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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Recent insights into mechanism of modified bio-adsorbents for the remediation of environmental pollutants

Environmental Pollution, Journal Year: 2023, Volume and Issue: 339, P. 122720 - 122720

Published: Oct. 13, 2023

Language: Английский

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A review on the valorization of coconut shell waste

Biomass Conversion and Biorefinery, Journal Year: 2022, Volume and Issue: 14(7), P. 8115 - 8125

Published: July 7, 2022

Language: Английский

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Study on the Application of Shell-Activated Carbon for the Adsorption of Dyes and Antibiotics

Water, Journal Year: 2022, Volume and Issue: 14(22), P. 3752 - 3752

Published: Nov. 18, 2022

In this study, we prepared homemade fruit shell-activated carbon (SAC) with efficient adsorption of new pollutants and used it in the removal methylene blue dye (MB) ofloxacin antibiotic (OFL) water. We fitted experimental data for MB OFL isothermal kinetic models performed extensive characterization to study properties SAC. also studied effects solution pH, dosage amount, initial concentration, coexisting ions on capacity. The results show that SAC has a rich pore structure, electrostatic interactions are its main mechanism. Adjusting pH by changing removing K+, SO42−, Cu2+ could increase 99.9% 97.6%, respectively. addition, capacity remained at more than 50% state after three iterations regeneration, showing good regeneration ability. These potential replacing conventional activated remove pollutants.

Language: Английский

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Elimination of crystal violet from aqueous solution by adsorption on naturel polysaccharide: Kinetic, isotherm, thermodynamic studies and mechanism analysis

Arabian Journal of Chemistry, Journal Year: 2023, Volume and Issue: 17(1), P. 105453 - 105453

Published: Nov. 11, 2023

The colored discharges from certain tanning industries into aquatic environments are too heavy with violet crystal; these have recently become a significant environmental problem. objective of this work is to find an effective method stop the propagation micropollutants in water. Although various treatment techniques been tested, they often ineffective treating micropollutants. This study focuses on optimizing parameters involved adsorption process crystal (CV) using crude chitin (RC). It was found that mass 0.08 g RC can effectively retain CV. Modeling experimental results indicated kinetics CV onto raw follows pseudo-second-order at temperatures studied, and intra-particle diffusion not only rate controlling step. After 80 minutes contact, saturation surface obtained. Freundlich model describes isotherms. adsorbed quantities increase when pH goes 4 12. thermodynamic showed spontaneous (ΔG° < 0) endothermic (ΔH° > 0). value pHpzc located = 8.4. Characterization by FTIR, XRD, DTA/TGA SEM/EDS before after contact shed light nature interactions between RC.

Language: Английский

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NiCo bimetallic and the corresponding monometallic organic frameworks loaded CMC aerogels for adsorbing Cu2+: Adsorption behavior and mechanism

International Journal of Biological Macromolecules, Journal Year: 2023, Volume and Issue: 244, P. 125169 - 125169

Published: June 2, 2023

Language: Английский

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Insight into the Speciation of Heavy Metals in the Contaminated Soil Incubated with Corn Cob-Derived Biochar and Apatite

Molecules, Journal Year: 2023, Volume and Issue: 28(5), P. 2225 - 2225

Published: Feb. 27, 2023

Soil heavy metal contamination is a severe issue. The detrimental impact of contaminated metals on the ecosystem depends chemical form metals. Biochar produced at 400 °C (CB400) and 600 (CB600) from corn cob was applied to remediate Pb Zn in soil. After one month amendment with biochar (CB400 CB600) apatite (AP) ratio 3%, 5%, 10%, 3:3% 5:5% weight apatite, untreated treated soil were extracted using Tessier's sequence extraction procedure. five fractions Tessier procedure exchangeable fraction (F1), carbonate (F2), Fe/Mn oxide (F3), organic matter (F4), residual (F5). concentration analyzed inductively coupled plasma mass spectroscopy (ICP-MS). results showed that total 3023.70 ± 98.60 mg kg-1 2034.33 35.41 kg-1, respectively. These figures 15.12 6.78 times higher than limit standard set by United States Environmental Protection Agency (U.S. EPA 2010), indicating high level studied soil's pH, OC, EC increased significantly compared (p > 0.05). descending F2 (67%) F5 (13%) F1 (10%) F3 (9%) F4 (1%) F2~F3 (28%) (27%) (16%) (0.4%), BC400, BC600, reduced other stable including F3, F4, F5, especially rate 10% combination apatite. effects CB400 CB600 reduction almost same CB400, CB600, mixture these biochars 5% or (w/w) could immobilize lead zinc reduce threat surrounding environment. Therefore, derived be promising materials for immobilizing multiple-contaminated

Language: Английский

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Advancements in utilizing almond-shell-based materials for the adsorptive removal of hazardous pollutants from water: a 10-year review

Euro-Mediterranean Journal for Environmental Integration, Journal Year: 2024, Volume and Issue: 9(2), P. 545 - 568

Published: Feb. 10, 2024

Language: Английский

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Bionanocomposite MIL-100(Fe)/Cellulose as a high-performance adsorbent for the adsorption of methylene blue

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: June 24, 2024

Abstract World production of dyes is estimated at more than 800,000 t·yr −1 . The purpose this research falls within the scope choice an effective, local, and inexpensive adsorbent to remove from wastewater. Adsorptive elimination by commonly accessible adsorbents inefficient. metal–organic frameworks (MOFs) are important class porous materials offering exceptional properties as improving separation efficiency compared existing commercial adsorbents. However, its powder form limits applications. One way overcome problem trap them in a flexible matrix hierarchical composite. Therefore, work, we prepared MIL-100 (Fe) embedded cellulose named MIL-100(Fe)/Cell, used it methylene blue (MB) dye. According BET analysis, specific surface area synthesized MOF 294 m 2 /g which related presence efficient green support. structure composite approximately hexagonal. Adsorption was studied function contact time, mass pollutant load (concentration), pH, effect each on absorption optimized. MIL-100(Fe)/Cell capable removing 98.94% MB dye with initial concentration 150 mg/L 10 min pH = 6.5 room temperature. obtained maximum adsorption capacity 384.615 mg/g. isotherm consistent Langmuir models. mechanism proceeds through п-п electrostatic interactions.

Language: Английский

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Evaluation of physico-chemical characteristics of biochar produced from red bell pepper waste biomass

Clean Technologies and Environmental Policy, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 3, 2025

Language: Английский

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