Study on the adsorption behavior of glutaric acid modified Pb(II) imprinted chitosan-based composite membrane to Pb(II) in aqueous solution

Li, Xiaohua; Liu, Yumei; Zhang, Jinlong; Zhao, Mengqi; Zhu, Kuan Jun

doi:10.1016/j.matlet.2019.04.101

Cited by 26 publications

(8 citation statements)

References 18 publications

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“…Generally speaking, higher concentration of initial Pb(II) aqueous solution benefits the achievement of higher adsorption capacity of Pb(II). When the initial Pb(II) concentration reaches 1.7 mg/mL, the adsorption capacity climbs to a plateau (114.6 mg/g), much higher than the values achieved by applying a silica-based molecularly imprinted mesoporous polymer (23.8 mg/g) [ 30 ] and a chitosan-based composite membrane (76.6 mg/g) [ 31 ]. However, there is no evident increase of Q e value for CPIT if the initial Ph(II) concentration exceeds 1.7 mg/mL.…”

Section: Resultsmentioning

confidence: 99%

Cassava Starch-Based Thermo-Responsive Pb(II)-Imprinted Material: Preparation and Adsorption Performance on Pb(II)

Zhang

et al. 2022

Polymers

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Heavy metal pollution is currently an increasing threat to the ecological environment, and the development of novel absorbents with remarkable adsorption performance and cost-effectiveness are highly desired. In this study, a cassava starch-based Pb(II)-imprinted thermo-responsive hydrogel (CPIT) had been prepared by using cassava starch as the bio-substrate, N-isopropyl acrylamide (NIPAM) as the thermo-responsive monomer, and Pb(II) as the template ions. Later, a variety of modern techniques including FTIR, DSC, SEM, and TGA were employed to comprehensively analyze the characteristic functional groups, thermo-responsibility, morphology, and thermal stability of CPIT. The obtained material exhibited superior performance in adsorption of Pb(II) and its maximum adsorption capacity was high—up to 114.6 mg/g under optimized conditions. Notably, the subsequent desorption (regeneration) process was fairly convenient by simply rinsing with cold deionized water and the highest desorption efficiency could be achieved as 93.8%. More importantly, the adsorption capacity of regenerated CPIT still maintained 88.2% of the value of starting material even after 10 recyclings. In addition, the excellence of CPIT in selective adsorption of Pb(II) should also be highlighted as its superior adsorption ability (97.9 mg/g) over the other seven interfering metal ions.

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Section: Resultsmentioning

confidence: 99%

Cassava Starch-Based Thermo-Responsive Pb(II)-Imprinted Material: Preparation and Adsorption Performance on Pb(II)

Zhang

et al. 2022

Polymers

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“…grafted crosslinked chitosan beads (G/ECH-CS) 0.47 0.19 0.14 [44] Modified chitosan beads 2.21 1.58 [28] Glutaric acid modified Pb (II) imprinted chitosan-based composite membrane 0.36 [45] bentonite-chitosan composite 0.39 0.84 [46] CH-ANP 2.82 1.60 1.96 Present Work…”

Section: Methodsmentioning

confidence: 99%

Engineering Functionalized Chitosan-Based Sorbent Material: Characterization and Sorption of Toxic Elements

et al. 2019

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The present study reports the engineering of functionalized chitosan (CH)-based biosorbent material. Herein, a two-step reaction was performed to chemically modify the CH using 1,4-bis(3-aminopropyl) piperazine to incorporate nitrogen basic centers for cations sorption from the aqueous environment. The resultant functionalized chitosan-based sorbent material was designated as CH-ANP and characterized using various analytical techniques, including elemental analysis, Fourier-transform infrared spectroscopy (FTIR), 13C NMR (in solid-state), X-ray diffraction, and thermal analysis. Then, the newly engineered CH-ANP was employed for the removal of copper, lead, and cadmium in the aqueous medium. Langmuir sorption isotherm analysis revealed that the highest sorption abilities achieved were 2.82, 1.96, and 1.60 mmol g−1 for copper, cadmium, and lead, respectively. Linear and nonlinear regression methods were deployed on the sorption data to study the behavior of the Langmuir, the Freundlich, and the Temkin sorption isotherms. Among the four different forms, the Langmuir isotherm type 1 fit well to the experimental data as compared to the other models. It also showed the lowest values of error, and a higher correlation coefficient than the Freundlich and Temkin models; thus it was the best fit with the experimental data compared to the latter two models. In conclusion, the findings suggest that chemically modified novel materials with enhanced Lewis basic centers are useful and promising candidates for the sorption of various toxic cations in aqueous solution.

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“…It is widely used in food additives, for the detection of bioactive molecules, in environmental analysis, in biosensor fields, in biomedical fields and in other everyday chemical industries [ 23 ]. The existence of a large number of polar groups, such as the hydroxyl and amino groups, allows chitosan to react with other components [ 24 ]. The combination of these two substances will cause changes in the physical and chemical properties, such as adsorption, film-forming, permeability and fiber forming [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

The Separation of Chlorobenzene Compounds from Environmental Water Using a Magnetic Molecularly Imprinted Chitosan Membrane

Wang

Zhu

et al. 2022

Polymers

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In this work, a magnetic molecularly imprinted chitosan membrane (MMICM) was synthesized for the extraction of chlorobenzene compounds in environmental water using the membrane separation method. The optimal extraction amount for chlorobenzene (9.64 mg·L−1) was found to be a 1:2 solid to liquid ratio, with a 20 min extraction time and 35 °C extraction temperature. This method proved to be successfully applied for the separation and trace quantification of chlorobenzene compounds in environmental water, with the limit of detection (LOD) (0.0016–0.057 ng·L−1), limit of quantification (LOQ) (0.0026–0.098 ng·L−1), and the recoveries ranging (89.02–106.97%).

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Study on the adsorption behavior of glutaric acid modified Pb(II) imprinted chitosan-based composite membrane to Pb(II) in aqueous solution

Cited by 26 publications

References 18 publications

Cassava Starch-Based Thermo-Responsive Pb(II)-Imprinted Material: Preparation and Adsorption Performance on Pb(II)

Cassava Starch-Based Thermo-Responsive Pb(II)-Imprinted Material: Preparation and Adsorption Performance on Pb(II)

Engineering Functionalized Chitosan-Based Sorbent Material: Characterization and Sorption of Toxic Elements

The Separation of Chlorobenzene Compounds from Environmental Water Using a Magnetic Molecularly Imprinted Chitosan Membrane

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