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All Journal Reaktor Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Ilmu Lingkungan IPTEK Journal of Proceedings Series Jurnal Bahan Alam Terbarukan Jurnal Pengembangan Kota Journal of Regional and City Planning Journal of Mathematical and Fundamental Sciences Journal of Engineering and Technological Sciences The Indonesian Journal of Planning and Development Jurnal Ilmiah Arena Tekstil Info-Teknik Jukung (Jurnal Teknik Lingkungan) Jurnal Ilmiah Matrik IJEMS (Indonesian Journal of Environmental Management and Sustainability) Jurnal Teknik Lingkungan Journal of Environmental Science and Sustainable Development Indonesian Journal of Social and Environmental Issues (IJSEI) AKSELERASI: Jurnal Ilmiah Nasional Makara Journal of Science Makara Journal of Technology INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Jurnal Manusia dan Lingkungan Jurnal Teknologi Lingkungan
Suprihanto Notodarmojo
Program Studi Teknik Lingkungan, Institut Teknologi Bandung Jalan Ganesa 10, Bandung 40132
Agriculture, Biological Sciences & Forestry Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation

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Journal : Makara Journal of Technology

 1 
The Effects of Influent Debit on Hydrodynamic Characteristic of Bojongsoang Facultative Pond: Without Wind Effects Hadisoebroto, Rositayanti; Notodarmojo, Suprihanto
Makara Journal of Technology Vol. 8, No. 3
Publisher : UI Scholars Hub

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The Effects of Influent Debit on Hydrodynamic Characteristic of Bojongsoang Facultative Pond: Without Wind Effects. The performance of facultative pond in Bojongsoang WWTP have reported to be unstable. One of the cause of the unstable performance is the hydrodynamic characteristics that not met the criterion. The improper hydrodynamic characteristics are included the existence of dead-zone, the short-circuiting, and the turbulence due to eddy current. The study was to analyze the effect of the influent debit variation on the hydrodynamic characteristics of the pond using mathematical model. The two-dimensional hydrodynamic model was built from two hydrodynamic equations which are continuity and momentum equations. The equations were solved by finite-difference numerical method of semi-implicit (Crank-Nicolson). From the simulation results, the Froude number of the water flow was analyzed. Beside that, the effective residence time and the effective area were calculated. All of them were done to analyzed the existence of the dead-zone in the pond. The simulation results show that the dead-zone was exist in the center of the pond. when the influent debit was larger, the effective residence time and the effective area become larger. The distribution of the Froude number value shows that the area with the value of 10-10 become reduced in the larger influent debit. The existence of the dead-zone was reduced since the influent debit become larger. It can be said that the larger influent debit can improve the hydrodynamic characteristics of the pond.
Effect of Catholyte Concentration on Current Production During Chocolate Industry Wastewater Treatment by a Microbial Fuel Cell Wulan, Diana Rahayuning; Notodarmojo, Suprihanto
Makara Journal of Technology Vol. 24, No. 2
Publisher : UI Scholars Hub

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Microbial fuel cells (MFCs) use bacteria as a catalyst to oxidize organic and/or inorganic substrates and produce electric currents. Wastewater could function as an electron donor in the anode chamber and, thus, represents a very promising energy source. Catholytes, as electron acceptors, influence power production in MFCs by increasing the availability of electrons. The present research aims to determine the influence of catholyte concentration on current production in an aerobic two-chamber MFC. Aerobic treatment was carried out in the two-chamber MFC operated in an incubator at 37  1 °C with and without aeration in the cathode chamber. Wastewater from the chocolate industry was used as a substrate and oxidized by using a bacterial consortium isolated from the sludge wastewater itself. The catholytes used were 0.01, 0.05, 0.1, and 0.3 N NaCl. In the presence of NaCl, the chemical oxygen demand (COD) removal efficiency in the cathode chamber of the MFC was approximately 65%–83% without aeration and 76%–89% with aeration after 72 hours. The current density increased as the catholyte concentration increased to 0.05 N, after which the oxidation process shifted from the anode chamber to the cathode chamber. Addition of O2 to the cathode chamber influenced current production.
Co-Authors A. Aruan, Indah Adi Mulyana Supriatna Afifah, Nuha Amiratul Amanda Larasati Amanda Larasati Andita Rachmania Dwipayani Andriani Astuti Andriani, Tetty Anne Deniva Anne Juliah Apriliawati, Rizki Benny Chatib Chatib, Benny Cintya L. Radiman Cynthia Radiman Damanhuri, Enri Dame Alvina Naomi Sitohang Delu, Kevin Foggy Dini Mayasanthy Dini Mayasanthy Dion Awfa Dirgawati, Mila Djoko Cahyo Utomo Lieharyani Doni Sugiyana Doni Sugiyana Doni Sugiyana, Doni Dwina Roosmini Dwipayani, Andita Rachmania EDWAN KARDENA Eka Wardhani Eka Wardhani Enri Damanhuri Fatimah Juhra Fatimah Juhra Geerling, Gertjan W. Gilang Garnadi Suryadi Gustiani, Srie Harja, Yulianty Harryes, Regil Kentaurus Hendra Kurniawan I Wayan Koko Suryawan I Wayan Koko Suryawan Ika Bagus Priyambada Ika Bagus Priyambada Ira Rumiris Hutagalung Iva Yenis Septiariva Iva Yenis Septiariva Iva Yenis Septiariva Johan Budiman, Johan Juhra, Fatimah Kato, Shigeru Kevin Foggy Delu Kuriko Yokota Kuriko Yokota Kuriko Yokota Kurniawan, Hendra Larasati, Amanda Larasati, Amanda Lita Darmayanti M. Irsyad Machrunnisa Mahmud Mahmud Makhmudah, Nisaul Marisa Handajani Martin Darmasetiawan Maulana, Yusuf Eka Mega Mutiara Sari Mega Mutiara Sari Mega Mutiara Sari Mega Mutiara Sari Minda Nicelia Mindryani Syafila Mindryani Syafila Mohamad Rangga Sururi Muammar Qadafi Nafisah, Aninda Putri Naomi Sitohang, Dame Alvina Nicelia, Minda Nisaul Makhmudah Noviani Ima Wantoputri Nuha Amiratul Afifah Nurulbaiti Listyendah Zahra Nurulbaiti Listyendah Zahra, Nurulbaiti Listyendah Pertiwi, Yunita Prama Setia Putra Prayatni Soewondo Prayatni Soewondo Putra, Prama Setia Qomarudin Helmy Qomarudin Helmy, Qomarudin Radiman, Cynthia Ragas, Ad M.J. Rahajeng Hasna Safira Rahayu, Mayang Manguri Riana Ayu Kusumadewi Riska Pratiwi Rohmatun Rohmatun Rositayanti Hadisoebroto Salami, Indah R. S. Sapta Suhardono Sapta Suhardono Sari, Mega Mutiara Septiariva, Iva Yenis Septiariva, Yenis Shigeru Kato Shigeru Kato Soenoko, Bambang Sofiyah, Evi Siti Sri Maryati Sri Maryati Srie Gustiani Stacia Dea Prameswari Sugiyana Doni Sugiyana Doni, Sugiyana Sugiyana, Doni Suhardono, Sapta Sundari, Santi Supriatna, Adi Mulyana Suryawan, I Wayan Koko Syafila, Mindryani T. Zulkarnain Takanobu Inoue Takanobu Inoue Takanobu Inoue Takanobu Inoue Teuku Zulkarnain Tri Padmi Utami, Rosetyati R. Wahyudianti, Rima Widiarto Widiarto Widiarto Widiarto, Widiarto Wisnu Prayogo Wulan, Diana Rahayuning Yulianty Harja Yuniati Zevi Yunita Pertiwi Yusuf Eka Maulana