Oxidation of activated carbon

Wet oxidation of active carbon - desorption of carbon dioxide 19... 

INFLUENCE OF ANODIC OXIDATION OF ACTIVATED CARBON FIBERS ON THE REMOVAL OF HEAVY METAL IN AQUEOUS SOLUTION... 

The preliminary oxidation of active carbon ought to protect the surface from permanent and uncontrollable oxidation during electrochemical processes. Hence both nonmodified and chemically oxidized active carbons were used in our stud-... 

Thus, in situ X-ray diffraction examination shows explicitly that H2O adsorption in graphitic micropores is accompanied by formation of the ordered molecular assembly. The surface oxidation of activated carbon accelerates the cluster formation on the surface and thereby H2O adsorption isotherm has an uptake in the low relative pressure. 

Meldrum, B.J. and Rochester, C.H. (1990). In situ infrared study of the surface oxidation of activated carbons in oxygen and carbon dioxide. Chem. Soc., Faraday Trans., 86, 861-5. 

Harry, I.D., Saha, B., and Cumming, I.W.. Effect of electrochemical oxidation of activated carbon fiber on competitive and noncompetitive sorption of trace toxic metal ions from aqueous solution, J. Colloid Interf. Sci., 304, 9, 2006. 

In Section 2.1 we discussed the adsorption of positively charged complexes of precious metals on the surface of oxidized carbon. The oxidation of activated carbon must be performed cautiously, because severe oxidation leads to complete... 

V. Gomez-Serrano, M. Acedo-Ramos, A.J. Lopez-Peinado, C. Valenzuela-Calahorro, Oxidation of activated carbon by hydrogen peroxide, study of surface functional groups by FT-l.R. Fuel 73 (1994) 387-395. 

J. Jaramillo, P.M. Alvarez, V. Gomez-Serrano, Oxidation of activated carbon by dry and wet methods surface chemistry and textural modifications. Fuel. Process. Technol. 91 (2000) 1768-1775. 

Gomez-Serrano, V., et al.. Oxidation of activated carbon by hydrogen peroxide Study of surface iunctional groups by FT-IR, Fuel. 73(3), 387-396 (1994). 

The oxidation of activated carbons can be divided into two types Gas-phase oxidation and liquid phase oxidation. The gas-phase oxidation is to heat activated carbons at the oxygen-contained inert gas and the most common oxidant is HNO3 in the liquid phase oxidation,the other oxidants include HCl, HCIO, H202, and O3 and so on. The liquid phase oxidation can introduce oxygen-containing functional groups and can remove the ash in activated carbons. The effect of the different oxidation treatment on the activated carbons performances are listed in Table 6.14. ... 

---