Removal of Cadmium (II) from aqueous solution using tripolyphosphate cross-linked chitosan

Babakhani, Ataollah; Sartaj, Majid

doi:10.1016/j.jece.2020.103842

Cited by 41 publications

(14 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is recognized that the Gibbs free energy represents the degree of freedom of the sorption process, and a greater negative value implies more energetically advantageous sorption. The spontaneous The positive value of ΔH indicated the endothermic nature of the adsorption; therefore, energy is required for the procedures to occur (Pholosi et al 2020), while the positive values of ΔS reveal the increase in randomness for solid-solution interface and the value of ΔS increases in the order (Ch-Er) 3 GO 2 R 10 > (Ch-Er) 3 GO 2 > (Ch-Er) 3 which proves a respectable affinity of (Ch-Er) 3 GO 2 R 10 to absorb MB dye and Hg 2+ (Babakhani and Sartaj 2020). All the results indicated that (Ch-Er) 3 GO 2 R 10 was an efficient candidate for removing MB dye and Hg 2+ ions from aqueous solutions.…”

Section: Thermodynamic Parameters Of Adsorptionmentioning

confidence: 96%

Green synthesis of chitosan/erythritol/graphene oxide composites for simultaneous removal of some toxic species from simulated solution

Sayed

Mazrouaa

Mohamed

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

In this study, chitosan (Ch) is adapted via green methodology including sonication induced crosslinking with different weight ratios of erythritol (Er) from (Ch-Er)1 to (Ch-Er)4. The products were casted in the form of thin films. The chemical modification was proved via FTIR spectroscopy. Then, the modified products were verified via an atomic force microscopy (AFM) investigation for their topography and surface properties. The data revealed that the optimized sample was (Ch-Er)3. This sample was further modified by different weight ratios of graphene oxide 0.1, 0.2, 0.4, and 0.8 wt./wt. (symbolized as (Ch-Er)3GO1, (Ch-Er)3GO2, (Ch-Er)3GO4, and (Ch-Er)3GO8 respectively). The prepared samples were investigated by different analytical tools. Then, the adjusted sample (Ch-Er)3GO2 was irradiated by electron beam (e-beam) at 10 and 20 kGy of irradiation doses to give samples (Ch-Er)3GO2R10 and (Ch-Er)3GO2R20, respectively. The AFM data of the irradiated samples showed that the pore size decreases, and surface roughness increases at higher energy e-beam due to the formation of more crosslinking points. The optimum samples of the prepared formulations were tested as sorbent materials for simultaneous elimination of methylene blue (MB) dye and mercury cation (Hg2+) from simulated solutions. The maximum removal of both MB dye and Hg2+ cation was achieved by (Ch-Er)3GO2R10 (186.23 mg g−1 and 205 mg g−1) respectively. Graphical abstract

show abstract

Section: Thermodynamic Parameters Of Adsorptionmentioning

confidence: 96%

Green synthesis of chitosan/erythritol/graphene oxide composites for simultaneous removal of some toxic species from simulated solution

Sayed

Mazrouaa

Mohamed

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…The positive values of ∆H indicate the endothermic nature of the adsorption, so the energy is required for the reaction to occur [56]. The positive values of ∆S reveal the increase in randomness for solid-solution interface and a good affinity of the adsorbent material to absorb MB dye [57]. On the other hand, the change in the concentration of MB affected the thermodynamic parameters.…”

Section: Thermodynamic Parameters Of Adsorptionmentioning

confidence: 99%

Engineered Superabsorbent Nanocomposite Reinforced with Cellulose Nanocrystals for Remediation of Basic Dyes: Isotherm, Kinetic, and Thermodynamic Studies

2022

View full text Add to dashboard Cite

In this study, cellulose nanocrystals (CNCs) were produced from pea peels by acid hydrolysis to be used with pectin and acrylic acid (AAc) to form Pectin-PAAc/CNC nanocomposite by γ-irradiation. The structure, morphology, and properties of the nanocomposite were investigated using Fourier transform infrared spectroscopy (FTIR) and atomic force microscopy (AFM) techniques. The nanocomposite hydrogel was used for the removal of methylene blue dye (MB) from wastewater. The results revealed that the presence of CNCs in the polymeric matrix enhances the swelling and adsorption properties of Pectin-PAAc/CNC. The optimum adsorbate concentration is 70 mg/L. The kinetic experimental data were fit by pseudo-first-order (PFO), pseudo-second-order (PSO), and Avrami (Avr) kinetic models. It was found that the kinetic models fit the adsorption of MB well where the correlation coefficients of all kinetic models are higher than 0.97. The Avr kinetic model has the lowest ∆qe (normalized standard deviation) value, making it the most suitable one for describing the adsorption kinetics. The adsorption isotherm of MB by Pectin-PAAc follows the Brouers–Sotolongo model while that by Pectin-PAAc/CNC follows the Langmuir isotherm model. The negative values of ∆G confirmed the spontaneous nature of adsorption, and the positive value of ∆H indicated the endothermic nature of the adsorption.

show abstract

“…Previously, CIT and TPP have been reported to be effective CAs for CS nanoparticles and hydrogel membranes and have resulted in significant improvements in terms of mechanical properties and aqueous stability. 6,38,41,42 However, many of the studies focused on the synthesis of CS nanoparticles or beads [43][44][45][46][47] whereas those which reported the crosslinking of CS films focused on heavy metal removal from wastewater, 43,48 as well as drug delivery and tissue engineering. 33,49,50 In present study, we have demonstrated the effect of CIT and TPP concentration on the structure and properties of CS and CSGO films, as well as the optimum type and concentration of the CA for the development of crosslinked CSGO composites.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the mechanical and barrier properties of chitosan/graphene oxide composite films using trisodium citrate and sodium tripolyphosphate crosslinkers

Lyn

Tan

Zawawi

et al. 2021

J of Applied Polymer Sci

View full text Add to dashboard Cite

This study investigated the effect of ionic crosslinking on the mechanical, barrier, and optical properties of chitosan (CS) and CS/graphene oxide (CSGO) composite films using trisodium citrate (CIT) and sodium tripolyphosphate (TPP) solutions of different concentrations (0.5, 1.0. 2.0, and 3.0% w/v). Successful crosslinking was confirmed by Fourier-transform infrared spectroscopy. The hydrophilicity and light transmittance decreased significantly (p < 0.05) with the increase in concentration of both crosslinking agents. The CS films crosslinked with 3.0% w/v TPP exhibited significant (p < 0.05) improvements in barrier properties, achieving a 51% decrease of water vapor permeability and 59% decrease in oxygen permeability, in comparison to neat CS film. In addition, TPP-crosslinked CSGO films experienced an 82% and 42% improvement in tensile strength and elongation at break, respectively. Overall, crosslinked CS and CSGO films possess significantly improved properties and have great potential to be further studied as food packaging materials.

show abstract

Removal of Cadmium (II) from aqueous solution using tripolyphosphate cross-linked chitosan

Cited by 41 publications

References 70 publications

Green synthesis of chitosan/erythritol/graphene oxide composites for simultaneous removal of some toxic species from simulated solution

Green synthesis of chitosan/erythritol/graphene oxide composites for simultaneous removal of some toxic species from simulated solution

Engineered Superabsorbent Nanocomposite Reinforced with Cellulose Nanocrystals for Remediation of Basic Dyes: Isotherm, Kinetic, and Thermodynamic Studies

Enhancing the mechanical and barrier properties of chitosan/graphene oxide composite films using trisodium citrate and sodium tripolyphosphate crosslinkers

Contact Info

Product

Resources

About