UTILIZATION OF AGED WASTE AT SARIMUKTI LANDFILL (LANDFILL MINING) AS RAW MATERIAL FOR REFUSED DERIVED FUEL (RDF) WITH BIODRYING AS PRE-TREATMENT TECHNOLOGY

• Main Author: Laksmi Godwin, Alyaa
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/81322
• Institution: Institut Teknologi Bandung

The increasing volume of waste generation in the densely populated Bandung Raya area has surpassed the capacity of the Sarimukti Final Processing Site (TPA), making the identification of a new landfill location that meets regulatory standards a challenge. This research examines the feasibility of biodrying pre-treatment technology on aged waste from landfill mining as a strategic solution for reclaiming aged waste materials for energy recovery and land reuse. Biodrying is a processing technology that utilizes the activity of microorganisms in waste to produce heat energy, reducing moisture content and enhancing the calorific value of the waste. Landfill mining was conducted in Zone 1 of the Sarimukti TPA with an estimated waste age of more than seven years, which can be utilized as Refuse Derived Fuel (RDF), an alternative fuel leveraging the high calorific value of combustible waste. The optimal use of aged waste occurs when mixed with the addition of fresher waste. This study explores the optimal mixing ratio between aged waste and new waste entering the TPA, with mixing variations of 1:0, 1:1, 1:1.2, 1:2, and 0:1, to maximize RDF quality. The results of this biodrying experiment successfully reduced moisture content by 4.7% - 20.4% and increased calorific value by 8.2% - 53.8%. The most optimal biodrying variation was found at a ratio of aged waste to newly entered waste of 1:2 (Variation 4) with product characteristics of calorific value (LHV) 5820 kcal/kg, moisture content 23%, ash content 6.6%, volatile matter 70%, and fixed carbon 0.7%. Meanwhile, biodrying products that approach RDF fuel standards were found at ratios of aged waste to newly entered waste of 1:1.2 and 1:2 (Variations 3 and 4).