Innovative Adsorbents for Pollutant Removal: Exploring the Latest Research and Applications

Molecules, Год журнала: 2024, Номер 29(18), С. 4317 - 4317

Опубликована: Сен. 11, 2024

The growing presence of diverse pollutants, including heavy metals, organic compounds, pharmaceuticals, and emerging contaminants, poses significant environmental health risks. Traditional methods for pollutant removal often face limitations in efficiency, selectivity, sustainability. This review provides a comprehensive analysis recent advancements innovative adsorbents designed to address these challenges. It explores wide array non-conventional adsorbent materials, such as nanocellulose, metal–organic frameworks (MOFs), graphene-based composites, biochar, emphasizing their sources, structural characteristics, unique adsorption mechanisms. discusses processes, the basic principles, kinetics, isotherms, factors influencing efficiency. highlights superior performance materials removing specific pollutants across various settings. practical applications are further explored through case studies industrial settings, pilot studies, field trials, showcasing real-world effectiveness. Additionally, critically examines economic considerations, technical challenges, impacts associated with adsorbents, offering balanced perspective on viability conclusion emphasizes future research directions, focusing development scalable production methods, enhanced material stability, sustainable regeneration techniques. assessment underscores transformative potential remediation critical role advancing protection.

Язык: Английский

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Synthesis of multifunctional mesoporous geopolymer under hydrothermal curing: High mechanical resistance and efficient removal of methylene blue from aqueous medium

Developments in the Built Environment, Год журнала: 2024, Номер 18, С. 100460 - 100460

Опубликована: Апрель 1, 2024

This study created green multifunctional geopolymeric sorbent material with strong cationic dye adsorption capacity and superior mechanical strength to broaden lead sludge (LS)-based geopolymer applications. In this study, two sorbents (Go G) were fabricated using slag blended 0 50 wt.% LS, respectively activated 6 NaOH. The Go G specimens normally cured for up 28 days, while hydrothermally at different steam-pressures modify/improve histological characteristics as well resistance. selected characterized via XRD, FTIR, TGA/DTG, XPS, N2-adsorption/desorption SEM/EDX techniques. G/5bar's high may be due the production of CSH, CAH, CASH, NASH, which formed a fine mesoporous zeolitic structure highest BET-surface area (64.55m2/g) lowest BJH-maximum pore diameter (9.68nm). maximum MB synthesized adsorbent was 230.4 mg/g.

Язык: Английский

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Insights into activators on biomass-derived carbon-based composites for electrochemical energy storage

Materials Today Chemistry, Год журнала: 2024, Номер 37, С. 101988 - 101988

Опубликована: Март 5, 2024

Язык: Английский

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Zeolite supported zinc oxide nanoparticles composite: Synthesis, characterization, and photocatalytic activity for methylene blue dye degradation

Desalination and Water Treatment, Год журнала: 2024, Номер 319, С. 100433 - 100433

Опубликована: Май 31, 2024

In the first stage of this study, zinc oxide nanoparticles (ZnO-NPs) were synthesized. The synthesized characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission (TEM), selected area diffraction (SAED), and analyses (XRD). Subsequently, a composite material was obtained coating ZnO-NPs with zeolite from Rátka, Hungary. photocatalytic degradation using Hungarian in ZnO-Zeolite investigated. objective to evaluate efficacy degrading methylene blue (MB) under ultraviolet-visible (UV). It observed that materials influenced light source. rates showed 100 mg L-1 MB achieved highest photodegradation rate 96.70% when exposed sunlight for 210 min. These findings indicate 1:5 ratio has potential significantly increase activity, achieving high yield compared raw zeolite. last equilibrium, kinetic, thermodynamic studies carried out. maximum adsorption capacity calculated as qm=41.32 g-1. kinetic composite, best results Langmuir isotherm pseudo-second-order kinetics. A desorption study been conducted, it determined can be reused up 7 cycles.

Язык: Английский

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Efficient Adsorption of Methylene Blue Dye Using Ni/Al Layered Double Hydroxide-Graphene Oxide Composite

BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS, Год журнала: 2024, Номер 19(2), С. 181 - 189

Опубликована: Фев. 21, 2024

To address environmental pollution, we developed Ni/Al layered double hydroxide-graphene oxide (Ni/Al-GO) adsorbent materials for the purpose of eliminating methylene blue (MB) dye pollutants. The adsorption process was explored by examining many experimental factors, including temperature, regeneration/reuse procedure, pH, and time, their effects on material. appropriate model isotherm is Langmuir isotherm. Ni/Al-GO material achieved a maximum capacity 61.35 mg/g MB at temperature 60 °C. thermodynamic characteristics indicate that both endothermic spontaneous as increases. regeneration method demonstrated has highly stable structure, enabling it to be utilized five cycles with remarkable rate 93.49% in fifth cycle. pH yielded best results all 10, kinetic pseudo second-order behavior. Copyright © 2024 Authors, Published MKICS BCREC Publishing Group. This an open access article under CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Язык: Английский

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Optimizing Mg-Fe layered double hydroxides and efficient removal of methyl orange: Screening, performance and mechanism

Environmental Technology & Innovation, Год журнала: 2024, Номер 34, С. 103629 - 103629

Опубликована: Апрель 4, 2024

This study investigates the influence of key factors on structure prepared MgFe-LDH and their application for removal methyl orange (MO). The optimal synthesis were determined through Scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), partition coefficient (PC) analysis to morphology, crystallinity, physicochemical properties resulting materials. Under conditions Mg2+/Fe3+=4, pH=11, aging temperature 80℃, well-structured Mg4Fe-LDH-11-80℃ was successfully synthesized with a theoretical maximum adsorption capacity 1688.22 mg/g MO. process follows Redlich-Peterson Avrami models, displaying exothermic characteristic. outstanding capability is likely attributed synergistic effects electrostatic attraction, hydrogen bonding, complexation reactions, ion exchange mechanisms. Furthermore, cost recycling experiments indicate that LDH material cost-effective suitable multiple reuse cycles, making it promising candidate treating wastewater containing MO dyes.

Язык: Английский

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Economical magnetic activated carbon for methylene blue removal from water

Next Sustainability, Год журнала: 2024, Номер 4, С. 100057 - 100057

Опубликована: Янв. 1, 2024

This study investigates an easy synthesis method of magnetic activated carbon (Fe3O4/AC) composites by ultrasonic mechanical blending Fe3O4 particles and (AC) powder at different mass ratios. The materials with the best performance were characterized scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), specific surface porosity analyzer (BET), hysteresis loop meter (VSM), thermogravimetric analysis (TGA), photoelectron (XPS). as-prepared Fe3O4/AC was used to remove contaminant methylene blue (MB) from solution. effects initial solution pH, material dosage, temperature on MB removal studied. A series batch experiments demonstrated that a ratio AC = 1:5 showed higher adsorption capacity 251.3 ± 2.0 mg/g 20 °C pH 6.5. Isotherm kinetic studies indicated onto exothermic in chemical monolayer process. purification mechanism investigated, FT-IR results molecules adhered after purification. From XPS full spectrum high resolution spectrum, possible is inferred as follows: electronic transfer between =N+ CO/C─O Fe3O4/AC, well π-π interaction skeleton sheet aromatic ring MB. provides theoretical reference experimental basis for recovery utilization easily-obtained wastewater.

Язык: Английский

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Preparatiοn οf pοrοus hydrοxyapatite–metakaοlin geοpοlymer granules fοr adsοrptiοn applicatiοns using pοlyethylene glycοl as pοrοgen agent and sοdium dοdecyl sulfate as aniοnic surfactant

Environmental Science and Pollution Research, Год журнала: 2024, Номер 31(30), С. 43262 - 43280

Опубликована: Июнь 20, 2024

Язык: Английский

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Hydrothermal synthesis of environmentally-friendly hydroxyapatite using recycled waste for efficient Cd2+ removal from aqueous solutions

Materials Chemistry and Physics, Год журнала: 2025, Номер 334, С. 130407 - 130407

Опубликована: Янв. 24, 2025

Язык: Английский

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Synthesis and the impact of hydroxyapatite nanoparticles on the viability and activity of rhizobacteria

Beilstein Journal of Nanotechnology, Год журнала: 2025, Номер 16, С. 216 - 228

Опубликована: Фев. 18, 2025

Preserving the viability of rhizobacteria during plant application poses a significant challenge when utilizing as biofertilizers, especially under adverse environmental conditions. Therefore, selection suitable carrier material for plays crucial role in ensuring sustained these microorganisms. Nanomaterials, particularly nanohydroxyapatite (nHA), have garnered attention sustaining rhizobacterial viability, high loading capacity, biodegradability, and biocompatibility, which facilitate microbial interactions. In this study, nHA was synthesized using hydrothermal method used two strains (Pd Tb). The structural morphological properties were examined through XRD scanning electron microscopy analyses. Rhizobacteria encapsulated within material, their evaluated total plate count method. Following immobilization on nHA, phosphate-solubilizing capacity Pikovskaya's medium. A nitrogen-free bromothymol medium utilized to qualitatively assess nitrogen-fixing ability rhizobacteria. Furthermore, identified 16S rRNA gene sequencing, followed by analysis construct phylogenetic tree. found meet required quality criteria, exhibiting spherical morphology with an average particle size 68 nm porosity 54.78%. demonstrated favorable physical attributes pH 8.95 electrical conductivity 55.4 μS/cm. loaded onto maintained comparable those without carriers. highest Pd Tb observed seventh day after inoculation, measuring at 2.480 × 107 1.040 CFU/mL, respectively. qualitative tests that retained solubilize phosphate fix nitrogen. both been identified. rhizobacterium complete match Brevundimonas olei strain Prd2. Similarly, showed 100% similarity Bacillus altitudinis NPB34b. Based reseach, could be potential protect from external stressors maintain over long term. These findings indicate nanohydroxyapatite-rhizobacteria system promising environmentally friendly fertilizer.

Язык: Английский

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