Sorbents used in the environment should be environmentally benign. A standard test of potential environmental harm is the Toxicity Characteristics Leachate Procedure (TCLP test) which measures the concentration of chemicals of concern released into the environment from solid substances.
Method
Adsorb-it sorbent material was submitted to an analytical laboratory with NELAP (National Environmental Laboratory Accreditation Program) accreditation for the full suite of TCLP analyses. The results of the tests are summarized below.
Results
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Volatile Organic Compounds (VOCs) / EPA Method 1311 / 8260B
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Result
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Detection Limit
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Units
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Maximum
Contaminant Level
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ND*
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0.2
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mg/L
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0.2
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ND*
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0.2
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mg/L
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0.7
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ND*
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1
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mg/L
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200
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ND*
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0.2
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mg/L
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6.0
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ND*
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0.2
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mg/L
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0.5
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ND*
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0.2
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mg/L
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0.5
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ND*
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0.2
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mg/L
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0.5
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ND*
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0.2
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mg/L
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0.5
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ND*
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0.2
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mg/L
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0.7
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ND*
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0.2
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mg/L
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100
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*ND – not detected at or above the method detection limit
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RCRA Metals / EPA Method 1311 / 6010 / 7470
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Result
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Detection Limit
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Units
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Maximum
Contaminant Level
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ND*
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0.2
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mg/L
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5.0
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0.25
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0.005
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mg/L
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100
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ND*
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0.05
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mg/L
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1.0
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ND*
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0.01
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mg/L
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5.0
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ND*
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0.1
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mg/L
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5.0
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ND*
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0.5
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mg/L
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1.0
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ND*
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0.2
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mg/L
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5.0
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ND*
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0.002
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mg/L
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0.2
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*ND – not detected at or above the method detection limit
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Chlorinated Pesticides / EPA Method 1311 / 8081
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Result
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Detection Limit
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Units
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Maximum
Contaminant Level
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ND*
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0.001
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mg/L
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0.4
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ND*
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0.001
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mg/L
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0.008
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ND*
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0.001
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mg/L
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0.008
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ND*
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0.002
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mg/L
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0.02
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ND*
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0.01
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mg/L
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10
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ND*
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0.01
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mg/L
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0.03
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ND*
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0.1
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mg/L
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0.5
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*ND – not detected at or above the method detection limit
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Chlorinated Herbicides / EPA Method 1311 / 8151
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Result
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Detection Limit
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Units
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Maximum
Contaminant Level
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ND*
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0.001
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mg/L
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10
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ND*
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0.001
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mg/L
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1.0
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*ND – not detected at or above the method detection limit
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Semivolatile Organic Compounds/ EPA Method 1311 / 8270C
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Result
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Detection Limit
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Units
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Maximum
Contaminant Level
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ND*
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0.005
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mg/L
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7.5
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ND*
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0.005
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mg/L
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200
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ND*
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0.005
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mg/L
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200
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ND*
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0.005
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mg/L
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3.0
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ND*
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0.005
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mg/L
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2.0
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ND*
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0.005
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mg/L
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0.5
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|
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ND*
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0.005
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mg/L
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2.0
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ND*
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0.005
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mg/L
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400
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ND*
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0.005
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mg/L
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0.13
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ND*
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0.005
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mg/L
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0.13
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ND*
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0.005
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mg/L
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100
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ND*
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0.005
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mg/L
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5.0
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*ND – not detected at or above the method detection limit
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| Conclusions
All parameters were well below the limits required by the test, showing that the Adsorb-it sorbent material does not contribute to pollution of the environment.
Residual Ash and Heating Value
Samples of the Adsorb-it sorbent material were tested to determine the residue and the heating value.The ash was determined to be 0.65% by ASTM method D482 and the heating value was determined to be 7600 BTU/lb by ASTM method D240.
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