Removal of hexavalent chromium in water by chitosan-modified Enteromorpha prolifera biochar loaded with iron-manganese oxides: Application performances and reaction mechanisms

Materials Chemistry and Physics, Год журнала: 2024, Номер 317, С. 129189 - 129189

Опубликована: Март 21, 2024

Язык: Английский

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Microwave-assisted synthesis of Zn–Fe LDH modified with magnetic oxidized hydrochar for Pb(II) removal: Insights into stability, performance and mechanism

Journal of Solid State Chemistry, Год журнала: 2024, Номер 335, С. 124689 - 124689

Опубликована: Март 28, 2024

Язык: Английский

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Highly Selective Pb(II) Adsorption by DTPA-Functionalized Graphene Oxide/Carboxymethyl Cellulose Aerogel

Langmuir, Год журнала: 2024, Номер 40(15), С. 8002 - 8014

Опубликована: Апрель 3, 2024

Graphene oxide (GO) exhibits a strong adsorption capacity for the removal of heavy metal ions from liquids, making it topic increasing interest among researchers. However, significant challenge persists in preparation graphene oxide-based adsorbents that possess both high structural stability and excellent capacity. In this paper, green environmentally friendly ternary composite aerogel based on was successfully synthesized. The enhanced through diethylenetriaminepentaacetic acid modification, while incorporation carboxymethyl cellulose improved liquid. demonstrates robust interactions between its components features multiscale porous structure. Adsorption tests conducted with Pb(II) revealed GO/DTPA/CMC (GDC) favorable study kinetics isotherms indicated process follows quasi-secondary model Freundlich model, suggesting chemical multilayer mechanism, maximum 521.917 mg/g quasi-quadratic kinetic fitting. X-ray photoelectron spectroscopy (XPS) scanning electron microscopy (SEM) analyses, performed before after adsorption, confirmed primarily occurs chelation, complexation, proton exchange, electrostatic active sites such as hydroxyl carboxyl groups. This presents an innovative strategy simultaneously enhancing properties aerogels ensuring solution stability.

Язык: Английский

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Magnetite/MXene (Fe3O4/Ti3C2) Nanocomposite as a Novel Adsorbent for Environmental Remediation of Malachite Green Dye

Molecules, Год журнала: 2024, Номер 29(6), С. 1372 - 1372

Опубликована: Март 19, 2024

In this work, a novel adsorbent called magnetite/MXene (Fe

Язык: Английский

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Leveraging Industrial Jarosite Waste for Arsenic(V) and Chromium(III) Adsorption from Water: A Preliminary Study

Applied Sciences, Год журнала: 2025, Номер 15(3), С. 1469 - 1469

Опубликована: Янв. 31, 2025

The global problem of water scarcity is exacerbated by the continued contamination potable sources. This preliminary study investigates potential a hazardous industrial jarosite waste to adsorb As(V) and Cr(III) from contaminated waters. results showed that this mining effectively adsorbed both Cr(III), demonstrating its as low-cost sustainable solution for remediation along with use also contaminates. adsorption process was optimized, effects various parameters on capacity were investigated. findings suggest toxic residues in porous concrete could provide promising approach removal heavy metals polluted sources, contributing development more environmentally friendly treatment technologies. A maximum 90.6% 96.3% achieved, it verified initially contained about 0.44% As, which later leached during decomposition; again, able re-adsorb Cr(III).

Язык: Английский

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Engineered design of MnFe2O4/CoNiFe-LTH/g-C3N4 heterocatalyst for doxycycline degradation via Fenton oxidation process: Optimization and mechanism

Surfaces and Interfaces, Год журнала: 2024, Номер 51, С. 104528 - 104528

Опубликована: Май 25, 2024

Язык: Английский

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Construction of attapulgite decorated cetylpyridinium bromide/cellulose acetate composite beads for removal of Cr (VI) ions with emphasis on mechanistic insights

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Май 28, 2024

Abstract Eco-friendly and renewable composite beads were constructed for efficient adsorptive removal of Cr (VI) ions. Attapulgite (ATP) clay decorated with cetylpyridinium bromide (CPBr) was impregnated into cellulose acetate (CA) beads, which formulated through a simple cost-effective solvent-exchange approach. FTIR, XRD, SEM, Zeta potential, XPS characterization tools verified the successful formation ATP–CPBr@CA beads. The displayed spherical porous shape positively charged surface (26.6 mV) at pH 2. In addition, higher adsorption performance accomplished by ease separation compared to their components. Meanwhile, equilibrium isotherms pointed out that Langmuir model optimal describing process maximal capacity 302 mg/g. Moreover, D–R isotherm physical process, while data obeyed pseudo-second-order kinetic model. Further, results hypothesized mechanism involves via electrostatic interactions, redox reaction, co-precipitation. Interestingly, reserved tolerable characteristics maximum present exceeding 70% after reuse seven successive cycles, proposing its feasible applicability as reusable easy-separable candidate removing heavy metals from aquatic bodies.

Язык: Английский

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Enhanced Cr(VI) removal via CPBr-modified MIL-88A@amine-functionalized GO: synthesis, performance, and mechanism

Environmental Science and Pollution Research, Год журнала: 2024, Номер 31(35), С. 47851 - 47865

Опубликована: Июль 16, 2024

Язык: Английский

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Design of biocompatible gelatin hydrogels reinforced with magnetite nanoparticles: Effective removal of chromium from water environment

Environmental Research, Год журнала: 2024, Номер 260, С. 119768 - 119768

Опубликована: Авг. 10, 2024

Язык: Английский

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Reel silk from cocoons: Optimized fabrication of chitosan-sodium tripolyphosphate imprinted polymers for high-efficiency and selective capture of hexavalent chromium

Separation and Purification Technology, Год журнала: 2024, Номер 354, С. 129182 - 129182

Опубликована: Авг. 10, 2024

Язык: Английский

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