Calgon process

CADRE A process for removing and oxidizing volatile organic compounds from gas streams. The compounds are adsorbed on a fixed bed of carbon and then desorbed by a stream of hot air or inert gas. Developed by Vard International, a division of Calgon Carbon Corporation. 

Centaur A process for reducing sulfur dioxide emissions from sulfuric acid plants. An activated caibon with both absorptive and catalytic properties is used. The technology uses fixed beds of Centaur carbon to oxidize sulfur dioxide to sulfuric acid in the pores of the carbon. The sulfuric acid is recovered as dilute sulfuric acid, which is used a make-up water in the sulfuric acid production process. Developed by Calgon Carbon Corporation in the 1990s. Calgon Carbon and Monsanto Enviro-Chem operated a Centaur pilot plant at an existing sulfuric acid facility in 1996. 

T0138 Calgon Carbon Corporation, Perox-Pure T0168 CleanSoil, Inc., The CleanSoU Process... 

T0114 Bioremediation Technology Services, Inc., BTS Method T0135 Calgon Carbon Corporation, Activated Carbon T0320 Funderburk Associates, Solidification Process... 

Water Treatment. The source of water for this experiment was a pilot plant located on the Seine River upstream from Paris, France (Figure 1). The pilot plant uses an upflow solids contact clarifier (Pulsator, Degremont, Rueil Malmaison, France) followed by rapid sand filtration (RSF). The filtered water is then distributed over four treatment lines to evaluate the efficiency of various ozone-GAC combinations (ozonation rates of 1 or 5 ppm O3 and 10-30 min of contact time). The GAC used in this study was Calgon F-400 (Calgon Corp.). Disinfection by chlorine or chlorine dioxide completed the process. In this chapter, line 3 treatment was not considered a complete treatment for the water supply. This line was studied to evaluate the efficiency of a high ozonation rate. 

This metaphosphate is used in water treatment in the form of sodium hexametaphosphate [(NaP03)s], which is known by the trade name Calgon, to prevent the precipitation of small quantities of calcium and magnesium salts not removed in the lime-soda process and to dissolve scale that has formed in boilers, water pipes, and so forth. 

Calgon Corporation (Pittsburgh PA) has reported process conditions and results for more than a dozen installations in which GAC adsorbers are u.sed for treating... 

Figure 5.2 A schematic of the Calgon mercury removal process. 1) Amine treating, 2) gas dehydration, 3) removal with GAC, 4) LNG/liquids recovery. Source. [77].

TypeGRC-22. (Calgon Carbon] Granular activated carbon for gold adsoq>-tkm process recovery operations. 

The actin preparations of these authors do actually contain traces of Mg, which are indispensible for the polymerization by alkali salts the process does not occur if Mg is removed by Calgon. Magnesium is not necessary, however, for that part of the polymerization process in which long actin fibers are formed. When G-actin is treated with 2.5 X 10 M Mg++, the viscosity does not change at first, but when this Mg++, together with that originally present, is removed with calgon. 

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