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Elkawnie
Published by Universitas Islam Negeri Ar-Raniry Banda Aceh
ISSN : 24608912     EISSN : 24608920     DOI : -
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Engineering
Elkawnie is a journal of Integration Science and Technology with Islam. It's covering research and technology in the field of study of Architecture, Biology, Chemistry, Environmental Engineering, ICT, Physical Engineering and other science and technology field. In particular, Elkawnie's journal discusses the development of research and technology in contributing to development as part of Muslim scientists in the academic sphere.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 14 Documents
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Search results for , issue "Vol 10, No 1 (2024)" : 14 Documents clear
Revolutionizing Asphalt Engineering: Unveiling The Influence of Oil Palm Fiber Reinforcement on The Mechanical Attributes of Asphalt Mixtures Tamalkhani Syammaun; Hafnidar A Rani; Suhana Koting
Elkawnie: Journal of Islamic Science and Technology Vol 10, No 1 (2024)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v10i1.21669

Abstract

Abstract: The increasing demand for environmentally and economically sustainable technologies necessitates innovative approaches in material engineering. This study investigates the repurposing of waste materials by integrating oil palm fiber (OPFib) as reinforcement in porous asphalt mixtures. The primary objective is to examine the effects of adding varying amounts of OPFib (1%, 2%, 3%, 4%, and 5%) on the mechanical properties of asphalt, specifically aiming to improve the asphalt's softening point, viscosity, binder drain-down, and air void characteristics. The methodology involves a series of controlled laboratory tests under diverse conditions to measure these properties. The results indicate that adding OPFib enhances the performance of asphalt by raising the softening point and viscosity, decreasing binder drain-down, and achieving optimal air void levels at certain OPFib concentrations. However, higher OPFib content leads to diminished overall performance. These findings provide insights into the use of OPFib in asphalt mixtures, offering a sustainable solution that enhances road durability and performance, while effectively utilizing waste materials.Abstrak: Meningkatnya permintaan akan teknologi yang ramah lingkungan dan berkelanjutan secara ekonomi membutuhkan pendekatan inovatif dalam rekayasa material. Penelitian ini menyelidiki pemanfaatan kembali bahan limbah dengan mengintegrasikan serat kelapa sawit (OPFib) sebagai penguat pada campuran aspal porus. Tujuan utamanya adalah untuk menguji pengaruh penambahan OPFib dalam jumlah yang bervariasi (1%, 2%, 3%, 4%, dan 5%) terhadap sifat mekanik aspal, khususnya untuk meningkatkan titik lembek aspal, viskositas, aliran aspal dan karakteristik rongga udara. Metodologi yang digunakan adalah serangkaian pengujian laboratorium sebagai kontrol dalam berbagai kondisi untuk mengukur sifat-sifat tersebut. Hasilnya menunjukkan bahwa penambahan OPFib meningkatkan kinerja aspal dengan meningkatkan nilai titik lembek dan viskositas, mengurangi binder drain-down, dan mencapai tingkat rongga udara yang optimal pada konsentrasi OPFib tertentu. Namun, kandungan OPFib yang lebih tinggi menyebabkan penurunan kinerja secara keseluruhan. Temuan ini memberikan pemahaman tentang penggunaan OPFib dalam campuran aspal, menawarkan solusi berkelanjutan yang meningkatkan daya tahan dan kinerja jalan, sekaligus secara efektif memanfaatkan bahan limbah.
Oil Recovery From Spent Bleaching Earth With Reflux Extraction Method Using Acetonitrile and n-Hexane Solvent Maryudi Maryudi; Aster Rahayu; Totok Eka Suharto; Dhias Cahya Hakika; Ahmad Fatwa Zufar
Elkawnie: Journal of Islamic Science and Technology Vol 10, No 1 (2024)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v10i1.16791

Abstract

Abstract: The growth of the oleochemical industry generated a large amount of spent bleaching earth (SBE) solid waste that causes environmental problems. The SBE solid waste produced is reported at about 600,000 metric tons per year. Recovery of the oil from SBE can be an alternative solution to reduce the negative impact of SBE solid waste. In this study, the recovery of oil from SBE was carried out by the reflux extraction method followed by a study on its properties. The oil recovery process was conducted by using two different solvents (acetonitrile and n-hexane) at different particle sizes (40, 60, 100 mesh) of SBE, solvent-SBE ratios (2:1, 3:1, 4:1), and extraction time (1, 2, 3 hours). Experimental results showed that n-hexane extracted oil with yield ranged from 5 to 14.8%, while acetonitrile extracted oil with yield ranged from 0.68 to 8.4%. Product analysis shows that the oil extracted has a water content of 1.56% and 2.53% for acetonitrile and n-hexane, respectively. The viscosity analysis results show that the oil viscosities were 5.83 cSt (acetonitrile) and 5.09 cSt (n-hexane) which is in reasonable agreement with the Indonesian National Standard for vegetable oil (SNI 7709:2019). The result suggested that n-hexane provided better product yield than acetonitrile as a solvent for oil recovery from SBE. This study provides an alternative method and solution for the oleochemical industry in managing SBE waste.Abstrak : Pertumbuhan industri oleokimia menghasilkan limbah padat berupa tanah pemucat (spent bleaching earth/ SBE) yang  mengakibatkan permasalahan lingkungan. Limbah padat SBE yang dihasilakn dilaporkan sekitar 600.000 ton per tahun. Pemisahan minyak dari SBE dapat menjadi alternatif penyelesaian masalah untuk menurunkan dampak negatif dari limbah SBE. Dalam penelitian ini, recovery minyak dari SBE dilakukan dengan metode ekstraksi reflux dan dilanjutkan karakterisasi hasil minyak. Recovery minyak dilakukan dengan dua jenis pelarut (asetonitril and n-heksana) dengan ukuran partikel SBE bervariasi (40, 60, 100 mesh), perbandingan pelarut-SBE (2:1, 3:1, 4:1), dan waktu ekstraksi (1, 2, 3 jam). Hasil penelitian menunjukkan bahwa asetonitril mengekstrak minyak dengan yield 1,56-2,53%, sementara n-heksana berkisar 5-14,8%. Minyak hasil ekstraksi menunjukkan kadar air 1.56% (asetonitril) and 2.53% (n-heksana), serta nilai viskositas sebesar 5.83 cSt (asetonitril) and 5.09 cSt (n-heksana). Minyak hasil memenuhi SNI Minyak goreng sawit (SNI 7709:2019). Hasil menunjukkan n-heksana memiliki kemampuan lebih baik dibanding asetonitril dalam mengekstrak minyak dari SBE. Hasil penelitian memberikan penyelesaian alternatif dalam menagngani limbah SBE dari industri oleokimia.
The Influence of Tilt Angle of 120 WP Solar Panels on Light Intensity and Generated Electrical Power Masthura Masthura; Abdul Halim Daulay
Elkawnie: Journal of Islamic Science and Technology Vol 10, No 1 (2024)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v10i1.20407

Abstract

Abstract: In designing solar panel devices, generally the tilt angle of the panel surface is designed with a static design and this greatly influences the results of the electricity source generated. The design of the tool is intended to be in coordinates that are perpendicular to the direction of the sunlight rays so that it receives maximum solar radiation. This research aims to determine the relationship between the tilt angle of the solar panels and the light intensity and electrical power generated and to determine the optimal tilt angle of the solar panels based on the values of light intensity and electrical power. The indicators measured consist of light intensity, voltage, current and electrical power by varying the tilt angle of the solar panel. The results of this research show that the tilt angle of the solar panel greatly influences the measured light intensity value so that the greater the light intensity obtained, the higher the output voltage of the solar panel. The most optimal tilt angle is at an angle of 105o and 120o with the greatest light intensity so that the resulting output power is correspondingly greater.Abstrak: Dalam merancang alat panel surya, pada umumnya posisi kemiringan dari permukaan panel dirancang dengan desain statis sangat mempengaruhi hasil dari sumber listrik yang dihasilkan. Rancangan alat  diupayakan  berada di koordinat yang  tegak lurus dengan arah pancaran cahaya matahari agar menerima radiasi matahari yang maksimal. Penelitian ini bertujuan untuk mengetahui hubungan posisi kemiringan panel surya terhadap intensitas cahaya dan daya listrik yang dihasilkan serta mengetahui posisi kemiringan panel surya yang optimal berdasarkan nilai intensitas cahaya dan daya listriknya. Indikator yang diukur terdiri dari intensitas cahaya, tegangan, arus, dan daya listrik  dengan memvariasikan posisi kemiringan dari panel surya. Hasil penelitian ini menunjukkan posisi kemiringan sebuah panel surya sangat mempengaruhi  nilai intensitas cahaya yang diukur sehingga semakin besar intensitas cahaya yang didapat maka tegangan keluaran panel surya mengalami kenaikan. Posisi kemiringan yang paling optimal pada sudut 105o dan 120o dengan intensitas cahaya yang didapat terbesar sehingga daya keluaran yang dihasilkan sejalan yaitu semakin besar pula.
Toxicity Test Using The Brine Shrimp Lethality Test (BSLT) Method on Extracts of Stem Bark, Stem Wood, and Leaves on Bayur (Pterospermum diversifolium B. Rob.) Zakaria, Zakaria; Soekamto, Nunuk Hariani; Dali, Nasriadi; Amalia, Hilda Ayu Melvi; Syarifuddin, Syamsidar Haji
Elkawnie: Journal of Islamic Science and Technology Vol 10, No 1 (2024)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v10i1.20380

Abstract

Abstract: Ethnobotanically, the leaves of P. diversifolium are used as a medicine for itching and the root bark is used as fish poison. The traditional use of natural materials should be followed by scientific studies. This study aims to determine the toxicity of the stem bark, stem wood, and leaf tissue extracts of P. diversifolium using the Brine Shrimp Lethality Test (BSLT) method. Extraction using maceration method with ethanol solvent for 3 x 24 hours. The macerate was filtered and the extract obtained was evaporated until a crude extract was obtained. The three ethanol extracts obtained were tested for toxicity and obtained LC50 values of stem bark = 4,753 ppm, stem wood = 97,723 ppm, and leaves = 27,797 ppm. All extracts were declared non-toxic because the LC50 value was more than 1000 ppm.Abstrak: Secara etnobotani, daun P. diversifolium digunakan sebagai obat gatal serta kulit akarnya sebagai racun ikan. Penggunaan bahan alam secara tradisional seharusnya diikuti kajian ilmiah. Penelitian ini bertujuan untuk mengetahui toksisitas pada ekstrak jaringan kulit batang, kayu batang, dan daun P.diversifolium dengan metode Brine Shrimp Lethality Test (BSLT). Ekstraksi menggunakan metode maserasi dengan pelarut etanol selama 3 x 24 jam. Maserat disaring dan ekstrak yang peroleh dievaporasi sampai didapatkan ekstrak kental. Ketiga ekstrak etanol yang diperoleh diuji toksisitasnya dan diperoleh nilai LC50 kulit batang = 4.753 ppm, kayu batang = 97.723 ppm, dan daun = 27.797 ppm. Semua ekstrak dinyatakan tidak toksik karena nilai LC50 lebih dari 1.000 ppm.

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