https://jurnal.unitri.ac.id/index.php/rekabuana/issue/feedReka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia2024-03-06T11:01:07+07:00Ayu Chandra Kartika Fitrirekabuana@unitri.ac.idOpen Journal SystemsJurnal Ilmiah Teknik Sipil dan Teknik Kimiahttps://jurnal.unitri.ac.id/index.php/rekabuana/article/view/5171Preparation and Characteristics of Kluwak Shell Carbon Adsorbent2024-03-05T17:16:54+07:00Yuliani HRyulihr207@gmail.comDian Rangginayulihr207@gmail.comMiftahul Jannayulihr207@gmail.comZulham Nurul Fadhilayulihr207@gmail.comArif Budimanyulihr207@gmail.com<p>Kluwak shell carbon (KTK) is a biomass with potential as an adsorbent, containing cellulose, hemicellulose, lignin, and fixed carbon at a content of 92.15%. However, the current utilization of KTK in adsorbing free fatty acids and methylene blue is limited and can be improved through thermal activation at a range of temperatures. The study aims to investigate the impact of activation temperature on CEC by examining the adsorption capacity of methylene blue solution, iodine solution, and surface area. Activation was carried out for 2 hours at temperatures ranging from 500 to 900 C on Kluwak shell carbon. The adsorbent performance of the activated KTKAT was initially tested using methylene solution with a concentration of 50 ppm, a volume of 50 ml, and 0.15 grams of KTKAT. The solution was placed in an orbit shaker for 90 minutes and filtered. The absorbance of the filtrate adsorption results was measured at a wavelength of 662 nm using UV VIS. For the second test, 50 ml of 0.1 N Iodine and 0.5 g KTKAT were stirred for 15 minutes and then centrifuged for approximately 15 minutes. A volume of 10 ml of the resulting iodine solution adsorption filtrate was titrated with 0.1 N Sodium Thiosulfate. The surface area was determined using the BET method. The concentration (ppm) of methylene blue solution was determined by converting the absorbance measurement using the standard curve equation. The iodine number was determined by titrating the iodine adsorption filtrate with sodium thiosulfate (ml). These data show that there is an obvious correlation between activation temperature and methylene blue absorbance, iodine number, and surface area. At 800°C, the methylene blue adsorption is 12.41 mg/g, the iodine number is 875.61 mg/g, and the surface area is 561.404 m²/g.</p>2024-03-05T17:16:54+07:00Copyright (c) 2024 HR Yulianihttps://jurnal.unitri.ac.id/index.php/rekabuana/article/view/5650Traffic Performance Optimization at Batanghari Intersection Using Microsimulation2024-03-06T11:01:07+07:00Kenny Ghalibkennyghalib@gmail.comYossyafra Yossyafrakennyghalib@gmail.comPurnawan Purnawankennyghalib@gmail.com<p>The Batanghari 1 Bridge serves as a vital link connecting Jambi City and Muaro Jambi Regency. Currently, the traffic density at the Batanghari intersection is notably high, particularly during peak hours, resulting in frequent traffic jams. To address this issue, the Perencanaan dan Pengawasan Jalan Nasional (P2JN) and Planning Consultants executed a Detailed Engineering Design (DED) Planning for the Duplication of the Batanghari 1 Bridge in 2021. The Duplication DED transformed the original intersection into a combination of an intersection and a U-turn. However, a notable challenge emerged during rush hours, especially for Jalan KH.A. Majid, where a U-turn is essential to cross the Batanghari Bridge. In this study, a traffic microsimulation was initiated at the Batanghari intersection. Using PTV Vissim software, microsimulations were conducted under three scenarios: Existing Condition, Detailed Engineering Design (DED), and an Alternative scenario, which involved incorporating a Flyover for KH.A. Majid Road towards Batanghari Bridge. Furthermore, traffic microsimulations were conducted to anticipate conditions over the next two decades. The analysis involved microsimulation using Vissim software, encompassing calibration, trial and error validation of the intersection model considering driver behavior, and GEH tests on traffic volume. The microsimulation results at the Batanghari intersection revealed that the alternative model effectively reduced queues, minimized delay times, and improved overall travel time compared to the proposed model.</p>2024-03-05T17:16:54+07:00Copyright (c) 2024 Kenny Ghalib