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All Journal Jurnal Sains dan Pendidikan Fisika Komunikasi Fisika Indonesia Phi : Jurnal Pendidikan Fisika dan Terapan Elkawnie JOURNAL ONLINE OF PHYSICS Jurnal Fisika FLUX AL ISHLAH Jurnal Pendidikan Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Redoks JISTech (Journal of Islamic Science and Technology) Fisitek : Jurnal Ilmu Fisika dan Teknologi JOURNAL OF SCIENCE AND SOCIAL RESEARCH Jurnal Kumparan Fisika Jurnal Geofisika Best Journal (Biology Education, Sains and Technology) Jurnal Teknologi Bahan dan Barang Teknik Jurnal Fisika dan Terapannya CHEDS: Journal of Chemistry, Education, and Science EINSTEIN (E-JOURNAL) Jurnal Ilmu dan Inovasi Fisika
Abdul Halim Daulay
Program Studi Fisika Fakultas Sains Dan Teknologi UIN Sumatera Utara Medan
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Journal : Jurnal Rekayasa Material, Manufaktur

 1 
Pengaruh Nilai Uji Tarik Terhadap Kuat Impak pada Komposit Serat Daun Nanas Hutauruk, Siti Aulia; Jumiati, Ety; Daulay, Abdul Halim
Rekayasa Material, Manufaktur dan Energi Vol 7, No 2: Juli 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i2.20288

Abstract

Research has been conducted to determine the effect of tensile test values on impact strength. Using an experimental method and a quantitative approach, the variations in the composition of pineapple leaf fiber with polyester resin adhesive are as follows: sample A (40%:60%), sample B (45%:55%), sample C (50%:50%), and sample D (55%:45%). The molding process used a hot press with a pressure of 0.1 MPa and a temperature of 150°C for 15 minutes. The preparation and testing of specimens referred to ASTM D638-03 for tensile testing and ASTM D6110-10 for impact testing. The tensile test results were 24.71 MPa for sample A, 25.97 MPa for sample B, 26.00 MPa for sample C, and 20.73 MPa for sample D. The impact strength results were 0.02779 J/mm² for sample A, 0.02997 J/mm² for sample B, 0.03044 J/mm² for sample C, and 0.0306 J/mm² for sample D. The experiment showed that as the tensile test values increased, there was an effect on the impact strength results..
PENGARUH KARBON AKTIF DAN SODIUM ALGINAT TERHADAP PENURUNAN KADAR GLIFOSAT TANAH TERCEMAR RESIDU PESTISIDA Sucitawati, Nopita; Daulay, Abdul Halim; Husnah, Miftahul
Rekayasa Material, Manufaktur dan Energi Vol 8, No 1: Januari 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i1.21507

Abstract

The widespread use of pesticides has led to soil contamination, one of which is caused by glyphosate residues. This study aims to examine the influence of activated carbon and sodium alginate on reducing glyphosate levels in contaminated soil. Various compositions of coconut shell-based activated carbon and sodium alginate were applied to soil samples to determine the effectiveness of glyphosate reduction. The results showed that the combination of these two materials significantly contributed to lowering glyphosate levels. Surface morphology characterization of the activated carbon using Scanning Electron Microscope (SEM) revealed that the pores and surface structure of the activated carbon play a crucial role in glyphosate adsorption. Activated carbon samples with sodium alginate variations demonstrated increased efficiency in pesticide residue absorption, particularly in samples with ratios of 100%:0%, 90%:10%, and 80%:20%. These findings confirm that activated carbon and sodium alginate are effective in reducing glyphosate levels, with the activated carbon’s morphology supporting optimal adsorption.
Sintesis Dan Karakterisasi Nanopartikel Fe3o4/Tio2-Co Dengan Variasi Suhu Kalsinasi Dalam Mendegradasi Methylene Blue Lubis, Hilwa Salsabila; Lubis, Ridwan Yusuf; Daulay, Abdul Halim
Rekayasa Material, Manufaktur dan Energi Vol 8, No 1: Januari 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i1.21755

Abstract

A study has been conducted on the effect of calcination temperature on the characteristics of Fe3O4/TiO2-Co nanoparticles for the degradation of Methylene Blue. The nanoparticles were synthesized using the coprecipitation method. The aim of this research was to investigate the influence of calcination temperature on the morphological structure, crystal size, and degradation percentage of Methylene Blue, with variations in calcination temperatures of 400, 500, and 600 °C. The samples were characterized using Scanning Electron Microscope (SEM), X-ray diffractometer (XRD), and UV-Vis Spectrophotometer. The SEM results indicated that at a calcination temperature of 400 °C, agglomeration still occurred. The XRD analysis showed that as the calcination temperature increased, the crystal size decreased, with the sizes for FTC400, FTC500, and FTC600 samples being 30.53 nm, 30.13 nm, and 28.74 nm, respectively. The UV-Vis test results revealed that the higher the calcination temperature, the higher the degradation percentage, reaching 99.40% for the FTC600 sample
Sintesis Dan Karakterisasi Kertas Berbahan Dasar Kulit Pisang Kepok Dan Kulit Durian Pasaribu, Adella Ayu Putri; Daulay, Abdul Halim; Husnah, Miftahul
Rekayasa Material, Manufaktur dan Energi Vol 8, No 1: Januari 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i1.19480

Abstract

Research has been carried out which aims to find out whether paper can be produced from kepok banana peels and durian peels, as well as knowing the characteristics of the paper produced and the optimum variations. The materials used for Kepok banana peels and durian peels are waste from Kepok banana peels and durian peels that are no longer used. Variations in the composition of Kepok banana peel and durian peel used include 30:70 (sample A), 50:50 (sample B), 70:30 (sample C). The characteristics of this research are grammage test, tensile resistance test, tensile strength test, water content test, and (SEM) test. The research results showed that the grammage test results for sample A were 56.66 g/m², sample B was 53.33 g/m², sample C was 50.33 g/m². The tensile resistance test value for sample A is 2.218MPa, sample B is 0.247MPa, sample C is 1.074 MPa. The tensile strength test value for sample A was 0.37%, sample B was 0.29%, and sample C was 0.35%. The water content test value for sample A was 5.1%, sample B was 1.5%, and sample C was 4.3%. The optimum characteristics found in sample A are variations in mixing kepok banana peel and durian peel 30:70.
Efektivitas Adsorben Berbasis Alginat Dan Karbon Aktif Ampas Kopi Dalam Menurunkan Kadar Cod Limbah Cair Industri Tahu Aisyah, Siti Nur; Daulay, Abdul Halim; Ong, Russell
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.23222

Abstract

Oxygen Demand (COD), requiring treatment before disposal into the environment. This study aims to evaluate the effectiveness of an adsorbent based on coffee waste-derived activated carbon and sodium alginate in reducing COD levels in tofu wastewater. The activated carbon used has been tested for quality and meets the Indonesian National Standard (SNI 06-3730-1995). The remediation process was conducted using five different adsorbent composition variations. The results showed that the combination of coffee waste-derived activated carbon and sodium alginate significantly reduced COD levels, achieving a maximum reduction efficiency of 90.55% at the optimum variation (Sample E). The adsorption mechanism involving alginate polymers and the porosity of activated carbon contributed to the effective removal of organic compounds from the wastewater. Based on the analysis, this method has proven to be effective in reducing COD levels, making it a potential environmentally friendly alternative for treating tofu industry wastewater.
Pemanfaatan Sodium Alginat Dan Karbon Aktif Ampas Tebu Untuk Menurunkan Kadar Besi (Fe) Dan Mangan (Mn) Pada Air Sumur Bor Nasution, Annisa Wulan Dhari; Daulay, Abdul Halim; Jumiati, Ety
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.23221

Abstract

Drilled well water contains heavy metals with high levels of iron (Fe) and manganese (Mn). This research aims to evaluate the successful use of sodium alginate and sugarcane bagasse activated carbon to reduce iron (Fe) and manganese (Mn) levels. The remediation method was successfully used to reduce iron (Fe) and manganese (Mn) levels in drilled well water. The quality of the activated carbon used has been tested and meets the SNI 06-3730-1995 quality standards. The remediation process was carried out with five composition variations used in this research, namely Sample A (SA 5% : KAAT 95%), Sample B (SA 15% : KAAT 85%), Sample C (SA 25% : KAAT 75%), Sample D (SA 35% : KAAT 65%), and Sample E (SA 45% : KAAT 55%). The results of this research show that the combination of activated carbon with bagasse is able to reduce iron (Fe) and manganese (Mn) levels significantly, with the best results in reducing iron and manganese levels found in sample C, namely with iron (Fe) levels of 89.72% and manganese (Mn) content of 99.82%. Based on the analysis results, this method was proven to be effective in reducing iron and manganese levels.
Co-Authors Adelyna Oktavia Nasution Ahmad Nuruddin Aida Febriana Tanjung Amanda, Syahna Dwi Anggun Hermi Palupi Apriyana, Resi Armais Mutiah Abdul Hidayat Arninda Pratiwi asnitha aritonang Aulia Farihanum Aulia Khusnul Arif Z.A Ayu Saputri Saragih Bambang Sunendar Purwasasmita Bharata Dewanto Daulay, Zubair Aman Daulay, Zubair Aman Dickiy Akbar Dita Khairunnisa endang sagita ritonga Ependi, Fadli Ety Jumiati Ety Jumiati Ety Jumiati Fadhilah, Elsa Harahap, Gery Syahputra harahap, mira yanti Haryu Wanda Desgira Heni Puspita Sari Husna, Afifah Husna, Afifah Hutauruk, Siti Aulia Indah Sawitri Irmawati Koto Jefri Ardiansyah Nasution Jumiati, Ety Jumiati, Ety Juwita Juwita Kartika Manalu Khairiah, Khairiah Khairiah, Khairiah Khairiah, Khairiah Khairul, Fikri Khairunnisa, Devi Khobir, Mustofa Lailatul Husna Lubis Lansari Daulay Laras Ashari Setiawan Leli Mariati Situmorang Lespita, Jeni Dhea Lisa Astari Lisa Herdiana Sinurat Lubis, Fadilah Azzahra Lubis, Hilwa Salsabila Lubis, Lailatul Husna Lubis, Ridwan Yusuf Lubis, Rizky Wahyuni Masthura Masthura Masthura Masthura, Masthura Miftahul Husnah Miftahul Husnah Miftahul Jannah Daulay Miftahul Jannah Daulay Minta Ito Muhammad Amrin Siregar Muhammad Amrin Siregar Mulkan Iskandar Nasution Mulkan Iskandar Nasution Nadilla Putri Nadjara Yolanda Nanda Putri Afrilda Nasution, Annisa Wulan Dhari Nasution, Nazaruddin Nazaruddin Nasution Nita Zahara Nasution Nur'aini Fadillah Nurainun Br Pasaribu Nurhayati Nurhayati Nurika Khalila Daulay Nurmaisah Harahap Ong, Russell Pasaribu, Adella Ayu Putri Pinem, Lela Feranita Prabowo, Diki Purnama Indah Lase Putra, Tyas Hermawan Putri Dwi Ananda Putri Indah Sari Putri Rabiatul Amalia Sitorus Rahmasari Pohan Ramidin, Ramidin Ratni Sirait Ratni Sirait Reflina Reflina Ria Muliyana Ridwan Yusuf Lubis Rika Ramtika Rika Safitri Riri Angriani Nasution Rosari, Ruri Sahdinal Adi sari, Bella Novita selvia, niki Sholihatul Hamidah Daulay Sihombing, Zulkarnain Sirait, Ratni Siregar, Shinta Marito Siska Siska Siti Hawa Hasibuan Siti Maysarah Siti Nur Aisyah Siti Rahma Daulay Sitorus, Widia Arti Syafitri Sri Wahyuni Ritonga Sucitawati, Nopita Sugeng Sugeng Susanto Sigit Rahardi Susi Nurindah Tri Ninda Malika Tunjiah , ufik eliati tumanggor Utari, Dinda Widia Arti Syafitri Widya, Eka Zafira Amalia Nasution Zubair Aman Daulay