As and Cr Speciation of New & Weathered CCA-Treated Wood.

Slides:

Advertisements

Similar presentations

Speciation of Chromium. Research Project: Assessing the Impact of Chromium in the Environment Funding provided by Florida Department of Environmental.

Advertisements

Research on the Speciation of Chromium as Relates to CCA.

Lysimeter Study Simulate landfill disposal of CCA 6 PVC Columns 22 feet high, 1-Foot diameter Natural Precipitation infiltrates through a cap and creates.

Brief Review of “Leaching and Toxicity of CCA-Treated and Alternative- Treated Wood Products.

The Arsenic Rule Waste Disposal Options. Impacts on Disposal Alternatives Concentration of contaminants in the waste stream Concentration of contaminants.

MINING. Overview StepsDescriptionEnvironmental Effects MiningRemoving mineral resources from the ground Mine wastes – acids and toxins Displacement of.

K d values of Cu, Cr, As in different soil matrix 1 Sung-Mo Kang, 2 Seung-Hun Shin, 1 Ja-Oon Koo ( 1 Korea Forest Research Institute, 2 Dong-Yang Timber.

Disposal Strategies for CCA-Treated Wood August 13, 2003 National RCRA Conference Washington D.C.

Review of Chromium Speciation Research. Research Project: Assessing the Impact of Chromium in the Environment Assessing the Impact of Chromium in the.

LDEQ’s RECAP Soil Protective of Groundwater - Soil GW Soil Saturation - Soil sat.

Arsenic Speciation of Runoff from CCA-Treated Decks.

US Army Corps of Engineers BUILDING STRONG ® Geochemistry Breakout Session Drs Anthony Bednar, Roy Sidle, and Carol Babyak 12 March 2010.

LABORATORY METHODS for LEACHATE ANALYSIS RESULTS Temporal and cumulative metal leaching mass. Cumulative leaching (per ha) in control treatments were:

Conductivity Total Dissolved Solids WQT 134 Aquatic Chemistry II Standard Methods 20 th ed #2510 Conductivity.

Arsenic Leaching From Mulch Made from Recycled C&D Wood Arsenic Leaching From Mulch Made from Recycled C&D Wood a 1 Tomoyuki Shibata, 1 Helena Solo-Gabriele,

Funded through Florida International University National Institute for Environmental Health Sciences Impacts from CCA-Treated Wood Within Marine and Terrestrial.

Mandatory Pollution Prevention: A Record of Success Presentation to the First Joint Pollution Prevention and Environmental Essentials Conference August.

Evaluation of Florida C&D Debris Groundwater Monitoring Data Presentation discusses: Results of analysis of groundwater monitoring data Results of groundwater.

Metals Speciation as a Tool for Addressing Environmental Issues Michelle Briscoe President/CEO, Brooks Rand Labs

Year 4 Research Fate of CCA-Treated Wood n Evaluate Fate of Wood Treated With Preservative Chemicals ä Evaluate CCA- and alternative-chemical- treated.

Retardance of Rainwater-Leached Metals in Amended Soil Systems: A Case Study John D. Harden, P.G., Ph.D. Robert E. Pitt, P.E., Ph.D., BCEE, D.WRE Department.

Chromium In the Aquatic Environment Polina Liberman Sarah Schmidt June 7, 2002.

Arsenic Speciation - Year 4/5 Bernine Khan University of Miami Dept. of Civil, Architectural & Environmental Engineering July 9th, 2001.

History of Research Project on CCA-Treated Wood Presented August 18, 2005 TAG Meeting.

Arsenic Speciation of CCA-Treated Wood Bernine Khan University of Miami May 6th, 2002.

Year 5 Research CCA-Treated Wood: Evaluating Toxicity During Disposal (Recently Funded)

Comparison of Environmental Impacts of Wood Treated with Three Different Arsenic-Free Preservatives and CCA CCA-TAG Meeting B. Dubey 1, T. Townsend 1,

Prepared by: Gary Jacobi Extent of CCA Treated Wood in Consumer Mulches and Methods of Detection.

: Heavy Metal Contamination in Highway Marking Glass Beads NJDOT Research Study: Heavy Metal Contamination in Highway Marking Glass Beads Conducted by:

ARSENIC DETECTIONS IN GROUNDWATER AT C&D FACILITIES FDEP CCA TAG GW Subcommittee Steve Clarke, Chair - WM.

Supplemental Study for Year 3 Project Completed. Reason for Supplemental Study  Accelerate new lines of research which were identified in August 1999.

Impact of Arsenic from CCA-Treated Wood in Marine and Terrestrial Environments A Collaborative Research between FIU and UM Supported by NIEHS-ARCH Program.

Arsenic speciation in Soil and Sediment Myron Georgiadis Florida International University TAG Meeting January 10, 2003.

Field Scale Deck Study 1 Tomoyuki Shibata, 1 Helena M. Solo-Gabriele, 2 Young Cai, and 3 Timothy Townsend 1 University of Miami, 2 Florida International.

History of Research Project on CCA-Treated Wood Presented January 10, 2003 Coral Gables, Florida.

Quantities of As in Florida. Purpose Determine the relative magnitude of arsenic from CCA-treated wood versus the amounts from other arsenic sources Determine.

Sorting Technologies for CCA Treated Wood. Objective To design and implement an automated system to effectively sort CCA treated wood from other wood.

Funded through Florida International University National Institute for Environmental Health Sciences Impacts from CCA-Treated Wood Within Marine and Terrestrial.

History of Research Project on CCA-Treated Wood Presented January 11, 2001 Coral Gables, Florida.

U. S. Environmental Protection Agency

Leaching of Alternative Chemical Treated Wood & Aquatic Toxicity of Alternative Chemical Treated Wood Leachates Update: July 9, 2001.

Arsenic Mass Balance: Florida. Purpose  Determine the relative magnitude of arsenic from CCA-treated wood versus the amounts from other arsenic sources.

History of Research Project on CCA-Treated Wood Presented May 6, 2002 Gainesville, Florida.

2002 Arsenic Analysis of Groundwater at Florida C&D Landfills Bernine Khan University of Miami.

History of Research Project on CCA-Treated Wood Presented October 22, 2004 TAG Meeting.

Bernine Khan University of Miami Arsenic Speciation of New & Weathered CCA-Treated Wood.

Year “7” and Year “8” Studies Focusing on Mulch. Early research has shown that mulches made from recycled dimensional wood can be contaminated with CCA.

Arsenic speciation in Soils and Sediment Myron Georgiadis Florida International University TAG Meeting February 11, 2004.

Leaching of Alternative Chemical Treated Wood and Aquatic Toxicity of Alternative Chemical Treated Wood Leachates.

History of Research Project on CCA-Treated Wood Presented February 11, 2004 TAG Meeting.

Presentation for Office of Surface Mines on Potential Use of the Leaching Environmental Assessment Framework to enhance source terms for use of CCRs in.

Professor: 莊順興 Presenter: 李謙詳 2016/01/04. * Unlike physical separation processes that merely concentrate or change the phase of hazardous wastes. * chemical.

On-site, laboratory-grade, rapid-response testing

Research Centre for Toxic Compounds in the Environment

Extent of CCA-Treated Wood Used for Commercial Mulch

History of Research Project on CCA-Treated Wood Presented July 28, 2000 Florida Dept. of Environmental Protection Tallahassee, Florida.

Arsenic Leaching from Disposed CCA-Treated Wood

Hydride Generation–AFS for Arsenic Speciation in Food

Management and Disposal Options for CCA-Treated Wood Waste

Resource Conservation and Recovery Act (RCRA)

Year “7” and Year “8” Studies Focusing on Mulch

Lysimeter Study Approach

Olga Ogburn Background

Groundwater Analysis From Florida C&D Landfills

Effects of phosphate rock and iron-oxide on immobilization of lead and arsenic in Florida shooting range soils U. Saha, A. Fayiga, A. Wang, L.Q. Ma, and.

FAQs for Evaluating the Soil-to-Groundwater Pathway

HAZARDOUS WASTE.

Soil review Complexity of soils Intensity and capacity concepts

Arsenic Leaching out from CCA Contaminated Mulch

Fayiga Abioye, Uttam Saha, and Lena Q Ma

Presentation transcript:

As and Cr Speciation of New & Weathered CCA-Treated Wood

Purpose Basic As and Cr Chemistry Solvent-Extraction Leaching Experiments (Cr & As) As Analysis of GW at Florida C&D Landfills As Leaching from Lysimeters Outline

Quantify As & Cr species in leachates from CCA-treated wood As & Cr toxicity varies with each specie As & Cr mobility varies with each specie Estimate the impact of As & Cr leaching from in-service & disposed CCA-treated wood on groundwater Purpose & Motivation of Study

As Speciation Arsenic As(III) As(V)MMAADMAA Inorganic Organic Valence Inorganic Arsine (g)

Arsenic As(III) As(V)MMAADMAA Inorganic Organic Valence Inorganic Arsine (g) As Speciation Toxicity & Mobility

Arsenic As(III) As(V)MMAADMAA Inorganic Organic Valence Inorganic Arsine (g) As Speciation Toxicity & Mobility

Cr Speciation Chromium Cr(VI)Cr(III) Inorganic Valence Inorganic Cr Speciation Toxicity & Mobility

Analytical Methods for Speciation As: HPLC-ICP-MS or HPLC-HG-AFS Cr: IC for Cr(VI) Total Cr by ICP-AES Cr(III) by difference

Solvent Extraction Study

CCA-treated wood subjected to leaching solvent, rotated for 18  2 hrs & filtered. Filtrate analyzed for As & Cr species New CCA-treated wood TCLP SPLP DI Water Rainwater Untreated 0.25 pcf 0.6 pcf 2.5 pcf Weathered CCA-treated wood Playground Utility pole Fence C&D waste Solvent-Extraction of CCA-Treated Wood pH 1,2,3. etc..

pH Experiment - New Wood (0.32 pcf) As(V) was the only specie detected Highest concentration at extreme pH Environmental pH range ~ 5mg/L Total As (As(V)) – HPLC-HG-AFS Total As – ICP-AES Environmental pH

pH Experiment - Weathered Wood (0.41 pcf) As(III) & As(V) detected, As(III) up to pH 9.5 Environmental pH range – Total As increase Total As > 5 mg/L pH Arsenic Concentration (mg/L) Environmental pH As(III) As(V) Total As - HPLC-HG-AFS Total As – ICP-AES

J (46.01) L (27.54) H (24.57) K (20.37) G (13.03) I (9.12) D (5.90)C (5.63) B (4.06) E (3.86) F (3.62) A (1.49) M (24.05) N (6.26)Q (5.79)O (5.28) R (5.47) S (3.16)P (1.96) V (1.86) T (1.41) SPLP Arsenic Concentration (mg/L) As(III) As(V) Total As Retention (kg/m 3 ) New Weathered SPLP New & Weathered Wood (Simulated Rain Water)

Leachate As Conc. vs CCA Retention kg/m 3 New Weathered Total As Conc. (mg/L) Total As Conc. (mg/L) SPLP Rainwater TCLP DI Water Seawater

Environmental pH pH Experiment - New Wood (0.32 pcf) Cr(III) predominates Cr(VI) observed at high pH values

Unburned wood Cr as Cr(III) No Cr(VI) observed SPLP New & Weathered Wood (Simulated Rain Water)

Ashing results in converstion of Cr(III) to Cr(VI) Cr in ash leachate exists as Cr(VI) Ash – SPLP and TCLP

Ash Results for Chromium Low Retention Level Wood Leaches More Cr

As & Cr species leaching pH dependent At environmental pH range (6-10) - As ~ 5mg/L - Cr ~ 1 mg/L More As leaching from weathered wood than new wood  As(III) As Leaching in rainwater, TCLP, SPLP comparable. Seawater less. Incineration results in the conversion of some Cr(III) to Cr(VI). Greater conversion for lower retention levels. Summary

? ? Questions ?