Removal of V(V) ions from aqueous solutions using oxidized multi-walled carbon nanotubes

Sobhanardakani, Soheil; Zandipak, Raziyeh; Fili, Z.; Ghoochian, Mehrnaz; Sahraei, Reza; Farmany, Abbas

doi:10.2166/aqua.2015.053

Cited by 11 publications

(5 citation statements)

References 30 publications

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“…(2010) Pb(II); pH 1–6.1 (Pb 2+ ), 6.2–8.5 (Pb(OH) + ), 8.6–11 (Pb(OH) 2aq ) (Depci et al ., 2012; Duan et al ., 2005) V(III); pH 2–3 (VO 2 + ), 3.1–4 (VO(OH) 3 ), 4.1–8.5 (VO 2 (OH) 2 – ), 8.6–10 (VO 3 (OH) 2– ) (Peacock et al ., 2004). Vanadium was removed >90% from the aqueous media using oxidized MWCNTs and modified magnetic nanoparticles at pH 5 (Sobhanardakani et al ., 2015; Talebzadeh et al ., 2017). Co(II); pH 1–8.5 (Co 2+ ), 8.6–9.5 (Co(OH) – ), 9.6–12 (Co(OH) 2 ) (Dos Santos et al ., 2012; Zhang et al ., 2016).…”

Section: Resultsmentioning

confidence: 99%

Efficient removal of heavy metal ions from the water of oil‐rich regions using layered metal‐phosphate incorporated activated carbon nanocomposite

Bidhendi

Abedynia

Mirzaei

et al. 2020

Water & Environment J

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In this study, a metal-phosphate layered/activated carbon (KMSP@AC) composed of potassium (K), manganese (Mn), tin (Sn) and phosphorous (P) was prepared by the solvothermal method. The proposed nanocomposite was used as an effective adsorbent to remove Cd(II), Co(II), Ni(II), Pb(II) and V(III) from water samples in oil-rich areas prior to ICP-OES analysis. The KMSP@AC was fully characterized using FTIR, SEM and EDX. Factors influencing the removal process (pH, adsorbent dosage, initial concentration and contact time) were studied and optimized. The experimental process was evaluated with kinetic and isotherm models. The adsorption isotherm investigation showed that the adsorption followed the monolayer Langmuir isotherm model with the maximum adsorption capacities of 25 mg/g (Cd 2+), 31 mg/g (Co 2+), 49 mg/g (Ni 3+), 91 mg/g (Pb 2+) and 141 mg/g (V 3+). The kinetic studies indicated that the pseudo-second-order model is well-fitted to the process with an appropriate correlation coefficient (R 2 > 0.99) at an equilibrium time of 120 min. The adsorption of metal ions on the surface of the adsorbent was mainly a physisorption process through electrostatic interactions.

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Section: Resultsmentioning

confidence: 99%

Efficient removal of heavy metal ions from the water of oil‐rich regions using layered metal‐phosphate incorporated activated carbon nanocomposite

Bidhendi

Abedynia

Mirzaei

et al. 2020

Water & Environment J

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“…The solution was stirred for 45 min at room temperature before being mechanically shaken at 200 rpm. Different studies were performed at various parameters such as adsorption time (10-85 min), As (III) concentrations (10-60 ppm), solution pH (3)(4)(5)(6)(7)(8)(9), and nanofiber mass (2-20 mg). In addition, the adsorbed solutions were analyzed by using an atomic adsorption spectrophotometer.…”

Section: The Batch Adsorption Studymentioning

confidence: 99%

“…4,5 Even so, most of them face some challenges, such as initial, operational, and maintenance costs, energy sources required, chemical and material use, and disposal issues. 6 Adsorption, on the other hand, is a useful technique that is low in cost, and easy to operate and maintain. 7,8 Electrospun nanofibrous membranes (ENMs) are now widely used as adsorbent materials in water treatment applications because of their ability to create highly effective areas, fine fibers, porous media, and interconnected structures, resulting in higher productivity, reliability, and adsorption rate.…”

Section: Introductionmentioning

confidence: 99%

“…Precipitation, chemical oxidation, adsorption, reverse osmosis, membrane filtration, and ion exchange are just a few of the methods for removing arsenate that has already been developed 4,5 . Even so, most of them face some challenges, such as initial, operational, and maintenance costs, energy sources required, chemical and material use, and disposal issues 6 . Adsorption, on the other hand, is a useful technique that is low in cost, and easy to operate and maintain 7,8 .…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of Chitosan‐β‐cyclodextrin‐Fe nanofibers for the adsorption of As‐III from aqueous solution using a lab‐scale filtration system

Jamali

Mahar

Hussain

et al. 2023

J of Applied Polymer Sci

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Arsenate species are hazardous, toxic, and carcinogenic, they pose a significant risk to human health. In this finding, we have fabricated the Chitosan, β‐cyclodextrin and Fe2O3 (CS‐βCD‐Fe2O3) composite nanofibers through electrospinning for arsenic (As‐III) adsorption in a lab‐scale designed continuous filtration system. The SEM images have shown the bead free morphology of the prepared nanofibers and chemical composition was characterized by Fourier transforms infrared (FTIR) spectroscopy. The experimental data supported monolayer adsorptions by having a good fit to the Langmuir model. Further, kinetic studies have been conducted to illustrate the adsorption of As‐III onto CS‐βCD‐Fe2O3. The CS‐βCD‐Fe2O3 nanofibers at neutral pH have shown 83% adsorption efficiency of As‐III in the batch experiments and 72% in continuous filtration system with a flow rate of 660 mL/h. Additionally, the reusability of the nanofibers was performed, and 60% adsorption efficiency was achieved up to the 5th cycle for batch adsorption. Our prepared composite CS‐βCD‐Fe2O3 nanofibers could be used in both batch adsorption and continuous filtration system for removal of As‐III from aqueous solution.

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“…Thus, the removal of low concentration of Cr(VI) ions from wastewater is very significant (10). Various technologies have been used to remove Cr(VI) from water such as adsorption, chemical treatment, ion exchange, membrane process and electrochemical precipitation (11). Adsorption has been most widely utilized owing to availability, ease of operation, economical method and effective in comparison with other customary methods (12,13).…”

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confidence: 99%

Removal of Cr(VI) Ions from Aqueous Solutions Using Nickel Ferrite Nanoparticles: Kinetic and Equilibrium Study

Pak¹

2017

Arch Hyg Sci

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Background & Aims of the Study: Heavy metals are the most important and main pollutants because of their accumulation and high toxicity even at very low dose and cause serious hazards to ecological system as well as human health. Thus, their removal has been challenged from drinking water and industrial waters with different technologies. The purpose of this work is to investigate the removal of Cr(VI) from aqueous solutions. Materials & Methods: NiFe 2 O 4 nanoparticles was prepared by the co-precipitation method and then applied for adsorption of Cr(VI) ions from water. Characterization of nanoparticles was carried out via TEM, EDX, XRD and BET analysis. Various physicochemical parameters like the effect of contact time, pH and adsorbent dose were studied, using batch process to optimize conditions for maximum adsorption. Results: The results demonstrated that the size of the NiFe 2 O 4 nanoparticles was about 12 nm and had selectivity for Cr(VI) adsorption. Also, adsorption process was found to be fast with equilibrium time of 55 min. Optimum pH was found to be 3. Maximum adsorption capacity (q m ) as calculated from Langmuir isotherm was found to be 294.1 mg g -1 . Analysis of adsorption kinetics indicated better applicability of pseudo-second-order kinetic model. Conclusions:The results of this study represented that the synthesized NiFe 2 O 4 nanoparticles could be useful for the simultaneous removal of anionic ions from wastewaters.

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Removal of V(V) ions from aqueous solutions using oxidized multi-walled carbon nanotubes

Cited by 11 publications

References 30 publications

Efficient removal of heavy metal ions from the water of oil‐rich regions using layered metal‐phosphate incorporated activated carbon nanocomposite

Efficient removal of heavy metal ions from the water of oil‐rich regions using layered metal‐phosphate incorporated activated carbon nanocomposite

Fabrication of Chitosan‐β‐cyclodextrin‐Fe nanofibers for the adsorption of As‐III from aqueous solution using a lab‐scale filtration system

Removal of Cr(VI) Ions from Aqueous Solutions Using Nickel Ferrite Nanoparticles: Kinetic and Equilibrium Study

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