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All Journal Komunikasi Fisika Indonesia Phi : Jurnal Pendidikan Fisika dan Terapan Jurnal Fisika Unand JOURNAL ONLINE OF PHYSICS Jurnal Sains & Teknologi Lingkungan Jurnal Fisika FLUX Jurnal Ilmiah Universitas Batanghari Jambi Jurnal Rekayasa Material, Manufaktur & Energi JISTech (Journal of Islamic Science and Technology) Fisitek : Jurnal Ilmu Fisika dan Teknologi JOURNAL OF SCIENCE AND SOCIAL RESEARCH Saintifik : Jurnal Matematika, Sains, dan Pembelajarannya Jurnal Teori dan Aplikasi Fisika Jurnal Pengabdian kepada Masyarakat Nusantara Navigation Physics : Journal of Physics Education JTTM: Jurnal Terapan Teknik Mesin CHEDS: Journal of Chemistry, Education, and Science Phydagogic : Jurnal Fisika dan Pembelajarannya JIFP (Jurnal Ilmu Fisika dan Pembelajarannya) Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan EINSTEIN (E-JOURNAL) Jurnal Ilmu dan Inovasi Fisika Jurnal Penelitian Teknologi Informasi dan Sains
Ridwan Yusuf Lubis
Universitas Islam Negeri Sumatera Utara
Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Pengaruh Nilai Kalor Terhadap Lamanya Waktu Pembakaran Briket Bioarang Biji Alpukat dan Biji Durian Sonia Tampubolon; Ety Jumiati; Ridwan Yusuf Lubis
JIIF (Jurnal Ilmu dan Inovasi Fisika) Vol 7, No 2 (2023)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jiif.v7i2.45890

Abstract

Kebutuhan masyarakat yang terus meningkat sesuai dengan taraf hidup mereka, minyak pemanas (BBM) menempati posisi yang sangat utama dalam pemenuhan kebutuhan energi nasional. Minyak bumi menjadi semakin terbatas seiring bertambahnya populasi karena semakin banyak orang menggunakannya untuk tujuan yang berbeda. Briket bioarang adalah bahan bakar alternative yang dibuat dari biomassa yang dapat memperbesar seperti limbah pertanian, kayu, atau biji-bijian. Penelitian ini berfokus pada penggunaan biji alpukat dan biji durian sebagai bahan baku briket bioarang. Riset ini bertujuan (i) untuk mengetahui pengaruh nilai kalor terhadap biji alpukat dan biji durian. (ii) Untuk mengetahui lamanya waktu pembakaran. Variasi komposisi biji alpukat dan biji durian yang diteliti adalah sampel A (25%:75%), sampel B (35%:65%), sampel C (75%:25%), sampel D (65%:35%). Dengan parameter nilai kalor dan laju pembakaran. Karakteristik  briket  bioarang  yang  diperoleh  antara  lain  : nilai calorimeter adalah 7036,63 kal/g - 7277,15 kal/g. Nilai laju pembakaran adalah 1,13g/menit - 1,47 g/menit.                          Kata kunci: briket, biji alpukat, biji durian, dan damar
ANALISIS PENGARUH PENAMBAHAN DAUN JAGUNG PADA KERAMIK BERPORI BERBAHAN DASAR TANAH LEMPUNG Ayu Amalya Rahma; Ety Jumiati; Ridwan Yusuf Lubis
Indonesian Physics Communication Vol 20, No 3 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.3.267-274

Abstract

Corn leaves are agricultural waste that contains silica compounds and functions to reduce cracks in the drying of porous ceramics. Variations in the composition of clay and corn leaf ash are: 100% : 0%; 90% : 10%; 80% : 20%; and 70% : 30%. The manufacture of porous ceramics uses a dry pressing technique with a presure of 4 tons for 10 minutes, using a 3 × 3 × 3 cm3 mold, fired using a furnace at 900°C for 2 hours and allowed to cool for 24 hours. The characterization used namely density, porosity, water absorption, hardness and compressive strength. The result of the charaterization of porous ceramics is: density 1,20 – 1,79 g/cm3; porosity 29,75% – 61.03%; water absorption 16,6% – 50,8%; hardness 41,41 – 187,58 MPa; and compressive strength 3,51 – 84,49 MPa. The more addition of corn leaf ash caused an increase in porosity and to water absorption and decrease in density, hardness and compressive strength.
PENGARUH PENAMBAHAN ADITIF DAUN JAGUNG (Zea mays L.) TERHADAP SIFAT FISIS DAN MEKANIK KERAMIK ALUMINA Ayu Dwi Retno; Ety Jumiati; Ridwan Yusuf Lubis
Indonesian Physics Communication Vol 20, No 3 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.3.275-278

Abstract

Research has been carried out on the manufacture of alumina ceramics. This study aims to determine the effect of the addition of corn leaf additives on the physical and mechanical properties of alumina ceramics. Variations in the composition of alumina and corn leaf ash are: 95% : 5%; 90% : 10%; and 85% : 15%. The process of making these ceramics uses the die prissing method, and uses variations in firing temperature, namely 1300°C  and 1400°C for 1 hour, and is printed using a 3 × 3 × 1 cm3 mold. the characterization of the tests carried out included physical properties, namely density and porosity and mechanical properties, namely hardness.  The  results of the data obtained from  measuring  the  density  at 1300°C are 2.11 – 2.18 g/cm3 and at 1400°C they are 2.13 – 2.20 g/cm3, the porosity at 1300°C is 25.82% – 27.25% and 1400°C temperature of 25.36% – 26.89%, and 1300°C temperature hardness test of 59.641 MPa – 67.055 MPa and 1400°C temperature of 61.926 MPa – 70.958 MPa.
PENGARUH GRAMATUR TERHADAP DAYA REGANG PADA PEMBUATAN KERTAS BERBAHAN KULIT Aiysah Hannum Pulungan; Ety Jumiati; Ridwan Yusuf Lubis
JOURNAL ONLINE OF PHYSICS Vol. 8 No. 3 (2023): JOP (Journal Online of Physics) Vol 8 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v8i3.24096

Abstract

Kertas adalah bahan tipis dan pipih yang terbuat dari serat-serat dari pulp yang digiling dan beberapa bahan yang selalu saling menempel. Serat yang digunakan berasal dari bahan alami antara lain selulosa dan hemiselulosa.Penelitian ini dilakukan untuk pembuatan kertas dari kulit singkong menggunakan aktivator NaOH 3%, 3,5% dan 4%. Penelitian yang dilakukan yaitu dengan metode eksperimen secara kuantitatif. Berdasarkan hasil pengujian diperoleh pengujian meliputi gramatur, daya regang serta karakterisasi SEM. Dari pengujian dapat dihasilkan nillai gramatur sampel A = 49,33 g/cm2, sampel B = 50,33 g/cm2, sampel C = 56,33 g/cm2, dan hasil nilai daya regang sampel A = 0,0015%, sampel B= 0,0024 %, dan sampel C = 0,0029%. Hasil SEM menunjukkan kertas yang diaktivasi NaOH 4% memiliki serat yang lebih rapat dibandingkan kertas yang diaktivasi NaOH 3% dan 3,5%. Dari hasil nilai karakterisasi sampel dapat diketahui bahwa sampel C merupakan sampel yang terbaik dengan pengaruh NaOH 4% yang telah memenuhi SNI No 14-0937-2005 mengenai kertas.
PERANAN AKIVATOR DAN LUAS PENAMPANG KARBON AKTIF TERHADAP KEMAMPUAN ADSORPSI KARBON AKTIF PADA MINYAK GORENG BEKAS PAKAI Miftahul Husnah; Ridwan Yusuf Lubis; Lisa Astari
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.26005

Abstract

Used oil or used cooking oil is oil that is produced from leftover frying. The high price of cooking oil and the high need for use also makes fried traders use used cooking oil continuously which has a negative impact on health. This study aims to determine the role of activators and cross-sectional area on the adsorption ability of activated carbon produced from nipa palm shells in the process of refining used oil. The sample used is used cooking oil which is then adsorbed using activated carbon with different cross-sectional areas. Analysis of the cross-sectional area shows that variations in the concentration of NaCl as an activator in the manufacture of activated carbon from nipa palm shells affect the cross-sectional area, the higher the concentration of NaCl activator, the greater the cross-sectional area of activated carbon produced. The surface area of activated carbon activated by NaCl 0M, 4M, 6M and 8M had respective values of 11.1489 m2/g, 11.4487 m2/g, 11.5028 m2/g, 11.5079 m2/g. The results show that the greater the cross-sectional area of activated carbon, the greater the ability of activated carbon to adsorb used oil, with a value of water content and volatile matter of 0.2612% - 0.1195%, peroxide of value (POV) of 11.8629 meq/g - 5.3029 meq/g, Acid Value (AV) of 1.3368 mg KOH/g - 0.5393 mg KOH/g. Optimum results were obtained on activated carbon activated with 8M NaCL activator, this was due to the increasing concentration of the activator, more pores were formed so that the absorption capacity of activated carbon also increased.
Karakterisasi Pasir Besi (Fe3O4) Sungai Seruai Kabupaten Deli Serdang Ridwan Yusuf; Ridwan Yusuf Lubis
Jurnal Ilmu Fisika dan Pembelajarannya (JIFP) Vol 7 No 2 (2023): Jurnal Ilmu Fisika dan Pembelajarannya (JIFP)
Publisher : Program Studi Pendidikan Fisika, UIN Raden Fatah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/jifp.v7i2.19858

Abstract

In this research, iron sand was obtained from the Sei Serayu river in Deli Serdang Regency. The method for extracting iron sand is by manual extraction using a permanent magnet. The samples that have been obtained are then given temperature treatment with variations of 500 o C, 600 o C and 700 o C so that the iron sand undergoes oxidation. Next, the samples that have been heat treated are characterized using XRD, SEM and XRF. From the XRD test results it was found that the sample consisted of Fe3O4 with a magnetite phase. XRD diffraction peaks were obtained at angles 2θ: 17.26 o, 29.98 o, 35.4 o, 43.16 o, 57.08 o, and 62.56 o. SEM test results show that sample D contains magnetite (Fe3O4) with a silver color. Based on the analysis of test results, it can be concluded that the most optimal results are found in sample D with a sintering temperature of 700o C.
Karakterisasi Pasir Besi (Fe3O4) Sungai Seruai Kabupaten Deli Serdang Ridwan Yusuf; Ridwan Yusuf Lubis
Jurnal Ilmu Fisika dan Pembelajarannya (JIFP) Vol 7 No 2 (2023): Jurnal Ilmu Fisika dan Pembelajarannya (JIFP)
Publisher : Program Studi Pendidikan Fisika, UIN Raden Fatah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/jifp.v7i2.19858

Abstract

In this research, iron sand was obtained from the Sei Serayu river in Deli Serdang Regency. The method for extracting iron sand is by manual extraction using a permanent magnet. The samples that have been obtained are then given temperature treatment with variations of 500 o C, 600 o C and 700 o C so that the iron sand undergoes oxidation. Next, the samples that have been heat treated are characterized using XRD, SEM and XRF. From the XRD test results it was found that the sample consisted of Fe3O4 with a magnetite phase. XRD diffraction peaks were obtained at angles 2θ: 17.26 o, 29.98 o, 35.4 o, 43.16 o, 57.08 o, and 62.56 o. SEM test results show that sample D contains magnetite (Fe3O4) with a silver color. Based on the analysis of test results, it can be concluded that the most optimal results are found in sample D with a sintering temperature of 700o C.
Effect of calorific value on the burning rate of coconut shell briquettes and teak wood powder Nur Aisah Sagala; Ety Jumiati; Ridwan Yusuf Lubis
Indonesian Physics Communication Vol 21, No 1 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.1.41-44

Abstract

Biomass energy can be utilized inside, particularly in coconut shells with pine gum and teak sawdust as an elective fuel that is harmless to the ecosystem. To deliver charcoal briquettes from teak wood sawdust and coconut shells, this study endeavored to decide the qualities, impacts, and structure of varieties in pine tar cement. Pine resin adhesive is mixed with teak sawdust and coconut shells in a ratio of 80% to 20%, with variations of 30%, 40%, and 50%. For briquettes, utilize a size of 5 × 5 × 5 cm3. The aftereffects of the briquette test which delivered ideal qualities were gotten in example C with a warming worth of 31.073l J/gram and a consuming pace of 1,3697 g/minute according to SNI-01-6235-2000 and close to standard.
The effect of variations in corncob activated carbon filter media with zeolite in digging well water purification Ridwan Yusuf Lubis; Ety Jumiati; Arif Amri Panggabean
Indonesian Physics Communication Vol 21, No 2 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.2.165-170

Abstract

Water is the most important element in human life, because almost all human activities require water, especially clean water which has a main function that cannot be replaced by other compounds. The aim of this research was to determine the quality of dug well water after the filtering process using corncob activated carbon and zeolite, as well as to find out which variations are optimal for obtaining clean water according to the Republic of Indonesia Minister of Health Regulation No. 32 of 2017. The strategy used to obtain clean water is the filtration technique. by organizing zeolite and activated carbon. The samples used came from Bandar Setia Village, Percut Sei Tuan District, Deli Serdang Regency, North Sumatra Province. Activated carbon is made from corn cobs which are activated with a 10% H3PO4 solution for 24 hours. The composition of the purification system is varied into three, variation A is zeolite 75% and active carbon 25%, variation B is zeolite 50% and active carbon 50%, and variation C zeolite 25% and active carbon 75%. The greatest variation in reducing parameters in dug well water is variation A with a turbidity value of 3.7 NTU, Mn of 0.011 mg/l and KMnO4 of 5.8 mg/l. It can be explained that the results of this test are in accordance with clean water standards based on the PERMENKES Republic of Indonesia No. 32 of 2017. The results of this research that are most optimal in reducing parameters in dug well water are variation A.
Asam Fosfat Sebagai Aktivator Karbon Aktif Tempurung Buah Nipah Husnah, Miftahul; Lubis, Ridwan Yusuf
Phi: Jurnal Pendidikan Fisika dan Terapan Vol 8, No 2 (2022)
Publisher : Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/p-jpft.v8i2.15413

Abstract

Telah dilakukan penelitian pembuatan karbon aktif dari tempurung buah nipah dengan menggunakan aktivator asam posfat. Tempurung buah nipah dapat digunakan untuk menghasilkan karbon aktif setelah melalui proses aktivasi secara fisika dan kimia, hal ini terlihat dari mayoritas hasil pengujian yang telah memenuhi standar arang aktif teknis. Penelitian ini bertujuan untuk mengetahui karbon aktif tempurung buah nipah dengan aktivator H3PO4. Proses karbonisasi dilakukan menggunakan oven dengan suhu 500 ºC dalam waktu 1 jam. Proses aktivasi karbon dilakukan menggunakan. Aktivasi kimia dilakukan menggunakan larutan H3PO4 direndam selama 24 jam dengan variasi konsentrasi 0, 2, 4, dan 6 M. Analisis yang dilakukan meliputi uji kadar air, kadar zat mudah menguap, kadar abu, dan kadar karbon. Hasil pengukuran nilai kadar air 5,45-7,72%, kadar zat mudah menguap 22,56-36,10%, kadar abu 11,21-26,45%, dan kadar karbon Terikat 37,45-66,23%. Seiring dengan peningkatan konsentrasi aktivasi maka cenderung terjadi penurunan pada nilai kadar air, kadar zat mudah menguap, dan kadar abu. Serta terjadi kenaikan pada nilai kadar karbon terikat. Karbon aktif tempurung buah nipah dengan karakteristik yang optimum dihasilkan pada konsentrasi aktivasi 6 M
Co-Authors ., Masthura Abdul Halim Daulay Ahya Zaelani Aiysah Hannum Pulungan Ali Affan Silalahi Amalia, Fadiah Nur Arif Amri Panggabean Arnydhinata, Ella Ayu Amalya Rahma Ayu Dwi Retno Basri Btr, Mhd Hasan Br Situmorang, Dinda Agelia Cahyani, Rahmatika Fitri Chalista Dwi Putri Della Damayanti, Della Devi khairani Ety Jumiati Ety Jumiati Fahmijal Lb Fatya Sheila Husna Fazira, Natasya Aulia Hakim, Ibnu Harahap, Balkis Br Hayatul Hasanah Insani, Rizki Jihan Nabila Jumiati, Ety Jumiati, Ety Khairani, Suci Khairunnisa, Umi Khairunnisa Kholidah Agustina Lailatul Husna Br Lubis Lailatul husna lubis Lenni, Nurma Lili Anriani Harahap Lisa Astari Lisa Astari Lubis, Hariyati Lubis, Haryati Lubis, Hilwa Salsabila Maharani Rangkuti, Dea Mahyuda, Maulana Masthura Miftahul Husnah Miftahul Husnah Miftahul Husnah Mulkan Iskandar Nasution Mulkan Iskandar Nasution Mutiara Sani Nasution, Fajar Siddik Nasution, Mutia Fadilah Nasution, Nazaruddin Nasution, Nazaruddin Natasya, Kinanty Desiva Nazaruddin Nasution Noviansyah, Kiki Nur Aisah Sagala Nurlisa, Siti Putri, Eka Julia Rabiatul Awiyah Rambe, Khoirunnisa Fadila Ratni Sirait Ratni Sirait Ratni Sirait, Ratni Rizqi Dwi Nugraha Safina, Nurul Sariah, Jati Nur Silalahi, Ali Affan Sirait, Ratni Sirait Siregar, Alfia Delmi Siti Aulia Hutauruk Siti Khairani Sinaga, Siti Khairani Sitompul, Yusril Padli Sonia Tampubolon Syahrani, Vania Retna Tiara, Finky Manda Yolanda Afifa