Solidification and stabilization of mercury-contaminated tailings in artisanal and small-scale gold mining using tras soil


  • Ranno Marlany Rachman Department of Civil Engineering, Halu Oleo University
  • Uniadi Mangidi Department of Civil Engineering, Halu Oleo University
  • Yulinah Trihadiningrum Department of Environmental Engineering, Institut Teknologi Sepuluh Nopember



mercury, stabilization/solidification, tailing, tras soil


Artisanal and small-scale gold is known to be sources of mercury pollution. This mercury contamination occurs when gold is isolated by the amalgamation method, contamination occurs. Mercury pollution in small-scale artisanal gold mining in the Kulon Progo area of Yogyakarta, the lowest tailing content was 164.49 mg kg-1, and the highest was 383.21 mg kg-1. This value exceeded the quality standard stipulated by Indonesian Government Regulation 22 of 2021 of 75 mg kg-1. The technology that can control pollution is stabilization/solidification (S/S). This research aimed to determine the optimum composition of the tailings mixture with tras soil. Variations in the design of tras soil with tailings were 100:0, 90:10, 80:20, 70:30, 60:40, 50:50, 40:60, 30:70, 20:80, and 10:90. The results showed that the optimum tras: tailings soil composition was 90:10, with a compressive test of 31 t m-2. Toxicity Characteristic Leaching Procedure (TCLP) was 0.0033 mg L-1 according to the quality standard of Indonesian Government Regulation no. 22, 2021, with a value of 0.05 mg L-1. The compressive strength results follow the quality of the US EPA of 35 t m-2.

Author Biographies

Ranno Marlany Rachman, Department of Civil Engineering, Halu Oleo University

Department of Civil Engineering, Halu Oleo University, Kendari, 93232, Indonesia

Uniadi Mangidi, Department of Civil Engineering, Halu Oleo University

Department of Civil Engineering, Halu Oleo University, Kendari, 93232, Indonesia


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How to Cite

Rachman, R. M., Mangidi, U., & Trihadiningrum, Y. (2023). Solidification and stabilization of mercury-contaminated tailings in artisanal and small-scale gold mining using tras soil. Journal of Degraded and Mining Lands Management, 10(4), 4575–4582.



Research Article