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All Journal Jurnal Pengembangan Kota Journal of Engineering and Technological Sciences The Indonesian Journal of Planning and Development
Suprihanto Notodarmojo
Department of Environmental Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science Social Sciences

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Synthesis of TiO2 Nanofiber-Nanoparticle Composite Catalyst and Its Photocatalytic Decolorization Performance of Reactive Black 5 Dye from Aqueous Solution Suprihanto Notodarmojo; Doni Sugiyana; Marisa Handajani; Edwan Kardena; Amanda Larasati
Journal of Engineering and Technological Sciences Vol. 49 No. 3 (2017)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2017.49.3.4

Abstract

In this study, synthesis of TiO2 nanofiber-nanoparticle composite photocatalyst was carried out and its photocatalytic decolorization performance was investigated. TiO2 nanofibers were developed by electrospinning. The TiO2 nanoparticle films were prepared by dipping the glass substrates into a sol solution made by sol-gel method. The TiO2 nanofiber-nanoparticle composite was immobilized on glass plates and annealed at 500 °C. The effects of pH and catalyst loading were studied during a photocatalytic decolorization experiment using simulated dyeing wastewater containing Reactive Black 5 (RB5). The photocatalytic decolorization performance with 60 min of UV-irradiation time using the TiO2 nanofiber-nanoparticle composite was found to be higher (94.4%) than that of the TiO2 nanofibers (75.5%) and the TiO2 nanoparticle catalyst (74.1%). An alkaline condition and high catalyst loading were found to be preferable to achieve optimum photocatalytic decolorization of Reactive Black 5 (RB5). The TiO2 nanofiber-nanoparticle composite could be recovered after reusing multiple times through re-annealing at a high temperature. TiO2 nanofibers based on a composite catalyst that is strongly immobilized on glass plates enlarges the prospect of the photocatalytic method as a compact, practical and effective advanced treatment process for effluents from textile wastewater.
Decision Analysis of Alternative River Debris to Landfill Transportation Systems in Jakarta Mega Mutiara Sari; Takanobu Inoue; Regil Kentaurus Harryes; Shigeru Kato; Iva Yenis Septiariva; Sapta Suhardono; Suprihanto Notodarmojo; Kevin Foggy Delu; I Wayan Koko Suryawan
The Indonesian Journal of Planning and Development Vol 7, No 1 (2022): February 2022 (Article in Progress)
Publisher : Department of Urban and Regional Planning, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijpd.7.1.%p

Abstract

River debris in Jakarta is generated in several locations by conventional transportation. Waste transportation with traditional models is usually not time-efficient, primarily when river debris is generated every time. Transport systems that can be used for river debris include compactor systems, pre-compactor systems, and baller systems. This research uses literature study and secondary data in determining alternatives. Meanwhile, the alternative selection was carried out using the Multi-Criteria Decision Making (MCDM) method. This study uses four criteria for selecting alternatives: initial capital, type of transport container, operation and maintenance, and processing capability. The utility value of waste transportation with compaction and pre-compacting systems does not significantly have utility values of 0.722 and 0.833, respectively. At the same time, the baller system has a utility value of 0.222. This shows that the compacted system is more suitable to be applied to SPA river debris in Jakarta. The presence of a pr-compactor can also reduce the water content in-river debris.
RIVER DEBRIS TRANSPORT PLANNING FROM SOURCE TO PUTRI CAMPO FINAL PROCESSING PLACE, SURAKARTA CITY Mega Mutiara Sari; Takanobu Inoue; Regil Kentaurus Harryes; Kuriko Yokota; Iva Yenis Septiariva; Sapta Suhardono; Shigeru Kato; Suprihanto Notodarmojo; Aninda Putri Nafisah; I Wayan Koko Suryawan
Jurnal Pengembangan Kota Vol 10, No 2: Desember 2022
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpk.10.2.118-126

Abstract

The waste from the river is one of the obstacles in managing the Bengawan Solo River, Surakarta City. River debris is usually collected in tributaries so as not to carry the pollutant load to the watershed, causing flooding, and then transported to the Final Processing Site (TPA). This study aims to analyze the waste transportation system from the source to the landfill. This research was conducted by direct observation and using Multi-Attribute Utility Theory (MAUT) for determination. Alternative waste transportation used are haul container system (HCS) and stationary container system (SCS). The criteria used are the number of ritations, price, ease of transportation, potential damage, maintenance, and type of container. Based on the weighting results on the MAUT analysis, transportation with the SCS method has a higher weight than the HCS method.
Co-Authors Amanda Larasati Aninda Putri Nafisah Doni Sugiyana Edwan Kardena Harryes, Regil Kentaurus I Wayan Koko Suryawan Iva Yenis Septiariva Kevin Foggy Delu Kuriko Yokota Marisa Handajani Mega Mutiara Sari Mega Mutiara Sari Sapta Suhardono Shigeru Kato Suryawan, I Wayan Koko Takanobu Inoue Takanobu Inoue