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ABSTRACT
Cement LockTM Thermo Chemical Treatment Train
Full-scale Demonstration – Bayonne, NJ (2004-2007) – Passaic River, NJ
Superfund Sediment Cement LockTM Manufacturing Process (2015 Foster Wheeler Design)
Innovative sediment decontamination with beneficial use for end placement after
remedial actions at urban Superfund sites has been of global interest since 2005 when
full-scale ex-situ low and high temperature demonstrations were conducted by the US
Environmental Protection Agency Region 2 (USEPA), the New Jersey Department of
Transportation and Brookhaven National Laboratory. Several independent evaluations of
these technologies by the US Army Corps of Engineers, stakeholders, and Potentially
Responsible Party groups verified their effectiveness and the utility of the applications,
but were not comparable to other placement options at the time. The inclusion of a
thermo-chemical manufacturing process (Cement LockTM) in the 2014 USEPA Passaic
River, New Jersey Focused Feasibility Study and the selection of thermal treatment with
beneficial use in the USEPA 2013 Gowanus Canal, New York Feasibility Study are the
first times a sediment treatment technology have been considered for regional
applications at urban Superfund sediment sites of national importance compared with
Confined Aquatic Disposal, long-distance transport to a landfill and/or incineration - a
recognition that these technologies can increase the net social and environmental benefits
resulting from the action.
Advanced Thermo-Chemical Sediment Decontamination Processing for
United States Urban Superfund Sites VAI
Contact: Eric A. Stern Environmental Adaptive Strategies, LLC
dconman@comcast.net 201. 247. 3281
Eric A. Stern1,2, Eugene Peck3, Michael Mensinger4, Al Hendricks and Robert Fabricant5 , Blake Beckstrom and Don Leavitt6 and Keith W. Jones7 1Environmental Adaptive Strategies, LLC, Montclair, New Jersey, USA; 2Montclair State University, Montclair, NJ; 3Viridian Alliance, Inc, New Haven, Connecticut, USA;
4Gas Technology Institute, Des Plaines, Illinois, USA; 5Volcano Partners, New York; 6Foster Wheeler Corporation, Salt Lake City, Utah, USA; 7Brookhaven National Laboratory, Upton, New York, USA
Metal
TCLP
Limit
(mg/L)
Average
EcoMeltTM
(mg/L)
As 5 0.5 U
Ba 100 1 U
Cd 1 0.0057
Cr 5 0.0108
Co -- 0.05 U
Cu -- 0.0475
Pb 5 0.5 U
Mn -- 0.070
Hg 0.2 0.0002 U
Ni -- 0.0533
Se 1 0.5 U
Ag 5 0.01 U
Zn -- 0.282
TCLP test Results for metals on EcoMeltTM
produced from Passaic River sediment
Compressive Strength Tests with EcoMeltTM
Feed consists of a mixture of de-watered contaminated sediments and modifiers
Main processing unit is a Rotary Kiln melter: Operating temperature of 2400 to 2600o F using
natural gas-fired burners; Feed mixture is thermo-chemically transformed to a lava-like melt;
Organic contaminants are disassociated and destroyed; Inorganic contaminants (heavy metals) are
immobilized and locked within the glassy product matrix; Product is quenched and recovered in a
water bath, then dried and finely ground and used as a partial replacement for Portland cement
(EcoMelt)TM
Flue-gases are further treated in a secondary combustion chamber to ensure destruction of POHCs
Down-stream Air Pollution Control (APC) train controls emissions of hazardous air pollutants such
as HCl, SOx, NOx, fine particulate, and volatile metals
Analyte Campaign Input
Sediment
Product
Ecomelt
Treatment
Efficiency, %
pg/g
PCBs,
Congener
Total
Dec 2006 3,297,502 263 99.991
May 2007 2,217,913 229 99.992
2,3,7,8-
TCDD Dec 2006 968.7 <0.54 >99.969
May 2007 549.5 <1.0 >99.926
TEQ
(D/F+PCB) Dec 2006 1,163.1 1.48 99.855
May 2007 697.2 5.7 99.331
µg/kg
Benzo[a]pyre
ne Dec 2006 845.2 <0.53 >99.965
May 2007 2,015.0 <1.03 >99.971
Naphthalene Dec 2006 49.3 <0.42 >99.514
May 2007 276.5 <1.28 >99.735
mg/kg
Mercury (Hg) Dec 2006 5.23 <0.033 >99.64
May 2007 4.35 0.014 99.73
Sediment Treatment Efficiency
Sustainability Profile:
• Each ton of Ecomelt produced eliminates 1 ton of
CO2 produced by cement manufacturing industry
• Sharply reduces GHG emissions for long distance
transport to landfill
• Uses natural gas for electricity generation
• Eliminates mining and transport of raw materials
for cement production
• Additional offsets may be obtained for other
contaminants such as dioxins on a case-by case
basis
• Processing Costs are significantly below industry norms for thermal treatment
• Costs are off-set by revenues from sale of marketable beneficial use products
• Confirmed Market for EcoMeltTM (Letter of intent to purchase with US Concrete)
• Commercial Scale Plant is feasible for given conditions:
– Minimum dedication of 300,000 to 400,000 cubic yards of “in-situ” contaminated
sediments with a processing fee of $350 to $400 per “in-situ” ton.
– 100,000 to 125,000 tons/year processed (one treatment train) + O2 enhancement
• USEPA projections for disposal costs for out-of-region treatment include more than $650 per
ton for long haul transportation and treatment/landfill disposition of contaminated sediments
Project Cost
NY/NJ Urban Regional Sediment Processing Facility:
The NY/NJ Harbor Perfect Storm
• 6 Mega-site complex Superfund sediment clean ups
all on the same critical path and timelines that will
require treatment of highly contaminated sediments
with a portion that will require thermal treatment
• Co-locate (with other processes) an urban regional
ex-situ thermo-chemical processing facility within
the NY/NJ corridor for treatment and beneficial use
applications - reducing corporate liability compared
to long-haul distance transportation and landfill
placement
EcoMeltTM after quenching Pulverized EcoMeltTM
30-40% replacement for
Portland cement
Poured EcoMeltTM sidewalks
on campus of Montclair State
University, NJ
SLAGGING
ROTARY KILN
(2400 - 26000 F)
FLUE GAS
CLEANUP
(APC)
SECONDARY
COMBUSTION
CHAMBER (SCC)
GRINDING
of
EcoMeltTM
GRANULATION &
DRYING
EcoMeltTM
Generation
FLUE GAS VENT
MAKE-UP
WATER
CONSTRUCTION-
GRADE CEMENT
SLAG
MODIFIERS
SCREENED
SEDIMENT
OFF-SITE PROCESSING
ADDITIVE
Redi-Mix
Plant
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