Research Advances in Natural Polymers for Environmental Remediation

Polymers, Journal Year: 2025, Volume and Issue: 17(5), P. 559 - 559

Published: Feb. 20, 2025

The search for sustainable and efficient remediation techniques is required to control increasing environmental pollution caused by synthetic dyes, heavy metal ions, other harmful pollutants. From this point of view, natural polymers like chitosan, cellulose, lignin, pectin have been found highly promising due their biodegradability, availability, possibility chemical functionalization. Natural possess inherent adsorption properties that can be further enhanced cross-linking surface activation. This review discusses the main properties, mechanisms, functional groups such as hydroxyl, carboxyl, amino responsible pollutant sequestration. paper also emphasizes effectiveness in removing metals dyes from wastewater recent advances polymer modifications, including ionic crosslinking grafting. study underlines ecological potential polymer-based adsorbents treatment protection environment a solution challenges.

Language: Английский

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Facile Synthesis of Cross-Linked Chitosan-Genipin/Algae Composite Adsorbent for Cationic Methyl Violet Dye Removal: Robust Modeling of Adsorption Using the Box–Behnken Design

Journal of Inorganic and Organometallic Polymers and Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 24, 2024

Language: Английский

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A chitosan-Staphylococcus epidermidis bacterial biocomposite adsorbent for removal of reactive orange 16 dye: Box–Behnken design optimization

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 142752 - 142752

Published: April 1, 2025

Language: Английский

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Mild sulfonation process of food grade algae for removal of methyl violet and methylene blue toxic dyes: Statistical modelling and desirability function optimization

Algal Research, Journal Year: 2025, Volume and Issue: unknown, P. 104040 - 104040

Published: April 1, 2025

Language: Английский

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Adsorptive performance of sustainable biosorbent from Macadamia integrifoli shell powder for toxic methylene blue dye removal: desirability functions and dye uptake mechanism

International Journal of Phytoremediation, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 16

Published: April 25, 2025

Herein, the potential of Macadamia integrifolia nutshell powder (MSP) as a sustainable, renewable, and cost-effective biosorbent for methylene blue (MB) dye was evaluated. The physicochemical properties MSP were characterized via XRD, FTIR, FESEM-EDX, pHpzc analysis. biosorption process optimized using Box-Behnken design (RSM-BBD), to evaluate influence dose (0.02-0.1 g/100 mL), contact time (20-300 min), solution pH (4-10). desirability function further refined validated BBD results, demonstrating that maximum MB removal (98.7%) achieved at an 0.09 mL, 276.1 min, 8.7. Kinetic modeling indicated onto conformed pseudo-second order (PSO) model. intraparticle diffusion (IPD) model supports multi-step adsorption process, consisting surface adsorption, gradual diffusion, equilibrium stages. data well described by Langmuir Freundlich isotherm models, confirming combination monolayer multilayer profiles. capacity (qmax) estimated be 128.3 mg/g. mechanism attributed hydrogen bonding, π-π interactions, electrostatic forces, pore filling, evidenced spectroscopy bioadsorbent morphology results. reusability study demonstrated retained significant over multiple cycles, highlighting its moderate recyclability. These findings establish highly efficient, scalable, environmentally sustainable removal, offering practical wastewater treatment applications options water management.

Language: Английский

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Biocomposite of nontronite/Enteromorpha sp. for cationic methylene blue dye removal: optimization, kinetics, and isothermal thermodynamics study

Biomass Conversion and Biorefinery, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 13, 2024

Language: Английский

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Hydrothermal fabrication of composite chitosan grafted salicylaldehyde/coal fly ash/algae for malachite green dye removal: A statistical optimization

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 280, P. 135897 - 135897

Published: Sept. 21, 2024

Language: Английский

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Facile Preparation of Cross-Linked Moringa oleifera Seed Hulls Powder/Hydroxyapatite Framework Composite for Efficient Removal of Toluidine Blue and Methyl Violet 2B from Aqueous Solution

Journal of Inorganic and Organometallic Polymers and Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 23, 2024

Abstract In this study, adsorption of two cationic dyes, Toluidine Blue (TB) and Methyl violet 2B (MV 2B) from an aqueous solution was achieved by using multifunctional composite material. The formulation the (MO@HA) obtained Moringa oleifera seed hull powder, calcium chloride (CaCl 2 ), ammonium hydrogenophosphate (NH 4 ) HPO salts. Surface morphology, functional groups, specific surface area, charge were explored Scanning electron microscopy (SEM), Fourier Transform infrared spectroscopy (FTIR), BET analysis, point zero (PZC), respectively. material resulted in a structural change adsorbents, increased oxygen vacancies, enhancement active sites, area 735.55 m g −1 . Different parameters such as pH, contact time, adsorbent dosage, initial concentration evaluated. study showed that equilibrium reached after 60 min, optimum pH for both dyes (TB MV 6. Langmuir, Freundlich, Liu, Temkin fitted to describe isotherm, TB had best correlation with Liu isotherm. maximum capacity 341.488 182.453 mg , Adsorption-desorption cycling studies on confirmed its regeneration reusability 5 cycles. A possible mechanism involving electrostatic interactions, n-π bonding, hydrogen bonding suggested. These findings highlight new direction development efficient sustainable environmental remediation, specifically removal solution.

Language: Английский

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Design of chitosan and watermelon (Citrullus lanatus) seed shell composite adsorbent for reactive orange 16 dye removal: multivariable optimization and dye adsorption mechanism study

Biomass Conversion and Biorefinery, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 30, 2024

Language: Английский

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