovasi Ramah Lingkungan Journal of Applied Technology
Sofyana Sofyana
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Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Peningkatan Kinerja Membran Polietersulfon (PES) dengan Modifikasi Menggunakan Aditif Hidrofilik Mustabsyirah Mustabsyirah; Ardhila Shinta; Mirna Rahmah Lubis; Sofyana Sofyana; Mukramah Mukramah; Mukhriza Mukhriza; Wahyu Rinaldi; Umi Fathanah
Jurnal Serambi Engineering Vol 7, No 1 (2022): Januari 2022
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v7i1.3828

Abstract

Membrane technology has been the methods in the management of clean water, one of polymer that used as membrane materials is polyethersulfone (PES). However, PES is easy to fouling because it is hydrophobic. Fouling will cause a decrease in membrane performance. In this study, PES membrane was modified using hydrophilic additives, namely an alloy of Mg(OH)2 and chitosan. This research study the effect of additives on the performance and anti-fouling properties of the membrane. The membrane preparation was carried out using polymer blending method. The dope solution was made by mixing 18% PES with additives in the form of an alloy of Mg(OH)2 and chitosan with varying compositions of 1% and 5%, with N-methyl-2-pyrrolidone (NMP) as a solvent, and a mixture of ethanol and water as a non-solvent. The membrane characterization was evaluated by analyzing the functional groups. Membrane performance was carried out by measuring the flux and permeability of pure water, selectivity or rejection, as well as membrane anti-fouling tests. From the results of the study, the largest permeability value in PES/NMP membrane with the addition of 5% additive (membrane N5) was 12.9 L/m2.h.bar, rejection was 33.54% with good anti-fouling properties.
Karakteristik Membran Komposit Polietersulfon, Polivinilpirolidon dan Kitosan Muhammad Fadli; Al Khausar; Sofyana Sofyana; Ummi Fathanah
Jurnal Serambi Engineering Vol 6, No 4 (2021): Oktober 2021
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v6i4.3476

Abstract

Polyethersulfone (PES) is a membrane forming material that has many advantages but is hydrophobic, so it is necessary to add other materials, such as composite PES with Polyvinylpyrrolidone (PVP) and chitosan. The addition of PVP aims to change the nature of the PES membrane to be hydrophilic and the addition of chitosan aims to improve the mechanical properties of the polymer. The purpose of this study was to study the effect of adding PVP and chitosan to the characteristics of PES membranes. The membranes were made using a phase inversion technique by immersion precipitation with a concentration of 20% PES, 1% PVP, and chitosan were varied, namely 0% (M0 membrane), 1.5% (M1), 2% (M2), and 3% (M3). The results of the permeability test showed that the membranes M0, M1, M2, and M3 are classified as nanofiltration membranes with Lp values of 9.1237, 7.618, 6.9651, and 4.4077 L/m2.h.bar. The swelling degree value is 61,512; 103.111; 145,564; and 158.610% and the overall porosity value is 22.892; 32.360; 80.726; and 117.016%. The SEM test showed that the morphology of the membrane changed its structure as the concentration of chitosan increased. The FTIR test on the membrane showed that there were absorption bands, each of which identified its functional group.
Karakteristik Membran Selulosa Triasetat Yang Diprepasi Secara Inversi Fasa Presipitasi Imersi Sofyana Sofyana; Sri Aprilia; Mulkus Assaki
Jurnal Inovasi Ramah Lingkungan Vol 1, No 1 (2020): Jurnal Inovasi Ramah Lingkungan
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.638 KB)

Abstract

Phase inversion is the most versatile technique which to prepare membranes that is microfiltration, ultrafiltration, nanofiltration and reverse osmosis. In the phase inversion technique in immersion precipitation, the membrane structure formed is affected by the type of solvent and the membrane structure will affect the performance. During the process of precipitation homogeneous polymer will form a solid comprising two parts of a non-porous dense layers layer forming a dense layer on the membrane surface and a porous structure forming a support layer at the    bottom in this case an asymmetric structure formed membrane. This research was conducted in 2 stages of activity. First membrane manufacturing process with phase inversion method of cellulose triacetate 18% concentration,dimentyl sulfoxide solvent 82%, 75 oC anneling temperature and 1 minute evaporation time. The changing variables are the operating pressure of 1, 2, 3, 4, 5, 6, 7 bar, the composition of the solvent (dimentyl sulfoxide): solvent (Water) = (0 : 10) is referred to as the M1 membrane and (2 : 8 ) is referred to as the M2 membrane. Membranes that have been made in the characteristics of permeability values and cloud point. The result showed that membrane M1 has permeability value 2,0588 L / m.h.bar, M2 membrane has permeability value 0,9009 L/m2.h.bar. Cloud point point was reached in dope solution with coagulation bath 0: 10 after addition of solvent: non-solvent which is 1,870 gram, while point cloud point at dope solution with 2: 8 coagulation tube was reached in addition of solvent: non-solvent is 6,602 gram.
The Effect of Chitosan Concentration on the Mechanical Strength of Anti- Bacterial Biodegradable Plastic Made from White Sweet Potato Starch (Ipomoea batatas) Lia Mairiza; Sofyana Sofyana; Aula Chairunnisak; Putri Syafrilia; Silvera Isnaini
Journal of Applied Technology Vol 10, No 1 (2023)
Publisher : Journal of Applied Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (251.655 KB)

Abstract

Research on antibacterial biodegradable plastic made from white sweet potato starch (Ipomoea batatas) has been carried out. The purpose of this study was to examine the effect of chitosan concentration on mechanical strength. The independent variables used were the concentration of chitosan, which was 0%; 0.01%; 0.03%; 0.05%; 0.07% (w/v). The mechanism of this research was carried out by dissolving various concentrations of chitosan in glacial acetic acid, with a concentration of 10% (w/v) white sweet potato starch dissolved in distilled water, then adding glycerol as a plasticizer at a gelatinization temperature between 80o-95oC, using a stirring speed of 75 rpm. The research results show that the addition of chitosan can increase the tensile strength value of the film mixed with chitosan and sweet potato starch, where the maximum tensile strength value obtained in this study is found in films with a concentration of 0.07% chitosan worth 0.0645 kgf/cm2 and a maximum value of % elongation of the starch mixture film white sweet potato and chitosan were obtained from films with a chitosan concentration of 0.07%, which is around 5.6%. Meanwhile, the white sweet potato plastic film without chitosan had tensile strength and elongation values of 0.0577 kgf/cm2 and 10.7%, respectively.
Co-Authors Al Khausar Ardhila Shinta Aula Chairunnisak Lia Mairiza Mirna Rahmah Lubis Muhammad Fadli Mukhriza Mukhriza Mukramah Mukramah Mulkus Assaki Mustabsyirah Mustabsyirah Putri Syafrilia Silvera Isnaini Sri Aprilia Umi Fathanah Ummi Fathanah Wahyu Rinaldi