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Adsorb-it® Sorbent’s Impact on the Environment

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

Volatile Organic Compounds (VOCs) / EPA Method 1311 / 8260B

Parameter
Result
Detection Limit
Units
Maximum
Contaminant Level
Vinyl Chloride
ND*
0.2
mg/L
0.2
1,1-Dichloroethene
ND*
0.2
mg/L
0.7
2-Butanone
ND*
1
mg/L
200
Chloroform
ND*
0.2
mg/L
6.0
Carbon Tetrachloride
ND*
0.2
mg/L
0.5
Benzene
ND*
0.2
mg/L
0.5
1,2-Dichloroethane
ND*
0.2
mg/L
0.5
Trichloroethene
ND*
0.2
mg/L
0.5
Tetrachloroethene
ND*
0.2
mg/L
0.7
Chlorobenzene
ND*
0.2
mg/L
100

*ND – not detected at or above the method detection limit

RCRA Metals / EPA Method 1311 / 6010 / 7470

Parameter
Result
Detection Limit
Units
Maximum
Contaminant Level
Arsenic
ND*
0.2
mg/L
5.0
Barium
0.25
0.005
mg/L
100
Cadmium
ND*
0.05
mg/L
1.0
Chromium
ND*
0.01
mg/L
5.0
Lead
ND*
0.1
mg/L
5.0
Selenium
ND*
0.5
mg/L
1.0
Silver
ND*
0.2
mg/L
5.0
Mercury
ND*
0.002
mg/L
0.2

*ND – not detected at or above the method detection limit

Chlorinated Pesticides / EPA Method 1311 / 8081

Parameter
Result
Detection Limit
Units
Maximum
Contaminant Level
gamma-BHC (Lindane)
ND*
0.001
mg/L
0.4
Heptachlor
ND*
0.001
mg/L
0.008
Heptachlor epoxide
ND*
0.001
mg/L
0.008
Endrin
ND*
0.002
mg/L
0.02
Methoxychlor
ND*
0.01
mg/L
10
Chlordane (technical)
ND*
0.01
mg/L
0.03
Toxaphene
ND*
0.1
mg/L
0.5

*ND – not detected at or above the method detection limit

Semivolatile Organic Compounds/ EPA Method 1311 / 8270C

Parameter
Result
Detection Limit
Units
Maximum
Contaminant Level
1,4-Dichlorobenzene
ND*
0.005
mg/L
7.5
2-Methylphenol
ND*
0.005
mg/L
200
3- & 4-Methylphenol
ND*
0.005
mg/L
200
Hexachloroethane
ND*
0.005
mg/L
3.0
Nitrobenzene
ND*
0.005
mg/L
2.0
Hexachlorobutadiene
ND*
0.005
mg/L
0.5
2,4,6-Trichlorophenol
ND*
0.005
mg/L
2.0
2,4,5-Trichlorophenol
ND*
0.005
mg/L
400
2,4-Dinitrotoluene
ND*
0.005
mg/L
0.13
Hexachlorobenzene
ND*
0.005
mg/L
0.13
Pentachlorophenol
ND*
0.005
mg/L
100
Pyridine
ND*
0.005
mg/L
5.0

*ND – not detected at or above the method detection limit

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.