Analisis Pengaruh Kapasitas Penetralan Batugamping Dengan Menggunakan Metode Acid Buffering Characteristic Curve
DOI:
https://doi.org/10.33536/jg.v9i01.1460Keywords:
acid mine drainage, buffer, grain size, pH valueAbstract
Acid Mine Drainage (AMD) is an environmental problem as a mining activities consequence that has a relatively high pH value and dissolved metal content. One of the materials that can be utilized in solving AMD problems is limestone. The purposes of this study are to determine the neutralizing characteristics of limestone in acid neutralization and to determine the effect of limestone's grain size on neutralizing capacity. The research method is Acid Buffering Characteristic Curve (ABCC) test method. The results show that the limestone sample measuring 0.074 mm (100 mesh) can maintain the pH or show its buffer properties in the pH 5 range after the acid addition as much as 8.4 Kg H2SO4/t. Meanwhile, the limestone sample measuring 0.149 mm (200 mesh) can maintain the pH value in the pH range of 6 or shows its buffer properties after an acid addition of 1.2 Kg H2SO4/t. Then, the smaller the limestone’s grain size, the higher the pH value that can be maintained, and the bigger the limestone grain size, the lower the pH value that can be maintained.
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