scholarly journals Hexavalent chromium removal using aerobic activated sludge batch systems added with powdered activated carbon

Water SA ◽  
2009 ◽  
Vol 33 (2) ◽  
Author(s):  
AMF Orozco ◽  
EM Contreras ◽  
NC Bertola ◽  
NE Zaritzky
Keyword(s):  
Activated Carbon ◽  
Activated Sludge ◽  
Hexavalent Chromium ◽  
Powdered Activated Carbon ◽  
Chromium Removal ◽  
Batch Systems

Dynamic response of combined activated sludge-powdered activated carbon batch systems

2010 ◽  
Vol 157 (2-3) ◽  
pp. 331-338 ◽  
Author(s):  
A.M. Ferro Orozco ◽  
E.M. Contreras ◽  
N.E. Zaritzky
Keyword(s):  
Activated Carbon ◽  
Dynamic Response ◽  
Activated Sludge ◽  
Powdered Activated Carbon ◽  
Batch Systems

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.

Comparison of the filtration characteristics between biological powdered activated carbon sludge and activated sludge in submerged membrane bioreactors

Desalination ◽  
2005 ◽  
Vol 174 (3) ◽  
pp. 305-314 ◽  
Author(s):  
Yao-Zhong Li ◽  
Yan-Ling He ◽  
Yong-Hong Liu ◽  
Shu-Cheng Yang ◽  
Guo-Jun Zhang
Keyword(s):  
Activated Carbon ◽  
Activated Sludge ◽  
Membrane Bioreactors ◽  
Powdered Activated Carbon

Chromium removal from flocculation effluent of liquid-phase oil-based drill-cuttings using powdered activated carbon

2007 ◽  
Vol 84 (10) ◽  
pp. 1002-1011 ◽  
Author(s):  
M.J. Ayotamuno ◽  
R.N. Okparanma ◽  
S.O.T. Ogaji ◽  
S.D. Probert
Keyword(s):  
Activated Carbon ◽  
Liquid Phase ◽  
Powdered Activated Carbon ◽  
Chromium Removal ◽  
Drill Cuttings

Biological regeneration of powdered activated carbon added to activated sludge units

1977 ◽  
Vol 11 (5) ◽  
pp. 439-446 ◽  
Author(s):  
Foppe B. DeWalle ◽  
Edward S.K. Chian
Keyword(s):  
Activated Carbon ◽  
Activated Sludge ◽  
Powdered Activated Carbon

Carbonaceous adsorbents from sewage sludge and their application in a combined activated sludge-powdered activated carbon (AS-PAC) treatment

Carbon ◽  
2004 ◽  
Vol 42 (7) ◽  
pp. 1389-1394 ◽  
Author(s):  
M.J. Martin ◽  
E. Serra ◽  
A. Ros ◽  
M.D. Balaguer ◽  
M. Rigola
Keyword(s):  
Activated Carbon ◽  
Sewage Sludge ◽  
Activated Sludge ◽  
Powdered Activated Carbon ◽  
Carbonaceous Adsorbents
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