- Product
Waste Solidification Polymer
Waste Lock® 770 is a solid, granular Superabsorbent Polymer (SAP). This cross-linked polyacrylate material swells and absorbs many times its weight in aqueous solutions. Waste Lock® 770 polymers have been engineered to absorb under pressure and have properties that make it ideally suited for the absorption and solidification of low level radioactive waste (LLRW) and other types of industrial waste solidification & stabilization applications.
- Free Swell in DI Water: 400 – 500 X
- Free Swell in 1 % NaCl: 45 – 55 X
- Free Swell in 2 % NaCl: 35 – 40 X
- Free Swell in 10 % NaCl: 19 – 25 X
- Free Swell in 1 % CaCl2: 20 – 25 X
- Free Swell in 8N NaOH: 24 – 30 X
- Tech Sheet_Waste Lock 770
- Absorbency Ratio Calculation
- Cobalt Rad Exposure of Waste Lock granular
- Cobalt 60 Waste Lock Gel Exposure Tests
- Production of Waste Lock 770
- Radiolysis Comparison Graph
- Stability of Waste Lock Polymers in Strong Oxidizing Agents
- Comparison of WASTE LOCK vs Conventional Sorbents
- The Effect of Cations & Conductivity on Super Absorbency
Super Absorbent Product Attributes:
- Reduces Industrial Waste Disposal Costs – Expands in Volume by Less Than 1%.
- Non-Biodegradable Polymer (40 CFR 264.314 (e)(ii))
- Polycarboxylate Polymer Will Not Release Trapped Ionic Contaminants If Solute Evaporation Occurs.
- Strong Ion Exchange Capability Allows For Heavy Metal Binding And For Many Solidified Wastes To Pass TCLP.
- When Used Properly, Waste Sludges Will Pass Paint Filter Test (EPA 9095).
- This Cross Linked Polymer is Duratek Approved for Incineration.
- Freeze-Thaw Tested. The Polymer Will Not Release Free Liquids.
- Polymer Will Excellently Absorb Aqueous Wastes of pH > 4. For Highly Acidic Wastes, Neutralization (pH Adjustment) Is Recommended.
- Approved Sorbent at Hanford (WA) & WIPP (TRUCON Codes)
Waste Lock® Applications:
- Mining applications
- Oil/Gas drilling
- Horizontal Directional Drilling (HDD) & Tunneling
- Vac Truck Waste Solidification
- Biosolids
- Dredging of River, Lake, and Lagoon Sediment
- Unused latex paint
- Industrial waste solidification
- Sludge solidification
- Low level radioactive waste (LLRW)
- The Effect of Cations & Conductivity on Super Absorbency
Liquid Release Test (EPA 9096):
Waste Lock® 770 has the ability to both absorb under pressure and to retain absorbed liquids at high pressures:
- At 25X Hydration, PASSES at 50 psi
- At 10X Hydration, PASSES at 75 psi
- Bulk Density = 5.4 to 6.0 lbs/gallon
Revolutionizing River Dredging with WASTE LOCK® Super Absorbent Polymer
River dredging is a critical process for maintaining the navigability, flood control, and ecological health of river systems. Over time, sediment, silt, and debris accumulate in river channels, reducing water depth, impeding water flow, and affecting aquatic habitats. To address these issues, river dredging involves the removal of this accumulated material using specialized dredging equipment. … Continue reading
| M² Polymer Technologies Inc.
Waste Lock® 770 - FAQs
What is Waste Lock® 770 and how does it differ from conventional sorbents like sawdust or bentonite?
Waste Lock® 770 is a granular, cross-linked sodium polyacrylate superabsorbent polymer (SAP). Unlike conventional sorbents such as bentonite clay, sawdust, or corn cob, which physically capture liquid and can increase waste volume by 50 to 100 percent, Waste Lock® 770 chemically absorbs the aqueous fraction of waste through osmotic swelling. The result is waste volume expansion of less than 1%, dramatically reducing transportation costs and landfill disposal fees for high-cost waste streams.
What types of waste streams is Waste Lock® 770 designed to treat?
Waste Lock® 770 is engineered for the solidification and stabilization of aqueous industrial and environmental waste streams including: low-level radioactive waste (LLRW), hydrovac and hydro-excavation slurry, oil and gas drill cuttings, mining sump pit and tailings fluids, wastewater sludge, contaminated site rinse water, environmental remediation waste, and other water-bearing industrial wastes. It performs well across a wide pH range (absorbs aqueous wastes of pH greater than 4; neutralization is recommended for highly acidic wastes below pH 4).
How much Waste Lock® 770 is needed per volume of waste?
Typical application rates range from 0.5% to 2% by weight of the total waste, depending on the water content and ionic strength of the waste stream. A small bench-scale test is always recommended before full-scale application. Contact M² Polymer Technologies at (847) 836-1393 or info@m2polymer.com for technical guidance and a free consultation on your specific waste chemistry.
Does Waste Lock® 770 pass the EPA Paint Filter Test (Method 9095)?
Yes. When applied at the appropriate rate, Waste Lock® 770-treated waste passes the EPA Paint Filter Test (Method 9095), the standard regulatory requirement for landfill disposal of solidified waste. Solidification typically occurs within 5 minutes of application, compared to 20-60 minutes with conventional sorbents, enabling faster batch processing and lower labor costs.
Is Waste Lock® 770 specifically approved for low-level radioactive waste (LLRW)?
Yes. Waste Lock® 770 has been tested and documented for LLRW solidification applications. It has undergone cobalt-60 radiation exposure testing confirming polymer stability under radioactive conditions, is Duratek-approved for incineration, and meets 10 CFR 61.56 requirements for LLRW solid waste forms. Its strong ion exchange capability binds ionic radionuclides within the polymer matrix.
Will Waste Lock® 770 release absorbed liquids under freeze-thaw conditions or over time in a landfill?
No. Waste Lock® 770 is freeze-thaw tested and retains absorbed liquids through 10 complete freeze-thaw cycles with zero liquid release. As a non-biodegradable polymer listed under 40 CFR 264.314(e)(ii), it will not break down in landfill conditions and will not release bound contaminants or free liquids over time.
How does Waste Lock® 770 handle heavy metals in contaminated waste streams?
The cross-linked polyacrylate chemistry in Waste Lock® 770 provides strong ion exchange properties. This enables the polymer to bind soluble heavy metal ions — such as lead, cadmium, and chromium — within the polymer matrix rather than simply trapping them in absorbed water. As a result, many solidified wastes treated with Waste Lock® 770 pass the EPA Toxicity Characteristic Leaching Procedure (TCLP), demonstrating that bound heavy metals are not readily leachable under landfill disposal conditions.
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