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and sulphide precipitation

and sulphide precipitation

  • Hydrogen sulfide precipitation   Journal of Chemical

    Hydrogen sulfide precipitation Journal of Chemical

    Abstract In the precipitation of metal sulfides from solution, either aqueous or gaseous sources of sulfide can be used. In this work, batch aqueous and gaseous sulfide experiments confirmed that no precipitation of Ni 2+ was possible when only the H 2 S(aq) sulfide

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  • Sulphide precipitation   GTK

    Sulphide precipitation GTK

    A special feature of sulphide precipitation is the high reactivity of sulphide with metals and the characteristics of the precipitates. This emphasizes the need for process control and optimization as well as the choice of suitable solids/liquid separation technique.

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  • KINETICS OFIRONSULFIDEAND MIXED IRON

    KINETICS OFIRONSULFIDEAND MIXED IRON

    precipitation rate of iron sulfide scale and the corrosion rate of X65 increased with the increase of H2Sconcentration, which are somewhat smaller than at the temperature of 80C (Figure 2and Figure 3).Figure 18and Figure 19show the precipitation rate of iron sulfide scale and the corrosion rate of X65 in approximately 20 hours, which are much

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  • Review of metal sulphide precipitation   ScienceDirect

    Review of metal sulphide precipitation ScienceDirect

    The major highlight of this research paper is that it is an original review paper of work in the field of metal sulphide precipitation. Although there have been numerous studies on metal sulphide precipitation, the research field as a whole is not well integrated.

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  • KINETICS OFIRONSULFIDEAND MIXED IRON

    KINETICS OFIRONSULFIDEAND MIXED IRON

    KINETICS OFIRONSULFIDEAND MIXED IRON SULFIDE/CARBONATE SCALEPRECIPITATION INCO2/H2S CORROSION WeiSunandSrdjanNesic InstituteforCorrosionandMultiphase Technology

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  • Mining Waste Treatment Technology SelectionTechnology

    Mining Waste Treatment Technology SelectionTechnology

    Chemical precipitation is a conventional technology used to treat mining influenced water (MIW), including acid mine drainage, neutral drainage, and pit lake water. Chemical precipitation processes involve the addition of chemical reagents, followed by the separation of

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  • Sulfide Ores   an overview  ScienceDirect Topics

    Sulfide Ores an overview ScienceDirect Topics

    Sulfide Ores. Sulphide ores were mostly created by (i) the intrusion of molten magma from the mantle into the crust of the earth and (ii) the formation of localized metal rich sulphide ore bodies by sequential solidification and/or hydrothermal leaching and precipitation.

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  • 2010 A review of metal sulphide precipitation  Alison

    2010 A review of metal sulphide precipitation Alison

    2 Although hydroxide precipitation is widely used in industry for metal removal, there are some advantages to sulphide precipitation, including the lower solubility of metal sulphide precipitates, potential for selective metal removal, fast reaction rates, better settling properties and potential for re use of sulphide precipitates by

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  • sulphide precipitation translation German  English German

    sulphide precipitation translation German English German

    A process according to claim 1, wherein the nickel and cobalt is recovered by way of either sulphide precipitation using hydrogen sulphide or other sulphide source, mixed hydroxide precipitation, ion exchange or liquid liquid extraction.

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  • sulphide precipitation definition  English definition

    sulphide precipitation definition English definition

    Search sulphide precipitation and thousands of other words in English definition and synonym dictionary from Reverso. You can complete the definition of sulphide precipitation given by the English Definition dictionary with other English dictionaries , Lexilogos, Oxford, Cambridge, Chambers Harrap, Wordreference, Collins Lexibase dictionaries, Merriam Webster

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  • sulfide  Definition, Classes, Formulas,  Facts

    sulfide Definition, Classes, Formulas, Facts

    Sulfide, also spelled sulphide, any of three classes of chemical compounds containing the element sulfur. The three classes of sulfides include inorganic sulfides, organic sulfides (sometimes called thioethers), and phosphine sulfides. they can also be produced by reduction of a sulfate by carbon or by precipitation from acidic aqueous

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  • Precipitation  weather  Britannica

    Precipitation weather Britannica

    Precipitation Precipitation, all liquid and solid water particles that fall from clouds and reach the ground. These particles include drizzle, rain, snow, snow pellets, ice crystals, and hail. The two most common are sodium chloride swept up from the oceans and sulfate bearing compounds formed through gaseous reactions in the atmosphere

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  • Separation of Toxic Heavy Metals by Sulfide Precipitation

    Separation of Toxic Heavy Metals by Sulfide Precipitation

    Sulfide precipitation with Na 2 S is found to be highly effective to obtain a high degree of separation of heavy metal cations (Cd, Zn, Cu, and Pb) and of the oxyanions of arsenic and selenium from complex wastewaters. The metal separation characteristics are evaluated with a dilute synthetic

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  • Copper sulfide precipitation in a fluidised bed reactor

    Copper sulfide precipitation in a fluidised bed reactor

    The feasibility of the removal of a single metal (copper) by sulphide precipitation from a synthetic stream was investigated in a seeded fluidised bed reactor.

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  • Metal accumulation in intertidal marshes Role of sulphide

    Metal accumulation in intertidal marshes Role of sulphide

    The depth at which sulphide precipitation significantly contributed to metal accumulation depended on the sampling location, and varied from less than 5 cm in clayey, organic sediments to more than 1 m in sandy sediments.

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  • ammonium sulphide manganese mine products

    ammonium sulphide manganese mine products

    Oct 18, 2018Kinetics of zinc and cobalt sulphide precipitation Science Direct. Apr 15, 1991 sulphate by controlled addition of sodium sulphide solution. The solubility products of metal sulphides are given in handbooks [ 13 ].

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  • Removal of Aqueous Lead and Copper Ions by Using Natural

    Removal of Aqueous Lead and Copper Ions by Using Natural

    This study deals, with a process to recover lead hydroxides with natural hydroxyapatite powder and copper cyanide ions with sulphide precipitation from solutions of the cyanidation process. This technology is based on inducing nucleated precipitation of copper and silver in a serpentine reactor, using sodium sulfide as the precipitator, and

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  • Review of Metal Sulfide Precipitation  Request PDF

    Review of Metal Sulfide Precipitation Request PDF

    Although there have been numerous studies on metal sulphide precipitation, the research field as a whole is not well integrated. This paper reviews the disparate areas of study into metal sulphide

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  • Zinc sulfide

    Zinc sulfide

    Zinc sulfide (or zinc sulphide) is an inorganic compound with the chemical formula of ZnS. This is the main form of zinc found in nature, where it mainly occurs as the mineral sphalerite . Although this mineral is usually black because of various impurities, the pure material is

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  • sulphide precipitation translation German  English German

    sulphide precipitation translation German English German

    A process according to claim 1, wherein the nickel and cobalt is recovered by way of either sulphide precipitation using hydrogen sulphide or other sulphide source, mixed hydroxide precipitation, ion exchange or liquid liquid extraction.

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  • Removal of Aqueous Lead and Copper Ions by Using Natural

    Removal of Aqueous Lead and Copper Ions by Using Natural

    Sulphide precipitation of metals is a viable alternative process for copper recovery from the barren cyanide so lutions because of the possible high degree of metal re moval over a broad pH range [5]. For the application of copper and cyanide recovery after cyanidation, the key advantage of a sulphide precipitation process is the abi

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  • ammonium sulphide manganese mine products

    ammonium sulphide manganese mine products

    Oct 18, 2018practised are alkali precipitation, sulphide precipitation, electrolytic oxidation product. This paper aims at reviewing the current status of the manganese .. process using ammonium persulphate by Hudson Bay Mining in 1957 (40), and.

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  • Hydroxide Precipitation Methods of Metals In An Insoluble Form

    Hydroxide Precipitation Methods of Metals In An Insoluble Form

    Hydroxide precipitation is a common method as it is relatively simple to operate. Sulfide precipitation has some advantages, but pH and oxidation reduction potential (ORP) must be carefully controlled to minimize the risk of producing toxic levels of hydrogen sulfide gas.

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  • sulphide precipitation fusible   praktijktamas.nl

    sulphide precipitation fusible praktijktamas.nl

    Sulphide precipitation of metals is a viable alternative process for copper recovery from the barren cyanide so lutions because of the possible high degree of Hydroxide Precipitation

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  • sulphide precipitation fusible   praktijktamas.nl

    sulphide precipitation fusible praktijktamas.nl

    Sulphide precipitation of metals is a viable alternative process for copper recovery from the barren cyanide so lutions because of the possible high degree of Hydroxide Precipitation

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  • Sulfide precipitation of heavy metals   EPA   Home Page

    Sulfide precipitation of heavy metals EPA Home Page

    The total operating costs (NaHS as sulfide) with the LSPF process would be 5 to 9 percent higher than the conventional lime precipitation process. Although the sulfide precipitation studies conducted at Boeing were at pH 8 to 9, the sulfide precipitation of heavy metals is highly effective even at lower pH values.

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  • Sulfide Precipitation Of Heavy Metals Effect Of Complexing

    Sulfide Precipitation Of Heavy Metals Effect Of Complexing

    Sulfide precipitation is an effective alternative to hydroxide precipitation for removing various heavy metal ions from industrial wastewaters. An earlier bench scale study evaluated the effectiveness of sulfide precipitation using Na2S. That investigation showed that high metal removal efficiencies can be

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  • Review of metal sulphide precipitation   ScienceDirect

    Review of metal sulphide precipitation ScienceDirect

    Metal sulphide precipitation is an important process in hydrometallurgical treatment of ores and effluents. Although hydroxide precipitation is widely used in industry for metal removal, there are some advantages to sulphide precipitation, including the lower solubility of metal sulphide precipitates, potential for selective metal removal, fast

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  • Selective Sulphide Precipitation of Heavy Metals from

    Selective Sulphide Precipitation of Heavy Metals from

    Selective metal sulphide precipitation was studied as a function of pH, contact time, and temperature. The results showed that it was possible to separate metals by accurately controlling the pH and temperature. Below pH 2.5, copper precipitation was complete.

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  • sulphide precipitation definition  English definition

    sulphide precipitation definition English definition

    Search sulphide precipitation and thousands of other words in English definition and synonym dictionary from Reverso. You can complete the definition of sulphide precipitation given by the English Definition dictionary with other English dictionaries , Lexilogos, Oxford, Cambridge, Chambers Harrap, Wordreference, Collins Lexibase dictionaries, Merriam Webster

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