Removal of Cu (II) from aqueous solutions using magnetite: A kinetic, equilibrium study

Kalpaklı, Yasemen

doi:10.12989/aer.2015.4.2.119

Cited by 8 publications

(5 citation statements)

References 37 publications

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“…Alorro et al [24] showed that gold ions adsorbed on magnetite due to higher standard reduction potential of Au than the open circuit potential (OCP) of magnetite, and also observed that small amount of Cu adsorbed even though the standard reduction potential of Cu is lower than OCP of magnetite. Since the standard reduction potential of gold cyanide complex ions decreased to −0.3 V versus SHE from 1.1 V versus SHE in chloride solution [26][27][28], it was expected that the remaining cyanide ions would prevent Au adsorption on the magnetite, whereas a few amounts of copper ions could be adsorbed due to the pH and difference of solution media [29][30][31][32]. The remaining copper ions can have a detrimental effect on the purity of gold in an electrowinning process of gold [33].…”

Section: Results Presented Inmentioning

confidence: 99%

Destruction of Cyanide and Removal of Copper from Waste Printed Circuit Boards Leach Solution Using Electro-Generated Hypochlorite Followed by Magnetite Adsorption

Bae

Lee

Kim

et al. 2019

Metals

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The removal of the cyanide and copper (Cu) from the waste printed circuit boards (WPCBs) cyanide leach solution through the alkaline chlorination using electro-generated hypochlorite (NaOCl) followed by magnetite (Fe3O4) adsorption is investigated. The efficiency of the destruction of cyanide and precipitation of Cu was increased with increasing the concentration of free available chlorine in NaOCl. More than 99% of free cyanide and 76% of Cu were removed under the following conditions: concentration of chlorine in electro-generated NaOCl, 5.2 g/L; volume ratio of NaOCl/leach solution, 1; pH, ~9.8; ambient temperature for 12 h. Then, magnetite adsorption for selective removal of remaining Cu (50.5 mg/L) was selected and more than 99% of copper ion was successfully removed with dosage 10g/100mL, shaking speed 150 rpm within 30 min. The results revealed that the alkaline chlorination using electro-generated NaOCl followed by magnetite adsorption could completely remove the cyanide and Cu, remaining Au in the final solution.

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Section: Results Presented Inmentioning

confidence: 99%

Destruction of Cyanide and Removal of Copper from Waste Printed Circuit Boards Leach Solution Using Electro-Generated Hypochlorite Followed by Magnetite Adsorption

Bae

Lee

Kim

et al. 2019

Metals

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“…5,7,8,25,27−31 Magnetic properties allow for easy and efficient collection, reducing chemicals needed for removal and decreasing the production of secondary pollutants. 26,34,35 Additionally, Fe 3 O 4 can effectively capture anions and cations across a range of pH values. 13,26,27,32,33 Further, Fe 3 O 4 has demonstrated potential in applications such as magnetic inks, MRI contrast agents, and water treatment.…”

Section: Introductionmentioning

confidence: 99%

“…Researchers are currently exploring various methods to address contaminant removal, including ion exchange, biochar, reverse osmosis, adsorption, and a selective capacitive removal technology employing electro-adsorption or capacitive deionization. ,,,,, This work examined the adsorption method, using magnetite (Fe 3 O 4 ) particles as the adsorbent. Adsorption is efficient, simple, and produces less byproducts than methods such as membrane filtration, ion exchange, and chemical precipitation. ,,, Fe 3 O 4 is inexpensive, already exists in the environment, and has several favorable characteristics including biocompatibility, magnetic susceptibility, and an easily modified surface. ,,,,− Magnetic properties allow for easy and efficient collection, reducing chemicals needed for removal and decreasing the production of secondary pollutants. ,, Additionally, Fe 3 O 4 can effectively capture anions and cations across a range of pH values. ,,,, Further, Fe 3 O 4 has demonstrated potential in applications such as magnetic inks, MRI contrast agents, and water treatment. − …”

Section: Introductionmentioning

confidence: 99%

Water Treatment Method for Removal of Select Heavy Metals and Nutrient Ions Through Adsorption by Magnetite

et al. 2022

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This study explored the removal of contaminants from surrogate solutions using magnetite particles. Commercially available magnetite was used for the removal of copper, lead, nitrate, and phosphate from surrogate solutions. Single-stage experiments with copper, lead, and phosphate surrogate solutions achieved over 98% removal, while nitrate removal experiments only achieved 7.47%, in 24 h at high (20 g/L) magnetite doses and initial concentrations of 100 mg contaminant/L. Two-stage experiments with copper showed over 99.9% cumulative removal after the second stage. Adsorption kinetics experiments for copper, lead, and phosphate demonstrate rapid uptake of contaminants with high doses of magnetite, removing over 90% of contaminants in 4 min or less and follow a pseudo-second-order model. Ultimately, this study aims to establish the minimum magnetite dose and/or minimum number of stages required to remove contaminants below water quality standards for human and/or aquatic life. Water pollution is a serious global issue, and this study poses a potential solution that can be modified for a variety of applications, including environmental contamination and industrial wastewater treatment.

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“…Cu ions is among those hazardous metal that are most commonly found in industrial wastewater. Even at a very small amount, Cu ions can cause severe physiological or neurological damage [1,2]. It was previously reported that a permissible level of Cu in water is 2 mg/L (milligram/ liter).…”

Section: Introductionmentioning

confidence: 99%

Removal of Copper Ions from Aqueous Solution Using Waste Mill Scales

Asyikin

Azis

Sulaiman

et al. 2020

SSP

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The optimization of the Copper ions (Cu ions) adsorption from aqueous solution for inclusion in prolonged the milling time of the extracted iron oxides from waste mill scales has been investigated. Different milling times were used to reduce the size of the raw mill scale which are 24, 48 and 72 h. The three adsorbents were characterized using XRD, FESEM and VSM. Adsorbents that milled for 72 hours gave pure magnetite from the XRD results. FESEM images revealed that prolonged the milling time might reduced the particle sizes. Magnetic hysteresis revealed that all the samples having ferromagnetic behavior. Batch adsorption experiment had been carried out with the three adsorbents and as the results, adsorbents that milled with 72 hours shown highest removal of Cu ions with 95% removal efficiency.

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Removal of Cu (II) from aqueous solutions using magnetite: A kinetic, equilibrium study

Cited by 8 publications

References 37 publications

Destruction of Cyanide and Removal of Copper from Waste Printed Circuit Boards Leach Solution Using Electro-Generated Hypochlorite Followed by Magnetite Adsorption

Destruction of Cyanide and Removal of Copper from Waste Printed Circuit Boards Leach Solution Using Electro-Generated Hypochlorite Followed by Magnetite Adsorption

Water Treatment Method for Removal of Select Heavy Metals and Nutrient Ions Through Adsorption by Magnetite

Removal of Copper Ions from Aqueous Solution Using Waste Mill Scales

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