Mine waste source for bio-mineral fertilizer to remineralize agricultural soil

A method for producing a soil additive using mine waste for agricultural use, comprising:

• treating the mine waste to selectively remove one or more elements;
• and
• combining the treated mine waste with organic material, wherein said mine waste includes mercury byproduct of an amalgamation process, and the one or more elements is mercury.

A method for producing a soil additive using mine waste for agricultural use, comprising:

• treating the mine waste to selectively remove one or more elements;
• and
• combining the treated mine waste with organic material, wherein said one or more elements includes mercury, and said treating the mine waste includes leaching the mercury from the mine waste using a water solution of sodium thiosulfate and copper sulfate pentahydrate.

A method for producing a soil additive using mine waste for agricultural use, comprising:

• combining the mine waste with a leaching agent in a stirred reactor to remove one or more elements from the mine waste, and separating a leachate liquid from the remaining solid to provide treated mine waste;
• and
• combining organic material and the treated mine waste to provide a combination, and using anaerobic digestion of the combination to produce a soil additive.