Iron Oxidation Kinetics Denae Athay Working with Jessica Brumley, Danette Miller, Emily Spargo, Kim Wahnee, Dr. Nairn and Dr. Strevett REU 2000.

Slides:

Advertisements

Similar presentations

Storm Event-Driven Metal Transport Dynamics in the Initial Oxidation Cells of a Passive Treatment System Center for Restoration of Ecosystems and Watersheds,

Advertisements

Water Science Electroneutrality, pH, Alkalinity, Acidity

Iron and Manganese Cycling

Precipitimetry Dr M. AFROZ BAKHT.

Paper Review Interstitial Ion Concentrations as an Indicator of Phosphorus Release and Mineral Formation in Lake Sediments G C Holdren and D E Armstrong.

Characterization and Remediation of Iron(III) Oxide-rich Scale in a Pipeline Carrying Acid Mine Drainage at Iron Mountain Mine, California, USA Kate Campbell.

Adsorption of Dissolved Metals from the Berkeley Pit using Thiol-SAMMS By: Amaury Betancourt, DOE Fellow, Florida International University, Dr. Dawn Wellman,

Remediation of Acid Mine Drainage by Constructed Wetlands.

Surface Water Geochemistry of Deckers Creek Basin Geology 399 Qingyun Sun.

Environmental Resources Unit C Animal Wildlife Management.

By: Audella Eid Advisor: Dr. R. Zurayk Constructed Wetlands for Wastewater treatment.

Passive Remediation of High Metal Loading, Net Acidic Mine Impacted Water Using Crab Shell Chitin as a Substrate Amendment Amanda K. Brown and Dr. Rachel.

Acid Mine Drainage. Mining & the Environment Mine overburden & waste soils (mine tailings) are waste products generated by the mining industry. When these.

GEOCHEMICAL MODULE FOR “AMDTreat” Charles A. Cravotta III and David L. Parkhurst, U.S. Geological Survey Brent P. Means, Robert M. McKenzie, and Bill Arthur,

Wetlands for remediation of acid-mine drainage Alyssa Shiel.

Acid Mine Drainage: From Formation to Remediation CE Aquatic Chemistry Julie Giardina Dominike Merle.

1 Abandoned Coal Mines: In-Situ Treatment of AMD with CCPs Jess W. Everett, Ph.D., P.E. Associate Professor Civil Engineering Rowan University.

Water quality issues – ‘natural’ controls Acidity – low pH due to infiltration of acidified precipitation; acids from mine drainage; pyrite oxidation.

An Introduction to Acid Mine Drainage by George Mitchell and Tim Craddock.

Effects of global warming on the world’s oceans Ashley A. Emerson.

Metals Treatment and Removal Mechanisms Neutral Mine Drainage Treatment with Constructed Wetlands Mark W. Fitch, Joel G. Burken, Chang Ye Department of.

Determination of Dominant Trace Metal Sequestration Processes in Two Vertical Flow Bioreactors Using Modified Tessier Extractions J.A. LaBar and R.W. Nairn.

Acid Lakes from Lignite Mines Dan Henderson. Lignite  Brown/soft coal.  Used for steam electric power generation.  Mined in open pits.  Production.

Iron and Manganese Removal

H-ESD : Environmental and Sustainable Development

Reclaiming the health of British rivers Optimising conditions in low-cost systems for treating diffuse water pollution Carr 1, S., Heal 1, K.V., Lumsdon.

Aquatic Ecosystem Chemistry Dissolved Oxygen (DO) Temperature Redox Potential (ORP) Major ions (Hardness; Conductivity; Salinity/TDS) Carbonate Buffer.

1 In-Situ Treatment of Groundwater with Non-aqueous Phase Liquids December 10-12, 2002, Chicago, IL Scott G. Huling, Ph.D., P.E. USEPA Robert S. Kerr Environmental.

problem solved Preservation of Samples for RETS, REMP and RW Bob Litman Radiochemistry Laboratory Basics Presented in coordination with GEL.

Acid Pollution of Natural Waters. Outline of Topics Background –Acids and bases –pH ranges in the hydrosphere –Biological effects of acid pollution Sources.

Shipwrecks, Corrosion and Conservation

MINE DRAINAGE AERATION USING A TROMPE 1 Bruce Leavitt PE PG, Consulting Hydrogeologist Washington, Pennsylvania 1 Patent Pending.

SELENIUM MOBILITY IN COAL AND OVERBURDEN IN CENTRAL APPALACHIA R.R. Maggard.

Formation and Treatment

Soil Analysis Of A Volunteer Wetland Danette Miller Advisors: Dr. Nairn and Dr. Strevett University of Oklahoma.

2.2 Measuring abiotic components of the system.  List the significant abiotic (physical) factors of an ecosystem.  Describe and evaluate.

Seasonal Changes in Biogeochemistry of a Natural Wetland Receiving Drainage from an Abandoned Mine Diane McKnight and Eric August – University of Colorado.

Water Quality Testing SVN3E.

Continuous Water-Quality Field Methods Micelis Doyle & Joe Rinella U.S. Geological Survey &

Environmental Quality: Restoring Bronx River. By: Swapan Bhuiyan.

By Alex Fuehrer. Introduction Question- Is there statistical evidence that the water quality of the two sites of the flathead are different? Hypothesis-

Topic 06 – Kinetics 6.1: Rates of Reaction IB Chemistry T06D01.

Nutrient and Sulfide Export From a Mine Drainage Passive Treatment System S.A. Yepez & R.W. Nairn 29 th Annual Meeting of the American Society of Mining.

Ch.4. Acid Mines Drainages (AMD)

The Carbon Cycle. Carbon Dioxide and Carbonate system Why is it important? 1. Regulates temperature of the planet 2. Important for life in the ocean 3.

August 27, 2008 Treatment of Heavy Metals and Elimination of Sulfur with a Novel Sulfate Reducing Permeable Reactive Barrier Containing ZVI Dr. Jim Field.

The Islamic University of Gaza- Environmental Engineering Department

REDOX/METAL QUENCHING GROUP CATEGORY 1: BEST PRACTICES What issues to pay attention to (sampling, analysis) Issues to be aware of when interpreting data.

Sustainable development and the environment Remediation.

Mine Water Quality Changes in at the Mayer Ranch Wetland Kim Wahnee Dr. Robert Nairn Dr. Keith Strevett REU 2000.

We are here on earth to do good for others. What the others are here for, I don't know. W. H. Auden.

 Water Quality Variability in a Bioswell and Concrete Drainage Pipe, Southwest Lincoln, Nebraska Jessica Shortino, B.S. University of Nebraska-Lincoln.

The Effects of Eutrophication and Salinization on Methane Production in Urban and Rural Lakes Rebecca Kiekhaefer Dr. Carla Koretsky, Thesis Chair Dr. Alan.

Acid drainage is a persistent environmental problem in many mineralized areas, especially where mining has taken place. Not all drainage, however, is.

Acid Mine Drainage : Metals in Water and Sediment Upper Lefthand Creek, Northwestern Boulder County 2003 REU Program – August 7, 2003 Roshan Cholas, University.

Water Testing APES.

FIELD INVESTIGATION OF IN SITU LIME NEUTRALIZATION OF ACIDIC SEDIMENT

Iron (III) Oxide Formation in solution with calcite and other species

Water Testing APES.

Wastewater Treatment.

Comparative simulative studies using PHREEQC-Interactive and Visual MINTEQ model for understanding metal-NOM complexation occurring in cooling and raw.

Assimilation of Iron in the Ocean: Acid dissolution of Micro and Nano Goethite in the Presence of Inorganic Oxy-anions Patrick Kyei, Gayan R. Rubasinghege.

Water Quality Monitoring

Hydraulics of Wetlands: Monitoring and Modeling Emily Spargo

MRU: Metal Removal Units

What’s the end point?.

Lake Comparison Physical and Chemical Properties

MRU: Metal Removal Units

How Healthy is Your Water?

Investigating Daily Variation in Lotic Prairie Ecosystems

Presentation transcript:

Iron Oxidation Kinetics Denae Athay Working with Jessica Brumley, Danette Miller, Emily Spargo, Kim Wahnee, Dr. Nairn and Dr. Strevett REU 2000

Introduction to the site… Mayer Ranch Volunteer wetland Cattail marsh receiving metal rich mine discharge Two upwelling rich in alkalinity and CO 2 Proposed site for remediation

Introduction to the Experiment… Iron is discharged in reduced form Immediately begins to oxidize Abiotic: oxygen from the atmosphere Biotic: iron oxidizing bacteria Thiobacillus ferrooxidans, Metallogium, Leptothrix Fe +2 + ¼ O 2 + H + = Fe 3+ + ½ H 2 O Fe H 2 O = Fe(OH) 3 (s) + 3H +

What we know… Time Fe+2 Biotic Abiotic

What we don’t know… Which process is dominant Biotic oxidation normally dominates in acid mine drainage Conditions not ideal for bacteria Mayer is net alkaline with neutral pH Why we care Remediation design to enhance natural oxidation process

Our Hypothesis... The dominant iron oxidation process is abiotic

How we wanted to test this… Sample mine drainage as a function of time to measure decrease in ferrous iron Bacteria removed from one microcosm via 0.2  m filter Comparison of iron oxidation rates indication dominant reaction

The field design… Filter Seep Unfiltered Microcosm Filtered Microcosm

The field design… Step 1: pump mine drainage into microcosms (1 filtered to remove bacteria) Step 2: microcosms placed in marsh to keep temperature constant Step 3: samples taken from each at regular intervals (acidified) In-situ measurements to monitor reactions T, Alkalinity, Conductivity, Turbidity, DO, Salinity Performed at both seeps and middle of marsh

Back in the lab… Samples analyzed Ferrous iron concentration Total iron concentration

Back in the lab… This involved… 126 ferrous iron titrations 23 hours hot acid digestions 57 atomic absorption spectrophotometer analysis

Conclusions… Our data supports our hypothesis Abiotic oxidation is dominant Biotic oxidation is minimal Remediation of the site Aeration can drive the reaction to precipitate out the iron

If I knew then what I know now... Contamination is important to prevent Pumping aerates the sample Filter the samples Take an initial sample Avoid long periods without sampling Plan ahead on sleeping arrangements

Acknowledgement… Dr. Nairn

Acknowledgement… Dr. Nairn Dr. Strevett

Acknowledgement… Dr. Nairn Dr. Strevett NSF REU Sharon & Janna Robbins Rebecca Jim Carrie Evenson Jane Sund Erin Breetzke Lisa Hare Todd Wolfard Jake Manko Danette Miller Jessica Brumley

Acknowledgement… Dr. Nairn Dr. Strevett NSF REU Sharon & Janna Robbins Rebecca Jim Carrie Evenson Jane Sund Erin Breetzke Lisa Hare Todd Wolfard Jake Manko Danette Miller Jessica Brumley Kim Wahnee

Acknowledgement… Dr. Nairn Dr. Strevett NSF REU Sharon & Janna Robbins Rebecca Jim Carrie Evenson Jane Sund Erin Breetzke Lisa Hare Todd Wolfard Jake Manko Danette Miller Jessica Brumley Kim Wahnee Emily Spargo

Any Questions?