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All Journal Jurnal Teknologi Sinergi Seminar Nasional Teknik Kimia Kejuangan Prosiding Semnastek JURNAL KONVERSI Mechanical Engineering for Society and Industry
Alvika Meta Sari
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Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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STUDI PENGEMBANGAN NANOFLUIDA HIJAU BERASAL DARI BAHAN LOKAL ALAM UNTUK APLIKASI DI BIDANG TEKNIK Kushendarsyah Saptaji; Alvika Meta Sari; Anwar Ilmar Ramadhan; Istianto Budhi Rahardja; Muhammad Dadi Saputra; Firmansyah Firmansyah; Efrizon Umar
Jurnal Teknologi Vol 15, No 2 (2023): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.15.2.345-358

Abstract

The increase in energy demand causes a continuous increase in global temperatures exceeding pre-industrial temperatures with the release of toxic gases and radiation causing severe climate conditions. So, it is mandatory to develop durable and highly efficient thermal systems to overcome these problems. There has been much research into nanofluids to improve performance in thermal applications and have gained significant attention over the past few years due to their superior qualities. Additionally, other undesirable effects such as corrosion of equipment, non-biodegradable by-products occur due to the presence of strong chemicals. Therefore, the development of cost-effective and environmentally friendly nanofluids has emerged as a fast-growing alternative research field with many enthusiasts. The current review provides a comprehensive view of the various techniques used in the preparation of green nanofluids using several natural extracts. The unique morphology, optical properties, stability, high surface area, lower toxicity, and improved thermo-physical properties of green nanoparticles make them favorable choice candidates in enhancing the performance of thermal systems.
SINTESA NANO ZIRKON DARI PASIR ZIRKON LOKAL DENGAN METODE FUSI KAUSTIK SODA-PRESIPITASI-KALSINASI Alvika Meta Sari; Efrizon Umar; Djoko Hadi Prajitno; Rian Fitriana; Anwar Ilmar Ramadhan; Firmansyah Firmansyah; Istianto Budhi Rahardja; Akmal Imam Faisal; Fikriyansyah Fikriyansyah
Jurnal Teknologi Vol 15, No 2 (2023): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.15.2.189-198

Abstract

Indonesia is one of countries that has the potential of mineral natural resources in the form of zircon sand. Zircon sand is a raw material that has the potential to be synthesized into nano zircon because of its ingredients of zircon oxide (ZrO2). In this study the aim was to study the aim to synthesize nano zircon from local zircon sand from Kalimantan using caustic soda-precipitation-calcination modification method. Nano zircon was prepared in this study by modifying existing methods, namely caustic fusion, washing, acid leaching using hydrochloric acid, precipitation using ammonia and calcination processes to produce nano zircon in the form of white powder. The efficiency of the process was analyzed by calculating the yield of the product formed, then the FTIR (Fourier Transform Infra-Red) spectroscopic test was performed to determine the functional groups of nano zircons and the morphology was analyzed using SEM (Scanning Electron Microscopy). Yield obtained is 2.7%  with the size of nano zircon is 41.983 nm. The FTIR spectrum shows the presence of the-Zr-O2 functional group at wave numbers 600 – 700 cm-1.
Investigation of Thermal Conductivity and Dynamics Viscosity of Green Nanofluids (ZrO2-SiO2) Ramadhan, Anwar Ilmar; Saptaji, Kushendarsyah; Hendrawati, Tri Yuni; Sari, Alvika Meta; Umar, Efrizon; Aziz, Azmairit; Semendo, Rifqi Putra; Setiawan, Hanif Rama Yuda; Firmansyah, Firmansyah
Jurnal Teknologi Vol 16, No 2 (2024): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.16.2.301-312

Abstract

In recent years, research has been directed towards improving the thermophysical properties of single-component nanofluids. Therefore, hybrid or composite nanofluids are developed to improve heat transfer performance. The thermophysical properties of ZrO2-SiO2 nanoparticles suspended in a mixture of water (W) and ethylene glycol (EG) with vol 60:40 or Green Nanofluids for various volume concentrations were investigated. Experiments were performed for volume concentrations of 0.1, 0.2, and 0.3% of green nanofluids at 50, 60, 70, and 80°C. Measurements of thermal conductivity and dynamic viscosity are performed at temperatures ranging from 50-80°C. The highest thermal conductivity of the green nanofluids is obtained at a concentration of 0.3%, and the maximum increase is up to 37.5% higher than the base fluid (EG/W). Meanwhile, evidence from the dynamic viscosity of green nanofluids is affected by concentration and temperature. Furthermore, the green nanofluids behave as a Newtonian fluid in a volume concentration of 0.1-0.3%. In conclusion, the combination of increased thermal conductivity and dynamic viscosity at a concentration of 0.3% has optimal conditions, which has more advantages for heat transfer than at other concentrations.
Effect of Mass Composition on Nano Zircon Synthesize from Local Zircon Sand Using Soda-Precipitation-Calcination-Caustic Fusion Method Sari, Alvika Meta; Ramadhan, Anwar Ilmar; Rahardja, Istianto Budhi; Umar, Efrizon; Yudistirani, Sri Anastasia; Faisal, Akmal Imam; Fikriyansyah, Fikriyansyah; Azmi, Wan Hamzah
Jurnal Teknologi Vol 16, No 2 (2024): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.16.2.169-178

Abstract

Zircon sand has the major component of ZrO2 with impurities SiO2, Fe2O2, and TiO2. Zircon sand can be synthesized using various methods, such as caustic fusion method. This research purposed to determine the effect of the mass composition of NaOH on fusion process of zircon sand and to find the optimal mass ration of NaOH on yield and characteristics of nano zircon produced. This research was conducted using caustic fusion and precipitation process to obtain the mass ration of NaOH in best zircon sand fusion (melting) process. The nano zircon obtained was analyzed its size using SEM and chemical composition using FTIR. The result show that the correlation between NaOH ration and yield following the equation y = 0.42x2-2.532x+3.908 and R2 =0.9696. It showed that the higher NaOH composition will reduce the size of nano zircon. The optimum NaOH ratio is 1 : 3.6 with size od 41.983 nm and yield 1.84% which in white, odorless and powder texture. The FTIR spectrum showed the presence of the -Zr-O2 functional groups at wave numbers 600 – 700 cm-1.
Pengaruh penambahan Ekstrak Biji Kelor sebagai Antioksidan Masker Gel peel off Sari, Fatma; Sari, Alvika Meta; Nugrahani, Ratri Ariatmi; Kurniaty, Ika; Putri, Dirga Aulia Eka
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Compounds called antioxidants are particularly beneficial to human health. Antioxidant substances are frequently utilized as free radicals because they can prevent the growth of oxidation reactions. Because of their high antioxidant content, moringa seeds produce oil that is resistant to rancidity and does not easily oxidize.  The peel-off gel mask formulation in this investigation included Moringa seed oil extract as a source of natural components. The goal of this study was to evaluate the antioxidant activity of a peel-off gel mask preparation made from Moringa seed oil extract. Maceration extraction is the technique used for extraction, and DPPH is the technique used to test for antioxidants. The results showed that the sample with a solvent volume of 450 ml had the best yield (34.64%), and the antioxidant activity of the extract of Moringa seed oil was measured at 256.89 g/ml with an average pH of 5.79.  The Moringa seed oil extract peel-off gel mask has the attributes of being white, thick, and smelling like moringa seeds. The peel-off gel mask gets thicker the more Moringa seed oil extract there is in it. This study establishes the potential of using Moringa seed oil extract in peel-off gel mask formulations extract in peel-off gel mask formulations.
Experimental investigation on stability and thermal conductivity of SiO2 nanoparticles as green nanofluids for application thermal system Ramadhan, Anwar Ilmar; Umar, Efrizon; Hendrawati, Tri Yuni; Sari, Alvika Meta; Rahardja, Istianto Budhi; Aziz, Azmairit; Firmansyah, Firmansyah; Yulianto, Sulis; Azmi, Wan Hamzah
SINERGI Vol 28, No 3 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.3.018

Abstract

In the last few years, much research has focused on the stability and improvement of the thermo-physical properties of single-component nanofluids. Some studies have not made many improvements to the stability and thermophysical properties of various types of green nanofluids from several variations of nanoparticles. Green nanofluids must be developed to improve heat transfer performance from their stability and thermal conductivity factors. Stability and thermal conductivity of Nano-silicate suspended in a base mixture of water /ethylene glycol with the ratio of 60:40, different volume concentrations were investigated. The experiments carried out were the stability of the green nanofluids investigated for volume concentrations of 0.1~0.3% and temperature conditions from 30 to 70°C for thermal conductivity measurement using TEMPOS Thermal Properties Analyzer. The experimental results showed that the stability analysis of the green nanofluids prepared by the UV-Vis method was stable up to 30 days after preparation with a sonication time of 1 hour with a ratio of 70-80%. The evaluation of the zeta potential for green nanofluids obtained a value of 33.57 mV with a moderate stability classification. The highest thermal conductivity for the green nanofluids was obtained at 0.3%, and the maximum increase was 17% higher than that of the base liquid (W/EG). Green nanofluids with a concentration of 0.1% gave the lowest effective thermal conductivity of 1.09 time at 70°C.
Heat transfer performance of Al2O3-TiO2-SiO2 ternary nanofluids in plain tube with wire coil inserts Ramadhan, Anwar Ilmar; Umar, Efrizon; Azmi, Wan Hamzah; Sari, Alvika Meta
Mechanical Engineering for Society and Industry Vol 4 No 1 (2024)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.10996

Abstract

The ternary nanofluids are considered due to their advantages in overcoming the stability drawback of mono and binary nanofluids. This study aims to heat transfer performance of Al2O3-TiO2-SiO2 ternary nanofluids in plain tube with wire coil under experimental. The ternary nanofluids were formulated using the composition ratio of 20:16:64 by volume in various volume concentrations ranging from 0.5 to 3.0%. Thermal conductivity and dynamic viscosity of ternary nanofluids were measured with KD2 Pro Thermal Properties Analyzer and Brookfield LVDV III Rheometer. Experimental forced convection heat transfer was carried out using a fabricated setup for Reynolds numbers from 2,300 to 12,000 at bulk temperature of 70 °C in plain tubes with wire coil inserts (0.83 ≤ P/D ≤ 2.50). Experimental results are highest thermal conductivity enhancement of 24.8% was obtained for ternary nanofluids at 3.0% volume concentration. The 3.0% volume concentration also shows the highest viscosity at all temperatures. The maximum heat transfer improvement for ternary nanofluids in a plain tube with wire coil (P/D-0.83), was attained by 3.0% volume concentration of up to 199.23%. The average TPF of the wire coil increases compared to the plain tube and improves further with volume concentrations in the range of 2.39 to 2.84.
Pengaruh penambahan Ekstrak Biji Kelor sebagai Antioksidan Masker Gel peel off Sari, Fatma; Sari, Alvika Meta; Nugrahani, Ratri Ariatmi; Kurniaty, Ika; Putri, Dirga Aulia Eka
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Compounds called antioxidants are particularly beneficial to human health. Antioxidant substances are frequently utilized as free radicals because they can prevent the growth of oxidation reactions. Because of their high antioxidant content, moringa seeds produce oil that is resistant to rancidity and does not easily oxidize.  The peel-off gel mask formulation in this investigation included Moringa seed oil extract as a source of natural components. The goal of this study was to evaluate the antioxidant activity of a peel-off gel mask preparation made from Moringa seed oil extract. Maceration extraction is the technique used for extraction, and DPPH is the technique used to test for antioxidants. The results showed that the sample with a solvent volume of 450 ml had the best yield (34.64%), and the antioxidant activity of the extract of Moringa seed oil was measured at 256.89 g/ml with an average pH of 5.79.  The Moringa seed oil extract peel-off gel mask has the attributes of being white, thick, and smelling like moringa seeds. The peel-off gel mask gets thicker the more Moringa seed oil extract there is in it. This study establishes the potential of using Moringa seed oil extract in peel-off gel mask formulations extract in peel-off gel mask formulations.
Co-Authors Adityo Sawong Seto Akmal Imam Faisal Anresansia Winesha Pandit Anwar Ilmar Ramadhan Apud Mahpudin Athiek Sri Redjeki Azmairit Aziz Azmi, Wan Hamzah Danang Ali Deni Almanda Djoko Hadi Prajitno Efrizon Umar Efrizon Umar Efrizon Umar Eko Setiawan Erba Vidya Cikta Erdawati Erdawati Erdawati Erdawati Erdawati Erdawati Erdawati Erdawati Ery Diniardi Faisal, Akmal Imam Fatma Sari Fikriyansyah Fikriyansyah Fikriyansyah, Fikriyansyah Firmansyah Firmansyah Firmansyah Firmansyah Hadi Hidayat Hasan Basri Heni Suryarachma Heryanti Heryanti Hitmi Rizawaldi Ibnu Wahyudin Ika Kurniaty, Ika Irfan Purnawan Purnawan Istianto Budhi Rahardja Kiki Rizky Ananda Kushendarsyah Saptaji Muhammad Dadi Saputra Mutiara Salsabila Novia Okny Yulianti Nurul Hidayati Fithriyah Putri, Dirga Aulia Eka Rahardja, Istianto Budhi Rahmawati Suryani Ratri Ariatmi Nugrahani Rian Fitriana Semendo, Rifqi Putra Setiawan, Hanif Rama Yuda Sulis Yulianto Suratmin Utomo Susanty Susanty Syahrul Ramadhanur Syamsudin AB Syamsudin Abdullah Tri Yuni Hendrawati Yosan Yoga Permana Yudistirani, Sri Anastasia