Preparation of accurate multicomponent gas standards of volatile toxic organic compounds in the low-parts-per-billion range

1988 ◽  
Vol 60 (22) ◽  
pp. 2454-2460 ◽  
Author(s):  
George C. Rhoderick ◽  
Walter L. Zielinski
Keyword(s):  
Organic Compounds ◽  
Multicomponent Gas ◽  
Gas Standards ◽  
Toxic Organic Compounds

Fate of Toxic Organic Compounds in Activated Sludge and Integrated PAC Systems

1987 ◽  
Vol 19 (3-4) ◽  
pp. 471-482 ◽  
Author(s):  
W. J. Weber ◽  
B. E. Jones ◽  
L. E. Katz
Keyword(s):  
Activated Carbon ◽  
Activated Sludge ◽  
Organic Compounds ◽  
Powdered Activated Carbon ◽  
Carbon Adsorption ◽  
Powdered Carbon ◽  
Benzene Toluene ◽  
Adsorptive Properties ◽  
Carbon Concentrations ◽  
Toxic Organic Compounds

The addition of powdered activated carbon (PAC) to activated sludge treatment systems to enhance removal of specific toxic organic compounds from wastewater was evaluated. Nine organic compounds encompassing a range of solubility, volatility, biodegradability, and adsorptive properties were studied. Kate and equilibrium investigations were conducted to quantify the removal mechanisms of volatilization, biodegradation, biosorption, and carbon adsorption. Results from steady-state bioreactor studies showed that the addition of less than 100 mg/ℓ powdered activated carbon to the influent did not enhance the removal of the biodegradable target compounds investigated: benzene, toluene, ethylbenzene, o-xylene, chlorobenzene, and nitrobenzene. Significantly improved removals of the poorly degradable and non-biodegradable compounds 1,2-dichlorobenzene, 1,2,4-trichlorobenzene, and lindane occurred at influent powdered carbon concentrations in the 12.5 to 25 mg/ℓ range. Influent powdered carbon concentrations of 100 mg/ℓ effected overall removals of greater than 90%. The addition of powdered activated carbon not only reduced effluent concentrations but also reduced the amounts of the volatile compounds stripped to the atmosphere.

Separation and Preconcentration Methods for the Determination of Highly Toxic Organic Compounds (Poisons)

2021 ◽  
Vol 76 (9) ◽  
pp. 1029-1042
Author(s):  
M. A. Leninskii ◽  
M. D. Shachneva ◽  
E. I. Savel’eva ◽  
N. L. Koryagina
Keyword(s):  
Organic Compounds ◽  
Separation And Preconcentration ◽  
Toxic Organic Compounds

Nanoporous Biochar for Removal of Toxic Organic Compounds from Water

2019 ◽  
pp. 209-224 ◽  
Author(s):  
Yuliya S. Dzyazko ◽  
Olexii V. Palchik ◽  
Vladimir M. Ogenko ◽  
Leon Y. Shtemberg ◽  
Valerii I. Bogomaz ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Toxic Organic Compounds
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