Efficient removal of methylene blue by activated hydrochar prepared by hydrothermal carbonization and NaOH activation of sugarcane bagasse and phosphoric acid

RSC Advances, Journal Year: 2022, Volume and Issue: 12(3), P. 1885 - 1896

Published: Jan. 1, 2022

Activated-hydrochar (AHC) derived from sugarcane bagasse was synthesized by hydrothermal carbonization (HTC) using phosphoric acid and sodium hydroxide (NaOH) as activators.

Language: Английский

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Superior adsorption and removal of industrial dye from aqueous solution via magnetic silver metal-organic framework nanocomposite

Environmental Technology, Journal Year: 2023, Volume and Issue: 45(13), P. 2558 - 2574

Published: Feb. 7, 2023

The indirect emission had a negative influence on the ecosystem of enormous amounts harmful dyes into water. Fe3O4@Ag-MOF was successfully fabricated to capture Gentine violet (GV)) as model example cationic dye from their aqueous solutions evaluated in this search method eliminate water contaminants. FTIR, XPS, BET, TGA, SEM, TEM, and XRD have all been used study adsorbent order determine its structural chemical characteristics well interpret binding mechanisms. According results characterization, synthesized composite size about 45 nm, surface area 856.06 m2/g, considerable magnetic (66.2 emug−1). Consequently, we created mesoporous surfaces that strong ability interface absorb GV dye. It is possible use pseudo-second rate equation characterize kinetic profile., while Langmuir fits isotherm models. At pH 9, maximum sorption capacities can reach 1.68 mmol.g−1. Additionally, investigations temperature profiles indicated endothermic process Thermodynamic parameters were discovered as, ΔG°, ΔH° ΔS° an interestingly high reusability > 92 percent up sixth cycle. These findings revealed mixture electrostatic interactions, π-π stacking, hydrogen bonds, pore filling involved adsorption mechanism. successful demonstrating effectiveness point-of-use colour collection candidate actual dyeing effluents.

Language: Английский

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Co-hydrothermal valorization of food waste: process optimization, characterization, and water decolorization application

Biomass Conversion and Biorefinery, Journal Year: 2023, Volume and Issue: 14(14), P. 15757 - 15768

Published: Jan. 4, 2023

Language: Английский

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Efficient removal of Congo red and methylene blue using biochar from Medulla Tetrapanacis modified by potassium carbonate

Bioresource Technology, Journal Year: 2023, Volume and Issue: 376, P. 128912 - 128912

Published: March 17, 2023

Language: Английский

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Magnetic hydrochar grafted-chitosan for enhanced efficient adsorption of malachite green dye from aqueous solutions: Modeling, adsorption behavior, and mechanism analysis

International Journal of Biological Macromolecules, Journal Year: 2023, Volume and Issue: 254, P. 127767 - 127767

Published: Oct. 30, 2023

Language: Английский

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Understanding the rate-limiting step adsorption kinetics onto biomaterials for mechanism adsorption control

Progress in Reaction Kinetics and Mechanism, Journal Year: 2024, Volume and Issue: 49

Published: Jan. 1, 2024

Biomaterials are a class of porous materials that have been widely exploited over the past two decades. However, implications controlling adsorption by rate-limiting steps still not adequately established. Identifying step is promising approach for design systems. In this review, we study in detail dyes aqueous media on biomaterials to rationalize factors governing involved process using empirical kinetics and mass transfer models. This knowledge then applied identify best fit these models rate-controlling process, which crucial system. review first studies limiting an medium biomaterials. Kinetic modeling used better understand rate control biosorption. Generally, equations come from following categories: agricultural industrial waste, algae, fungi, bacteria, plants. most reported pseudo second-order model was found be suited fitting kinetic data biomaterials, indicating chemisorption controls adsorption. Concerning diffusion effects transfer, intraparticle among often examine controlled both film diffusion. The takes place when external greater than internal while opposite occurs case majority works do real overall kinetics, namely, or

Language: Английский

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Hydrothermal treatment of lignocellulosic biomass towards low-carbon development: Production of high-value-added bioproducts

EnergyChem, Journal Year: 2024, Volume and Issue: 6(6), P. 100133 - 100133

Published: Sept. 12, 2024

Language: Английский

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Graphene oxide impregnated activated carbon derived from coconut shell through hydrothermal carbonization for cationic dye removal: Adsorptive performance, kinetics, and chemistry of interaction

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 437, P. 140655 - 140655

Published: Jan. 1, 2024

Language: Английский

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Study of methylene blue dye removal using biochar derived from leaf and stem of Lantana camara L.

Carbon Research, Journal Year: 2024, Volume and Issue: 3(1)

Published: March 7, 2024

Abstract The discharge of dye containing effluents into the water bodies has raised concern due to potential hazards related their toxicity in environment. removal from aqueous solution can be efficiently performed using different kinds adsorbents. main objective current study is determine biochar (BC) prepared Lantana camara L. at 600 ℃ for methylene blue (MB) as a function contact time, pH (3–12), adsorbent dose (100–400 mg L −1 ), and initial concentration (5–20 ). BC leaf ( $${\text{BC}}_{\text{L}}600$$ BC L 600 ) stem $${\text{BC}}_{\text{S}}{60}0$$ S was characterized elemental analysis, infrared spectroscopy, X-ray diffraction, scanning electron microscopy, zeta analysis. results indicated that had highly influenced absorption over surfaces. pseudo-second-order kinetics able explain interaction MB with both $${\text{BC}}_{\text{S}}600$$ , implying multi-step characteristics adsorption process. It also postulated through thermodynamic analysis process spontaneous exothermic nature. implies mechanism electrostatic, hydrogen bond, n-π, π-π interactions, i.e., may an effective bio-sorbent treatment contaminated wastewater industries. Graphical

Language: Английский

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Novel insights into liquid digestate-derived hydrochar enhances volatile fatty acids production from anaerobic co-digestion of sludge and food waste

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160635 - 160635

Published: Feb. 1, 2025

Language: Английский

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