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Journal articles on the topic 'Metal Extraction'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Gao, D. L., Ya Fei Guo, Xiao Ping Yu, Shi Qiang Wang, and Tian Long Deng. "Ionic Liquid Extraction Methods for Alkali and Alkaline Earth Metal Ions." Advanced Materials Research 791-793 (September 2013): 224–27. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.224.

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Ionic liquids (ILs) have been considered as successful alternative extraction solvents, especially, they have become potential replacements of volatile organic compound in the extraction of metal ions for the properties of negligible vapor pressure, nonflammability, high thermostability, etc. In this paper, ILs as environmental friendly solvents in liquid-liquid extractions of alkali and alkaline earth metal ions were summarized, the part of extraction phase compositions, extraction conditions and back extraction method were discussed, and the potency of applications of ILs in extraction and s

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2

Stevens, Geoffrey W., Jilska M. Perera, and Franz Grieser. "Metal ion extraction." Current Opinion in Colloid & Interface Science 2, no. 6 (1997): 629–34. http://dx.doi.org/10.1016/s1359-0294(97)80056-8.

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3

Liu, Wensen, Jian Zhang, Zhenya Xu, Jie Liang, and Zhaowu Zhu. "Study on the Extraction and Separation of Zinc, Cobalt, and Nickel Using Ionquest 801, Cyanex 272, and Their Mixtures." Metals 11, no. 3 (2021): 401. http://dx.doi.org/10.3390/met11030401.

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Both Cyanex 272 (bis (2,4,4-trimethylpentyl) phosphinic acid) and Ionquest 801 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester) are commonly used for metal extraction and separation, particularly for zinc, cobalt, and nickel, which are often found together in processing solutions. Detailed metal extractions of zinc, cobalt, and nickel were studied in this paper using Cya-nex 272, Ionquest 801, and their mixtures. It was found that they performed very similarly in zinc selectivity over cobalt. Cyanex 272 performed much better than Ionquest 801 in cobalt separation from nickel. However, ve

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4

Manousi, Natalia, Dimitrios A. Giannakoudakis, Erwin Rosenberg, and George A. Zachariadis. "Extraction of Metal Ions with Metal–Organic Frameworks." Molecules 24, no. 24 (2019): 4605. http://dx.doi.org/10.3390/molecules24244605.

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Metal–organic frameworks (MOFs) are crystalline porous materials composed of metal ions or clusters coordinated with organic linkers. Due to their extraordinary properties such as high porosity with homogeneous and tunable in size pores/cages, as well as high thermal and chemical stability, MOFs have gained attention in diverse analytical applications. MOFs have been coupled with a wide variety of extraction techniques including solid-phase extraction (SPE), dispersive solid-phase extraction (d-SPE), and magnetic solid-phase extraction (MSPE) for the extraction and preconcentration of metal io

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5

Nyzhnyk, Taras. "WATER PURIFICATION FROM HEAVY METAL IONS USING LIME AND PHMG." WATER AND WATER PURIFICATION TECHNOLOGIES. SCIENTIFIC AND TECHNICAL NEWS 36, no. 2 (2023): 3–9. http://dx.doi.org/10.20535/2218-930022023281168.

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The method of metal ions' chemical precipitation using polyhexamethylene guanidine (PHMG) and calcium oxide (CaO) was employed for extracting metal ions from concentrated solutions. The order of reagent introduction was found to be crucial in the extraction process, with the best extraction efficiency observed when PHMG was added to water before CaO. This order of addition facilitated the polyelectrolyte effect, resulting in the unfolded conformation of macromolecules and enhancing their interaction with metal ions in solution. Optimal dosage ranges were determined, coinciding with the concent

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Takeshita, Kenji, and Yutaka Okada. "ICONE15-10756 Counter-current Multistage Extraction of Heavy Metal by Centrifuge Extractor with Taylor-Couette Flow." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2007.15 (2007): _ICONE1510. http://dx.doi.org/10.1299/jsmeicone.2007.15._icone1510_396.

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7

Shyam Sunder, Govind Sharma, Sandhya Adhikari, Ahmad Rohanifar, Abiral Poudel, and Jon R. Kirchhoff. "Evolution of Environmentally Friendly Strategies for Metal Extraction." Separations 7, no. 1 (2020): 4. http://dx.doi.org/10.3390/separations7010004.

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The demand for the recovery of valuable metals and the need to understand the impact of heavy metals in the environment on human and aquatic life has led to the development of new methods for the extraction, recovery, and analysis of metal ions. With special emphasis on environmentally friendly approaches, efforts have been made to consider strategies that minimize the use of organic solvents, apply micromethodology, limit waste, reduce costs, are safe, and utilize benign or reusable materials. This review discusses recent developments in liquid- and solid-phase extraction techniques. Liquid-b

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8

Xiang, Xiaoyan, Wentang Xia, and Jianguo Yin. "Resource utilization of titanium-containing slurry by selective extraction and leaching." Metallurgical Research & Technology 115, no. 5 (2018): 504. http://dx.doi.org/10.1051/metal/2018011.

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Resource utilization of titanium-containing slurry was realized by selective extraction and leaching. The results from the experiment confirmed that thistechnology was effective for recycling titanium and niobium from the slurry. During selective extraction, the extract solution with titanium content of 159.40 g/L was obtained after 3 stage-counter current extractions, and the titanium content of extracted residue could be reduced to 1.85 wt% which was much lower than the titanium content of titanium-containing slurry. The results of evaporation experiments indicated that CH2Cl2 in extracted r

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9

Cuculovic, Ana, Mirjana Pavlovic, Dragan Veselinovic, and Scepan Miljanic. "Metal extraction from Cetraria islandica (L.) Ach. lichen using low pH solutions." Journal of the Serbian Chemical Society 73, no. 4 (2008): 405–13. http://dx.doi.org/10.2298/jsc0804405c.

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Extraction of metals (K, Al, Ca, Mg, Fe, Cu, Ba, Zn, Mn and Sr) from dry Cetraria islandica (L.) Ach. lichen was performed using solutions similar to acid rain (solution A H2SO4-HNO3-(NH4)2SO4 and solution B H2SO4- -HNO3-(NH4)2SO4-NH4NO3). The pH values of these solutions were 2.00, 2.58, 2.87, 3.28, and 3.75. Five consecutive extractions were performed with each solution. In all solutions, the extracted metal content, except Cu and Ca, was the highest in the first extract. The highest percentage of the metals desorbed in the first extraction was obtained using solutions with low pH values, 2.

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10

Catapang, Allen Vincent, II James Edward Hernandez, Magdaleno R. Vasquez, and Motoi Wada. "Performance of a reactive magnetron sputtering ion source using water vapor plasma." Journal of Physics: Conference Series 2244, no. 1 (2022): 012099. http://dx.doi.org/10.1088/1742-6596/2244/1/012099.

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Abstract One of the methods used to produce ions of metals and metal oxides is through extracting them from a magnetron sputter-type ion source. Metal nanoparticles, such as zinc oxide (ZnO), can be deposited using this method. However, low-energy conditions are required to prevent damage to the substrate. The extraction of ions from a differentially pumped, reactive magnetron sputtering source with a pulsed, conduit-type extraction electrode is investigated, with Zn as the metal target and argon and water vapor as discharge support and reactive gases, respectively. The use of water vapor has

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11

Shaikh, S. M., R. U. Shaikh, and A. B. Ade. "Protein Profiling of Thiobacillus ferrooxidans and Pseudomonas fluorescens Mutants during Metal Extraction." Journal of Scientific Research 10, no. 1 (2018): 61–66. http://dx.doi.org/10.3329/jsr.v10i1.33641.

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Proteins are specific for the specific task associated with the cell. The metal extracting bacteria, Thiobacillus ferrooxidans and Pseudomonas fluorescens have two different mechanisms for the metal extraction. One extracts the metals by donating electrons and by doing self-oxidation and another is accumulating the metals onto its cell surface which is negatively charged. Therefore to differentiate the task of metal extraction protein profiling was done and compared. The water soluble proteins were analyzed through SDS-PAGE. There was no significant difference in the profiles of both.

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12

Junussov, Medet, Ferenc Mádai, and Bánhidi Olivér. "Sequential extraction of carbonaceous siltstone rock for multi-element analysis by ICP OES." Contemporary Trends in Geoscience 7, no. 2 (2018): 145–52. http://dx.doi.org/10.2478/ctg-2018-0010.

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Abstract The carbonaceous siltstone rock material is a disseminated sulfide-rich sedimentary rock from a sediment-hosted gold deposit of Bakyrchik. The Bakyrchik deposit is located in Eastern Kazakhstan, which includes in Qalba gold province. The main purpose of this paper is a demonstration on chemical extraction of heavy metals from the carbonaceous siltstone rock and detection of its elemental concentrations. In the work was used a rock sample from the deposit which is a sericizited carbonaceous-siltstone rock. In sequential extraction method was selected four stages such as water soluble f

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13

Sládek, Petr, Oldřich Navrátil, and Petr Linhart. "Extraction of Selected Lanthanoids and Scandium with Bis(2-ethylhexyl)hydrogenphosphate in 1,1,2,2-Tetrachlorodifluoroethane." Collection of Czechoslovak Chemical Communications 57, no. 8 (1992): 1647–54. http://dx.doi.org/10.1135/cccc19921647.

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A study was made of the extraction of Ce, Pm, Eu, Tm and Sc(III) from aqueous into organic medium of 1,1,2,2-tetrachlorodifluoroethane (CFC-112) using bis(2-ethylhexyl)hydrogenphosphate (HDEHP) as extracting reagent. On the basis of earlier work which demonstrated the usefulness of using this type of solvent for extractions with dibutylhydrogenphosphate (HDBP) and also the possibility of using CFC-112 for converting the metal chelates formed to the solid phase, the work was concentrated particularly on the dependence of the extraction of selected lanthanoids on the analytical concentration of

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14

Kenzhaliyev, B. K., B. S. Amangeldy, A. Mukhanbet, N. Azatbekuly, A. K. Koizhanova, and D. R. Magomedov. "Development of Software for Hydrometallurgical Calculation of Metal Extraction." Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources 335, no. 4 (2024): 78–88. http://dx.doi.org/10.31643/2025/6445.42.

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Hydrometallurgy plays a critical role in the metallurgical industry by providing an efficient method for extracting metals from ores and secondary materials using aqueous solutions. This approach is particularly advantageous for processing low-grade and complex ores, as well as secondary resources that cannot be effectively processed by traditional pyrometallurgical methods. The objective of this study is to develop specialized software to automate and optimize the calculations necessary for metal extraction in hydrometallurgical processes. The software integrates a complete computational fram

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15

Naeem, Akram Tofighi, Eslam Kashi, Mohammad Ali Salehi, and Razieh Habibpour. "Extraction and separation of La(III), Pr(III) and Nd(III) using binary mixture of D2EHPA with Cyanex272, TOPO, and TBP extractants." Metallurgical Research & Technology 115, no. 6 (2018): 612. http://dx.doi.org/10.1051/metal/2018043.

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This paper investigated the extraction and separation of lanthanum(III), praseodymium(III) and neodymium(III) from aqueous hydrochloric acid solutions using a mixture of di-(2-ethylhexyl) phosphoric acid (D2EHPA) with three other extractants, namely bis(2,4,4-trimethylpentyl) phosphinic acid (Cyanex272), trioctylphosphine oxide (TOPO) and tri butyl phosphate (TBP) diluted in kerosene. In this study, the O/A = 1, T = 25 °C (room temperature), contact time of 10 minutes for the two phases, and kerosene as the diluent were chosen for all experiments. The effective factors studied in this research

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16

Abhilash, Pratima Meshram, Shivendra Sinha, Banshi Dhar Pandey, Vasudevan Krishna Kumari, and Subrat Kar. "Chloride leaching of lanthanum and cerium from Indian red mud and metal separation studies." Metallurgical Research & Technology 116, no. 2 (2019): 210. http://dx.doi.org/10.1051/metal/2018090.

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Bench-scale experiments were conducted to recover lanthanum and cerium from Indian red mud in a hydrochloric acid medium. The method includes acid leaching of red mud pulp and subsequent liquid-liquid extraction of the leached metals with different organic extractants, in order to establish the technical feasibility of extraction and separation simultaneously. The maximum extraction of 88.5% La was achieved at 95 °C, using 1 M HCl, S/L ratio = 1/100 in 1 h with 200 rpm agitation rate. At this temperature, cerium recovery (99.9%) was found to be maximum. The maximum recovery of cerium (99.9%) c

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17

Jena, P. K., and E. A. Brocchi. "Metal Extraction Through Chlorine Metallurgy." Mineral Processing and Extractive Metallurgy Review 16, no. 4 (1996): 211–37. http://dx.doi.org/10.1080/08827509608914136.

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18

JENA, P. K., and E. A. BROCCHI. "Metal Extraction Through Chlorine Metallurgy." Mineral Processing and Extractive Metallurgy Review 16, no. 4 (1997): 211–37. http://dx.doi.org/10.1080/08827509708914136.

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19

Yang, Sixie, Fan Zhang, Huaiping Ding, Ping He, and Haoshen Zhou. "Lithium Metal Extraction from Seawater." Joule 2, no. 9 (2018): 1648–51. http://dx.doi.org/10.1016/j.joule.2018.07.006.

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20

de Leon, Aned, and Abraham F. Jalbout. "Metal induced molecular nano-extraction." Theoretical Chemistry Accounts 121, no. 5-6 (2008): 247–55. http://dx.doi.org/10.1007/s00214-008-0470-3.

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21

Dumazet-Bonnamour, Isabelle, Hatem Halouani, Farhana Oueslati, and Roger Lamartine. "Calixarenes for metal cations extraction." Comptes Rendus Chimie 8, no. 5 (2005): 881–91. http://dx.doi.org/10.1016/j.crci.2005.02.004.

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22

Artem'ev, O. I. "Metal extraction in activation analysis." Journal of Radioanalytical and Nuclear Chemistry Articles 173, no. 1 (1993): 125–35. http://dx.doi.org/10.1007/bf02102704.

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23

Marchi, Giuliano, Luiz Roberto Guimarães Guilherme, Andrew C. Chang, and Clístenes Williams Araújo do Nascimento. "Heavy metals extractability in a soil amended with sewage sludge." Scientia Agricola 66, no. 5 (2009): 643–49. http://dx.doi.org/10.1590/s0103-90162009000500009.

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Few investigations have been carried out about the comparison of desorption rate and amount of heavy metals extracted successively by organic acid mixtures mimicking the rhizosphere and routine extractants in sewage sludge-amended soils. Extractions of Zn, Cd, Ni, Cr, and Cu were performed in samples of a sewage sludge-amended soil using seven extractants: four organic acid mixtures and three routine extractants (DTPA, Mehlich-I, and ammonium acetate). Results from single pass extractions, in which the extractable metal contents were determined by simply extracting the soil a single time, as w

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24

Dong, Bo, Jian-hui Wu, Jun Wu, Xian-peng Zhang, and Jing-jun Zhai. "Solvent extraction process for the selective recovery of copper and cobalt from carrollite leach solution." Metallurgical Research & Technology 116, no. 3 (2019): 309. http://dx.doi.org/10.1051/metal/2018104.

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A solvent extraction application consisting of three-sequential solvent extraction steps to selectively recover the copper and cobalt from carrollite leach solution was conceived and experimentally explored. The first step allowed the simultaneous extraction of 95.5% copper, 0.87% cobalt and 4.79% iron using 20% Lix984 in sulfonated kerosene and O/A ratio of 1 at initial pH of 2. Two-stage scrubbing at pH = 4 using diluted sulphuric acid solution allowed the removal of most of the cobalt (98.56%), iron (97.25%) and small amount of copper (0.36%). Complete stripping of copper was achieved at H2

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25

Tian, Qinghua, Xiangdong Gan, Fuhui Cui, Dawei Yu, and Xueyi Guo. "Selective Extraction of Ni from Superalloy Scraps by Molten Mg-Zn." Metals 11, no. 6 (2021): 993. http://dx.doi.org/10.3390/met11060993.

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Bearing significant concentrations of high value and critical metals, superalloy scraps require comprehensive recycling for metal reclamation. In this study, nickel-based superalloy was treated with molten Mg-Zn for the selective extraction of nickel. The influence of heating temperature, the molar ratio of Mg to Zn in the molten metal, Mg-Zn/superalloy mass ratio, and heating time on metal extraction were investigated. Using the heating temperature of 800 °C, the Mg/Zn molar ratio of 9/1, the Mg-Zn/superalloy mass ratio of 5/1, and heating time of 240 min, the extraction rate of 97.1% was ach

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26

Hosseinzadeh, Mostafa, and Mohammad Raouf Hosseini. "Investigation and optimization of influencing parameters on the copper extraction from a low-grade oxide deposit by acid leaching." Metallurgical Research & Technology 116, no. 3 (2019): 305. http://dx.doi.org/10.1051/metal/2018084.

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Recovery of copper (II) from a low-grade deposit obtained from the rejects of a crushing circuit was investigated by means of leaching using H2SO4solution. Sulfuric acid concentration was between 30–180 g/L, solid content was set at 10–60%, particles were in the size range of −1 + 2 mm, and the leaching time was 5–60 min. Initially, a screening step was utilized involving a full factorial design (FFD) with four factors at two levels and two replications. Normal probability plot of residuals, analysis of variance (ANOVA), surface plots, and contour plots were used to study the effects of the ma

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Wang, Xu, Wenqing Qin, Maolin Li, et al. "Mineralogy of Deep-Sea Manganese Nodules and Advances in Extraction Technology of Valuable Elements from Manganese Nodules." Metals 14, no. 12 (2024): 1359. http://dx.doi.org/10.3390/met14121359.

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The vast seabed holds tremendous resource potential that can provide necessary materials for future human societal development. This study focuses on the mineralogy of seafloor manganese nodules off the coast of China in the Western Pacific and the primary techniques for extracting valuable metal elements from manganese nodules. The research indicates that the main valuable metal elements in the manganese nodules from this region include Cu, Co, Ni, Mn, Fe, etc. The key to extracting these valuable metals lies in reducing Mn(IV) to Mn(II) to disrupt the structure of the nodules, thereby releas

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Lo, J. M., L. H. Shen, and S. J. Yeh. "Determination of extraction constants for metal pyrrolidinedithiocarbamates and chloride-mixed metal pyrrolidinedithiocarbamates by substoichiometric extraction." Journal of Radioanalytical and Nuclear Chemistry Articles 88, no. 2 (1985): 313–23. http://dx.doi.org/10.1007/bf02037007.

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29

Harimu, La, Hasria Hasria, and Putri Intan. "Separation Of Copper And Chromium Metal In Ultrabasic Rocks From Top Of Manoapa Region, Subdistrict Of Lasusua Southeast Sulawesi By Ligand of 2 - (Aminometil) Pyridine." Indonesian Journal of Chemical Research 1, no. 1 (2013): 47–52. http://dx.doi.org/10.30598/ijcr.2013.1-har.

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Study on separation of ions chromium metal and copper in ultrabasic material located in the village to of Monapa subdistrict Lasusua Regency Kolaka Utara Province Sulawesi Tenggara was conducted. The aim of this study was to determine the ability of the ligand 2-(aminometil) pyridine to separate chromium metals and copper to pure metals and its application to separate the chromium metals (Cr) and copper (Cu) in ultrabasic material from the village of Puncak Monapa subdistrict Lasusua Regency Kolaka Utara Province Sulawesi Tenggara by means of extraction method. The concentration of ions chromi

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30

Othman*, Amel Ben, Imen Ben Fredj, and Rym Abidi. "Extracting and complexing properties of di-, tri- and tetra ThiaCalix [4] arenes." International Journal of Bioassays 5, no. 10 (2016): 4948. http://dx.doi.org/10.21746/ijbio.2016.10.007.

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In the present work, the focus is the study of complexing and extracting properties of three nanoscale derivatives namely multicalixarenes 2C, 3C and 4C which the latter structure is a dendrimer structure of first generation. The metal cations included in this study are the alkali metal, alkaline earth metal, some transition metals, heavy metals and lanthanides. This study was conducted essentially in methanol to determine the stoichiometry of the complexes formed, or the location of the coordination sites, and finally to evaluate selectivity's. These studies have been conducted by UV-visible

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31

Lyashenko, Vasyl, Boris Andreev, Tatiana Oliynik, and Ivan Lisovyi. "Increasing the Efficiency and Environmental Safety of Technologies for Extracting Metals from Processing Tailings." Mining Revue 31, no. 1 (2025): 77–87. https://doi.org/10.2478/minrv-2025-0007.

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Abstract One of the most problematic areas of metal extraction from tailings of metal-containing mineral pro-cessing is the complexity of mineral mining and processing tailings utilization without extracting metals and sulfur compounds from them. This is hampered by insufficient efficiency of their secondary pro-cessing technologies. The study utilized the following data from literary sources and patent documentation in the field of technologies and technical means for metal extraction from tailings of metal-containing mineral processing; laboratory and production experiments; physical modelin

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Scharf, Christiane, and André Ditze. "Solvent extraction: fundamental equilibrium studies of neodymium and DEHPA." Metallurgical Research & Technology 114, no. 4 (2017): 404. http://dx.doi.org/10.1051/metal/2017017.

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33

Fan, Helin, Huamei Duan, Wenjie He, et al. "Sequential extraction of vanadium and chromium from chromium-bearing vanadium slag through two-stage soda roasting-water leaching." Metallurgical Research & Technology 115, no. 6 (2018): 607. http://dx.doi.org/10.1051/metal/2018093.

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The sequential extraction of vanadium and chromium from the chromium-bearing vanadium slag through two-stage soda roasting-water leaching was proposed. The precipitation order and thermodynamic stability of Cr-spinel and V-spinel were thoroughly calculated with FactSage 6.3 software. The mechanism of the sequential extraction process is further determined by X-ray diffraction (XRD). Thermodynamic calculations show that the precipitation order of main phases in the chromium-bearing vanadium slag is as follows: Cr-spinel → V-spinel → Fe-olivine, while the priority of the reaction between main ph

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Wang, Wankun, Fuchun Wang, and Fanghai Lu. "Microwave alkaline roasting-water dissolving process for germanium extraction from zinc oxide dust and its analysis by response surface methodology (RSM)." Metallurgical Research & Technology 115, no. 2 (2017): 203. http://dx.doi.org/10.1051/metal/2017093.

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Microwave alkaline roasting-water dissolving process was proposed to improve the germanium (Ge) extraction from zinc oxide (ZnO) dust. The effects of important parameters were investigated and the process conditions were optimized using response surface methodology (RSM). The Ge extraction is consistent with the linear polynomial model type. Alkali-material ratio, microwave heating temperature and leaching temperature are the significant factors for this process. The optimized conditions are obtained as follows, alkali-material ratio of 0.9 kg/kg, aging time of 1.12 day, microwave heating at 6

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Patel, Bhargav C., Devyani R. Tipre, and Shailesh R. Dave. "Biphasic Leaching Operation for the GMDC Polymetallic Bulk Concentrate." Advanced Materials Research 828 (November 2013): 117–21. http://dx.doi.org/10.4028/www.scientific.net/amr.828.117.

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A biphasic leaching operation was employed for the extraction of copper and zinc from the GMDC polymetallic bulk concentrate (PBC). Biogenerated ferric was used in cyclic manner for fed batch metal extractions from the PBC for four cycles under the pre-optimized conditions. Zn extraction was gradually decreased with each succeeding fed-batch cycle and it resulted in 67.89, 62.46, 47.37 and 14.74% of Zn extraction in 1st, 2nd, 3rd and 4th cycle respectively. In case of copper the extraction pattern was 86.63, 81.98, 75.58 and 46.51% Cu extraction in 1st, 2nd, 3rd and 4th cycle respectively. The

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36

Cheng, Baohai, Ting’an Zhang, Kuifang Zhang, Zuoying Cao, and Li Zeng. "Recovery of germanium from acid leach solutions of zinc refinery residue using an oxime extractant of HBL101." Metallurgical Research & Technology 115, no. 5 (2018): 510. http://dx.doi.org/10.1051/metal/2018037.

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An oxime extractant of HBL101 was used to extract germanium from acid leach solutions of zinc refinary residues. The effect of acidity on extraction was investigated. Germanium was extracted from a sulphate acid solution with not too high acidity (1.0∼1.2 mol/L H2SO4), while zinc, cadmium, iron, gallium and arsenic were not extracted. Only small amount of copper was co-extracted. The germanium was readily stripped from the loaded organic solution with NaOH solutions. After germanium stripping, the co-extracted copper can be stripped using 2 mol/L H2SO4 while the extractant regenerated for recy

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Andika Putri, Novita Rusmayanti, Yeti Kurniasih, and Ahmadi Ahmadi. "PENGARUH PERBANDINGAN KONSENTRASI TBP : D2EHPA DAN KONSENTRASI PENGEMBAN DALAM FASAORGANIK PADA EKSTRAKSI PERAK DARI LIMBAH FOTO ROENTGEN." Hydrogen: Jurnal Kependidikan Kimia 4, no. 2 (2016): 87. http://dx.doi.org/10.33394/hjkk.v4i2.92.

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Photo roentgen used for examination of internal organs can produce wastes that are harmful to health and the environment because they containing silver metal ion(Ag+) inform of silver thiosulfate complex ([Ag(S2O3)2]-3). Therefore it was necessary for the separation of Ag metal so that the metal does not pollute the environment and can be used economically. One way to separate the metal Ag is by solvent extraction techniques. This study aimed to determine the effect of concentration ratio of TBP:D2EHPA and carrier compound concentration in the organic phase of the percent extraction of silver

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SEKINE, Tatsuya, and Yuko HASEGAWA. "Metal Complexes and Their Solvent Extraction." Journal of Japan Oil Chemists' Society 39, no. 10 (1990): 729–35. http://dx.doi.org/10.5650/jos1956.39.10_729.

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Murry, Maisha M., Henry B. Spitz, and William B. Connick. "Sequential extraction of uranium metal contamination." Journal of Radioanalytical and Nuclear Chemistry 307, no. 3 (2015): 2075–78. http://dx.doi.org/10.1007/s10967-015-4521-7.

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40

Hébrant, Marc. "Metal ion extraction in microheterogeneous systems." Coordination Chemistry Reviews 253, no. 17-18 (2009): 2186–92. http://dx.doi.org/10.1016/j.ccr.2009.03.006.

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Lentz, D. H., and R. Sowerby. "Hole extraction for sheet metal components." Computer-Aided Design 26, no. 10 (1994): 771–83. http://dx.doi.org/10.1016/0010-4485(94)90015-9.

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Paatero, Erkki, and Johan Sjöblom. "Phase behaviour in metal extraction systems." Hydrometallurgy 25, no. 2 (1990): 231–56. http://dx.doi.org/10.1016/0304-386x(90)90041-y.

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43

Wai, Chien M. "Supercritical Fluid Extraction of Metal Ions." Journal of Chemical Technology & Biotechnology 65, no. 3 (1996): 295. http://dx.doi.org/10.1002/(sici)1097-4660(199603)65:3<295::aid-jctb5408>3.0.co;2-r.

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Min, Li Jing, and Jing Fen Li. "Study on Extraction Technology and Stability of Melanin from Banana Peel." Advanced Materials Research 815 (October 2013): 287–92. http://dx.doi.org/10.4028/www.scientific.net/amr.815.287.

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[Objectiv The aim is to study the extraction technology of melanin from banana peel, and discuss its stability. [Metho We used banana peel as raw material, the absorbance at 410 nm as the index, extracted melanin by base-acid method, and optimized the extraction technology by the single factor and orthogonal test. Then we discussed the melanins stability at different temperature, light source, pH value, metal ions, antioxidant and reducing agents.[Result The best extraction conditions of melanin is that, hydrochloric acid soak time 5 h, alkaline solution pH value 14, extracting time 20 min, ex

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Kozhevnikova, Arina V., Ekaterina S. Uvarova, Varvara E. Maltseva, et al. "Design of Eutectic Solvents with Specified Extraction Properties Based on Intermolecular Interaction Energy." Molecules 29, no. 21 (2024): 5022. http://dx.doi.org/10.3390/molecules29215022.

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A new approach to managing the extraction properties of eutectic solvents based on aliphatic alcohols is proposed. Aliphatic alcohols, when functioning as hydrogen bond donors within a eutectic solvent, significantly enhance the solvent’s efficiency in extracting metal ions. Conversely, when the alcohol acts as a hydrogen bond acceptor, its extraction properties diminish. Molecular modelling reveals that the extraction efficiency of these alcohols is directly proportional to the intermolecular interaction energy between the components of the eutectic solvent.

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Habibpour, R., M. Dargahi, E. Kashi, and M. Bagherpour. "Comparative study on Ce (III) and La (III) solvent extraction and separation from a nitric acid medium by D2EHPA and Cyanex272." Metallurgical Research & Technology 115, no. 2 (2018): 207. http://dx.doi.org/10.1051/metal/2017083.

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The solvent extraction of Cerium(III) and Lanthanum(III) from nitric acid solution using the organophosphorous extractants Di-(2-ethyl hexyl) phosphate (D2EHPA) and di-2,4,4- trimethylpentyl phosphoric acid (Cyanex272) in kerosene was investigated. In this study, the magnitude of the extraction of Ce(III) was found to be more significant with Cyanex272 than D2EHPA. D2EHPA was found to be a better extractant for La(III). Among the two extractants, Cyanex272 was used for the separation of Ce from La in three stages with an extraction efficiency of 90.2% for Ce. A 556 mg/L Ce solution was used fo

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Strzelbicki, Jerzy, Witold Charewicz, Jorg Beger, and Lutz Hinz. "Extraction of Zn(II), Cd(II), and Hg(II) by dodecyloligo(oxyethylene) carboxylic acids." Canadian Journal of Chemistry 66, no. 7 (1988): 1695–700. http://dx.doi.org/10.1139/v88-274.

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The synthesis of a series of n-dodecyloligo(oxyethylene) carboxylic acids of general formula C12H25(OCH2CH2)nOCH2COOH (n = 0 to 5) and application of these compounds for the separation of Zn(II), Cd(II), and Hg(II) in extraction are reported. Negligible extractability of the metal ions investigated was found using dodecyloxyacetic acid (n = 0) which indicated that complexation resulted from metal–cation interaction with oxygen atoms of the polyoxyethylene chain incorporated into the molecule of complexon. In extractions from aqueous solutions containing ZnCl2, CdCl2, HgCl2, and NaOH (pH regula

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Zahir, Md Hasan, Shakhawat Chowdhury, Md Abdul Aziz, and Mohammad Mizanur Rahman. "Host–Guest Extraction of Heavy Metal Ions with p-t-Butylcalix[8]arene from Ammonia or Amine Solutions." International Journal of Analytical Chemistry 2018 (July 11, 2018): 1–11. http://dx.doi.org/10.1155/2018/4015878.

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The capacities of the p-t-butylcalix[8]arene (abbreviated as H8L) host to extract toxic divalent heavy metal ions and silver from aqueous solution phases containing ammonia or ethylene diamine to an organic phase (nitrobenzene, dichloromethane, or chloroform) were carried out. When the metal ions were extracted from an aqueous ammonia solution, the metal ion selectivity for extraction was found to decrease in the order Cd2+> Ni2+> Cu2+> Ag+> Co2+> Zn2+. When the aqueous phase contained ethylene diamine, excellent extraction efficiencies of 97% and 90% were observed for the heavy

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Bokov, Victor, Oleh Sisa, Volodymyr Mirzak, Volodymyr Sviatskyi, and Vitaliy Shmelyov. "Physical Features of The Process of Multi-operation Extraction of Cylindrical Parts From a Metal Mesh." National Interagency Scientific and Technical Collection of Works. Design, Production and Exploitation of Agricultural Machines, no. 52 (2022): 135–56. http://dx.doi.org/10.32515/2414-3820.2022.52.135-155.

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In modern mechanical engineering, a method of single-operation extraction of cylindrical parts from a metal grid with a square mesh is known, which, in particular, has found application for the manufacture of microphone casings. Further improvement of the technology of extracting parts from a metal mesh in the direction of increasing the relative height of the stamped part is associated with the use of a multi-operation method of extraction. The study of this process will allow to significantly reduce the limit coefficient of extraction and thereby significantly increase the relative height of

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Kang, Soo Cheol, Sang Kyung Lee, Seung Mo Kim, Hyeon Jun Hwang, and Byoung Hun Lee. "Quantitative defect density extraction method for metal–insulator–metal capacitor." Semiconductor Science and Technology 35, no. 11 (2020): 115025. http://dx.doi.org/10.1088/1361-6641/abb8af.

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