One-step synthesis of iron-rich biochar for efficient hexavalent chromium removal: Adsorption-reduction performance, mechanism and column experiments

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(2), P. 115701 - 115701

Published: Feb. 3, 2025

Language: Английский

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A novel bimetallic UiO-66 loofah sponge adsorbent prepared in situ for the efficient removal of methyl orange and Cr(VI): Batch experiments and DFT calculations

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132353 - 132353

Published: March 1, 2025

Language: Английский

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Green Synthesis of nZVI-Modified Sludge Biochar for Cr(VI) Removal in Water: Fixed-Bed Experiments and Artificial Neural Network Model Prediction

Water, Journal Year: 2025, Volume and Issue: 17(3), P. 341 - 341

Published: Jan. 25, 2025

The contamination of aquatic environments with hexavalent chromium (Cr(VI)) poses significant environmental and public health risks, necessitating the development high-performance adsorbents for its efficient removal. This study evaluates potential green-synthesized nanoscale zero-valent iron-modified sludge biochar (TP-nZVI/BC) as an effective adsorbent Cr(VI) removal through isothermal adsorption experiments, fixed-bed column studies, artificial neural network (ANN) modeling. Fixed-bed experiments demonstrated that breakthrough time, exhaustion unit capacity increased bed height. Conversely, these parameters decreased higher influent concentrations flow rates. Breakthrough curve analysis revealed Thomas model provided best fit experimental data (R2 = 0.992–0.998). An ANN model, developed using Levenberg–Marquardt algorithm, employed a single hidden layer six neurons exhibited excellent predictive performance 0.996, MSE 0.520). was validated ability to predict behavior under untested conditions, demonstrating applicability process optimization. highlights superior TP-nZVI/BC establishes theoretical basis optimizing scaling up systems findings provide valuable insights into practical application sustainable materials in remediation.

Language: Английский

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Preparation of graphene aerogel with three-dimensional soft layered structure using waste graphite as precursor for efficient removal of Cr(Ⅵ) from wastewater

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116727 - 116727

Published: April 1, 2025

Language: Английский

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Adsorption performance of Cr(VI) using Fe-containing sludge biochar co-doped with nitrogen and sulfur

Biomass Conversion and Biorefinery, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Language: Английский

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Biomass-derived in-situ carbonized ferrous sulfide for Fenton oxidation of phenol in wastewater: mechanisms, pathways, and applications

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137391 - 137391

Published: March 1, 2025

Language: Английский

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Effective removal of Cr(VI) from aqueous solutions by covalent organic framework modified with the hyper-crosslinked aniline polymer: Adsorption performance and mechanism

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 142410 - 142410

Published: April 1, 2025

Language: Английский

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Phosphorylated ZVI composites with self-activating interfaces: Synergistic multi-metal removal via in-situ Fe-Cu galvanic coupling and Zn-mediated passivation inhibition

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 163472 - 163472

Published: May 1, 2025

Language: Английский

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A novel Fe Ca composite modified biochar prepared for enhanced Cd adsorption: Experimental, DFT calculation and mechanism unveiling

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 68, P. 106565 - 106565

Published: Nov. 15, 2024

Language: Английский

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