Adsorption of Organic Pollutants from Wastewater Using Chitosan-Based Adsorbents

Polymers, Год журнала: 2025, Номер 17(4), С. 502 - 502

Опубликована: Фев. 14, 2025

Among the naturally occurring polysaccharides, chitosan is second-most abundant polysaccharide. It obtained from chitin through a process known as deacetylation. biodegradable, biocompatible, and non-toxic, which made it suitable for various environmental applications. In present review, structure, properties, characteristics of were discussed. addition, modified forms (including cross-linked, nanoparticles, functionalized, grafted chitosan) enumerated. The applications these in adsorption organic pollutants (such antibiotics, dyes, pesticides, microplastics, polyaromatic hydrocarbons, parabens, polychlorobiphenyls) are comprehensively reviewed. Furthermore, mechanism adsorption, isotherm (Langmuir Freundlich), kinetic models highlighted. Finally, economic viability assessment impact processing tons shrimp shells into annually

Язык: Английский

---

Highly Reusable Nano Adsorbent Based on Clay-Incorporated Hydrogel Nanocomposite for Cationic Dye Adsorption

Journal of Inorganic and Organometallic Polymers and Materials, Год журнала: 2024, Номер unknown

Опубликована: Авг. 28, 2024

Язык: Английский

---

Synthesis and swelling behavior of highly adsorbent hydrogel for the removal of brilliant green from an aqueous solution: Thermodynamic, kinetic, and isotherm models

Case Studies in Chemical and Environmental Engineering, Год журнала: 2024, Номер 10, С. 100831 - 100831

Опубликована: Июль 1, 2024

This synthesis aimed to obtain a highly stable, biodegradable, biocompatible, and swellable superabsorbent hydrogel that is ecofriendly. A new method of preparation nanocomposite based on Castor plant leaves within swelling networks developed. Therefore, Sodium Alginate-g-Poly (Itaconic acid-co-Sodium 4-Styrenesulfonate)/Castor leaves, (SA-g-P(ITA-co-NaSS)/CPL) was prepared by free radical copolymerization using potassium persulfate (KPS) as an initiator N,N-methylene bisacrylamide (MBA) cross-linker in aqueous solutions. Characterization the surface has been done Fourier-transform infrared spectroscopy (FTIR) shown all functional groups for (SA-g-P(ITA-co-NaSS)/CPL), field emission scanning electron microscopy (FESEM) displayed smooth, wrinkled versus hydrogel's rough irregular surface. BG-loaded exhibited sheet-like morphology, spherical shapes nonhomogeneous distribution, transmission (TEM) confirmed CPL interaction with matrix, evidenced dark regions, Energy dispersive X-Ray (EDX) analysis performed investigate elemental composition nanocomposite, X-ray diffraction (XRD) pattern matrix disappear hydrogel., thermogravimetric (TGA) determine thermal stability synthesized represented complete breakdown at 600–750 °C, Brunauer− Emmett−Teller (BET) shows specific area total pore volume 0.019 cm3 g−1. The effect onto Brilliant Green (BG) dye removal, exerted via adsorbent through electrostatic interactions, hydrogen bonds. Under optimal conditions (Co = 700 mg. L−1, pH 7, t 1 h, wt. 0.05 g T 25 °C), maximum adsorption efficiency BG 1260.34 higher uptake capacity resulting efficiencies above 75–95 % across broad spectrum initial concentrations, solution, temperatures. Thus, after 1h equilibrium time, it used saturation adsorbate Freundlich isotherm models pseudo-second order kinetic were found be best fitting kinetics data. Thermodynamic parameters show (ΔG < 0) spontaneous (ΔH endothermic. novelty this work being first report supported CPL, investigation its carried out model pollutant molecule, namely dye, mechanisms. promising novel absorbance, proven high up 6 sequential recycles.

Язык: Английский

---

Synthesis of geopolymer powder and beads based on red clay waste for the adsorption of methyl orange dye from aqueous solutions: Characterization, application of response surface methodology, and cost analysis

Sustainable Chemistry and Pharmacy, Год журнала: 2024, Номер 39, С. 101575 - 101575

Опубликована: Апрель 12, 2024

Язык: Английский

---

Valorization of the performance of novel and natural sodium alginate/pectin/Portulaca oleracea L. ternary composites in the adsorption of toxic methylene blue dye from the aquatic environment

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 282, С. 136867 - 136867

Опубликована: Окт. 25, 2024

Язык: Английский

---

Carboxymethyl cellulose grafted poly(acrylamide)/magnetic biochar as a novel nanocomposite hydrogel for efficient elimination of methylene blue

Biomass Conversion and Biorefinery, Год журнала: 2024, Номер unknown

Опубликована: Окт. 9, 2024

Язык: Английский

---

Waste biomass-based graphene oxide decorated with ternary metal oxide (MnO-NiO-ZnO) composite for adsorption of methylene blue dye

Cleaner Water, Год журнала: 2024, Номер unknown, С. 100049 - 100049

Опубликована: Окт. 1, 2024

Язык: Английский

---

Removal of hexavalent chromium from aqueous solutions using nano-Fe3O4/waste banana peel/alginate hydrogel biobeads as adsorbent

Biomass Conversion and Biorefinery, Год журнала: 2025, Номер unknown

Опубликована: Янв. 22, 2025

Язык: Английский

---

Evaluating sustainable agricultural waste biomass for methylene blue adsorption in wastewater treatment: A state-of-the-art review

Bioresource Technology Reports, Год журнала: 2024, Номер unknown, С. 101983 - 101983

Опубликована: Окт. 1, 2024

Язык: Английский

---

Removal Kinetics of Methylene Blue from Aquatic Medium using Hydrogel Nanocomposite Prepared by Ultrasound

Water Air & Soil Pollution, Год журнала: 2024, Номер 235(9)

Опубликована: Авг. 3, 2024

Язык: Английский

---