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All Journal Jurnal Ilmu Dasar POSITRON Indonesian Journal of Spatial Planning
Rofi’i, Imam
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Control & Systems Engineering Energy Engineering Mathematics Physics

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One Step Synthesis of TiO2-Activated Carbon Composite Using Hydrothermal Method with Mass Variation of Activated Carbon Sutisna, Sutisna; Rokhmawati, Ilma Eka Nur; Misto, Misto; Rofi’i, Imam; Mulyono, Tri; Siswanto, Siswanto; Supriyanto, Edy; Wibowo, Edy
POSITRON Vol 13, No 1 (2023): Vol. 13 No. 1 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v13i1.59856

Abstract

One effort to increase the photocatalytic activity of TiO2 is to immobilize it on the surface of the sorbent material. This study aims to produce TiO2-Activated Carbon (TiO2-AC) composites which have higher photocatalytic activity than TiO2, using a simple method. The synthesis of TiO2-AC  composites was carried out using the hydrothermal method. The synthesis process was initiated by mixing TTIP, ethanol, H2O, and activated carbon with various masses (5 g, 10 g, 15 g, and 20 g). The mixture was then put into a hydrothermal autoclave and heated at 180°C for 12 hours. The material is then washed until the pH is neutral, and then dried. The TiO2-AC composite powder was then calcined at 500°C for 3 hours. Based on the photocatalytic test of the TiO2-AC composite on the degradation of methylene blue compounds, it was shown that composite with a mass variation of 10 g activated carbon (TiO2-AC/10) had the highest photocatalytic activity. FTIR characterization of the sample TiO2-AC/10 showed a shift in the peak wave number of the hydroxyl and carbon groups. Meanwhile, the results of morphological analysis using SEM showed that TiO2 particles had adhered to the AC surface, which was also confirmed by EDX data in the presence of Ti and O elements in the synthesized material. The results of the crystallinity analysis showed that the 100% synthesized TiO2 was the anatase phase with a crystalline size of 1.80−14.14 nm. This study open up opportunities for the development of TiO2-based composite materials for large-scale environmental remediation applications.
REVIEW PENETAPAN KAWASAN INDUSTRI DI KABUPATEN JEPARA Tamara, Anindya Putri; Rofi’I, Imam; Sudrajat, Agus Sarwo Edy
Indonesian Journal of Spatial Planning Vol. 4 No. 2 (2023): VOLUME 4 NOMOR 2 OKTOBER 2023
Publisher : Program Studi Perencanaan Wilayah dan Kota, Fakultas Teknik, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/ijsp.v4i2.7359

Abstract

Pengembangan Kawasan Industri bertujuan untuk mengatasi berbagai permasalahan seperti: masih lemahnya daya saing industri nasional, belum kuat dan belum dalamnya struktural industri nasional masih terkonsentrasinya kegiatan industri di beberapa titik Pulau Jawa dan belum optimalnya regulasi pemerintah dalam mendukung kemajuan sektor industri. Penetapan Kawasan Industri di Kabupaten Jepara sangat diperlukan untuk dapat mengelompokkan kegiatan industri pada satu lokasi pengelolaan. Kawasan Industri terpadu dapat memberikan kemudahan dalam aspek penyediaan fasilitas pendukung industri baik untuk pengolahan dan juga pengendalian kegiatan industri termasuk pengelolaan limbah di dalamnya. Pertumbuhan industri secara individual memberikan pengaruh besar terhadap kelestarian lingkungan karena tidak mudah untuk melakukan pengendalian pencemaran yang dilakukan oleh industri-industri yang tumbuh secara individu. Penetapan Kawasan Industri di Kabupaten Jepara diharapkan dapat mendukung terbentuknya tata ruang yang berkelanjutan serta peningkatan kualitas lingkungan daerah secara menyeluruh.
The Application of Cows Rumen for Electricity Generation Through The Implementation of A Ceramic-Based Microbial Fuel Cell System Mulyono, Tri; Hutamia, Diah Meirendi; Rofi’i, Imam; Misto, M.; Nugroho, Agung Tjahjo; Hariadi, Yuda Cahyoargo
Jurnal ILMU DASAR Vol 25 No 1 (2024)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v25i1.44448

Abstract

The growth in population is not adequately matched by the corresponding increase in energy demand. The imperative for prioritizing the exploration of alternative energy sources that possess attributes of safety, affordability, and ample access to raw materials cannot be overstated. An energy source with significant potential is a microbial fuel cell (MFC)-based energy source. This study aims to investigate the utilization of cow rumen as a substrate and source of nutrition in the bioenergy system of microbial fuel cells (MFCs). The present study aims to investigate the impact of substrate concentration and bacterial incubation duration derived from bovine rumen bacteria on the attainment of optimal power density. The research employed a Dual Chamber Microbial Fuel Cell (MFC) device using a Proton Exchange Membrane (PEM) constructed from ceramic materials. Daily observations were conducted over a period of 30 days. The performance of MFC was assessed utilizing the polarization technique. The findings indicated that altering the proportion of bovine rumen bacterial substrates and the duration of bacterial incubation had an impact on the power density seen in the Microbial Fuel Cell (MFC) system. The optimal conditions were attained when the substrate concentration reached 3640 ppm and after 7 days, resulting in a maximum power density of 864 mW/m2.
Co-Authors Agung Tjahjo Nugroho Edy Supriyanto Edy Wibowo Hutamia, Diah Meirendi Misto Misto Misto, M. Rokhmawati, Ilma Eka Nur S Siswanto Sudrajat, Agus Sarwo Edy Sutisna Sutisna Tamara, Anindya Putri Tri Mulyono Yuda Cahyoargo Hariadi