The waste mercury and iron produced gold mining threaten of habitat or continuity of living things because these substances are toxic. Merkury is a material that is harmful to human body. Especially in the contaminated food source, will affect the health slowly.
If the mercury waste pollutes the ocean, then spread more widely. In addition, the fish catches of fishermen will also be contaminated. When consumed contaminated fish, the mercury left in the human body. Retnowati Y (2011) has conducted research on bacterial mercury-contaminated waste user gold mining. She said; mercury utilizing bacteria were isolated through batchwise enrichment culture techniques using modified nutrient broth containing 0.1 mgL-1 methyl mercury chloride (CH3HgCl). Selection of isolates was carried out though the growth experiment based on their abilities to grow on different methyl mercury concentrations, in terms of generation time (g) and specific growth rates (ยต). Three type of bacteria showing the highest, moderate, the lowest generation time were selected and purified for futher indentify experiments. The selected isolates were identified using standard methods. The results revealed that fourteen mercury utilizing bacteria were successfully isolated from river sediment (133.5x106 CFU/ml). only four isolates were able to grow on growth medium containing 2-4 mg L-1 at generation times of 1.3-5.5 h and specific growth rates of 0.1-0.5 generation h-1. The four selection isolates were identified as Bacillus sp. See fig;Gold mining waste.
If the mercury waste pollutes the ocean, then spread more widely. In addition, the fish catches of fishermen will also be contaminated. When consumed contaminated fish, the mercury left in the human body. Retnowati Y (2011) has conducted research on bacterial mercury-contaminated waste user gold mining. She said; mercury utilizing bacteria were isolated through batchwise enrichment culture techniques using modified nutrient broth containing 0.1 mgL-1 methyl mercury chloride (CH3HgCl). Selection of isolates was carried out though the growth experiment based on their abilities to grow on different methyl mercury concentrations, in terms of generation time (g) and specific growth rates (ยต). Three type of bacteria showing the highest, moderate, the lowest generation time were selected and purified for futher indentify experiments. The selected isolates were identified using standard methods. The results revealed that fourteen mercury utilizing bacteria were successfully isolated from river sediment (133.5x106 CFU/ml). only four isolates were able to grow on growth medium containing 2-4 mg L-1 at generation times of 1.3-5.5 h and specific growth rates of 0.1-0.5 generation h-1. The four selection isolates were identified as Bacillus sp. See fig;Gold mining waste.
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