Calgon

Polyphosphates are used as detergents (calgon) but disposal of the residual phosphate causes major problems Phosphates are of importance as flame-proofing agents. See also phosphorus. 

Property Manufacturer Calgon Coal Norit Peat Westvaco Calgon Norit Peat Westvaco Wood... 

The estimated production capacity of activated carbon in the United States is shown in Table 3 for seven manufacturers (41). The principal producers are Calgon Carbon (37%), American-Norit (26%), Westvaco (19%), and Atochem (10%). Several other companies purchase activated carbon for resale but do not manufacture products. 

Western Europe has seven manufacturers of activated carbon. The two largest, Norit and Chemviron (a subsidiary of Calgon), account for 70% of West European production capacity, and Ceca accounts for 13% (42). Japan is the third largest producer of activated carbon, having 18 manufacturers, but four companies share over 50% of the total Japanese capacity (43). Six Pacific Rim countries account for the balance of the world production capacity of activated carbon, 90% of which is in the Philippines and Sri Lanka (42). As is the case with other businesses, regional markets for activated carbon products have become international, lea ding to consoHdation of manufacturers. Calgon, Norit, Ceca, and Sutcliffe-Speakman are examples of multinational companies. 

Product data bulletins from activated carbon manufacturers, Calgon Carbon Corp., 1990, American Norit Co., 1990, and Westvaco Corp., 1988. 

Product hterature on Pittsburgh activated carbon, Pittsburgh Coke Chemical Co. (now Calgon Carbon Corp.), Pittsburgh, Pa., ca 1960. 

Wertheim Schroder, Calgon Carbon Corp., Company Report No. 955346, Mar. 19, 1990. 

Manufaclurcr Calgon Norit Westvaeo Calgon Norit Westvaeo... 

Table 1. Surface Treatment of Calgon BPL Carbon with Nitric Acid...

Calgon Corporation, Robinson Township, PA, U.S.A. New Zealand Patent No. 236229. 

Also introduced was sodium metaphosphate [Hagan phosphate or Calgon , represented at the time by the formula (NaP03)6, although it tends to have a different formula today]. 

N,N-diethylhydroxylamine [(C2H5)2NOH] has a MW of 89.1 and a sp. gr. of 0.902. It is typically supplied as an 85% hygroscopic, corrosive yellow liquid, such as Pennstop 85% from Elf Atochem, and is also present in many diluted or blended product forms, such as Dearborn Neutrox 53 (30% DEHA and 3% hydroquinone) and Calgon RB-304 (17.5% DEHA and 7.5% hydroquinone). Japan is a major supplier of DEHA. 

NOTE Application patents for the use of erythorbates in BW were instituted by Nalco, Betz, and Calgon. The fact that three water treatment patents were issued for essentially the same product application shows the ease of finding alternative application protocols within the industry. 

Catalysts were prepared on various supports. One example was a Calgon 120% CTC coconut carbon. The impregnation volume of metal solution was calculated using the measured incipient wetness of the support 0.85 cc liquid per gram of carbon for the... 

Methods for disposing of diisopropyl methylphosphonate include microwave decomposition, ultraviolet and infrared laser-induced photodestruction, chemical oxidation coupled with ultraviolet radiation catalyzation, and adsorption using granular activated carbon (Bailin et al. 1975 Calgon 1977 ... 

Water Extract with methylene chloride, filter through anhydrous sodium sulfate, evaporate, concentrate GC/MS No data No data Calgon 1977... 

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