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All Journal Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Jurnal Ilmiah Mahasiswa Teknik Kebumian Jurnal Sains dan Teknologi Reaksi ASEAN Journal of Chemical Engineering Journal Of Human And Education (JAHE) Makara Journal of Science Aceh International Journal of Science and Technology PESARE: Science and Engineering Service Journal Serambi Engineering JURNAL REKAYASA KIMIA & LINGKUNGAN Jurnal Mitra Pengabdian Farmasi
Pocut Nurul Alam
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Public Health Social Sciences Other

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Fourrier Transform Infrared and Gel Permeation Chromatography Evaluation to Prepared Polyurethane Paint from Polyol Palm Oil Based Teuku Rihayat; . Suryani; Pocut Nurul Alam
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 2 (2012): Engineering
Publisher : Syiah Kuala University

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Abstract

New emulsion type paint was prepared by utilizing polyol for the production of polyurethane by reaction with an isocyanate was obtained by the synthesis of palm oil-based oleic acid with glycerol. Dodecylbenzene sulfonic acid (DBSA) was used as catalyst and emulsifier. The various methods for preparing Polyurethane /clay Nano composites, but in this research the author choice by a pre-polymer method and were evaluated by Fourier Transform Infrared (FTIR) spectra to determine micro-domain structures of segmented PU. The molecular weight (MW) of polyol was obtained by using gel permeation chromatography (GPC) and the result was about 950. The micro domain structures of the segmented PU were analysed by FTIR by following the work of Seymour et al. to estimate the degree of phase separation in segmented PU. The formation of hydrogen bonding by –C=O group can be determined by examining the peak position at 1709 cm-1 for hydrogen bonded –C=O and at 1731 cm-1 for free –C=O. The molecular weight (MW) of PU based on palm oil was about 3.266. The performance characteristics of materials indicate to be comparable with the corresponding industrial standard
Adsorption of Pb (II) Heavy Metals from Wastewater Using Modified Rice Husk as Adsorbent Farid Mulana; Abrar Muslim; Pocut Nurul Alam; . Mariana
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering
Publisher : Syiah Kuala University

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Abstract

Pb (II) heavy metal from wastewater as by-product of industrial activity often causes problem to environment. In order to minimize the amount of Pb (II), wastewater was treated in various ways, including adsorption process using adsorbent. Rice husks that containing lignin, cellulose, and hemicellulose are one of potential candidates to be utilized as adsorbent. The purpose of this research is to modify rice husk by using sodium hydroxide and citric acid and to know adsorption capacity and adsorption efficiency of modified rice husk adsorbent on Pb (II) metal uptake from wastewater. To identify substituted groups, analysis samples by using Fourier Transform Infrared was performed and to determine adsorbed amount of Pb (II) into adsorbent an Atomic Adsorption Spectroscopy Method was conducted. The result showed that optimum adsorption capacity and adsorption efficiency was 5.08 mg/g and 84.52%, respectively. These results were obtained on 60 ppm of Pb (II) adsorbate concentration and 0.8 M citric acid concentration for 150 minutes of contact time
Evaluasi Teknis Sistem Penyaliran Tambang, Studi Kasus: PT. Bara Energi Lestari Kabupaten Nagan Raya, Aceh Rahmadi Siahaan; Pocut Nurul Alam; Febi Mutia
Journal of Geoscience, Mining Engineering, and Technology Vol 1, No 1 (2017): Jurnal Ilmiah Mahasiswa Teknik Kebumian
Publisher : Journal of Geoscience, Mining Engineering, and Technology

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Tambang Pit IV PT. Bara Energi Lestari berada di Nagan Raya, Provinsi Aceh. Sistem penambangan terbuka dengan menggunakan metode strip mine diterapkan pada Pit IV PT. Bara Energi Lestari. Kegiatan penambangan bergantung terhadap keadaan cuaca pada lokasi tambang, antara lain hujan. Keberadaan air hujan  akan mengganggu kegiatan penambangan sehingga air yang berada di sump harus dikeluarkan. Evaluasi pada Pit IV curah hujan yang direncanakan 113,38 mm/hari dan intensitas hujan selama 4 jam sebesar 15,60 mm/jam menghasilkan debit limpasan 16.040 m3/jam. Volume air yang akan masuk ke Pit IV sebesar 17.613 m3. Untuk mengatasi air yang akan masuk ke Pit IV adalah dengan mengalirkan air melalui saluran terbuka dan ditampung pada sump. Sistem pemompaan ini menggunakan 1 unit pompa Sykess 150 HH yang diletakkan di sump Pit IV. Pompa memiliki nilai julang total sebesar 25,04 m, debit aktual pompa 3.123 m3/hari, nilai efisiensi pompa 95% dengan jam operasi pompa 22 jam. Untuk mengatasi volume total air 17.556,5 m3/hari yang masuk ke sump, direkomendasi dimensi sump dengan ukuran baru 85 m x 70 m x 3 m.
Photocatalytic Hydrogen Production over Ni/La-NaTaO3 Nanoparticles from NaCl-water Solution in the Presence of Glucose as Electron Donor Husni Husin; Komala Pontas; Yunardi Yunardi; Adi Salamun; Pocut Nurul Alam; Fikri Hasfita
ASEAN Journal of Chemical Engineering Vol 17, No 2 (2017)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (727.757 KB) | DOI: 10.22146/ajche.49553

Abstract

Nanoparticles La-NaTaO3 photocatalyst has been synthesized via a sol-gel route. A Ninanoparticle (NPs) as a cocatalyst is loaded on La-NaTaO3 by a simple impregnation method.The products are characterized by X-ray diffraction (XRD), scanning electron microscope(SEM), a high-resolution transmission electron microscope (HRTEM) and X-ray photoelectronspectroscopy (XPS). X-ray diffraction of the La-NaTaO3 samples shows perovskite-typecrystalline orthorhombic structure. Small particulate solids of La-NaTaO3 (30-250 nm) areobserved by SEM measurement. The nickel particles are detected from HRTEM images isaround 4-8 nm. The hydrogen evolution over La-NaTaO3 with NaCl is much higher than thatwithout NaCl. The photoactivity of La-NaTaO3 is enhanced when Ni is loaded on the surfaceof La-NaTaO3. The optimum loading amount of nickel is found to be 0.3 wt.% for La-NaTaO3,and it is more effective for H2 production from NaCl-water solution in the presence glucose.It is revealed that the loaded Ni can interact with each other and cooperate on improving thephotocatalytic activity. In the case of glucose as an electron donor, the activity ofphotocatalytic hydrogen generation over Ni/La-NaTaO3 increases dramatically. NaCl andglucose can promote markedly the photocatalytic hydrogen evolution. The Ni/La-NaTaO3nanoparticles system appears to be a promising candidate, which is very important to practicalapplications, including the production of H2 from NaCl-water solution in the presence ofglucose.
REFINERY OF CITRONELLA OIL USING VACUUM HYDRODISTILATION METHOD IN ACEH UTARA DISTRICT S Syafruddin; Reza Fauzan; Zulfan Khairil Simbolon; Rizal Syahyadi; Atiqah Aida; Rima Dhinta Dewi Astuti; Isra Adelya Izzati; Pocut Nurul Alam
Jurnal Sains dan Teknologi Reaksi Vol 21, No 01 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i01.4146

Abstract

Citronella oil is a non-timber forest product (NTFP) and is commercially obtained from the distillation of citronella leaves (Cymbopogon nardus L). Fragrant citronella leaves are one of the raw materials for obtaining vegetable oils in the form of essential oils. Essential oil is the main component consisting of composition in the form of geraniol and citronellal. The process of extracting essential oils can be done using various methods, one of which is the Vacuum Hydrodistillation method. The Vacuum Hydrodistillation method is carried out using a vacuum pump as a pressure guard and the boiling point of the distillation process does not exceed the boiling point temperature of water, which is 1000 C, so that the oil produced is maintained its purity. The vacuum hydrodistillation process of citronella was carried out for 3, 5, and 7 hours with each treatment using random and whole pieces of raw material. The resulting essential oil products were analyzed in the form of yield, density, refractive index and oil composition analysis using GC-MS. The best essential oil yields from citronella were obtained under operating conditions with random samples and distillation time of 5 hours. Where the yield produced is 0.17% with a refractive index of 1.41570 and a density of 0.92735 gr/ml. Keywords: Essential Oil, Vacuum Hydrodistillation, Fragrant Lemongrass, Geraniol
INFLUENCE OF THE ADDITION OF PARAFFIN AND GRAPHITE ON ETHYLENE PROPHYLENE DIENE MONOMER (EPDM) FOR THERMAL ENERGY STORAGE Pocut Nurul Alam; Isra Adelya Izzati; Rima Dhinta Dewi Astuti; Umi Qhanita Putri Swya; Teuku Muhammad Daffa Rihayat
Jurnal Sains dan Teknologi Reaksi Vol 21, No 01 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i01.4169

Abstract

This study aims to determine the effect of the paraffin: graphite ratio on the thermal resistance of the Phase Change Material (PCM). PCM mixed with Ethylene Propylene Diene Monomer (EPDM) which has good compatibility with paraffins as a base polymer for preparing paraffin graphite composites. The samples was prepared by using heating method at 180oC for 20 minutes with a variation of the ratio 9:1 and 8:2 with mass ratios PCM70 : EPDM30, PCM80 : EPDM20, and PCM90 : EPDM10. Based on the results of tensile strength testing, thermal stability analysis and SEM. the maximum tensile strength is obtained at a mass ratio of 80% : 20% with a ratio of 9:1 which is 9.34 Mpa, has a thermal stability of 307.04oC at onset and Endset at a temperature of 399.50oC, However, there is an aggregate form that is agglomerate and has large pores, as well as a rough surface on the sample. While the results of the Morphology test using SEM, the best interaction between polymers with a mass ratio of 70%:30% at a ratio of 9:1, with a very well mixed surface, smooth, no lumps formed. Keywords: EPDM; Graphite;Paraffin;PCM;Polymers 
SOLVENT EXTRACTION OF GINGER OLEORESIN USING ULTRASOUND Supardan, Muhammad Dani; Fuadi, Anwar; Alam, Pocut Nurul; Arpi, Normalina
Makara Journal of Science Vol. 15, No. 2
Publisher : UI Scholars Hub

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Abstract

The use of ultrasound in extraction process creates novel and interesting methodologies, which are often complementary to conventional extraction methods. In the present study, the use of ultrasound to extract oleoresin from ginger (Zingiber officinale R.) was investigated. The extraction was performed by using ethanol as solvent in the presence of ultrasonic irradiations operating at frequency of 42 kHz at extraction temperature of 60 o C. The oleoresin extracted was in the form of dark thick liquid with specific ginger flavor. Based on GC-MS analysis, the use of ultrasound was not give an effect on alteration of main component in ginger oleoresin. The main component in extracted ginger oleoresin was zingerone. Gingerol as one of the pungent principle of the ginger oleoresin was not detected due to decomposition of gingerol at a temperature above 45 o C. Extraction rate of ultrasound-assisted extraction was about 1.75 times more rapid than a conventional system based on soxhlet. The scanning electron microscopy images provided more evidence for the mechanical effects of ultrasound, mainly appearing on cells’ walls and shown by the destruction of cells, facilitating the release of their contents.
Utilization of Coal-Mining Mud as a Safe and Environmentally Friendly Building Material Alam, Pocut Nurul; Yulianis, Yulianis; Hadif, Fauzil; Kurniawan, Reinaldy; Aslam, Izzan Nur
Aceh International Journal of Science and Technology Vol 13, No 1 (2024): April 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.1.37303

Abstract

Coal-mining mud is one of the wastes that must be treated before being discharged into the environment. The mud contains a lot of heavy metals which have the potential to pollute the environment and endanger human health. On the other hand, the metal contents in the mud can be used as components to strengthen building materials such as brick. In this study, an investigation was carried out to check whether the risk of heavy metal contamination in the coal-mining mud can be minimized when the brick is produced. In addition, this study also tested whether the bricks produced from the utilization of the mud were strong enough to be used as construction materials. The results obtained indicate that metal contamination can be significantly minimized through the solidification process of brick products and is following the Indonesian national quality standards. This study also shows that even though the bricks meet the strength standard for the certain purpose applied in Indonesia, the utilization of coal-mining mud mixed with cement and sand was not sufficient to produce strong bricks even though the weight obtained was quite light.
Performance Analysis of Coconut Fiber Trickle Bed Filter for Municipal Wastewater Treatment Teuku Maimun; Mirna Rahmah Lubis; Pocut Nurul Alam; Syaubari
Jurnal Serambi Engineering Vol. 9 No. 2 (2024): April 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The large amount of liquid waste generated from urban activities can provide negative impacts, such as disease spread, environmental damage, and others. Therefore, treatment efforts before disposal into the environmental are crucial. One method of treating liquid waste that can be used is the trickling filter. The trickling filter method used in this research utilizes natural fibers, namely coconut fiber, as the packing media, replacing sand or plastic as the packing media in conventional trickling filters. Treatment of municipal liquid waste (domestic waste) using coconut fiber trickling filters is one application of biofilm technology in wastewater treatment, where a biological layer (biofilm) like mucus will grow on the surface of the media. This biological layer will meet the wastewater and degrade the pollutant compounds presentin the wastewater, resulting in water with lower biological oxygen demand (BOD) values than before. Theresult if water that is safe for disposal into the environment. This trickling filter reactor can degrade pollutants with degradation efficiency of BOD 91.3%, nitrate 50.25%, and ammonia 37.5% at the optimal flow rate of this study (0.256 L/min).
SLOPE STABILITY ANALYSIS OF DISPOSAL AREA WITH GROUNDWATER TABLE AND MATERIAL DENSITY VARIATIONS USING THE BISHOP METHOD Oziana, Deea Rizki; Ramadhandi, Farhan; Hulwani, Zati; Harisman, Hendra; Alam, Pocut Nurul
Jurnal Sains dan Teknologi Reaksi Vol 23, No 01 (2025): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v23i01.7365

Abstract

Slope stability is crucial in mining activities, particularly in disposal areas composed of loose materials with varying geotechnical conditions. Groundwater level and material density are significant factors that influence slope stability. This study aims to analyze the effects of groundwater level variations and material density on the safety factor of disposal slopes using the Bishop method within the GeoStudio SLOPE/W software framework. The research was conducted in a coal mine disposal area, divided into three cross-sections: A–A’, B–B’, and C–C’. Simulations were performed under three conditions: unsaturated (normal), saturated (due to intense rainfall), and threshold (the maximum critical condition still considered stable). The results show that rising groundwater levels significantly reduce the slope’s safety factor (SF). Under saturated conditions, the SF for all three cross-sections dropped below 1.0, indicating unstable slopes. Specifically, the SF declined from 1.15 to 0.72 for section A–A’, from 1.16 to 0.55 for B–B’, and from 1.18 to 0.81 for C–C’. In contrast, an increase in wet material density led to only moderate reductions in SF, with values remaining above 1.0. The combination of high groundwater levels and increased material density poses a critical risk factor for potential slope failure. Continuous hydrogeological monitoring is therefore essential to ensure the long-term stability of mine disposal areas. Keywords: slope stability, groundwater table, material density
Co-Authors . Mariana . Suryani Abrar Muslim Adi Salamun Akhar Ilhamdi Al-Huda, Nafisah Anwar Fuadi Anwar Fuadi, Anwar Atiqah Aida Bern Klein Cut Meurah Rosnelly Darmadi Darmadi Darmadi Darmadi Edi Munawar Ernawati Ernawati FARID MULANA Febi Mutia Fikri Hasfita Hadif, Fauzil Harisman, Hendra Hendra Hasrisman Hulwani, Zati Husni Husin Husni Husin Husni Husin Husni Husin, M.T. Ibnu Rusydy Ilhamdi, Akhar Isra Adelya Izzati Izzan Nur Aslam Justaman Arifin Karo karo Kana, Muhammad Rizki Karo karo, Justaman Arifin Klein, Bern Komala Pontas Kurniawan, Reinaldy Mirna Rahmah Lubis MUCHLIS Muhammad Dani Supardan Muhammad Zaki Muhammad Zaki Nestor Orcon Normalina Arpi Nurhazanah Nurhazanah Nurhazanah, Nurhazanah Nurul Aflah Orcon, Nestor Oziana, Deea Rizki Pramana, Agus Hari Rahmadi Siahaan Raiyan Soekarno Ramadhandi, Farhan Reza Fauzan Rima Dhinta Dewi Astuti Rizal Syahyadi S Syafruddin Sedik, Samuel Paulus Simbolon, Zulfan Khairil Soekarno, Raiyan Syaubari Teuku Maimun Teuku Muhammad Daffa Rihayat Teuku Rihayat Teuku Rihayat Teuku Rihayat Teuku Rihayat Umi Fathanah Umi Qhanita Putri Swya Wahyu Rinaldi Yulianis Yulianis Yunardi Yunardi yunardi, yunardi