Reducing Mercury Emmisions In Amazonia

Reducing Mercury Emmisions of Small Scale Gold Buying Shops in Amazonia Designing and implementing low cost, easy to build and effective mercury capture systems in gold shops in Brazil and Peru

Presentation Outline ,[object Object],[object Object],[object Object],[object Object]

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Why focus on Gold Shops? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sediments processed with mercury Amalgam (Hg-Au) (50% mercury) Simplified ASM gold processing cycle

Sediments processed with mercury Burned in the field Amalgam (Hg-Au) (50% mercury) Amalgam (Hg-Au) (5-15 % mercury) Simplified ASM gold processing cycle

Sediments processed with mercury Burned in the Field Purified gold Amalgam (Hg-Au) (50% mercury) Amalgam (Hg-Au) (5-15% mercury) Burned in the Gold Shops Simplified ASM gold processing cycle

Purified Gold Amalgam (5-15 % mercury) Mercury Released to the Environment Burned in the Gold shop Simplified ASM gold processing cycle

Purified Gold Amalgam (5-15 % mercury) Mercury Released to the Environment Mercury Capture System Burned in the Gold shop Simplified ASM gold processing cycle

Itaituba Creporizão ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Project Study Areas Puerto Maldonado & Laberinto

Data Collection Puerto Maldonado / Laberinto Madre de Dios , Peru (May/Sept 2008) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Data Collection Itaituba/Creporizão, Brazil (October 2006)

Itaituba,Brazil - December 2006

Itaituba, Brazil - December 2006

Puerto Maldonado / Laberinto - May 2008

Study Results Itaituba/ Creporizão, Brazil ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Shops with Mercury Control Technology Madre de Dios, Peru No Control 9 System not working 2 ---------------------------- Total 11 No Control 6 System not working 1 ---------------------------- Total 7 No Control 13 System not working 0 ---------------------------- Total 13

Mercury Concentrations Inside Gold Shops Average concentration, 11 shops in Puerto Maldonado ,[object Object]

Mercury Concentrations adjacent to Gold Shops Average concentration, 11 shops in Puerto Maldonado ,[object Object]

Designing a Mercury Capture System Design Principles ,[object Object],[object Object],[object Object],[object Object],Argonne engineers developed prototypes using dynamic thermodynamic aerosol simulation models and proven ventilation engineering theory.

EPA Mercury Capture System Interior of the top cone showing the flow smoothening vane The system contains a powerful extractor fan to create negative air pressure to draw exhaust into the System A series of baffle plates act as impaction surfaces for mercury aerosols to strike and coagulate . The extractor fan and the baffle plates are joined in a single unit that is easy to transport and insert into a 200 liter drum.

Flexible System Installation Itaituba and Creporizao, Brazil

Pilot system efficiency tests Brazil, July 2007 >80% measured removal efficiency Mercury Concentrations in Exhaust Mean of 6 tests runs burning 100% mercury samples Exhaust without treatment: 1580 mg/m 3 Exhaust with treatment : 330 mg/m 3 Cost of system : Materials + Labor + Installation ~ US $450

Potential Mercury Emmisions Prevented ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],8 kg of mercury emmision prevented per year per Gold Shop

EPA Mercury Capture System Advantages ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Federal, State and Municipal governments actively supported the pilot system installtion and the workshop

Installation of a Pilot System Sept 19 2008, Puerto Maldonado ,[object Object],[object Object],[object Object]

High emitting shop Burns 3 kg gold / day High levels of mercury avg. 450 mcg/m 3 during burns (WHO reference: 20 mcg/ m 3 )

Niveles de Mercurio A & M Metals , Puerto Maldonado ,[object Object],[object Object]

Effects of Mercury Capture System Installation Mercury Concentrations Inside shop - A & M Metals , Puerto Maldonado ,[object Object]

Primer Seminario Sistema Colector de Mercurio Puerto Maldonado: September 19, 2008 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Primer Seminario Sistema Colector de Mercurio Puerto Maldonado: 9/19/08 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Mercury Reduction is Artisanal Mining in the Brazilian Amazon

Mercury Reduction in Artisanal Mining in the Peruvian Amazon Lima: Ministry of Energy and Mines ,[object Object]

Discussions with Vice Minister Felipe Isasi, Ministry of Mines to catalyze action on addressing mercury in gold shops and disseminating the Mercury Capture System technology throughout Peru Lima: Ministry of Energy and Mines

For more information ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Acknowledgements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Reducing Mercury Emmisions In Amazonia

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