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Khadijah Sayyidatun Nisa
Politeknik STMI Jakarta
Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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The Dynamic Simulation of The Benzene and Toluene Distillation Process Abdussalam Topandi; Khadijah Sayyidatun Nisa; Ibnu Maulana Hidayatulloh
Fluida Vol. 16 No. 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4497

Abstract

Benzene and toluene are products of petroleum catalytic fractionation and dehydrogenation, which are massively used for industrial purposes. The mixture of these two compounds forms an azeotropic condition that requires high energy and expensive investment. The separation process simulation is the appropriate way to address this problem. The technique of separating benzene and its derivatives from toluene is crucial if the product is to be reused for the following process. We propose a simulation of the separation of benzene and toluene using Aspen HYSYS with several assumptions (Peng-Robinson Fluid Package and Transfer Function Block) and operating conditions settings (pressure, flow rate, and vapor fraction). The simulation results were analyzed by comparing treatments without and with dynamic system settings (sudden and gradual changes in operational parameters for 30 minutes). The simulation results revealed that the stepwise dynamic system configuration might increase 10% extra moles of benzene. In addition, dynamic system settings also significantly affect the concentration of the bottom product.
Comparison of Ergonomic Assessment Results in the Automotive Polymer Industry: Cornell Musculoskeletal Discomfort Questionnaire (CMDQ) and Rapid Upper Limb Assessment (RULA) Methods Khadijah Sayyidatun Nisa; Abdussalam Topandi; Isma Wulansari; Fauziah Aulia; Bismo Zulfikar Mustofa
Jurnal Inotera Vol. 9 No. 1 (2024): January-June 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss1.2024.ID309

Abstract

Musculoskeletal disorders (MSDs) encompass injuries to muscles, nerves, joints, and connective tissues, affecting the neck, back, and limbs. The polymer automotive industry, particularly in manufacturing automotive components using plastic injection tools, involves workers with diverse postures. Non-ergonomic postures can lead to muscle tension and health issues, emphasizing the importance of safety and ergonomics. This study employs the Cornell Musculoskeletal Discomfort Questionnaire (CMDQ) and Rapid Upper Limb Assessment (RULA) methods to assess working postures. In the production sector, the average RULA score is 3.8 (31.67%), indicating moderate risk and suggesting further investigation. Conversely, the non-production sector's average RULA score is 3.4 (28.33%), indicating a lower risk but still necessitating changes. CMDQ analysis on 12 respondents reveals posture variation. In the production sector, the average CMDQ score is 2.5 (20.83%), signaling moderate risk and advocating for further investigation. This study lays groundwork for downstream polymer industries to enhance efficiency, quality, and safety.
THE EFFECT OF OIL PALM EMPTY FRUIT BUNCH (OPEFB) FILLER ON THE IMPACT STRENGTH, SURFACE MORPHOLOGY, AND THERMAL PROPERTIES OF HIGH IMPACT POLYSTYRENE (HIPS)/OPEFB COMPOSITES Silvia Silvia; Safira Afrilia; Khadijah Sayyidatun Nisa; Desi Budi Ariani
JURNAL INTEGRASI PROSES Vol 13, No 2 (2024)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jip.v13i2.28392

Abstract

Penelitian ini mengkaji pengaruh filler Tandan Kosong Kelapa Sawit (TKKS) terhadap sifat mekanik dan termal komposit High-Impact Polystyrene (HIPS). Polimer HIPS, yang dikenal karena ketahanan impaknya, dikombinasikan dengan filler TKKS untuk dikaji perubahan yang terjadi terhadap kekuatan impak, suhu transisi kaca (Tg), suhu leleh (Tm), entalpi pelelehan (ΔHm), dan morfologi permukaan. Komposit HIPS/TKKS, dengan variasi persentase TKKS 0%b, 10%b, 15%b, dan 20%b, disiapkan menggunakan Compounder dan Manual Forming Machine. Pengujian kekuatan impak dilakukan dengan metode Charpy unnotched, sementara pengujian morfologi serta sifat termal dilakukan menggunakan Scanning Electron Microscope (SEM) dan Differential Scanning Calorimetry. Hasil pengujian menunjukkan penurunan kekuatan impak seiring dengan meningkatnya kandungan TKKS yang disebabkan oleh lemahnya ikatan antarmuka antara matriks HIPS yang bersifat hidrofobik dan filler TKKS yang bersifat hidrofilik. Analisis termal menunjukkan penurunan Tg, Tm, dan ΔHm yang mengindikasikan perubahan pada kristalinitas dan mobilitas rantai polimer akibat penambahan filler TKKS pada matriks HIPS. Observasi morfologi permukaan menunjukkan adanya pori-pori ukuran besar dan tidak merata, terutama pada pengisian TKKS yang lebih besar, yang berkontribusi pada penurunan performa kuat impak komposit. Penelitian ini memberikan wawasan signifikan mengenai penggunaan TKKS tanpa modifikasi sebagai filler dalam komposit HIPS. Penelitian ini mengungkap tantangan yang timbul akibat sifat hidrofilik filler TKKS dan dampaknya terhadap sifat termal dan mekanik komposit HIPS/TKKS. Temuan ini menekankan pentingnya peningkatan kompatibilitas antarmuka untuk mendukung pengembangan material komposit HIPS/TKKS yang berkelanjutan dan ekonomis.
Properties of Recycled Polyethylene Terephthalate (rPET)/Stearic Acid/Green Mussel Shell (GMS) Composite Desi Budi Ariani; Khadijah Sayyidatun Nisa; Fitria Ika Aryanti; Ghina Sabrina Hanifati
Jurnal Rekayasa Kimia & Lingkungan Vol 20, No 1 (2025): Jurnal Rekayasa Kimia & Lingkungan (June, 2025)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v20i1.45134

Abstract

The increasing accumulation of plastic waste, particularly polyethylene terephthalate (PET), presents significant environmental challenges. This study explores the incorporation of green mussel shell (GMS) as a bio-filler in recycled polyethylene terephthalate (rPET) composites to promote sustainability and circular economy practices. rPET/SA/GMS composites were fabricated using injection molding, with GMS compositions of 0%, 5%, 10%, and 15% and a fixed 1% stearic acid (SA) content as a coupling agent. The effects of GMS on thermal, mechanical, rheological, and morphology properties were analyzed using differential scanning calorimetry (DSC), universal testing machine (UTM), melt flow index (MFI) testing, and scanning electron microscopy (SEM). The results indicate that 10% GMS exhibited the highest melting temperature (249.5C) due to enhanced interfacial interactions, despite a decrease in crystallinity. However, tensile strength decreased significantly at 5% GMS (8.52 MPa) due to weak interfacial bonding, whereas 10% GMS (12.91 MPa) showed slight improvement due to better SA-assisted dispersion. Rheological analysis revealed the highest melt flow rate (162.87 g/10 min) at 5% GMS, but higher GMS concentrations reduced flowability due to increased CaCO content and filler agglomeration. Morphological analysis confirmed that GMS addition increased surface roughness, induced void formation, and disrupted stress transfer, weakening composite integrity. These findings highlight the potential of GMS as a functional bio-filler in rPET composites, emphasizing the need for optimized filler concentration and interfacial modifications to develop sustainable high-performance materials.
Co-Authors Abdussalam Topandi Bismo Zulfikar Mustofa Desi Budi Ariani Fauziah Aulia Fitria Ika Aryanti Ghina Sabrina Hanifati Ibnu Maulana Hidayatulloh Isma Wulansari Safira Afrilia Silvia Silvia