Trace analysis of toxic organic compounds in air by crystal sorption detector and electrochemical methods

1984 ◽  
Author(s):  
Tai-wai, David Ting
Keyword(s):  
Organic Compounds ◽  
Trace Analysis ◽  
Electrochemical Methods ◽  
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.

scholarly journals Green electrochemistry. Examples and challenges

2001 ◽  
Vol 73 (8) ◽  
pp. 1305-1308 ◽  
Author(s):  
Michael A. Matthews
Keyword(s):  
Organic Compounds ◽  
Environmentally Friendly ◽  
Electrochemical Methods ◽  
Chemical Production ◽  
Ongoing Research ◽  
Chemical Manufacturing

Electrochemical methods have been proposed for synthesis of organic compounds, including conversion of CO2. Such methods may provide a basis for environmentally friendly and sustainable methods for chemical production. Nevertheless, electrochemical syntheses are not widely utilized. Several examples of ongoing research are presented that illustrate both the opportunities as well as the challenges associated with the utilization of electrochemistry for green chemical manufacturing.

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

Trace analysis of organic compounds

1978 ◽  
Vol 50 (2) ◽  
pp. 87-95 ◽  
Author(s):  
Klaus Beyermann
Keyword(s):  
Organic Compounds ◽  
Trace Analysis
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