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All Journal Jurnal Ilmu Dasar BERKALA SAINSTEK 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 Newton-Maxwell Journal of Physics Sewagati Jurnal Sains Materi Indonesia
Wenny Maulina, Wenny
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; Rija Rizqi Maulana; Wenny Maulina; Sujito Sujito; Nindha Ayu Berlianti; Edy Wibowo
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.
Pemanfatan Teknologi Trash Can-Composter (TCC) Berbasis Zero Waste dalam Pengolahan Sampah Organik Penghasil Kompos Amini, Helda Wika; Syarifah, Ratna Dewi; Maulina, Wenny; Shofa, Ghaitsa Zhahira; Sholihah, Athaya Farras; Prasetyani, Tiana Febrianti Eka; Ma'rifah, Binti Ni'matul
Sewagati Vol 8 No 1 (2024)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v8i1.821

Abstract

Desa Tanah Wulan menjadi sasaran dalam menerapkan gagasan terletak di Kecamatan Maesan, Kabupaten Bondowoso, Provinsi Jawa Timur. Ketertarikan dalam menerapkan gagasan ini karena faktor dari Desa Tanah Wulan tidak memiliki fasilitas tempat pembuangan akhir (TPA), tempat pembuangan sampah (TPS), bahkan sebagian penduduk yang tidak memiliki tempat sampah memadai di rumah karena tingkat ekonomi dan kesejahteraan yang masih rendah. Permasalahan tersebut memicu penduduk membuang sampah rumah tangga ke lahan kosong, sungai, dan dibakar. Selain itu, penduduk dengan mayoritas mata pencarian sebagai petani, ketika musim panen penduduk serempak membuang sampah jerami dengan cara dibakar. Penduduk belum menyadari manfaat sampah organik. Melihat permasalahan Desa Tanah Wulan, dibuatlah alat yang mendukung agar digunakan oleh para penduduk dalam membuat pupuk kompos organik. Kegiatan pengabdian meliputi (1) kaderisasi ibu rumah tangga; (2) sosialisasi manajemen sampah, (3) sosialisasi cara pembuatan pupuk kompos dan praktek penggunaan alat TCC, (4) evaluasi. Hasil pengabdian ini adalah adanya 13 ibu rumah tangga yang bergabung pada program ini sebagai sebagai kader peduli lingkungan yang diketuai oleh Ibu Asnawati. Selanjutnya ibu-ibu telah memahami cara pemilahan sampah dan mampu memanfaatkan sampah organik menjadi kompos dengan bantuan alat Trash Can Composter (TCC).
Penggunaan Trash Can-Composter (TCC) Untuk Pengolahan Sampah Organik Dan Penghasil Kompos Bagi Warga Desa Tanah Wulan, Bondowoso Wika Amini, Helda; Syarifah, Ratna Dewi; Maulina, Wenny; Shofa, Ghaitsa Zhahira; Sholihah, Athaya Farras; Prasetyani, Tiana Febrianti Eka; Ma'rifah, Binti Ni'matul; Setiawan, Dimas Arif; Syaifullah, Rangga Yudha
Dedikasi:Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 2 (2024): Jurnal Dedikasi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/dedikasi.v4i2.313

Abstract

Have been done for assistance in waste processing using a trash can-composter (TCC) machine and making compost provided to the residents of Tanah Wulan Village, Maesan District, Bondowoso. This service activity is carried out with the aim of providing education to the community regarding good waste management and recycling waste to be used as a compost planting medium. Through this service activity, the person running this program, called kader ibu-ibu rumah tangga (IRT), was formed in Tanah Wulan Village, chaired by Ibu Asnawati as the leader of the Waste Management. Waste from household waste and harvest residues, such as vegetable waste, straw and rice husks, is chopped using a TCC machine. The chopped results are mixed with cow dung, sawdust and EM4 starter to get useful compost. The content of the compost produced is tested and ready to be applied to plants.Keywords: Trash can-composter, organic waste, compost
Study of Dielectric and Adsorption Properties of Activated Carbon Prepared from Water Hyacinth using KOH as an Activating Agent Ghiffari, Mochammad; Maulina, Wenny; Nugroho, Agung Tjahjo
Computational And Experimental Research In Materials And Renewable Energy Vol 3 No 1 (2020): May
Publisher : Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/cerimre.v3i1.26417

Abstract

Activated carbon can be produced from the combustion of a materials containing carbon that has been activated using activator substances. In this paper, potassium hydroxide (KOH) was selected as an activating agent. The influence of KOH concentration was investigated to determine the dielectric and adsorption properties of activated carbon derived from water hyacinth. Drying water hyacinth was carbonize in the furnace at a temperature of 400°C followed by chemical activation with variation concentration of KOH solution that used are 25%, 30%, and 35% (w/v) respectively. The results show that the best activated carbon derived from water hyacinth was obtained using 35% (w/v) KOH solution as an activating agent with the dielectric constant is 4,04 while iodine number of 514,6 mg/g.
Characterization of Carbon Derived from Water Hyacinth as a Renewable Energy Sources Kusumaningtyas, Rani; Maulina, Wenny; Supriyadi, Supriyadi
Computational And Experimental Research In Materials And Renewable Energy Vol 1 No 1 (2018): November
Publisher : Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/cerimre.v1i1.19543

Abstract

An alternative renewable energy sources, such as biomass, can be produced using the combustion process inside the furnace. In this work, carbon derived from water hyacinth be produced through carbonization process. The carbonization of water hyacinth was carried out at different temperature i.e. 400°C, 500°C and 600°C and subsequently analyzed with the SEM-EDX to determine the microstructure and atomic percentage of present elements. While the FTIR analysis was conducted to qualitatively verify the surface functional groups of carbon. The results of SEM-EDX analysis showed that the pores began to form at a carbonization temperature of 600°C and carbon content increased with increased temperature of carbonization process. FTIR analysis results showed that the functional groups in the carbon derived from water hyacinth had an absorption pattern with OH, C-H, C-O, and C=C bonds.
Effects of Carbonization Temperature from Activated Carbon of Water Hyacinth on the Flux and Its Ability on Iron Removal Maulina, Wenny; Priyanto, Frendi Wahyudi; Arkundato, Artoto
Jurnal ILMU DASAR Vol 24 No 1 (2023)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v24i1.30710

Abstract

The synthesis of activated carbon derived from water hyacinth has been successfully carried out as an iron adsorbent in a laboratory-scale water filter design system. In this article, activated carbon derived from water hyacinth is made through a carbonization process at 400°C and 500°C with NaOH as an activating agent. This activated carbon derived from water hyacinth acts as a filter media for purifying well water by assessing the flux, pH and iron removal efficiency before and after filtration. The results showed that the use of activated carbon derived from water hyacinth with a carbonization temperature of 500°C resulted in a water flux value greater than the carbonization temperature of 400°C. The pH value showed no difference between the use of activated carbon derived from water hyacinth (at a carbonization temperature 400°C and 500°C) before and after the filtration process, which was 7.5. Meanwhile, the effectiveness of activated carbon derived from water hyacinth at a carbonization temperature of 500°C as a filtration medium is more optimal in reducing iron levels compared to the use of activated carbon at a carbonization temperature of 400°C with percentage efficiency up to 98.09%.
Rancang Bangun Indoor Positioning System berbasis Wireless Smartphone menggunakan Teknik Global Positioning System dengan Metode Absolut Jamaluddin, J.; Nugroho, Agung Tjahjo; Maulina, Wenny
BERKALA SAINSTEK Vol 7 No 1 (2019)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v7i1.9914

Abstract

Indoor Positioning System (IPS) merupakan teknologi informasi untuk menentukan posisi objek di dalam ruangan berbasis wireless smartphone. Perangkat yang digunakan dalam penelitian ini adalah empat unit smartphone, satu smartphone sebagai transmitter, dan tiga smartphone lainnya sebagai receiver. Tujuan penelitian ini adalah mendapatkan model dan tingkat akurasi dari IPS berbasis wireless smartphone menggunakan teknik Global Positioning System (GPS) dengan metode absolut. Penelitian ini dilakukan dengan membuat dua model IPS dan melakukan pengukuran intensitas sinyal Wi-Fi berdasarkan masing-masing model IPS yang telah dibuat untuk mendapatkan persamaan linier antara jarak dan intensitas sinyal Wi-Fi. Persamaan linier yang didapatkan dari model IPS digunakan untuk menentukan jarak antara receiver dan transmitter berdasarkan intensitas sinyal Wi-Fi yang terukur pada saat pengujian model, kemudian informasi jarak tersebut digunakan untuk menentukan posisi objek (transmitter). Hasil penelitian menunjukkan bahwa Model 1 IPS berbasis wireless smartphone mampu mengestimasi posisi dengan rata-rata tingkat kesalahan mencapai 4,46 m dan tingkat akurasinya mencapai 76,51%. Model 2 IPS mampu mengestimasi posisi dengan rata-rata tingkat kesalahan 9,68 m dengan tingkat akurasinya mencapai 49,03%. Berdsarakan hasil tersebut, dapat disimpulkan bahwa model 1 IPS memiliki tingkat akurasi yang lebih baik untuk mengestimasi posisi objek daripada model 2 IPS. Kata Kunci: Global positioning system (GPS), indoor positioning system (IPS), wireless smartphone.
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.
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
Co-Authors Agung Tjahjo Nugroho Arry Yuariatun Nurhayati Artoto Arkundato Edy Wibowo Endhah Purwandari 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 Misto Misto Misto Misto Mohammad Ali Shafii Nindha Ayu Berlianti Nindha Ayu Berlianti Prasetyani, Tiana Febrianti Eka Priyanto, Frendi Wahyudi Rija Rizqi Maulana Setiawan, Dimas Arif Shofa, Ghaitsa Zhahira Sholihah, Athaya Farras Sujito Sujito Sujito Sujito Sukmawati, Nissa 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 Sulistiyo, Yudi Aris