出版社：Polish Society of Ecological Engineering (PTIE)
摘要：Traditional gold mining activity is one of the sources of mercury contamination.Total mercury concentration in tailing ponds in Kulon Progo ranged from 164.49 mg/kg to 383.21 mg/kg, which exceeded the quality standard values set by the government of Indonesia No.101 of 2014, which is 75 mg/kg.One method that can be applied is stabilization/solidification (S/S).This study aims to determine the optimum composition of the tailing mixture with fly ash in S/S process.The variations of fly ash composition with tailing are 100:0, 90:10, 80:20, 70:30, 60:40, 50:50, 40:60, 30:70, 20:80 and 10:90.The results of the study found that the optimum composition of fly ash: tailings was 10:90, with compression test of 74 ton/m2 and TCLP test was 0.0069 mg/L.The obtained compression test results were in accordance with US EPA Standard quality of 35 ton/m2.TCLP test results meet the standard of Indonesian Government Regulation no.101 of 2014, amounting to 0.05 mg/L.
