CHEMISTRY PROFILE OF YOUNG LEACHATE FROM RAJAMANDALA LANDFILL

• Main Author: Ribka
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/35314
• Institution: Institut Teknologi Bandung

Leachate is the liquid resulted from seepage of waste that accumulate at the basis of landfill due to natural force, rain, water from organic garbage, and other processes. Rajamandala landfill has large quantities of leachate that is not managed exclusively as its content of organic and inorganic substances is still uncertain. Therefore, a study aimed to understand the chemical profile of the leachate from Rajamandala landfill is conducted to determine the accurate leachate treatment. The preliminary analysis from sample Rajamandala 2-2 found that the value of pH is 8.6, the value of the electrical conductivity is 24,3 mS, the value of BOD is 1123 mg/L, and the value of COD is 876,48 mg O2/L. Furthermore, the content of organic substances was determined using GC/MS that showed 50,31% of methyl isobutyl ketone and 49,69 % of limonene contents in hexane phase; as well as 37,62% of limonene, 11,41% of palmitic acid, 44,20% of oleic acid, and 6,76% of 9,12-octadecanadienal contents in chloroform phase. Moreover, the inorganic substances were analyzed with XRF and XRD, the functional groups of compounds in leachate was identified using an infrared spectrophotometer, and the spectrum of leachacte was displayed using a UV-VIS spectrophotometer. Finally, the behavior of metal ions such as Fe, Cu, Pb, and Zn in the leachate is determined by means of AAS while the chloride concentration in the leachate was determined by chloride ion selective electrode. The results from the comprehensive analysis showed that the Rajamandala landfill leachate discharged into the environment is still dangerous for the environment and specific treatment is required to reduce the danger of leachate itself.