Development of a bio-based sorbent media for the removal of nickel ions from aqueous solutions

Lakhdhar, Ichrak; Belosinschi, Dan; Mangin, Patrice; Chabot, Bruno

doi:10.1016/j.jece.2016.06.026

Cited by 38 publications

(17 citation statements)

References 42 publications

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“…A similar behavior was observed by other authors [13,31,46,47]. However, according to the literature [31,48], the plots of the first-order equation are only suitable in the first stage (20-30 min) of interaction and not for the entire range of contact times. Chitosan is actually well known for binding metal ions to the nanofibers surface via a chelation process by exchanging electron pairs with amino groups.…”

Section: Copper Adsorption Kineticssupporting

confidence: 84%

“…1 At the end of the electrospinning process, the nanofibrous mat was removed from the frame and dried in an oven at 75 °C for 24 h. Then, the nanofibers were neutralized with a solution of Na 2 CO 3 0.1 M for 3 h in order to hold their morphology in aqueous solution. The mat was then washed with distilled water until the pH of the wash water was 6 and finally dried at room temperature [31].…”

Section: Nanofibrous Mat Preparationmentioning

confidence: 99%

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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: Copper Adsorption Kineticssupporting

confidence: 84%

Section: Nanofibrous Mat Preparationmentioning

confidence: 99%

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

2020

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“…Adsorption is one of the most used conventional process to remediate wastewater due to its simplicity, ease and rapid application and manipulation, the potential use of many natural materials (low cost) and synthetic materials as adsorbents. [33][34][35][36][37][38][39] Mesoporous materials (MCM-41/HMS) have high surface area, narrow pore size distribution, tunable texture and surface properties, and a relative chemical inertness. These properties recommend their applications in sorption, catalysis, separation, sensors, hosts and numerous other elds.…”

Section: Pb(ii) Adsorption Studiesmentioning

confidence: 99%

Schiff base-functionalized mesoporous silicas (MCM-41, HMS) as Pb(ii) adsorbents

et al. 2018

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“…The adsorption potential (ε) is given by equation 11 [29,31,32]. C e and q e were calculated from molarity in the fitting and q max was reported in mg g −1 in Table 4.…”

Section: Dubinin-radushkevich (D-r) and Dubinin-astakhov (D-a) Isothermsmentioning

confidence: 99%

Development and treatment procedure of arsenic-contaminated water using a new and green chitosan sorbent: kinetic, isotherm, thermodynamic and dynamic studies

Brion-Roby

Gagnon

Deschênes

et al. 2017

Pure and Applied Chemistry

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Arsenic is classified as one of the most toxic elements for humans by the World Health Organization (WHO). With the tightening drinking water regulation to 10 μg L −1 by the WHO, it is necessary to find efficient sorbent materials for arsenic. In this work, the removal of arsenic(V) from water is achieved with an insoluble chitosan sorbent in the protonated form obtained by a simple heating process. Kinetic studies show a very fast sorption (less than 10 min). The Langmuir isotherm model is best describing experimental data with a capacity of 42 mg g −1 at pH 8. The sorption process is based on anion exchange (chemisorption) determined from the Dubinin-Radushkevich model. The sorption efficiency of the chitosan sorbent is 97 % at low concentrations (e.g. 100 μg L −1). Thermodynamic analysis reveals that the sorption process is exothermic and is controlled by enthalpic factors. Breakthrough curves (BTC) were acquired in real-time by instrumental chromatography and was better described by the Thomas model. BTC from column sorption and desorption with a salt solution suggest that this sorbent is relevant for large scale applications. With this new renewable product, it will be possible to treat arsenic contaminated water at low cost and with little waste (concentration factor of 1500).

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Development of a bio-based sorbent media for the removal of nickel ions from aqueous solutions

Cited by 38 publications

References 42 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

Schiff base-functionalized mesoporous silicas (MCM-41, HMS) as Pb(ii) adsorbents

Development and treatment procedure of arsenic-contaminated water using a new and green chitosan sorbent: kinetic, isotherm, thermodynamic and dynamic studies

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