Copper (II) ions adsorption from aqueous solutions using electrospun chitosan/peo nanofibres: Effects of process variables and process optimization

Lakhdhar, Ichrak; Mangin, Patrice; Chabot, Bruno

doi:10.1016/j.jwpe.2015.07.004

Cited by 36 publications

(12 citation statements)

References 35 publications

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“…Water contamination, especially by toxic heavy metals, has become a major concern over the last decades around the world [1][2][3]. This is particularly the case in developing and fast-growing countries where rapid industrialization increases demand for water with clear effects on the supply of safe drinking water and access to adequate sanitation services for the population [4,5]. In such cases, heavy metal wastewaters are in some way discharged into the environment.…”

Section: Introductionmentioning

confidence: 99%

Chitosan-PEO nanofiber mats for copper removal in aqueous solution using a new versatile electrospinning collector

2020

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Electrospun chitosan-polyethylene oxide nanofiber mats were fabricated using a new collector design. Besides being reusable, it allows to assess the desired morphology of the mat in a quicker way. To test its efficiency, nonwoven mats designed for water treatment applications were prepared using conditions never been reported before. Under these conditions, continuous and flawless nanofibers of 151 ± 36 nm in diameter were achieved. Adsorption capacity of the mats for copper ions in aqueous solutions were investigated. Results showed that sorption equilibrium was achieved within 150 min with a homogenous distribution of copper ions within the nanofibrous mats. The pseudo-second order kinetic model best fitted the experimental data. The Langmuir isotherm best described the sorption process with a maximum adsorption capacity of 124 mg/g for trial temperatures ranging from 25 to 60 °C. Thermodynamic parameters (ΔG°, ΔH° and ΔS°) demonstrate that the adsorption was feasible, endothermic and spontaneous. The desorption potential and mat's reusability were also studied. Results reveal that the electrospun chitosan mats can be desorbed and reused up to 5 cycles without significant loss in adsorption performance.

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Section: Introductionmentioning

confidence: 99%

Chitosan-PEO nanofiber mats for copper removal in aqueous solution using a new versatile electrospinning collector

2020

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“…According to the results (Exhibits 3 and 4), the increase of pH resulted into increase in the uptake of Zn 2+ and Cu 2+ ions on the carbon black nanoparticles, and the highest amount adsorption of Zn 2+ and Cu 2+ ions was observed at pH of 11. The reason for this process is that increasing hydrogen ions at low pH leads to more competition with Zn 2+ and Cu 2+ cations and adsorption by carbon black nanoparticles, and finally the efficiency of Zn 2+ and Cu 2+ ions adsorbed decreased (Lakhdhar, Mangin, & Chabot, 2015). The result of this study is consistent with the results of other studies which investigated the removal of Zn 2+ and Cu 2+ ions by various adsorbents (Jin et al., 2016; Lakhdhar et al., 2015).…”

Section: Resultsmentioning

confidence: 99%

“…Although the efficiency of the adsorption process has increased, the adsorption capacity of the process has been significantly reduced; the adsorption capacity of zinc and copper ions, respectively, decreased from 45.34 and 49.46 mg/g to 67.9 and 9.69 mg/g. The reason for this trend is that by increasing adsorbent dosage under constant conditions, the count of active sites at the adsorbent level and to follow the efficiency of the adsorption process increases (Lakhdhar et al., 2015). By increasing the adsorbent in the constant concentration of ions, adsorbent active sites remain unsaturated and the ion adsorption capacity is reduced by carbon black nanoparticles (Veli & Alyüz, 2007).…”

Section: Resultsmentioning

confidence: 99%

Performance evaluation of carbon black nanoparticles for removal of zinc and copper metal ions from aqueous solution: A kinetics and thermodynamics study

Mortazavi

Derakhshani

Rezaei

et al. 2020

Environmental Quality Mgmt

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Water pollution with heavy metals is a major concern/threat posed to human health. Heavy metals such as zinc and copper, because of their cumulative effects on humans and other organisms, have harmful effects. This research was an experimental study in which effects of variables such as pH, contact time, concentrations of zinc and copper, adsorbent dose, and temperature were investigated on the efficiency of the adsorption process. Data were analyzed with different isotherms, and the kinetics and thermodynamics of the process were also determined. The results showed that the adsorption capacity increased by increasing pH, contact time, the concentration of zinc and copper, and reduction of the adsorbent dose. The adsorption capacity of carbon black nanoparticles for Zn and Cu was 34.56 and 47.36 mg/g, respectively. Comparison of the results of R2 showed that adsorption of Zn and Cu ions followed the Freundlich and Langmuir models, respectively. The results showed that carbon black nanoparticles can be an effective adsorbent for the removal of zinc and copper ions from aqueous solutions, the price of their synthesis is lower than that of many other nanoparticles, and they can be used in real terms.

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“…Similar nanofibers were also used for adsorption of Cu(II) ions from water used in paper making industry. They found to be highly efficient adsorbent for copper ions with 94.7% removal efficiency by using only 75 mg of nanofibers [114].…”

Section: Chitosan Nanofibers For the Removal Of Heavy Metal Ionsmentioning

confidence: 99%

A Review on Chitosan for the Removal of Heavy Metals Ions

Zia¹,

Tabassum²,

Gong³

et al. 2019

JFBI

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There has recently been an increasing interest in water treatment methods as a result of growing concerns over shortages of clean water. This paper aims to review the past and present researches on chitosan for the adsorption of heavy metals from the wastewater. Adsorption is considered to be the most efficient method for the removal of metal impurities from drinking water. Chitosan, a deacetylated derivative of chitin, has many commercial applications due to its biocompatibility, nontoxicity, and biodegradability. Moreover, amine groups are present on the backbone of chitosan. For this reason, chitosan has been used for the adsorption of heavy metals. To begin with, mechanism of adsorption of heavy metal ions on chitosan and disadvantages of heavy metal ions were reviewed. Further, a detailed review had been done on the adsorption capacities of crosslinked chitosan, chitosan nanofibers, chitosan nanoparticles, chitosan composites, modified/pure chitosan, and porous chitosan. Lastly, research gaps and future recommendations were given for further development and accurate results of adsorption.

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Copper (II) ions adsorption from aqueous solutions using electrospun chitosan/peo nanofibres: Effects of process variables and process optimization

Cited by 36 publications

References 35 publications

Chitosan-PEO nanofiber mats for copper removal in aqueous solution using a new versatile electrospinning collector

Chitosan-PEO nanofiber mats for copper removal in aqueous solution using a new versatile electrospinning collector

Performance evaluation of carbon black nanoparticles for removal of zinc and copper metal ions from aqueous solution: A kinetics and thermodynamics study

A Review on Chitosan for the Removal of Heavy Metals Ions

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