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All Journal Komunikasi Fisika Indonesia Jurnal Fisika Unand BULETIN FISIKA JOURNAL ONLINE OF PHYSICS ZERO : Jurnal Sains, Matematika dan Terapan Jurnal Redoks Zero : Jurnal Sains, Matematika, dan Terapan Fisitek : Jurnal Ilmu Fisika dan Teknologi Jurnal Kumparan Fisika Jurnal Ilmu dan Inovasi Fisika
Jumiati, Ety
Universitas Islam Negeri Sumatera Utara
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics

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Journal : Komunikasi Fisika Indonesia

 1 
ANALISIS UJI KIMIA KESADAHAN DAN BESI PADA AIR SUNGAI HULU BANGKO DENGAN MEDIA FILTRASI KARBON AKTIF KULIT KACANG TANAH Ety Jumiati; Abdul Halim Daulay; Putri Indah Sari
Komunikasi Fisika Indonesia Vol 19, No 3 (2022)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.19.3.141-145

Abstract

The filtering of river water has been carried out with the aim of knowing the edvantages of the river water upstream of Bangko before the filtration process is carried out, after the filtrations proces is caried out, and to determine the most optimum variation. In this study using the composition of activated carbon of peanut shells, silica sand, manganese, and zeolite with sample variations A (30% : 30% : 20% : 20%), B (35% : 25% : 20% : 20%), and C (40% : 20% : 20% : 20%). In this study, the chemical test parameters were: (hardness, and iron). The results of testing the river water before the filtration process has not met the PERMENKES RI No. 32 of 2017. Meanwhile, after the river water filtration process has met the clian waters standard based on the PERMENKES RI No. 32 of 2017. And the optimum variation is sample C with an activated carbon value of 40%.
ANALISIS SIFAT MEKANIK PLASTIK BIODEGRADABLE PATI BIJI ALPUKAT DAN SELULOSA SEKAM PADI Ety Jumiati; Miftahul Husnah; Sunny Nafisah
Komunikasi Fisika Indonesia Vol 20, No 1 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.1.69-74

Abstract

Biodegradable plastics have been investigated using avocado seed starch, rice husk cellulose, chitosan, and glycerol in order to determine the mechanical characteristics of biodegradable plastics. Variations in the composition of avocado seed starch and rice husk cellulose in each sample A (100% : 0%), B (87.5% : 12.5%), C (75% : 25%), D (62.5% : 37.5%), and E (50% : 50%). The process of making biodegradable plastic is carried out using a material mixing process using a magnetic stirrer and a hot plate at a maintained temperature of  ± 70°C − 80°C and dried in an oven. Mechanical tests carried out include tensile strength, elongation, and modulus of elasticity tests. The results of the mechanical characterization test for the optimal biodegradable plastic are found in sample E (50% : 50%) with a tensile strength value of 20.6123 MPa and an elastic modulus of  353.7985 MPa which meets the ASTM D882-12 standard.
ANALISIS STRUKTUR KARAKTERISASI XRD DAN SEM PADA REDUCED GRAPHENE OXIDE (rGO) LIMBAH BAN Sandi Tri Febriani; Ety Jumiati; Miftahul Husnah
Komunikasi Fisika Indonesia Vol 20, No 1 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.1.49-54

Abstract

Research has been carried out using waste tires as the basic material for reduced graphene oxide (rGO). This research has been successfully synthesized using waste tire smoke with combustion and microwave assisted methods as a faster, easier, and safer synthesis process. The characterizations used in this research are X-ray diffraction (XRD) and scanning electron microscope (SEM). The powder is obtained through the process of capturing smoke from burning waste tires manually at a temperaturre of 300°C for 3 hours. Then it was reduced using microwave heating with variations in heating time of 20, 25, and 30 minutes. The results of the XRD characterization data showed a diffraction peak (002) peak at 2θ = 25° and a diffraction peak (101) peak 2θ = 43.9° which identified rGO and the results of the SEM characterization test obtained that the surface morfology formed a thin sheet.
PENGARUH GELOMBANG MIKRO DAN SULFUR SEBAGAI AGEN PASIVASI TERHADAP SPEKTRUM ABSORBANSI KARBON DOTS BERBASIS BAN BEKAS Ananda Tira Septiana Sari; Ety Jumiati; Miftahul Husnah
Komunikasi Fisika Indonesia Vol 20, No 2 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.2.147-152

Abstract

Used tires that are not used are usually thrown away and cause damage and environmental pollution. Information on the use of used tires is still limited, used tires are usually used in the synthesis of nanomaterials such as in the field of nanotechnology. This research was conducted to determine whether carbon dots can be synthesized from used car tires, sulfur can be used as a passivation agent in the synthesis of carbon dots, and to determine the wave absorption and fluorescence of carbon dots synthesized purely and with the addition of a passivation agent.Sulfur was used as a passivation agent with a carbon and sulfur ratio of 1:1. Microwave time variations were used 30, 35, and 40 minutes. The UV-Vis characterization of carbon dots showed a higher absorbance with variations in the length of microwave time and the addition of passivation agents. Luminance analysis with UV lamp obtained a brighter glow on karbon dots with the addition of a passivation agent.
PENGARUH PENAMBAHAN KONSENTRASI NaCl TERHADAP NILAI KELUARAN LISTRIK BIOBATERAI SARI BUAH MENGKUDU Ety Jumiati; Miftahul Husnah; Riadina Siregar
Komunikasi Fisika Indonesia Vol 20, No 2 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.2.199-204

Abstract

Biobattery is a tool that can generate electrical energy from nature that is environmentally friendly, such as noni juice with the addition of NaCl concentration (0%, 10%, 20%). The purpose of this study (i) to determine the pH of the noni juice (ii) for the electrical conductivity of the noni juice (iii) to determine the electrical voltage of the noni juice (iv) to determine the electric current of the noni juice. This study used the galvanic cell method using copper (Cu) and zinc (Zn) electrodes. Based on the results of research conducted on noni juice, the highest value was obtained for noni juice with the addition of 20% NaCl concentration with pH: 2.5, Electrical conductivity: 4915 mS/cm3, voltage: 2.32 V, electric current: 3.12 mA, electric power: 7.23 mW. It can be stated that the lower the pH value, the higher the concentration of NaCl used, the greater the voltage, current, and electrical power obtained. In this study, the ability of noni juice to turn on a white LED light for 2 hours can light up with a stable voltage drop.
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): IN PROGRESS
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.3.%p

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 cm x 3 cm x 3 cm mold, fired using a furnace at 900 0C 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 16,60-50,80%, 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) TERHADAP SIFAT FISIS DAN MEKANIK KERAMIK ALUMINA Ayu Dwi Retno; Ety Jumiati; Ridwan Yusuf Lubis
Indonesian Physics Communication Vol 20, No 3 (2023): IN PROGRESS
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.3.%p

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 cm x 3 cm x 1 cm 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 are2.13-2.20 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.
ANALISIS UJI FISIS BRIKET AROMATERAPI BERBAHAN SERAI DAN SERBUK KAYU DENGAN PEREKAT PINUS MERKUSII Ervina Putri Wulandari; Ety Jumiati; Miftahul Husna
Indonesian Physics Communication Vol 20, No 3 (2023): IN PROGRESS
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.3.%p

Abstract

Aromatherapy briquettes have been made as an alternative fuel made from lemon grass, sawdust and pine resin. Composition variations between lemongrass and sawdust (meranti) in samples A (30% : 70%), B (40% : 60%), C (50% : 50%) with 60% pine resin adhesive. drying time 7 days. Physical test parameters carried out: density, moisture content and heat. The test results showed that the optimum aromatherapy briquettes were sample C which had a density value of 0.954 g/cm3, a moisture content of 7.81% and a calorific value of 8640 cal/g. The value of water content and heating value complies with SNI 01-6235-2000.
Co-Authors Abdul Halim Daulay Afifah Azmi Aiysah Hannum Pulungan Ananda Tira Septiana Sari asnitha aritonang Ayu Amalya Rahma Ayu Dwi Retno Bayu Anugrah KS Dika Prananda endang sagita ritonga Ervina Putri Wulandari Ismail Husein, Ismail Kiki Noviansyah Masthura, Masthura Meutia Nanda Miftahul Husna Miftahul Husnah Nanda Putri Afrilda Nazaruddin Nasution Nita Zahara Nasution Nujulia Subuharni Nur'aini Fadillah Nurlaila Sari Harahap Putri Indah Sari Ratni Sirait Riadina Siregar Ridwan Yusuf Lubis Ridwan Yusuf Lubis Ririn sagita Aruan Rizki Qorina Sandi Tri Febriani Siti Munawaroh Sunny Nafisah ufik eliati tumanggor