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THE EFFECT OF MAGNETITE (Fe3O4)CATALYST FROM IRON SANDS ON DESORPTION TEMPERATURE OF MgH2 HYDROGEN STORAGE MATERIAL Maulinda Maulinda; zulkarnain Jalil; Adi Rahwanto
Jurnal Natural Volume 16, Number 1, March 2016
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v16i1.4362

Abstract

One of the future technologies for a safe hydrogen storage media is  metal hydrides. Currently, Mg-based metal hydride has a safety factor and efficient for vehicle applications. However, the thermodynamic properties of magnesium hydride (MgH2) found a relatively high temperature. High desorption temperatures caused MgH2 high thermodynamic stability resulting desorption enthalpy is also high. In this study, natural mineral (iron ore) has been extracted from iron sand into powder of magnetite (Fe3O4) and used as a catalyst in an effort to improve the desorption properties of MgH2. Magnetie has been successfully extracted from iron sand using precipitation method with a purity of 85 % , where the purity of the iron sand before extracted was 81%. Then, MgH2-Fe3O4 was milling using mechanical alloying method with a variety of catalysts and milling time. The observation by XRD showed the material was reduced to nanocrystalline scale. MgH2 phase appears as the main phase. DSC test results showed with the addition of Fe3O4, the desorption temperature can be reduced up to 366oC, compared to pure pure MgH2 reached by 409o C. Furthermore, based on gravimetric test, the hydrogen release occurs at a temperature of 388o C, weight loss  of 0.66 mg during 16 minutes.
EMPOWERING COASTAL COMMUNITIES OF ACEH Besar THROUGH DIVERSIFICATION OF FISH JERK PRODUCTS AS ADDED VALUE TO THE USEFULNESS OF TRASH FISH Muhammad; Ichsan Rusydi; Syamsul Rizal; Thaib Rizwan; Zulkarnain Jalil; Zulfan; Imelda Agustina
Jurnal Pengabdian Bangsa Vol 2 No 1 (2023): SEPTEMBER 2022- FEBRUARY 2023
Publisher : CV. Naskah Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61992/jpb.v2i1.62

Abstract

This service activity is planned to be carried out in Aceh Regency with the objectives: (1) To determine the increase in the economic value of trash fish from the cracker diversification process; (2) Knowing the increase in nutritional value of crackers with the addition of trash fish ingredients; (3) Knowing that there is a reduction in fish waste in the Lhok Sedu Leupung area of ​​Aceh Besar from the process of diversifying trash fish products (4) Can utilize technology transfer for the community to optimize existing marine potential. In this way, job opportunities are created for the local community so that prosperity and prosperity can be realized. Several factors that support the sustainable use of water resources for processing businesses include processing production technology, social and cultural conditions of the community, availability of infrastructure and capital. Strengthening food security is something that must be done to face the free market.
PROCESSING AND UTILIZATION OF PUMICE AS AN ALTERNATIVE MIXTURE IN MAKING CONCRETE BRICKS (PAVING BLOCKS) TO INCREASE COMMUNITY INCOME Muhammad; Ichsan Rusydi; Syamsul Rizal; Zulfan; Muhammad Syukri; Thaib Rizwan; Zulkarnain Jalil; Razali Thaib
Jurnal Pengabdian Bangsa Vol 2 No 2 (2023): MARCH 2023 - AUGUST 2023
Publisher : CV. Naskah Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61992/jpb.v2i2.94

Abstract

Aceh Besar Regency, in this case Mesjid Raya District, is an area that has quite promising geological conditions, both in terms of the type and distribution of rocks. This makes it possible for many mining excavations that have high economic value to be found in this area. However, the utilization of these mining materials has not been optimized until now. One type of mining material in question is pumice. This pumice is found in large quantities in Paya Kameng village. However, so far the people in this village have only used it as additional building materials without any effort to increase its benefits. Therefore, it was tried to use it for raw materials in the industrial and construction sectors such as in the manufacture of concrete bricks. Concrete bricks (paving blocks) are a type of non-structural concrete that can be used for roads, parking lots, sidewalks, parks and other needs. Concrete bricks are made from a mixture of type I portland cement and water and aggregates as fillers. Aggregates or fillers occupy 75% of the total volume of concrete, so that the properties of the aggregates have a major influence on the behavior of hardened concrete. The aggregate that is often used is sand.
Karakteristik Sedimen dan Kandungan Mineral Pasir Besi di Labuhan Haji Timur, Kabupaten Aceh Selatan Syahrul Purnawan; Azizah Azizah; Zulkarnain Jalil; Muhammad Zaki
Jurnal Rekayasa Kimia & Lingkungan Vol 13, No 2 (2018): Jurnal Rekayasa Kimia & Lingkungan (December, 2018)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v13i2.10532

Abstract

Kandungan mineral besi pada alam menjadi topik yang menarik untuk dikaji terkait peran pentingnya secara ekonomi. Keberadaan magnetite pada sedimen di suatu wilayah perairan dapat juga digunakan sebagai fingerprint dari proses transport sedimen. Penelitian ini ditujukan untuk mengamati sejumlah parameter butiran sedimen untuk mendapatkan gambaran pola distribusi sedimen yang terjadi pada daerah Labuhan Haji Timur, Aceh Selatan. Pengambilan sampel sedimen dilangsungkan pada November 2015 menggunakan metode coring. Sebanyak empat stasiun dipilih untuk mewakili kawasan perairan Labuhan Haji timur, yang terdiri dari daerah aliran sungai, muara, dan pantai. Sejumlah analisis yang dilakukan adalah ukuran butiran rata-rata, bentuk partikel, dan kandungan kimia penyusun sedimen. Analisis kandungan kimia dari sampel sedimen dilakukan pada Laboratorium Sentral Mineral dan Material Maju, FMIPA Universitas Malang menggunakan X-Ray Fluorescence (XRF), dimana sebelumnya sampel dari setiap stasiun dipilah berdasarkan ukuran halus (lebih kecil dari 0,5 mm) dan kasar (lebih besar dari 0,5 mm). sampel sedimen yang berasal dari pantai dan muara memiliki modus distribusi ukuran sedimen pada fraksi pasir sangat halus, sedangkan modus pada daerah aliran sungai berada pada fraksi pasir sangat kasar. Magnetite ditemukan pada setiap lokasi sampling, persentase tertinggi berada pada kawasan muara. Analisis bentuk butiran magnetite menunjukkan bentuk yang lebih angular pada daeah aliran sungai dan menjadi lebih rounded pada kawasan pantai. Disimpulkan bahwa kandungan magnetite yang terdapat pada kawasan pantai di Labuhan haji Timur ditransportasikan melalui aliran Sungai Peulumat.
Utilization of oyster shell waste (crassostrea gigas) as a source of calcium in hydroxyapatite synthesis Irhamni Irhamni; Eka Juliana; Zulfalina Zulfalina; Fauzi Fauzi; Zulkarnain Jalil
Jurnal Geuthèë: Penelitian Multidisiplin Vol 7, No 2 (2024): Jurnal Geuthèë: Penelitian Multidisiplin
Publisher : Geuthèë Institute, Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52626/jg.v7i2.357

Abstract

Biomaterials are materials that interact with living tissues for the purpose of treating and replacing tissues either temporarily or permanently. Biomaterials can be developed from hydroxyapatite-based materials. The source of calcium for the manufacture of hydroxyapatite is obtained from oyster shell waste (Crassostrea gigas) from the waters of Alue Naga Banda Aceh. The purpose of this study was to examine the opportunity to utilize oyster shell waste as a source of calcium for hydroxyapatite synthesis. The hydroxyapatite synthesis process was carried out by calcining oyster shells at a temperature of 10000C for 5 hours to obtain calcium oxide (CaO) content. Then, the CaO powder was reacted with phosphoric acid (H3PO4) to obtain hydroxyapatite compound (Ca10(PO4)6(OH)2) and then sintered at 900C for 2 hours. Analysis of CaO and hydroxyapatite phases was carried out through XRD (X-Ray Diffraction) characterization results. Surface morphology and element content were obtained from SEM-EDS characterization. Based on the analysis, CaO and hydroxyapatite phases have been successfully formed and the surface morphology of hydroxyapatite crystal structure is not clearly visible because of the formation of agglomeration. Based on the elemental content test, the ideal Ca/P ratio has not been obtained. Based on the results of the research, oyster shell waste (Crassostrea gigas) from the waters of Alue Naga, in Syiah Kuala District, Banda Aceh City has the opportunity to be utilized as a source of calcium in hydroxyapatite synthesis and can be developed as a biomaterial.
Study of hydroxyapatite based on Aceh's bovine bone coating on 314L stainless steel as a candidate for coating dental implant materials Irhamni IRHAMNI; Ireka SALSABILA; Fauzi FAUZI; Zulfalina ZULFALINA; Zulkarnain JALIL
Journal of Syiah Kuala Dentistry Society Vol 6, No 1 (2021): June 2021
Publisher : Dentistry Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jds.v6i1.21887

Abstract

ABSTRACT The use of hydroxyapatite (HAp) based on Aceh's bovine bone has been studied as a candidate for thecoating dental implant materials. In this study, the effect of sintering temperature and viscosity on the thickness ofthe hydroxyapatite layer on the 316L stainless steel plaque was observed. The hydroxyapatite was synthesized frombovine bone and then coated on the plate using the dip-coating method. Then, the plate surface was dried at 110 Cfor 30 minutes and sintered with various temperatures of 500, 600, 700, and 800 C for 1 hour. The plate that hasbeen coated with hydroxyapatite was characterized using a thickness meter to measure the thicknesses of the layer.The water composition of 10 grams/L had a better effect on the thickness of the implant material coated with HApbeef bone compared to the water composition of 4, 6, and 8 (gram/L) (p0.05). On the other hand, the temperaturefactor did not affect changes in the thickness of the implant material (p0.05). The higher water composition (10grams/L) resulted in a decrease in the thickness of the implant material coated with beef bone HAp. KEYWORDS: Hydroxyapatite, sintering temperature, viscosity, dip-coating, thickness, coating dental implant