logging in or signing up lect01 ryan amd Raimondo Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 269 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: March 03, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript What is Acid Mine Drainage? A Hydrogeobiochemist’s Perspective: What is Acid Mine Drainage? A Hydrogeobiochemist’s Perspective What is Acid Mine Drainage?: What is Acid Mine Drainage? Water from mine sites... high acidity low pH high metal concentrations high toxicity ...entering pristine natural watersWhat is Acid Mine Drainage?: What is Acid Mine Drainage? What produces high acidity, high metals? What is Acid Mine Drainage?: What is Acid Mine Drainage? Water from mines mining below “water table” inflows require de-watering abandonment ends de-watering water floods mine workings outflows from adits, other openingsWhat is Acid Mine Drainage?: What is Acid Mine Drainage? Water from mines flow through waste rock rainfall infiltration through piles overland flow contaminated flow back to surface water High Ore Creek valley, Boulder River watershed, MontanaWhat is Acid Mine Drainage?: What is Acid Mine Drainage? Water from mines flow through waste rockWhat is Acid Mine Drainage?: What is Acid Mine Drainage? What produces high acidity, high metals? What is Acid Mine Drainage?: iron: pyrite, marcasite, pyrrhotite lead: galena mercury: cinnabar arsenic: arsenopyrite, orpiment copper: covellite, chalcocite, chalcopyrite zinc: sphalerite What is Acid Mine Drainage?What is Acid Mine Drainage?: pyrite + oxygen + water ferrous iron + sulfate + acid FeS2(s) + 7/2 O2 + H2O Fe2+ + 2 SO42- + 2 H+ What is Acid Mine Drainage? What is Acid Mine Drainage?: pyrite + oxygen + water ferrous iron + sulfate + acid FeS2(s) + 7/2 O2 + H2O Fe2+ + 2 SO42- + 2 H+ ferrous iron + oxygen + acid ferric iron + water Fe2+ + ¼ O2 + H+ Fe3+ + ½ H2O “acidophiles” Thiobacillus ferrooxidans Ferroplasma acidarmanus What is Acid Mine Drainage?What is Acid Mine Drainage?: pyrite + ferric iron + water ferrous iron + sulfate + acid FeS2(s) + 14 Fe3+ + 8 H2O 15 Fe2+ + 2 SO42- + 16 H+ What is Acid Mine Drainage?What is Acid Mine Drainage?: What is Acid Mine Drainage? What produces high acidity, high metals? What is Acid Mine Drainage?: What is Acid Mine Drainage? Acidity Produced for each pyrite: 4 H+ (by microbial mediation) 16 H+ (by ferric iron catalysis)What is Acid Mine Drainage?: vinegar 0 7 14 ammonia pure water sea water Great Salt Lake acid rain acid mine drainage What is Acid Mine Drainage?What is Acid Mine Drainage?: vinegar 0 7 pure water sea water acid rain acid mine drainage -4 -3.6 Iron Mountain, California What is Acid Mine Drainage?What is Acid Mine Drainage?: What is Acid Mine Drainage? Effect of low pH on aquatic organisms direct physical damage to skin, gills, eyes challenge to maintenance of internal pH reduced saturation of hemoglobin secondary effects increase in metal concentrations Narrow range of pH tolerance What is Acid Mine Drainage?: What is Acid Mine Drainage? What produces high acidity, high metals? What is Acid Mine Drainage?: What is Acid Mine Drainage? What is a metal?Interlude: Interlude Setting the Periodic Table The Periodic Table, Primo Levi The Periodic Kingdom: A Journey into the Land of Chemical Elements, P.W. Atkins Molecules at an Exhibition: Portraits of Intriguing Materials in Everyday Life, John Emsley Uncle Tungsten: Memories of a Chemical Boyhood, Oliver SacksInterlude: Interlude Family Tree, Trine BumillerWhat is Acid Mine Drainage?: What is Acid Mine Drainage?What is Acid Mine Drainage?: What is Acid Mine Drainage? pH and metals low pH high metal solubility more metal in water more metal in organisms near-neutral pH low metal solubility metal precipitate out of water less metal in organismsWhat is Acid Mine Drainage?: aluminum precipitates aluminum remains dissolved What is Acid Mine Drainage?What is Acid Mine Drainage?: What is Acid Mine Drainage? Metals and toxicity of aquatic organisms neurotoxic effect (e.g., mercury) “stress” (e.g., mucus on gills) cardiovascular disease immune dysfunction osteomalcia Bioaccumulation, biomagnification greater toxicity to higher organisms e.g., mercury in tunaWhere is AMD?: Where is AMD? Seattle Post-Intelligencer, 2001What is Acid Mine Drainage?: What is Acid Mine Drainage? Summary: Water from mine sites... low pH high metal concentrations high toxicity ...entering pristine natural waters You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
lect01 ryan amd Raimondo Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 269 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: March 03, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript What is Acid Mine Drainage? A Hydrogeobiochemist’s Perspective: What is Acid Mine Drainage? A Hydrogeobiochemist’s Perspective What is Acid Mine Drainage?: What is Acid Mine Drainage? Water from mine sites... high acidity low pH high metal concentrations high toxicity ...entering pristine natural watersWhat is Acid Mine Drainage?: What is Acid Mine Drainage? What produces high acidity, high metals? What is Acid Mine Drainage?: What is Acid Mine Drainage? Water from mines mining below “water table” inflows require de-watering abandonment ends de-watering water floods mine workings outflows from adits, other openingsWhat is Acid Mine Drainage?: What is Acid Mine Drainage? Water from mines flow through waste rock rainfall infiltration through piles overland flow contaminated flow back to surface water High Ore Creek valley, Boulder River watershed, MontanaWhat is Acid Mine Drainage?: What is Acid Mine Drainage? Water from mines flow through waste rockWhat is Acid Mine Drainage?: What is Acid Mine Drainage? What produces high acidity, high metals? What is Acid Mine Drainage?: iron: pyrite, marcasite, pyrrhotite lead: galena mercury: cinnabar arsenic: arsenopyrite, orpiment copper: covellite, chalcocite, chalcopyrite zinc: sphalerite What is Acid Mine Drainage?What is Acid Mine Drainage?: pyrite + oxygen + water ferrous iron + sulfate + acid FeS2(s) + 7/2 O2 + H2O Fe2+ + 2 SO42- + 2 H+ What is Acid Mine Drainage? What is Acid Mine Drainage?: pyrite + oxygen + water ferrous iron + sulfate + acid FeS2(s) + 7/2 O2 + H2O Fe2+ + 2 SO42- + 2 H+ ferrous iron + oxygen + acid ferric iron + water Fe2+ + ¼ O2 + H+ Fe3+ + ½ H2O “acidophiles” Thiobacillus ferrooxidans Ferroplasma acidarmanus What is Acid Mine Drainage?What is Acid Mine Drainage?: pyrite + ferric iron + water ferrous iron + sulfate + acid FeS2(s) + 14 Fe3+ + 8 H2O 15 Fe2+ + 2 SO42- + 16 H+ What is Acid Mine Drainage?What is Acid Mine Drainage?: What is Acid Mine Drainage? What produces high acidity, high metals? What is Acid Mine Drainage?: What is Acid Mine Drainage? Acidity Produced for each pyrite: 4 H+ (by microbial mediation) 16 H+ (by ferric iron catalysis)What is Acid Mine Drainage?: vinegar 0 7 14 ammonia pure water sea water Great Salt Lake acid rain acid mine drainage What is Acid Mine Drainage?What is Acid Mine Drainage?: vinegar 0 7 pure water sea water acid rain acid mine drainage -4 -3.6 Iron Mountain, California What is Acid Mine Drainage?What is Acid Mine Drainage?: What is Acid Mine Drainage? Effect of low pH on aquatic organisms direct physical damage to skin, gills, eyes challenge to maintenance of internal pH reduced saturation of hemoglobin secondary effects increase in metal concentrations Narrow range of pH tolerance What is Acid Mine Drainage?: What is Acid Mine Drainage? What produces high acidity, high metals? What is Acid Mine Drainage?: What is Acid Mine Drainage? What is a metal?Interlude: Interlude Setting the Periodic Table The Periodic Table, Primo Levi The Periodic Kingdom: A Journey into the Land of Chemical Elements, P.W. Atkins Molecules at an Exhibition: Portraits of Intriguing Materials in Everyday Life, John Emsley Uncle Tungsten: Memories of a Chemical Boyhood, Oliver SacksInterlude: Interlude Family Tree, Trine BumillerWhat is Acid Mine Drainage?: What is Acid Mine Drainage?What is Acid Mine Drainage?: What is Acid Mine Drainage? pH and metals low pH high metal solubility more metal in water more metal in organisms near-neutral pH low metal solubility metal precipitate out of water less metal in organismsWhat is Acid Mine Drainage?: aluminum precipitates aluminum remains dissolved What is Acid Mine Drainage?What is Acid Mine Drainage?: What is Acid Mine Drainage? Metals and toxicity of aquatic organisms neurotoxic effect (e.g., mercury) “stress” (e.g., mucus on gills) cardiovascular disease immune dysfunction osteomalcia Bioaccumulation, biomagnification greater toxicity to higher organisms e.g., mercury in tunaWhere is AMD?: Where is AMD? Seattle Post-Intelligencer, 2001What is Acid Mine Drainage?: What is Acid Mine Drainage? Summary: Water from mine sites... low pH high metal concentrations high toxicity ...entering pristine natural waters