Simulation of Mercury Transport from Gold Mining Activities in Pelawan River, Sarolangun

The use of mercury as a material for bonding and separating gold with sand in gold mining has the potential to contaminate ground water and river water. In this study, the distribution of mercury parameters from gold mining occurred in Pelawan river, Sarolangun regency, Jambi Province. To determine contaminants flow, In this study mathematical modeling mercury was carried out using 1-dimensional analytic model based on advection-dispersion equation in surface water. The concentration of mercury in water is measured 3 times for calibration and model validation. From the measurements at some point, it is known that the Pelawan river is contaminated with mercury, the mercury value obtained is 0.007 mg / l, this value is far past the quality standard based on Government Regulation No.82 of 2001 on the management of water quality and water pollution control. Mercury simulation showed that the longer time (t), a constant input of pollutants that create greater pollution load. As a result, the concentration of pollutants in the larger t will decline at a greater distance. The resultsof mercyry simulation with k = 0,22/day showed that the mercury model is quite close to the mercury concentration observations.