ada technologies, inc. stabilization of mercury and mercury containing waste cliff brown / tom...
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ADA Technologies, Inc.
Stabilization of Mercury and Mercury Containing Waste
Cliff Brown / Tom BroderickADA Technologies, Inc.
Carl RaganPerma-Fix Environmental Services, Inc.
Breaking the Mercury Cycle: Long Term Management of Surplus, Recycled Mercury & Mercury Bearing Waste
Boston, MA May 1-3, 2002
ADA Technologies, Inc.
Presentation Outline
Regulatory Framework
Background & Related Work
Elemental Mercury Treatment
>260 mg/kg Waste Treatment
Summary
ADA Technologies, Inc.
Two Classes of Mercury Contaminated Waste to be
AddressedMercury Content
<260 mg/kg >260 mg/kg Elemental
Must passTCLP
Treatment Standard= Retort & Amalgamation
Of Condensates
Candidate for Direct Stabilization
Treatment Standard= Amalgamation
Focus for Presentation
ADA Technologies, Inc.
ADA Mercury Control Technologies
Technology Gas Liquid
Solid
Disposable sorbent XX XRegenerable sorbent XX XXPhotocatalyst XAmalg./Stabilization X X+Red: Current Research & Development Project Blue: Pilot DemonstrationGreen: Commercial Product
Media
ADA Technologies, Inc.
Mercury Related Work Ongoing at ADA since 1992
System: 10ft3 mix skid designed, constructed &
installed jointly by ADA and Perma-Fix
Technology Licensed to Perma-Fix 2001
MER-01 DOE Contract
U.S. Patent 09/258,659ADA Internal FundsElemental Hg
Waste Funding Vehicle Products
ADA Technologies, Inc.
Mercury Related Work Ongoing at ADA since 1992
(cont.)
Application for Variance to be submitted to U.S. EPA
Implementation in 90 ft 3
mixer initially for Storm Sewer Sediment – Normally run >5 ft 3
MER-04
Technology to be licensed to Perma-Fix
Internal ADA and Perma-Fix Funds
U.S. Patent PendingDOE SBIR
(DE-FG03-99ER82722)
>260 ppm Hg
Waste Funding Vehicle Products
ADA Technologies, Inc.
Elemental Mercury Stabilization
ADA Technologies, Inc.
Hg0 Stabilization Produces Three Potential Products
Elemental Hg
Reagents& Mixing
Primary Product
Patented Process
Processing System Installed atPerma-Fix M&EC Facility
(Addressed in following slides)
continued
#1
ADA Technologies, Inc.
Hg0 Stabilization Produces Three Potential
Products (cont.)Reagents& Processing
Micro-encapsulatedProduct
Reagents & Processing
Advanced Leach Testing
Activity Conducted with
EPA, DOE, University of
Cincinnati
continued
Macro-encapsulatedProduct
#2
#3
ADA Technologies, Inc.
Hg0 Stabilization Unit Designed and Installed at
Perma-Fix Facility Design, construction, acceptance testing
in Denver - Shipped Jan. ‘02
System installed and proof tested at M&EC facility in Oak Ridge - March ‘02
First waste to be processed in May ’02
TDEC approved permit modification at Perma-Fix
ADA Technologies, Inc.
Process is Based on ADA Patent;Meeting Treatment Goals is “Art”
ADA Technologies, Inc.
Mercury Treatment
Skid Installed at
Perma-Fix M&EC
Facility
Oak Ridge, TN
ADA Technologies, Inc.
Operation produces a free- flowing product
(Avg. Diam. 3/8”)
ADA Technologies, Inc.
Summary of Results
Analytical LANL Waste Fernald Waste Demo Run
Test Results Results #1 Results
Mercury (TCLP) 0.048 mg/L 0.039 mg/L 0.016 mg/L
Free Liquid by no free liquids no free liquids no free liquidsPaint Filter
pH, Saturated 8.2 11.9 10.2Paste
Cyanide, total Non-detect Non-detect Non-detect
Sulfide, reactive 0.3 mg/kg 52 mg/kg --
Mercury Vapor <0.050 <0.050 <0.050Conc. (mg/m
3)
ADA Technologies, Inc.
Summary
Patented process produces mercury sulfide that meets the TCLP limit for mercury
If the cost/benefit exists, process can be tailored to produce waste form with increased pH stability
Process equipment is installed and ready for operation
Perma-Fix operators have been trained to run equipment
ADA personnel will be at Perma-Fix for first elemental mercury treatment run this spring
ADA Technologies, Inc.
Treatment of >260 ppmMercury Material
ADA Technologies, Inc.
Mercury Stabilization for Granular Matrices with >260 ppm Mercury Contamination Significant modification of process for
elemental mercury Multiple funding sources Process demonstrated with wide variety of
materials– Surrogate sludges with / without iron– Surrogate soils spiked with Ba, Cr, Cu, Pb– Storm Sewer Sediment (BSSS)
Must be fine-tuned to specific contents of waste stream
ADA Technologies, Inc.
Stabilization of Oak Ridge Storm Sewer Sediment
BSSS inventory in Oak Ridge approximately 235,000 kg; much of this contaminated with mercury
Variance being pursued to treat this material via direct stabilization
Treatability studies have verified treatment approach
ADA Technologies, Inc.
Characterization of BSSS
HazardousConstituent
AverageConc. (ppm)
Total Organic Carbon 21,000
PCB (Total) 20
Cyanide (Total) 0.1
Mercury 14,600 *
* Highest Mercury Conc. Detected, 55,900 ppm
ADA Technologies, Inc.
Characterization of BSSS (cont.)
Extraction Total Hg HgSolvent (%w/w) Species
Water 1.50% HgCl2, HgNO3
Methanol 0.20% OrganomercuryConc. HCl 81.80% HgO, HgSO4
Conc. HNO3 16.50% Hgo, HgS, Hg2SO4
ADA Technologies, Inc.
Process Summary
Four step process:• Pretreatment• Sulfurization• Neutralization• Granulation
Test matrix evaluated:• Reagent cocktail composition• Reducing agents• Neutralizing agents
ADA Technologies, Inc.
BSSS-1 Lab Mixer & Samples
Before
After
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Treatability Study Results
ADA Technologies, Inc.
Planned Operation at Perma-Fix
ADA Technologies, Inc.
BSSS-1 Full-Scale Mixer
at M&EC
ADA Technologies, Inc.
Conclusions & Path Forward
Treatability study has identified formulation that meets Hg UTS (0.025 mg/L)
Finish testing alternate treatment recipes
Finalize treatment protocol and variance application
Submit application to U.S. EPA for approval
Install full-scale treatment equipment
Start scale-up mixes w/ surrogate material
Start treatment of BSSS-1 material in 2002