Sorption of palladium(II), rhodium(III), and platinum(IV) on Fe3O4 nanoparticles

Uheida, Abdusalam; Iglesías, Mònica; Fontàs, Cláudia; Hidalgo, Manuela; Salvadó, Victòria; Zhang, Yu; Muhammed, Mamoun

doi:10.1016/j.jcis.2006.05.015

Cited by 161 publications

(69 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The initial As(V) concentration was 7.5x10 -4 mol L -1 . The results obtained are in agreement with that of solvent extraction studies [41]. It indicates that 3-MPA-coated SPION can be used to extract As(V) selectively from aqueous solutions under the experimental conditions studied.…”

Section: Selectivity With Metal Ionssupporting

confidence: 88%

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Morillo

Uheida

Pérez

et al. 2015

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

In the present work, superparamagnetic iron oxide nanoparticles (SPION) surface-coated with 3-mercaptopropanoic acid (3-MPA) were prepared and their feasibility for the removal of arsenate from dilute aqueous solutions was demonstrated. The synthesized 3-MPA-coated SPION was characterized using transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and Fourier transform infra-red spectrometry (FTIR). Separation efficiency of the coated nanoparticles and the equilibrium isotherm of arsenate adsorption were investigated. The obtained results reveal the arsenate adsorption to be highly pH-dependent, and the maximum adsorption was attained in less than 60 minutes. The resulting increase of 3-MPA-coated SPION adsorption capacity to twice the adsorption capacity of SPION alone under the same conditions is attributed to the increase of active adsorption sites. An adsorption reaction is proposed. On the other hand, efficient recovery of arsenate from the loaded nanoparticles was achieved using nitric acid (HNO 3 ) solution, which also provides a concentration over the original arsenate solution. HIGHLIGHTS• Feasibility of using SPION modified with 3MPA for the removal of As(V).• The adsorbent system results in an effective sorption for selective As(V) removal.• The adsorption capacity for As(V) is higher comparing with other adsorbent systems.• Adsorption mechanism has been proposed as the most suitable considering the results.

show abstract

Section: Selectivity With Metal Ionssupporting

confidence: 88%

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Morillo

Uheida

Pérez

et al. 2015

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

show abstract

“…The results show that the activated pistachio nut shell and rice husk are very effective for the removal of platinum ions from aqueous solutions, and the maximum monolayer adsorption capacities, Q max , of platinum uptake obtained by the activated pistachio nut shell and rice husk were comparable with the data presented by scientific literature 11,20,32,33 . The adsorption capacities of activated pistachio nut shell and rice husk were much higher than that of commercial adsorbents such as activated carbon but similar adsorption capacities to other adsorbents was obtained as shown in Table 3.…”

Section: Langmuir Isothermssupporting

confidence: 78%

Platinum uptake from chloride solutions using biosorbents

2013

View full text Add to dashboard Cite

Present work investigates platinum uptake from synthetically prepared, dilute platinum-bearing solutions using biomass residues, i.e. pistachio nut shell and rice husk, which are abundant in Turkey, and provides a comparison between these two biosorbents. Effects of the different uptake parameters, sorbent dosage, contact time, temperature and pH of solution on platinum uptake (%) were studied in detail on a batch sorption. Before the pistachio nut shell was activated, platinum uptake (%) was poor compared to the rice husk. However, after the pistachio nut shell was activated at 1000 °C under an argon atmosphere, the platinum uptake (%) increased two-fold. The pistachio nut shell (original and activated) and rice husk were shown to be better than commercially available activated carbon in terms of adsorption capacity. These two sorbents have also been characterized by FTIR and SEM. Adsorption equilibrium data best complied with the Langmuir isotherm model. Maximum adsorption capacities, Q max , at 25 °C were found to be 38.31 and 42.02 mg.g -1 for the activated pistachio nut shell and rice husk, respectively. Thermodynamic calculations using the measured ∆H°, ∆S° and ∆G° values indicate that the uptake process was spontaneous and endothermic. The experimental data were shown to be fit the pseudo-second-order kinetic model.

show abstract

“…In the study conducted by Uheida et al (2006) [53], Fe 3 O 4 nanoparticles of particle size approximately 10 nm were synthesized for the recovery of palladium(II), rhodium(III), and platinum(IV) from dilute hydrochloric acid solutions. Several parameters influencing the adsorption, such as contact time, metal and solute (H + , Cl − ) concentrations, were studied.…”

Section: Magnetic Solid Phase Extraction (Mspe)mentioning

confidence: 99%

“…Generally, adsorption on magnetic adsorbents is characterized by fast kinetics as most studies reported equilibrium and maximum adsorption capacity was reached approximately after 60 min [3,14,53,58,60,81], although 12-24 h was also reported [49,76,82]. The kinetics of Au(III) ion adsorption on chitosan coated magnetic nano-adsorbent at pH 2 was investigated by Chang and Chen (2006) [82].…”

Section: Adsorption Timementioning

confidence: 99%

Magnetic Adsorbents for the Recovery of Precious Metals from Leach Solutions and Wastewater

Aghaei

Alorro

Encila

et al. 2017

Metals

View full text Add to dashboard Cite

Precious metals which include the platinum group, gold, and silver, play indispensable roles in high technology industries of the modern world due to their outstanding physical and chemical properties. As a result of diminishing availability of mineral sources, increasing demand, and environmental concerns, the recovery of precious metals from both leaching and industrial waste solutions is becoming a very important technology. Magnetic solid phase extraction (MSPE) is a technique that has received substantial consideration in the separation and recovery of precious metals because of the many advantages it offers compared to conventional methods. This technique is based on the extraction of different analytes from solutions using solid adsorbents with magnetic properties. This review focuses on different types of magnetic adsorbents, the main procedures used for synthesis, characterization and their application in precious metals recovery based on recently published literatures.

show abstract

Sorption of palladium(II), rhodium(III), and platinum(IV) on Fe3O4 nanoparticles

Cited by 161 publications

References 24 publications

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Platinum uptake from chloride solutions using biosorbents

Magnetic Adsorbents for the Recovery of Precious Metals from Leach Solutions and Wastewater

Contact Info

Product

Resources

About