Preparation of chitosan/lignosulfonate for effectively removing Pb(II) in water

Zhang, Fan; Wang, Bin; Zhu, Jiangwei; Cheng, Fulong

doi:10.1016/j.polymer.2021.123878

Cited by 44 publications

(27 citation statements)

References 32 publications

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“…Figure 9, confirmed that the adsorption efficiency of CEP (95 and 79% for Pb(II) and Cd(II) after the first cycle) has been decreased to 86% for Pb(II) and 67% for Cd(II) after the fifth cycle. Similar results were reported by Rufato et al, [ 46 ] Ahmad and Mirza, [ 9 ] Zhang et al, [ 18 ] and Li et al [ 13 ] This property, cannot be improved after modification of chitosan using epichlohydrin and bidentate ligand.…”

Section: Resultssupporting

confidence: 87%

“…From the experimental data, the pseudo‐first (Equation ) and pseudo‐second (Equation ) order models were employed to study the kinetic adsorption mechanism. [ 9,11,13,15–19,25,28 ]

\ln (q_{normale} - q_{normalt}) = \ln q_{normale} - k_{1} t .

t / q_{normalt} = 1 / k_{2} {q_{e}}^{2} + t / q_{normale} .

…”

Section: Resultsmentioning

confidence: 99%

“…[13][14][15][16][17] For example, Pb(II) and Cd(II) have dangerous effects on the kidneys and nervous system. [18][19][20][21] According to World Health Organization, the concentration limit for Pb(II) and Cd(II) in drinking water are 0.01 and 0.005 ppm, respectively. [9] Therefore, removing these heavy metal ions from the environment and wastewater [18][19][20][21][22][23][24][25][26][27][28] is one of the most important goals of today's society.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

New chitosan modified with epichlohydrin and bidentate Schiff base applied to removal of Pb²⁺ and Cd²⁺ ions

Jasim

Hachem

Hussein³

et al. 2022

J Chinese Chemical Soc

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In this study, modified chitosan with epichlohydrin and bidentate Schiff base ligand (CEP) was successfully synthesized and characterized using Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), X-ray powderdiffraction (XRD), and scanning electron microscopy (SEM). In addition, its removal ability of Pb 2+ and Cd 2+ ions was studied and the effect of various parameters such as pH solution, sorbent dose, and contact time on the adsorption of Pb 2+ and Cd 2+ ions were investigated and optimized. At optimal conditions (pH of 5, contact time of 90 min, 40 ppm of Pb 2+ , Cd 2+ concentration, and 0.02 g of CEP), the maximum removal percentage of Pb 2+ and Cd 2+ ions was found to be 95 and 79%, respectively. The adsorption process followed the second-order kinetic model for Pb(II) and the first-order kinetic model for Cd(II). In addition, the effect of interface ions was investigated and it was found that the presence of divalent cations only affected the adsorption of Pb(II) and Cd(II) using CEP. Finally, the CEP adsorbent has undergone five regeneration experiments and adsorption efficiency was reduced by about 9 and 12% for Pb(II) and Cd(II) ions, respectively. Results show that the CEP has great potential for the removal of other heavy metal ions as a facile, eco-friendly, and low-cost adsorbent.

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Section: Resultssupporting

confidence: 87%

“…From the experimental data, the pseudo‐first (Equation ) and pseudo‐second (Equation ) order models were employed to study the kinetic adsorption mechanism. [ 9,11,13,15–19,25,28 ]

\ln (q_{normale} - q_{normalt}) = \ln q_{normale} - k_{1} t .

t / q_{normalt} = 1 / k_{2} {q_{e}}^{2} + t / q_{normale} .

…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

New chitosan modified with epichlohydrin and bidentate Schiff base applied to removal of Pb²⁺ and Cd²⁺ ions

Jasim

Hachem

Hussein³

et al. 2022

J Chinese Chemical Soc

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show abstract

Section: Resultsmentioning

confidence: 99%

“…By changing sorbent and conditions, metal ions removal has been changed and confirmed that the adsorption process depended on the type, surface structure, and functional groups on the sorbent. [18,[65][66][67][68][69] In order to investigate the influence of different concentrations of Na(I), K(I), Ca(II), Mg(II) cations and Cl À and NO 3 À on the removal percentage of Pb(II) and Cd(II) ions using Gd/SrFe@SBCs many experiments were performed, [8,14,21,57,62] and the results are shown in Figure 13. Results demonstrate that the anions do not have much effect on the removal percentage of Pb(II) and Cd(II) ion, while in the presence of Ca(II) and Mg(II), the removal percentage of Pb(II) and Cd(II) ion shows higher decrease than Na(I) and K(I), because they have a higher positive charge and can easily interact to the negative charge of Gd/SrFe@SBCs.…”

Section: Adsorption Studies Of Pb(ii) and Cd(ii) Ionsmentioning

confidence: 99%

Novel Gd₂O₃/SrFe₁₂O₁₉@Schiff base chitosan (Gd/SrFe@SBCs) nanocomposite as a novel magnetic sorbent for the removal of Pb(II) and Cd(II) ions from aqueous solution

Jasim

Abdelbasset

Hachem

et al. 2022

J Chinese Chemical Soc

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In this work, novel Gd2O3/SrFe12O19@Schiff base chitosan (Gd/SrFe@SBCs) nanocomposite was prepared, and characterized using FT‐IR, XRD, DSC, VSM, FE‐SEM, X‐ray energy dispersive spectrum (EDS), and map analyses. All results confirm that the Gd2O3/SrFe12O19 nanocomposite/Schiff base chitosan was successfully prepared. EDS and map analyses predict that all elements are well distributed to the compound. VSM shows that the title compound has high saturation magnetic of 17.35 emu/g with high coercivity of 4,664 Oe. In addition, Gd/SrFe@SBCs were used as new adsorbents to the removal of Pb(II) and Cd(II) ions from aqueous solution, and results confirm that the removal efficiency of Pb(II) (98%) is higher than Cd(II) (78%) ion. At best conditions, the maximum adsorption capacity for Pb(II) is 183.7 and for Cd(II) is 146.2 mg/g. Reusability results show that the adsorption efficiency of Gd/SrFe@SBCs remained above 93% for Pb(II) and 71% for Cd(II) after five adsorption/desorption cycles. The effect of coexisting cation and anions was studied and confirm that the Gd/SrFe@SBCs had selective adsorption toward Pb(II). According to these results, we proposed that Gd/SrFe@SBCs studied as a sorbent to removal of other heavy metal ions.

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Strong nanostructured film and effective lead (II) removal by nitro-oxidized cellulose nanofibrils from banana rachis

Rwegasila,

Li,

Berglund

et al. 2024

Cellulose

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Banana rachis is an abundant and renewable source of cellulose from agricultural wastes. The main focus of the current work is the nanostructured aspects and the potential for removing heavy metals from wastewater using banana rachis cellulose. Highly individualized cellulose nano brils, CNF (length = 1231 nm, diameter = 5.26 nm) with negatively charged carboxylic groups at the C6 position of different degrees of oxidations (DO) were developed through nitro oxidation (NO) followed by simple mechanical treatment. The possibility of understanding the nanostructured aspects and tailoring high puri cation e ciency is discussed. A lm prepared through vacuum ltration of the hydrocolloid suspension was strong (tensile strength = 254 MPa, Young modulus = 10.7 GPa, tensile strain = 5.7%), with the highest strength reaching 334 MPa. The highest puri cation e ciency (compared to other adsorbents in the literature data) was reached at DO = 1.466 mmol/g using an initial Pb (II) concentration of 1000 ppm and followed pseudo-secondorder kinetics. A good relationship between an increased Pb (II) removal to the DO (0.455-1.466 mmol/g) and the NOCNF concentration was observed whereby chemisorption is the primary adsorption mechanism. The NOCNF shows a maximum adsorption capacity of 1667 mg/g at the DO = 0.455 mmol/g based on the Langmuir equilibrium adsorption isotherm. The lm formation property and high Pb (II) removal behavior were attributed to a wellindividualized NOCNF, good dispersion, and high nano bril interaction. The stiff cellulose crystal was successfully preserved even at a high DO with the crystallinity index = 72%.

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Preparation of chitosan/lignosulfonate for effectively removing Pb(II) in water

Cited by 44 publications

References 32 publications

New chitosan modified with epichlohydrin and bidentate Schiff base applied to removal of Pb²⁺ and Cd²⁺ ions

New chitosan modified with epichlohydrin and bidentate Schiff base applied to removal of Pb²⁺ and Cd²⁺ ions

Novel Gd₂O₃/SrFe₁₂O₁₉@Schiff base chitosan (Gd/SrFe@SBCs) nanocomposite as a novel magnetic sorbent for the removal of Pb(II) and Cd(II) ions from aqueous solution

Strong nanostructured film and effective lead (II) removal by nitro-oxidized cellulose nanofibrils from banana rachis

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Preparation of chitosan/lignosulfonate for effectively removing Pb(II) in water

Cited by 44 publications

References 32 publications

New chitosan modified with epichlohydrin and bidentate Schiff base applied to removal of Pb2+ and Cd2+ ions

New chitosan modified with epichlohydrin and bidentate Schiff base applied to removal of Pb2+ and Cd2+ ions

Novel Gd2O3/SrFe12O19@Schiff base chitosan (Gd/SrFe@SBCs) nanocomposite as a novel magnetic sorbent for the removal of Pb(II) and Cd(II) ions from aqueous solution

Strong nanostructured film and effective lead (II) removal by nitro-oxidized cellulose nanofibrils from banana rachis

Contact Info

Product

Resources

About

New chitosan modified with epichlohydrin and bidentate Schiff base applied to removal of Pb²⁺ and Cd²⁺ ions

New chitosan modified with epichlohydrin and bidentate Schiff base applied to removal of Pb²⁺ and Cd²⁺ ions

Novel Gd₂O₃/SrFe₁₂O₁₉@Schiff base chitosan (Gd/SrFe@SBCs) nanocomposite as a novel magnetic sorbent for the removal of Pb(II) and Cd(II) ions from aqueous solution