Polyethyleneimine grafted starch nanocrystals as a novel biosorbent for efficient removal of methyl blue dye

Chen, Qijie; Zhao, Yalan; Xie, Qionghua; Liang, Chunyan; Zong, ZhangYang

doi:10.1016/j.carbpol.2021.118579

Cited by 41 publications

(1 citation statement)

References 45 publications

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“…Dyes have been widely used in textiles, coatings, paint, plastic, and other industries which make people's lives become colorful [1][2][3][4][5][6]. Meanwhile, environmental pollution has become increasingly serious owing to the discharge of a great deal of dye wastewater, especially, the nondegradable substances and aromatic and other organics of dyes that make the water eutrophication and absorbed by plants; many of them have serious harm to the environment and eventually enter the human body through the food chain that has a great threat to human health [7][8][9][10][11]. Hence, solving dye pollution has become a serious problem.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Characteristics and Electrochemical Behaviors of Methyl Blue onto Magnetic Mg_xCo_yZn_(1-x-y)Fe₂O₄ Nanoparticles

Yang

Han

et al. 2023

Adsorption Science & Technology

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Magnetic MgxCoyZn(1-x-y)Fe2O4 nanoparticles were successfully prepared by the rapid combustion approach, and SEM, XRD, VSM, EDX, and FTIR techniques were applied for their characterization. The influence of the element ratios (Mg2+, Co2+, and Zn2+) in magnetic MgxCoyZn(1-x-y)Fe2O4 nanoparticles on their properties was explored. To acquire a larger specific surface area for better adsorption of methyl blue (MB), magnetic Mg0.4Co0.5Zn0.1Fe2O4 nanoparticles calcined at 400°C for 2 h with 25 mL anhydrous ethanol were selected, and their average particle size and the saturation magnetization were about 81.3 nm and 13.5 emu·g-1, respectively. Adsorption kinetics models and adsorption isotherm models were applied to research the adsorption characteristics of MB onto magnetic Mg0.4Co0.5Zn0.1Fe2O4 nanoparticles. The pseudo-second-order kinetics model ( R 2 > 0.99 ) and Temkin isotherm model ( R 2 = 0.9887 ) were the most consistent with the data, indicating that the adsorption was the chemical multilayer adsorption mechanism, and the process was an exothermic reaction. The E of the Dubinin-Radushkevich (D-R) isotherm model was 0.2347 KJ·mol-1, indicating the adsorption involved physical adsorption besides chemical adsorption. The Δ G 0 and Δ H 0 ( Δ H 0 = − 10.38 KJ·mol-1) of the adsorption process of MB adsorbed onto magnetic Mg0.4Co0.5Zn0.1Fe2O4 nanoparticles measured through the thermodynamic experiment were both less than 0, which proved that the process was a spontaneous exothermic reaction. The adsorption capacity of MB onto magnetic Mg0.4Co0.5Zn0.1Fe2O4 nanoparticles increased with the pH of MB solution increasing from 2 to 4 at room temperature, and it had no significant change when the pH of MB solution was 4-12, while the relative removal rate was 98.75% of the first one after 2 cycles. The electrochemical impedance spectroscopy (EIS) and the cyclic voltammetry (CV) data further demonstrated that MB was adsorbed onto magnetic Mg0.4Co0.5Zn0.1Fe2O4 nanoparticles.

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Section: Introductionmentioning

confidence: 99%

Adsorption Characteristics and Electrochemical Behaviors of Methyl Blue onto Magnetic Mg_xCo_yZn_(1-x-y)Fe₂O₄ Nanoparticles

Yang

Han

et al. 2023

Adsorption Science & Technology

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Remove hazardous textile dyes using polyampholytes derived from polyethyleneimine

Reyes‐Angeles,

Trejo‐Carbajal,

Caldera‐Villalobos

et al. 2024

J of Applied Polymer Sci

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Many processes can be used to remove toxic pollutants from wastewater. Adsorption process has been an important issue in water pollution control. In this research, work describes a facile procedure for synthetizing two polyampholytes through chemical modification of polyethyleneimine and their efficacy as adsorbent materials. The presence of amino and sulfonic acid groups in both polyelectrolytes gives them the property of ionic exchange, classifying them as polyampholytes. The adsorptive properties of both polyelectrolytes were evaluated in aqueous solutions with two acid dyes, Congo Red (DR28) and Eriochrome Black (MB11), and two basic dyes, Malachite Green (BG4) and Methylene Blue (BB9). These dyes possess anionic or cationic groups that interact electrostatically with these new polyampholytes that allow the adsorption. The kinetic study of adsorption for both polyelectrolytes, with all dyes, fits well with the pseudo second order model, demonstrating the chemisorption process. The adsorption percentage of both polyelectrolytes with cationic dyes is closer to 100%. The polyampholytes show adsorption capacity values ranging, with cationic dyes, from 270 to 416 mg g−1, as conventional ion exchange resins.

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Fabrication and performance evaluation of an innovative asymmetric polyethersulfone composite membrane for efficient methyl blue filtration

Wu,

Ma,

Pang

et al. 2024

J of Applied Polymer Sci

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Given the toxicity of wastewater pollutants to both humans and the environment, it is critical to develop a new synthetic membrane with superior permeability and rejection. Herein, a novel asymmetric polyethersulfone (PES) composite filtration membrane was successfully prepared using a simple alternating vacuum‐deposition process with positively charged chitosan and negatively charged cellulose nanofibrils as polycations and polyanions, respectively. As expected, the produced PES composite filtration membranes had a compressed and negatively charged surface, which prevented the anionic dye methyl blue (MB) molecules from infiltrating into the membrane matrix. Consequently, the resulting PES composite filtration membranes exhibited an extremely high MB rejection (99.7%) and a satisfactory flux (37.47 L h−1 m−2 MPa−1). In addition, the composite membrane demonstrated extremely selective removal of anionic dyes in the presence of neutral dyes due to the Donnan effect. Furthermore, the developed PES composite filtration membranes displayed exceptional long‐term stability (99.8% rejection and 36.5 L h−1 m−2 MPa−1 flux after 50 h of filtration) and recycling properties (90.1% flux recovery rate after 3 cycles of running). In conclusion, the PES composite filtration membranes prepared in this study presented great potential in wastewater filtering.

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Polyethyleneimine grafted starch nanocrystals as a novel biosorbent for efficient removal of methyl blue dye

Cited by 41 publications

References 45 publications

Adsorption Characteristics and Electrochemical Behaviors of Methyl Blue onto Magnetic Mg_xCo_yZn_(1-x-y)Fe₂O₄ Nanoparticles

Adsorption Characteristics and Electrochemical Behaviors of Methyl Blue onto Magnetic Mg_xCo_yZn_(1-x-y)Fe₂O₄ Nanoparticles

Remove hazardous textile dyes using polyampholytes derived from polyethyleneimine

Fabrication and performance evaluation of an innovative asymmetric polyethersulfone composite membrane for efficient methyl blue filtration

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Polyethyleneimine grafted starch nanocrystals as a novel biosorbent for efficient removal of methyl blue dye

Cited by 41 publications

References 45 publications

Adsorption Characteristics and Electrochemical Behaviors of Methyl Blue onto Magnetic MgxCoyZn(1-x-y)Fe2O4 Nanoparticles

Adsorption Characteristics and Electrochemical Behaviors of Methyl Blue onto Magnetic MgxCoyZn(1-x-y)Fe2O4 Nanoparticles

Remove hazardous textile dyes using polyampholytes derived from polyethyleneimine

Fabrication and performance evaluation of an innovative asymmetric polyethersulfone composite membrane for efficient methyl blue filtration

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Product

Resources

About

Adsorption Characteristics and Electrochemical Behaviors of Methyl Blue onto Magnetic Mg_xCo_yZn_(1-x-y)Fe₂O₄ Nanoparticles

Adsorption Characteristics and Electrochemical Behaviors of Methyl Blue onto Magnetic Mg_xCo_yZn_(1-x-y)Fe₂O₄ Nanoparticles