A new gold recovery method based on corn starch instead of cyanide could help reduce the amount of toxins introduced into the environment during gold mining.
The process was discovered by accident when Northwestern University postdoctoral fellow Zhichang Liu mixed together two solutions at room temperature: one containing the corn starch-derived alpha cyclodextrin and the other containing a dissolved gold salt. Liu had been hoping to create cubes to store gases and small molecules, but instead the mixture produced bundles of gold needles made up of tiny gold wires that could be harvested from the liquid.
Not only is the corn starch-based gold extraction process less expensive than conventional methods, it is also less toxic—producing the relatively benign alkali metal salt as a by-product.
I like to joint your group. Please regiester my name and e mail for your news letter Posted by patrick chin on June 24, 2013
We are local miners from the east region of Cameroon. We are looking for genuine buyers and mandates with the below description.
Go through and get back to us for more information.
The commodity/particulars that the Seller has offered and willing supply to the Buyer are as follows:
COMMODITY : Raw unprocessed Gold
Min: 99.95 % (24 carat) Au-content, Material does not contain deleterious elements.
Origin: Cameroon, Africa
FINENESS: 24 Carats Minimum
Form: Gold Dore Bars(AU Concentrate)And gold Nuggets.
PRICE: USD $ 28,000 USD per Kg - bars
Email : email@example.com
Skype address : lobe.sabour
Phone number : +237 698-37-81-45 Posted by balleck paul on September 21, 2016