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All Journal Jurnal Ilmu Dasar BERKALA SAINSTEK Jurnal Sains dan Teknologi Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran JFA (Jurnal Fisika dan Aplikasinya) UNEJ e-Proceeding Jurnal Fisika FLUX Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Pendidikan Fisika dan Keilmuan (JPFK) Spektra: Jurnal Fisika dan Aplikasinya Warta Pengabdian Jurnal Ilmu Fisika Indonesian Physical Review Computational and Experimental Research in Materials and Renewable Energy (CERiMRE) Dedikasi: Jurnal Pengabdian kepada Masyarakat JIFP (Jurnal Ilmu Fisika dan Pembelajarannya) Newton-Maxwell Journal of Physics Sewagati InSTEM Jurnal Sains Materi Indonesia Journal of Electronics and Instrumentation
Wenny Maulina
Jurusan Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Jember
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Influence of Hydrothermal Temperature on the Physical Characteristics and Photocatalytics Activity of TiO2 for Degradation of Amoxicillin Sutisna, Sutisna; Maulana, Rija Rizqi; Maulina, Wenny; Sujito, Sujito; Berlianti, Nindha Ayu; Wibowo, Edy
Jurnal Sains Materi Indonesia Vol. 26 No. 1 (2024): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2024.2051

Abstract

Titanium dioxide (TiO2) is a photocatalyst material widely used for environmental remediation applications. In this research, TiO2 material was synthesized using the hydrothermal method at various temperatures (150°C, 180°C, and 200°C). Based on the Fourier-transform infrared (FTIR) data, it was found that all the synthesized materials showed similar absorption peaks, and Ti-O-Ti bonds were detected, which is a characteristic of TiO2. X-ray diffraction (XRD) analysis showed that all the synthesized materials were TiO2 anatase with different crystalline sizes. The synthesized TiO2 using the hydrothermal temperature of 180°C showed the smallest crystalline size of 86.81 nm. Based on the analysis of the band gap energy, it was found that wider band gap energy was obtained at higher hydrothermal temperatures. The band gap energies of the synthesized materials are 3.18 eV, 3.19 eV, and 3.21 eV for hydrothermal temperatures of 150°C, 180°C, and 200°C, respectively. The photocatalytic activity of the three synthesized materials was tested in the photodegradation experiment of amoxicillin under ultraviolet (UV) irradiation. As a result, it was found that TiO2 synthesized at 180°C has the highest photocatalytic activity by degrading 100% of amoxicillin compounds within 120 minutes.
Kajian Sifat Fisik Putih dan Kuning Telur Bebek Selama Penyimpanan Pada Temperatur Berbeda Fanta, Ryo; Wenny Maulina; Tjahjo Nugroho, Agung; Arkundato, Artoto; Ayu Berlianti, Nindha
Journal of Electronics and Instrumentation Vol. 1 No. 1 (2023)
Publisher : Fakultas MIPA, Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jei.v1i1.700

Abstract

Telur bebek merupakan salah satu jenis telur yang banyak dikonsumsi di Indonesia, setelah telur ayam. Karakteristik telur termasuk telur bebek akan mengalami perubahan selama proses penyimpanan. Telur bebek memiliki sifat fisik yang mudah rusak. Cangkang telur bebek memiliki jumlah pori-pori lebih banyak dibandingkan telur ayam sehingga berpeluang lebih besar terkontaminasi bakteri. Tujuan dari penelitian ini yaitu mengkaji sifat fisik telur bebek selama penyimpanan pada temperatur ruang dan rendah. Karakteristik dari sifat fisik telur bebek yang diukur meliputi weight loss, kerapatan, pH albumen, pH kuning telur, Haugh Unit, dan indeks kuning telur. Hasil penelitian menunjukkan bahwa lama penyimpanan pada temperatur berbeda memiliki dampak pada perubahan sifat fisik telur bebek. Telur bebek yang disimpan pada temperatur ruang mengalami peningkatan weight loss, pH albumen dan pH kuning telur. Sedangkan kerapatan, Haugh Unit, dan indeks kuning telur mengalami penurunan pada temperatur ruang. Sebaliknya telur bebek yang disimpan pada lemari es (8 ℃) menghasilkan weight loss dan pH albumen yang menurun, sedangkan kerapatan, pH kuning telur, Haugh Unit, dan indeks kuning telur mengalami peningkatan.
Heavy Metal Toxicity of Pb in the Organs of Nile Tilapia (Oreochromis Niloticus) in the Watershed Due to Hospital Waste Nindha Ayu Berlianti; Yuda Cahyoargo Hariadi; Arry Yuariatun Nurhayati; Wenny Maulina; Firda Fadri
JST (Jurnal Sains dan Teknologi) Vol. 13 No. 3 (2024): Oktober
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v13i3.84865

Abstract

The toxicity levels of heavy metals accumulated in water and sediment due to hospital waste discharge not only impact the environment but also pose a significant threat to human health. Long-term accumulation of these metals in the body may lead to degenerative diseases such as cancer. This concern highlights the urgency of conducting laboratory-based experimental research to identify the distribution of heavy metals in aquatic environments caused by hospital waste. The study employs Nile tilapia (Oreochromis Niloticus) as a bioindicator, a species capable of absorbing metals through its tissues. The research subjects consisted of 35 Nile tilapia with a body length of 8–12 cm and a weight of 12–15 grams, alongside hospital waste samples collected from three discharge points. Data collection methods included sample preparation of both hospital waste and Nile tilapia, treatment with varying concentrations of lead nitrate (Pb(NO3)2), and maintenance durations of 7, 14, 21, and 28 days. The concentration of Pb in the gills and muscle tissue of the fish was measured using Atomic Absorption Spectroscopy (AAS). The analytical data, represented as heavy metal concentrations, were plotted on a graph showing the relationship between concentration variations and maintenance durations and analyzed using One-Way ANOVA with nonparametric Tukey's test. The analysis revealed that the highest Pb concentration was observed in the gills of Nile tilapia on day 28 at 1.57 ppm, while the Pb concentration in muscle tissue reached 0.25 ppm on day 21. According to BPOM standards, Pb levels in Nile tilapia muscle tissue remain within the safe consumption threshold (≤0.3 ppm), whereas Pb levels in the gills exceeded the tolerance limit. This study provides scientific evidence on the risks of heavy metal accumulation in aquatic biota due to hospital waste and underscores the importance of improved waste management practices to safeguard public health and the environment.
OPTIMIZING THE CARBONIZATION TEMPERATURE OF WATER HYACINTH BIOCHAR BY PROXIMATE ANALYSIS USING RESPONSE SURFACE METHODOLOGY Maulina, Wenny; Habibah, Putri Sifa; Arkundato, Artoto; Syarifah, Ratna Dewi; Sulistiyo, Yudi Aris; Sukmawati, Nissa
Indonesian Physical Review Vol. 8 No. 1 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i1.405

Abstract

Water hyacinth is a locally available biomass with the potential to be converted into biochar, serving as a renewable energy source. In this report, response surface methodology (RSM) was employed to optimize the carbonization temperature during the preparation of water hyacinth biochar. Water hyacinth was carbonized in a furnace at varied temperatures (400 °C, 500 °C, 600 °C) for 90 minutes. Characterization of the biochar derived from water hyacinth by proximate analysis was determined, including moisture content, ash content, volatile matter, fixed carbon, and calorific value. The results of the biochar before optimization indicated that moisture content and volatile matter decreased with increasing carbonization temperature, while ash content, fixed carbon, and calorific value increased. After optimization, the proximate analysis of the biochar was determined, with the optimal carbonization temperature found to be 533.54 °C. At this temperature, the optimal moisture content was 6.50%, ash content was 25.53%, volatile matter was 24.80%, and fixed carbon was 43,16%. These findings demonstrate the feasibility of using RSM to optimize the preparation conditions of water hyacinth biochar.
Validasi Kode OpenMC pada Reaktor Gas Berpendingin Helium Berbahan Bakar UC-PuC Karomah, Iklimatul; Syarifah, Ratna Dewi; Trianti, Nuri; Arkundato, Artoto; Rohman, Lutfi; Maulina, Wenny; Purwandari, Endhah; Hidayat, Umar Sahiful
Newton-Maxwell Journal of Physics Vol. 4 No. 1: April 2023
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/nmj.v4i1.26998

Abstract

Validasi perhitungan kekritisan pada Gas Cooled Fast Reactor (GFR) menggunakan kode OpenMC dan SRAC telah dilakukan. OpenMC merupakan kode analisis neutronik yang bersifat open source dan probabilistik yang sedang dikembangkan oleh MIT hingga sekarang. Validasi kode OpenMC perlu dilakukan untuk menunjukkan hasil validitas perhitungan OpenMC dibandingkan dengan kode lainnya. OpenMC yang bersifat probabilistik, mensimulasikan random sampling partikel yang berjumlah besar. Hal terseut bertujuan untuk menunjukkan akurasi perhitungan OpenMC dengan menggunakan partikel yang berjumlah kecil. Validasi dilakukan dengan melihat selisih perhitungan nilai  dari kode OpenMC dan SRAC. Nilai konvergensi yang dihasilkan dari kode OpenMC dan SRAC dikatakan tervalidasi dengan memiliki nilai error <1%. Pada penelitian ini menggunakan 50.000 partikel dengan total pengulangan 100 batch aktif dan 30 batch tidak aktif yang disimulasikan. Hasil perbandingan menunjukkan bahwa OpenMC memiliki error maksimal 0,06% terhadap hasil perhitungan kode SRAC
Thermal Conductivity of Liquid Lead for the Fast Nuclear Reactor Coolant, Calculated by the Green-Kubo Method Using Molecular Dynamics Simulation Artoto Arkundato; Ratna Dewi Syarifah; Lutfi Rohman; Wenny Maulina; Widiasih
Jurnal Penelitian Pendidikan IPA Vol 9 No 12 (2023): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i12.6102

Abstract

Comprehensive information about nuclear reactor coolant materials for application in heat-transfer systems is very important. One important physical property that needs to be known is the thermal conductivity. The goal of this work is to predict the thermal conductivity value of the liquid lead, which is one of the important candidates for cooling materials for Gen-IV fast nuclear reactor designs. The thermal conductivity of liquid lead in this study was predicted using the Green-Kubo scheme and the molecular dynamics (MD) computational method to collect the simulation data. The MD simulation was done in the NVT ensemble, using the Lennard-Jones interaction potential. We observe the thermal conductivity of the liquid lead can be studied based on the diffusion physical process. The thermal conductivity of the liquid lead obtained from this research is λ = 0.0113T + 8.8539 [W/mK]. As a conclusion, this result is very suitable, compared with the available experimental data, then the Green-Kubo method can be used to calculate the thermal conductivity of liquid metal as lead.
Uji Aktivitas Antibakteri dan Permeabilitas Membran Hibrid Nilon-TiO2: Wenny Maulina, Binti Istikomatul Isrofiyah, dan Supriyadi Wenny Maulina Wenny Maulina; Binti Istikomatul Isrofiyah Binti Istikomatul Isrofiyah; Supriyadi Supriyadi
Jurnal Fisika dan Aplikasinya Vol 15 No 3 (2019): October 2019 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v15i3.4625

Abstract

Hybrid membranes from nylon and titanium dioxide (TiO2) were prepared using hydrogen chloride (HCl) as precursor and acetyl aceton as chelating agent in the casting solution by phase inversion methods. The aim of this study was investigated antibacterial effect and permeation flux due to the impact of TiO2 contents on the hybrid membranes. Among all the prepared membranes, nylon-TiO2 hybrid membranes with mass fraction 70%:30%exhibited the best antibacterial effect. Meanwhile, the additions of TiO2 were raised water and sodium chloride (NaCl) permeability from 0 to 40%.
Effectiveness of Nylon Membrane in Improving the Quality of Hospital Wastewater Based on COD and Ammonia Parameters Eka Yulia Salsabiilah; Nindha Ayu Berlianti Nindha; Wenny Maulina
JST (Jurnal Sains dan Teknologi) Vol. 15 No. 1 (2026): April
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jst-undiksha.v15i1.106639

Abstract

Hospital wastewater generally contains high levels of organic compounds and nitrogen, with COD and ammonia values exceeding environmental quality standards. Conventional treatment methods are often suboptimal, requiring efficient and stable alternative technologies. This study aims to analyze and evaluate the effects of variations in nylon mass fraction on the performance of ultrafiltration membranes, including swelling degree, flux, and rejection capacity for reducing COD and ammonia. This study is a laboratory experiment using a membrane mass-fraction variation design. The study included five types of nylon membranes (A–E) that were tested using hospital wastewater samples. The membranes were synthesized by the phase inversion method, and performance testing was conducted via ultrafiltration, swelling measurements, permeate flux, and analyses of COD and ammonia. Data were analyzed descriptively and quantitatively using rejection coefficients and operational stability values. The results showed that increasing the nylon mass fraction decreased the degree of swelling and flux, but increased rejection up to optimum conditions. Membrane D showed the best performance in reducing COD and ammonia and had better stability. These findings indicate that optimizing the nylon mass fraction could improve the effectiveness of membrane-based treatment of hospital wastewater.
Co-Authors Agung Tjahjo Nugroho Ainayya Halifah Arry Y. Nurhayati Arry Y. Nurhayati, Arry Y. Arry Yuariatun Nurhayati Artoto Arkundato Binti Istikomatul Isrofiyah Binti Istikomatul Isrofiyah Edy Wibowo Eka Yulia Salsabiilah Endhah Purwandari Fajri Prasetya Fanta, Ryo Firda Fadri Gaguk Jatisukamto Ghiffari, Mochammad Habibah, Putri Sifa Helda Wika Amini Hidayat, Umar Sahiful Ismia Khilmi Fauzia Jamaluddin, J. Karomah, Iklimatul Kusumaningtyas, Rani Lutfi Rohman Ma'rifah, Binti Ni'matul Maulana, Rija Rizqi Meirita Dwi Afriani Misto Misto Misto Mohammad Ali Shafii Nindha Ayu Berlianti Prasetyani, Tiana Febrianti Eka Priyanto, Frendi Wahyudi Rija Rizqi Maulana S. Sujito Setiawan, Dimas Arif Shofa, Ghaitsa Zhahira Sholihah, Athaya Farras Sujito Sujito Sukmawati, Nissa Supriyadi Supriyadi Supriyadi Supriyadi Sutisna Sutisna Sutisna Sutisna Syah, Khalif Ardian Syaifullah, Rangga Yudha Syarifah, Ratna Dewi Totok Wicaksono Trianti, Nuri Widiasih Wika Amini, Helda Yuda Cahyoargo Hariadi Yudi Aris Sulisitiyo