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|Title: ||Impact of Cyanide Utilization in Mining on the Environment|
|Authors: ||Boadi, Nathaniel Owusu|
Twumasi, S. K.
Ephraim, J. H.
|Issue Date: ||2009|
|Publisher: ||Int. J. Environ. Res.|
|Citation: ||Int. J. Environ. Res., 3(1):101-108, Winter 2009 ISSN: 1735-6865|
|Abstract: ||Cyanide (CN ) is a toxic species that is found predominantly in industrial effluents
generated by metallurgical operations. Cyanide’s strong affinity for metals makes it favorable as an
agent for metal finishing and treatment and also as a lixiviate for metal leaching, particularly gold.
These technologies are environmentally sound but require safeguards to prevent accidental spills
from contaminating soils as well as surface and ground waters. In this work, total cyanide, sodium,
cadmium, iron, zinc and copper concentrations were determined in soil, cassava, hand dug wells and
pipe-borne water from Bibiani, a gold mining town in the Western Region of Ghana. Total cyanide
levels in soil ranged from 6.04 to 26.17 mg/kg and in water, from 2.17 to 7.83 mg/L. Total cyanide
concentrations in raw cassava ranged from 82.45 to 142.91 mg/kg fresh weight. The cooked cassava
had cyanide concentrations ranging from 6.79 to 24.91 mg/kg and the cassava peels, 360.05 to 509.51
mg/kg. Sodium concentrations ranged from 998.1 to 1794.7 mg/kg in the soil, 25.94 to 29.92 mg/L in
the water and 114.7 to 159.6 mg/kg in cassava. The concentration of iron in the soil ranged from 77.88
to 302.08 mg/kg whilst in water and cassava, iron was below detection limit. Copper concentrations
ranged from 12.4 mg/kg to 115.4 mg/kg in soil, 4.6 to 6.0 mg/kg in cassava and below detection in
water. The zinc concentrations ranged from 24.1 to 170.3 and 7.6 to 11.6 mg/kg, in soil and cassava
respectively. Zinc was below detection in most of the water samples and cadmium was generally low
in all the samples. The pH of the soil, water and cassava ranged from 3.88 to 6.95, 3.14 to 7.44 and 5.42
to 5.60 respectively. The moisture content of the soil ranged between 2.47 and 35.40% and that of cassava, 56.08 to 56.87 %.|
|Description: ||An article published by Int. J. Environ. Res., 3(1):101-108, Winter 2009
|Appears in Collections:||College of Science|
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