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Partitioning chromium

Kobrin G, Tatnall RE (1993) Introduction a practical manual on microbiological influenced corrosion. NACE International, Houston, pp 68-72 Koenig DW, Mishra SK, Pierson DL (1995) Removal of Burkholderia Cepacia biofilms with oxidants. Biofouling 9 51-62 Kong K, Johnstone DL, Yonge DR, Petersen JN, Brouns TM (1994) Long-term intracellular chromium partitioning with subsurface bacteria. Appl Microbiol Biotechnol 42 403 07... [Pg.335]

Coprecipitation is a partitioning process whereby toxic heavy metals precipitate from the aqueous phase even if the equilibrium solubility has not been exceeded. This process occurs when heavy metals are incorporated into the structure of silicon, aluminum, and iron oxides when these latter compounds precipitate out of solution. Iron hydroxide collects more toxic heavy metals (chromium, nickel, arsenic, selenium, cadmium, and thorium) during precipitation than aluminum hydroxide.38 Coprecipitation is considered to effectively remove trace amounts of lead and chromium from solution in injected wastes at New Johnsonville, Tennessee.39 Coprecipitation with carbonate minerals may be an important mechanism for dealing with cobalt, lead, zinc, and cadmium. [Pg.796]

Sterling Jr MC, Bonner JS, Page CA, Ernest ANS, Autenrieth RL (2003) Partitioning of crude oil polycyclic aromatic hydrocarbons in aquatic systems. Environ Sci Technol 37 4429-4434 Stern O (1924) Zur theorie der elecktrolytischen doppelschict. Z Electrochem 30 508-516 Stollenwerk KC, Grove DB (1985) Adsorption and desorption of hexavalent chromium in an alluvial aquifer near Telluride, Colorado. J Environ Qual 14 150-155 Stumm W, Morgan JJ (1996) Aquatic chemistry, 3rd edn. WUey, New York... [Pg.393]

Huebner I S., Lipin B. R., and Wiggins L. B. (1976). Partitioning of chromium between silicate crystal and melts. Proc. Seventh Lunar Scl Conf, 1195-1220. [Pg.837]

Bums, R. G. (1975b) Crystal field effects in chromium and its partitioning in the mantle. Geochim. Cosmochim. Acta, 39,857-64. [Pg.483]

Kitchalong L, Fernandez JM, Bunting LD, et al. 1995. Influence of chromium tipicolinate on glucose metabolism and nutrient partitioning in growing lambs. J Anim Sci 73 2694-2705. [Pg.432]

The partition coefficients for these chelates have been determined by static methods and found to be as follows beryllium, 4.4 chromium, 16.1 ruthenium, 23.2 and cobalt, 33.5. [Pg.151]

The segregation ratio, I, and partition ratios of chromium and nickel in the stainless and heat resistant steels are shown in figures 6.12 and 6.13. These ratios were defined in chapter 1 as follows ... [Pg.146]

Figure 6.13 Partition ratios for chromium and nickel in stainless and heat resistant steels. Figure 6.13 Partition ratios for chromium and nickel in stainless and heat resistant steels.
Figure 4 Metal/magnesiowUstite partition coefficients for nickel, cobalt, manganese, chromium, and vanadium at 9 GPa, and the effect of temperature (pressure 9 GPa). Partition coefficients are calculated relative to iron, according to the exchange equihhrium, M - - FeO = Fe + MO. Horizontal lines at right side of the diagram indicate the values of ATd that would he required for an equihhrium explanation for these hve elements in the terrestrial mantle (source Gessmann and Ruhie (1998) these authors favor a high-temperature scenario to attain these concentrations in the mantle). Figure 4 Metal/magnesiowUstite partition coefficients for nickel, cobalt, manganese, chromium, and vanadium at 9 GPa, and the effect of temperature (pressure 9 GPa). Partition coefficients are calculated relative to iron, according to the exchange equihhrium, M - - FeO = Fe + MO. Horizontal lines at right side of the diagram indicate the values of ATd that would he required for an equihhrium explanation for these hve elements in the terrestrial mantle (source Gessmann and Ruhie (1998) these authors favor a high-temperature scenario to attain these concentrations in the mantle).
Gessmann C. K. and Rubie D. C. (1998) The effect of temperature on the partitioning of nickel, cobalt, manganese, chromium and vanadium at 9 GPa and constraints on formation of the Earth s core. Geochim. Cosmochim. Acta 62, 867-882. [Pg.1146]

US Environmental Protection Agency (EPA) (1999b) Understanding variation in partition coefficient, Kd, values Volume II. Review of geochemistry and available Kd values for cadmium, cesium, chromium, lead, plutonium, radon, strontium, thorium, tritium (3H) and uranium. Prepared for the EPA by Pacific Northwest National Laboratory. [Pg.4802]

The majority of the metallic impurities originally present in the phosphate rock, such as iron, aluminum, magnesium, zinc, lead, cadmium, manganese, nickel, chromium, vanadium, mercury, and arsenic, are acid-soluble, and these become partitioned between the WPA (80%) and the solid waste gypsum (20%) during the acidulation step. Consequently, some portion of these metallic impurities also is found in phosphate fluid... [Pg.147]

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See also in sourсe #XX -- [ Pg.396 , Pg.433 , Pg.434 , Pg.436 ]



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