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Sulfate water

Examples 3CdS04 8H2O, cadmium sulfate—water (3/8) Al2(S04)3 K2SO4 24H2O, aluminum sulfate—potassium sulfate—water (1/1/24) AICI3 4C2H5OH, aluminum chloride—ethanol (1/4). [Pg.223]

Sodium alum occurs naturally as the mineral mendo2ite. Commercially, it is produced by the addition of a sodium sulfate solution to aluminum sulfate. Small amounts of potassium sulfate, sodium siUcate, and soda ash can be added to improve product handling and performance. After adjustment of the ratio of aluminum sulfate to sodium sulfate, water is evaporated to give a hard cake ia the cooling pans. This cake is further heated ia roasters and ground to a fineness of 99% through a 100-mesh (- 150 fiva) sieve. [Pg.177]

P alkalinity must be maintained higher in high sulfate waters. However, if the P alkalinity reading is much over 500 ppm, coagulation will deteriorate. [Pg.416]

ERA Ambient water quality criteria for protection of human health for alpha-, beta-endosulfan and endosulfan sulfate water and organisms organisms only 110 pg/L 240 pg/L EPA 1999c... [Pg.264]

Aquatic Life Criteria for alpha-, and beta-endosulfan Freshwater acute Freshwater chronic Marine acute Marine chronic Human health criteria for alpha-and beta-endosulfan and endosulfan sulfate water and fish water only 0.22 pg/L 5.6x10 pg/L 3.4x10 pg/L 8.7x10 pg/L 3.5X10" mg/L 4.3X10" mg/L Alabama Department of Environmental Management 1998... [Pg.267]

Colorado Aquatic life based criteria for surface waters— endosulfan Acute Chronic Human health based for surface water— endosulfan sulfate water and organism water only 0.11 pg/L 0.056 pg/L 110 pg/L Not given Colorado Department of Public Health and Environment 1999... [Pg.267]

Schwertmannite and the chemical modeling of iron in acid sulfate waters. Geochimica et Cosmochimica Acta, 60, 2111-2121. Jonsson, J. Persson, P., Sjoberg, S., Lovgren, L. 2005. Schwertmannite precipitated from acid mine drainage phase transformation, sulphate release and surface properties. Applied Geochemistry, 20, 179-191. [Pg.382]

Gkorafor, G.C. Solubility and density isotherms for the sodium sulfate-water-methanol system. J. Chem. Eng. Data, 44 (3) 488-490, 1999. [Pg.1704]

A special case represents acid sulfate waters released from mines where metal sulfide ores and lignite have been exploited. S- and 0-isotope data may define the conditions and processes of pyrite oxidation, such as the presence or absence of dissolved oxygen and the role of sulfur-oxidizing bacteria (i.e. Taylor and Wheeler 1994). [Pg.156]

Lloyd MR (1967) Oxygen-18 composition of oceanic sulfate. Science 156 1228-1231 Lloyd MR (1968) Oxygen isotope behavior in the sulfate-water system. J Geophys Res 73 6099-6110... [Pg.256]

This paper presents the grade-efficiency curves of a 75 n flat bottom cyclone (RWB 1613) provided by the Amberger Kaolin Werke (AKW). It is tested for the ammonium sulfate-water system for both fines removal and product classification. Its results will be compared with the results for fines removal obtained when using an... [Pg.131]

Surfactants can act like lipids or emulsifiers in solubilizing flavor materials in surfactant micelles. Headspace analysis techniques were used to follow the release of several common dentifrice flavorants from a solution containing the surfactant sodium lauryl sulfate. Water/micelle partition coefficients were derived to describe the solubilization of the flavorants in tiie surfactant micelle (76). Initially, the flavor is solubilized in the surfactant micelle. As both the micelle and flavor concentration decrease on dilution, flavor compounds, which are highly soluble in the micelle, preferentially increase in the headspace [HGURE11]. [Pg.24]

The process for electrowinning of copper is schematically shown in Fig. 12.9. If copper(I) sulfate in AN-H20-H2S04 solution is electrolyzed using a platinum electrode as anode and a copper electrode as cathode, one-electron processes occur at the two electrodes (Cu1 —> Cu2 at the anode and Cu1 —> Cu° at the cathode). Compared with the conventional electrowinning from the aqueous acidic solution of copper(II) sulfate (water oxidation at the anode and Cu2+ —> Cu° at the cathode), the electric power consumed is only about 10% and high-quality copper can be obtained. It is of coruse necessary to return Cu2+, generated at the anode, to Cu+. But various methods are applicable to it, e.g., by the contact with coarse copper. [Pg.323]

Figure 16.3. Enthalpy-composition diagrams of some salt solutions. Several other diagrams are in the compilation of Landolt-Bomstein, IV 4b, 1972, pp. 188-224. (a) sodium sulfate/water (b) magnesium sulfate/water (after Chemical Engineers Handbook, 1963 edition, McGraw-Hill, New York) (c) sodium carbonate/water. Figure 16.3. Enthalpy-composition diagrams of some salt solutions. Several other diagrams are in the compilation of Landolt-Bomstein, IV 4b, 1972, pp. 188-224. (a) sodium sulfate/water (b) magnesium sulfate/water (after Chemical Engineers Handbook, 1963 edition, McGraw-Hill, New York) (c) sodium carbonate/water.
Alkyl hydrogen sulfate Water Alcohol Sulfuric acid... [Pg.253]

TABl.F. I. TERMINOLOGY AND PROPERTIES OF CALCIUM SULFATE-WATER COMPOUNDS... [Pg.749]

In cooling water deposits, the sulfate scale is normally present as gypsum (CaSC>4 2H2O). Sulfate scales are hard and difficult to remove and therefore treatment techniques employed must be carefully controlled to avoid scaling risks. There are specific polymeric chemical treatments now available to control sulfate deposition in high sulfate waters. [Pg.34]

TLC separation of DNP-amino acids may be carried out on cellulose [14] or on polyamide layers [15,16] with several types of solvent systems. A two-dimensional separation of DNP-amino acids on cellulose with toluene—2-chloroethanol—pyridine—5 N ammonia (5 3 1.5 6.5) and saturated ammonium sulfate-water-sodium dodecyl sulfate (25 ml 175 ml 0.144 g) is shown in Fig.4.8. A similar separation on polyamide layers is... [Pg.119]

Kargel JS, Head JW III, Hogenboom DL, Khurana KK, Marion GM (2001) The system sulfuric acid-magnesium sulfate-water Europa s ocean properties related to thermal state. Lunar and Planetary Science Conference XXXII, Houston TX. Abstract 2138... [Pg.232]

To a solution of 1.14 g of 3-methyl-trans-4a-cisoid-4a,5a-cis-5a-l,4a,5,5a,10b,10c-hexahydro-7-dioxino[5,4-a]cyclopenta[b]benzofuranyl-methanol in 10 ml of dimethoxyethane cooled in an ice bath was added 0.43 ml of anhydrous pyridine and 0.38 ml ofthionyl chloride, and the mixture was stirred for 3 hours at room temperature. After addition of ether to the reaction mixture, the precipitate was filtered, and water was added to the filtrate and the mixture was extracted three times with ether. The extract was washed with aqueous saturated solution of copper sulfate, water, aqueous saturated solution of sodium hydrogen carbonate and aqueous saturated solution of sodium chloride, dried, and concentrated to give 1.2 g of crude crystals. The crude crystals were recrystallized from ethyl acetate-hexane to yield 1 g of the pure titled chloride (m.p. 94-95°C, yield 83%). [Pg.594]


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See also in sourсe #XX -- [ Pg.384 ]




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