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1 Kinoshita Gold Recovery Download as PDF File (.pdf), Text File (.txt) or read online.
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surfactants would strongly depend on the ore mineralogy and the parameters of the pulp (temperature, pH, The overall gold extraction was ca. 82%. A gold deportment study carried out on the CIL residue sample showed that 67% of the total gold losses are related to preg robbing.
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The main influence factors including extraction equilibrium time, surfactants concentration, NaCl concentration, and pH on the extraction efficiency (E%) were explored. Furthermore, an effective method was devoted for gold(III) stripping.
gold was found to be strongly complexed with the nonionic surfactants in hydrochloric acid media, and we have examined the separation of gold in such unit operations as solvent extraction , cloud point extraction  and micellar enhanced ultrafiltration .
The micelles entrap gold(III) ions in aqueous solutions due to a high affinity between the surfactant and the metal, and then are rejected by a ultrafiltration membrane having smaller pores than the size of the micelle, whereby a concentration of gold(III) can be realized in the retentate solution.
in 1 hour, and the surfactant provides concurrent extraction of peptides from gels, eliminating the need for post digestion peptide extraction. The surfactant also improves recovery of longer peptides that are typically retained in the gel under a standard extraction protocol.
The liquid liquid extraction tests were made in a 150 ml pyrex separatory funnel containing 100 cc of sur factant solution and 25 cc of decane. One gram of 400 mesh mineral was first conditioned with the 100 cc of surfactant solution by stirring for 20 minutes at 2500 rpm.
gold nanoparticles stabilized by tetrathiolated resorcinar enes 1 and 2 and their dispersibility in nonpolar organic solvents (see Figure 1). Compound 2 is an exceptionally effective surfactant it can mediate the extraction of colloidal gold particles as large as 70nm from aqueous suspensions, and maintain kinetically stable dispersions
MTEC National Science and Technology Development Agency Cloud Point Extraction of Gold [III ] Ion Using Nonionic Surfactant PONPE 9 Extraction as a means f
Table 1 Extraction capacity of solid phase extraction column with different columns (mg) Types of quaternary ammonium surfactant Recovery rate of gold being all more than 98 % 14 mg enrichment amounts of gold, 3 mg enrichment amounts of gold, 4 ml of ethanol eluent 3 ml of ethanol eluent Enrichment amounts of C18 column cannot exceed maximum
Cetrimonium bromide [(C 16 H 33)N(CH 3) 3]Br; cetyltrimethylammonium bromide; hexadecyltrimethylammonium bromide; CTAB] is a quaternary ammonium surfactant.. It is one of the components of the topical antiseptic cetrimide. The cetrimonium (hexadecyltrimethylammonium) cation is an effective antiseptic agent against bacteria and fungi.
The new method can also be used as the extraction process of gold from alkaline cyanide solution. Therefore, a new process of gold extraction was put forward. The extraction efficiency of surfactant is in such an order (CTMAB CPB gt; BDMDAC gt; DTMAC).
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paper also puts forward a new process of gold extraction. Keywords Solid phase extraction; Surfactant; Alkaline cyanide solution; Gold; Mechanism 1 Introduction Cyanidation is the dominant process in the domestic and foreign gold extraction process. Therefore, the gold extraction from alkaline cyanide solution becomes a hot and difcult subject.
Gold Extraction through Vesicles Self Assembled by Cationic Gemini Surfactant and Sodium Deoxycholate Industrial Engineering Chemistry Research
The hypothesis tested in adding the surfactants was that the presence of a surfactant would allow the bacteria to achieve a more intimate contact with the mineral surface and thereby improve copper extraction. A portion of the results obtained in this testing is shown in table 1 for the nonionic surfactant
Cloud Point Extraction from Gold Solution An aqueous solution containing PONPE 9 in the range of 1 to 2.5% (w/v) and gold(III) ion in the range of (6.3 to 25.3) 163; 10 25 M was well mixed at
Gold extraction by micelles. Solutions of gold in form of tetrachloroaurate, AuCl 4 , were mixed with aqueous solutions containing the surfactant and eventually the metal extractor (PADA) and salt. The percent of metal retained by the surfactant, R, has been calculated using Eq.
ionic surfactant, N decylphosphocholine (Fos choline 10), were generally effective in the extraction of a broad range of membrane proteins. However, certain detergents were more effective than others in the extraction of specic classes of integral membrane proteins, offering guidelines for
In Comparative Example C1 a state of the art hydrocarbon surfactant (Comparative Surfactant C1) was evaluated as an additive to alkaline cyanide lixiviants used to extract gold and silver from low grade ore. In . Comparative Example C2 no surfactant was added to the lixiviant used to extract gold and silver from low grade ore.
foam separation, nonionic surfactant, gold(III), surface excess, Freundlichs adsorption isotherm, cloud point extraction Conflicts of Interest The authors declare no conflicts of interest.
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MTEC National Science and Technology Development Agency Cloud Point Extraction of Gold [III ] Ion Using Nonionic Surfactant PONPE 9 Extraction as a means f of material recovery is an economical
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