Solvent Extraction Studies of Copper from a Heap Leach Liquor Using Mextral 5640H
| dc.contributor.author | Hosseinzadeh, Mostafa | |
| dc.contributor.author | Petersen, Jochen | |
| dc.contributor.author | Azizi, Asghar | |
| dc.date.accessioned | 2024-04-29T10:29:54Z | |
| dc.date.available | 2024-04-29T10:29:54Z | |
| dc.date.issued | 2022-10-20 | |
| dc.date.updated | 2022-10-26T11:08:09Z | |
| dc.description.abstract | In this study the extractive capability of Mextral 5640H was investigated for extraction of copper from a heap leach liquor. In this regard, the influence of parameters such as pH (0.2–2.8), extractant concentration in kerosene diluent (2.5%–10% <i>v</i>/<i>v</i>), temperature (25–70 °C), contact time (0–300 s), stirring speed (100–1200 rpm), phase ratio (O/A) (0.6–1.8) and Cu initial concentration (0.5–2 g/L) in the leach liquor were examined and optimized. The findings demonstrated that the Mextral 5640H extractant had a very high efficiency and selectivity in copper extraction from the leachate. 98.17% Cu, with less than 0.5% of Fe and Mn, were extracted at pH 1.6, 10% (<i>v</i>/<i>v</i>) Mextral 5640H concentration, ambient temperature (25 °C), 400 rpm stirring speed, 2 min contact time and an O/A phase ratio of 1:1. Under equilibrium conditions it was found that one mol of Cu is extracted by 7 mol of Mextral 5640H. Additionally, analysis using a McCabe–Thiele diagram suggests a two-stage extraction to reach the maximum extraction of copper (99.5%) from the leachate at operational condition using industrial mixer-settlers. Furthermore, a thermodynamic study was conducted, and the measured values of ΔH = 15.13 kJ/mol, ΔG = −6.95 kJ/mol and ΔS = 74.10 J/mol/K indicate an endothermic, spontaneous nature and high affinity of copper extraction. | |
| dc.identifier | doi: 10.3390/min12101322 | |
| dc.identifier.apacitation | Hosseinzadeh, M., Petersen, J., & Azizi, A. (2022). Solvent Extraction Studies of Copper from a Heap Leach Liquor Using Mextral 5640H. http://hdl.handle.net/11427/39482 | en_ZA |
| dc.identifier.chicagocitation | Hosseinzadeh, Mostafa, Jochen Petersen, and Asghar Azizi "Solvent Extraction Studies of Copper from a Heap Leach Liquor Using Mextral 5640H." (2022) http://hdl.handle.net/11427/39482 | en_ZA |
| dc.identifier.citation | Minerals 12 (10): 1322 (2022) | |
| dc.identifier.ris | TY - Journal Article AU - Hosseinzadeh, Mostafa AU - Petersen, Jochen AU - Azizi, Asghar AB - In this study the extractive capability of Mextral 5640H was investigated for extraction of copper from a heap leach liquor. In this regard, the influence of parameters such as pH (0.2–2.8), extractant concentration in kerosene diluent (2.5%–10% <i>v</i>/<i>v</i>), temperature (25–70 °C), contact time (0–300 s), stirring speed (100–1200 rpm), phase ratio (O/A) (0.6–1.8) and Cu initial concentration (0.5–2 g/L) in the leach liquor were examined and optimized. The findings demonstrated that the Mextral 5640H extractant had a very high efficiency and selectivity in copper extraction from the leachate. 98.17% Cu, with less than 0.5% of Fe and Mn, were extracted at pH 1.6, 10% (<i>v</i>/<i>v</i>) Mextral 5640H concentration, ambient temperature (25 °C), 400 rpm stirring speed, 2 min contact time and an O/A phase ratio of 1:1. Under equilibrium conditions it was found that one mol of Cu is extracted by 7 mol of Mextral 5640H. Additionally, analysis using a McCabe–Thiele diagram suggests a two-stage extraction to reach the maximum extraction of copper (99.5%) from the leachate at operational condition using industrial mixer-settlers. Furthermore, a thermodynamic study was conducted, and the measured values of ΔH = 15.13 kJ/mol, ΔG = −6.95 kJ/mol and ΔS = 74.10 J/mol/K indicate an endothermic, spontaneous nature and high affinity of copper extraction. DA - 2022-10-20 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PY - 2022 T1 - Solvent Extraction Studies of Copper from a Heap Leach Liquor Using Mextral 5640H TI - Solvent Extraction Studies of Copper from a Heap Leach Liquor Using Mextral 5640H UR - http://hdl.handle.net/11427/39482 ER - | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11427/39482 | |
| dc.identifier.vancouvercitation | Hosseinzadeh M, Petersen J, Azizi A. Solvent Extraction Studies of Copper from a Heap Leach Liquor Using Mextral 5640H. 2022; http://hdl.handle.net/11427/39482. | en_ZA |
| dc.title | Solvent Extraction Studies of Copper from a Heap Leach Liquor Using Mextral 5640H | |
| dc.type | Journal Article |