Alex Burke
Hero Member
I read about this sponge has potential in catching fine gold, I don't know anything more than whats in the patent as far as where to get it but it seems a few of these sponges lined up could have some small time miner applications. I think BASF used to may still make it? Hope this is useful/interesting to somebody.
Quote from patent:
"It is accordingly an object of the present invention to provide a polymer capable of absorbing transition metal ions while having little affinity for multi-valent non-transition metal ions such as aluminum, calcium and magnesium.
It is another object of this invention to provide a polymer as in the foregoing object in a physical form presenting little impedance to the flow of water in contact with said polymer.
It is a further object of the present invention to provide a polymer of the aforesaid nature disposed upon a porous sponge and capable of absorbing significant amounts of transition metal ions while being substantially unaffected by water-borne suspended matter."
link to FREE patent Polymer product for the selective absorption of dissolved ions - Rainer, Norman B.
link to nano-net and sponge discussion that gave me patent link Extraction of gold from seawater
Quote from patent:
"It is accordingly an object of the present invention to provide a polymer capable of absorbing transition metal ions while having little affinity for multi-valent non-transition metal ions such as aluminum, calcium and magnesium.
It is another object of this invention to provide a polymer as in the foregoing object in a physical form presenting little impedance to the flow of water in contact with said polymer.
It is a further object of the present invention to provide a polymer of the aforesaid nature disposed upon a porous sponge and capable of absorbing significant amounts of transition metal ions while being substantially unaffected by water-borne suspended matter."
link to FREE patent Polymer product for the selective absorption of dissolved ions - Rainer, Norman B.
link to nano-net and sponge discussion that gave me patent link Extraction of gold from seawater
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