Sustainable Mercury-Free Botanical Gold Recovery
Our mission is simple - create a cleaner, safer, and more sustainable future for gold recovery.
Manipueira Gold Recovery Technology
In 2021, Manipueira Gold Recovery Technology, Inc., (f.k.a. Alchemy Mining Group, Inc.) was incorporated and subsequently developed a four-stage ESG-aligned mercury-free botanical gold leaching system designed to provide a plant-based alternative to mercury and synthetic cyanide salts used in artisanal gold ore processing. Derived from Manihot esculenta Crantz, Manipueira functions as a plant-based leaching agent under controlled chemical conditions, enabling improved gold recovery while reducing toxic environmental burden.
With growing global demand for responsible mining solutions, we believe Manipueira represents a significant investment opportunity with the potential for financial returns, mitigating health threats, and positive environmental impact.
Bruce published the Action Plan promoting the strategy designed to introduce and demonstrate the use of Manipueira and; the re-purposing of a 50-tonne-per-day mercury and synthetic cyanide salts ore and tailings processing facility into the world’s first Manipueira Precious Metals Leaching Center thereby establishing a scalable, circular-economy model for environmentally responsible and health-conscious gold production.
Manipueira, a toxic agricultural waste by-product from the cyanogenic bitter cassava plant (a.k.a. cassava-wastewater) produced by an internal chemical reaction as a defense mechanism triggered only when the integrity of the plant cellular structure is compromised for example; by preditors or flour manufactures crushing the plant. The bitter cassava plant does not contain cyanide (CN-).
Manipueira ends the toxic relationship between mercury, gold, and artisanal miners by introducing a scalable, sustainable plant-based state-of-the-art processing technology scientifically documented to recover → 99.3% of gold from ore concentrates and 99.6% from mercury-contaminated tailings in just two hours (Marcello M. Veiga & Pariya Torkaman, YouTube Video 2021).
Manipueira, which stinks when fermented, attracts insects, creates health threats, causes biodiversity destruction, contaminates the soil, drinking water, irrigation water contaminating the crops, and polluting the rivers.
In 2021, the global bitter cassava plant harvesting was estimated at 308 million tonnes (Blue Sense, 2023). According to P. Torkaman et al., 2021, 30 - 40% of the plants weight is the cassava wastewater containing aqueous free cyanide representing ~ 120 million tonnes of the Manipueira is recklessy discarded to the environment annually.
“The symbiosis of artisanal ore processors and flour makers is a win-win situation to reduce environmental pollution, health threats, and mitigating an unintended consequence of harvesting the bitter cassava plant” (P. Torkaman et al., 2021)