Silica aerogels modified with vinyl, epoxide, methacrylate moieties for the removal of ciprofloxacin by adsorption from water

Separation and Purification Technology, Год журнала: 2024, Номер 354, С. 129112 - 129112

Опубликована: Авг. 6, 2024

Water pollution caused by antibiotic effluents, particularly ciprofloxacin is a growing environmental concern. To address this problem, silica aerogels containing vinyl, epoxide, or methacrylate organic functionalities were synthesized through facile sol–gel synthesis under ambient conditions and employed as adsorbents in study. The physicochemical structural features of the materials characterized using conventional complementary techniques. Structural characterization confirmed successful chemical functionalization surface for all samples. Similar to pristine aerogel, vinyl-functionalized aerogel displayed typical mesoporous network, whereas epoxide dominantly macroporous structures. Batchwise sorption experiments performed different operating conditions. results equilibrium kinetic adsorption studies showed excellent alignment with Langmuir isotherm pseudo-second-order models, respectively. Under optimum (C0 = 100 mg/L, mads/Vsoln 0.5, pH=6, t 90 min), capacities onto methacrylate-modified 62.7, 45.8 47.8 mg/g, Despite differences at micro- meso- macrostructure level, obtaining similar adsorptive performances confirms that mechanism not only relied on pore filling but also controlled molecular interactions. exhibited repetable performance least six cycles.

Язык: Английский

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Bifunctional adsorbents based on hyper-cross-linked polymers containing carbonyl and amine species for the efficient removal of diclofenac from water in a broad pH range

Environmental Research, Год журнала: 2025, Номер unknown, С. 120791 - 120791

Опубликована: Янв. 1, 2025

Язык: Английский

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Additive Manufacturing and Functionalization of Hollow Polypropylene Sorbents for Water Remediation

Macromolecular Rapid Communications, Год журнала: 2025, Номер unknown

Опубликована: Янв. 13, 2025

Abstract As the demand for clean water intensifies, developing effective methods removing pollutants from contaminated sources becomes increasingly crucial. This work establishes a method additive manufacturing of functional polymer sorbents with hollow porous features, designed to enhance interactions organic micropollutants. Specifically, core–shell filaments are used as starting materials, which contain polypropylene (PP) shell and poly(acrylonitrile‐co‐butadiene‐co‐styrene) core, fabricate 3‐dimensional (3D) structures on‐demand via material extrusion. After 3D printing, cores printed roads removed through solvent extraction, creating that increase accessible surface area adsorption. Subsequently, sulfonation‐induced crosslinking reaction installs sulfonic acid functionalities into PP backbones, while enhancing their chemical stability. It is found larger voids, thinner shells, enable improved structural retention during sulfonation limiting reaction‐induced stresses. The sulfonated exhibit strong affinity against cationic pollutants. voids within these not only improve integrity but also result in accelerated adsorption kinetics by maximizing area, thereby pollutant removal efficiency. provides promising solution advanced structured sorbent fabrication architectures, leading more solutions contaminant future.

Язык: Английский

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Preparation of hyper-crosslinked polymers containing pyrene for adsorption of 1-naphthylamine and 1-naphthol

Journal of Polymer Research, Год журнала: 2025, Номер 32(2)

Опубликована: Фев. 1, 2025

Язык: Английский

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Preparation of highly sulfonated hyper-crosslinked polymers as promising ammonia adsorbents with excellent performance

Journal of environmental chemical engineering, Год журнала: 2025, Номер 13(2), С. 116082 - 116082

Опубликована: Март 5, 2025

Язык: Английский

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Development of adsorbents based on phosphate-containing hyper-cross-linked polymers for selective removal of tetracycline from water: Unveiling the role of phosphate groups in adsorption

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 132846 - 132846

Опубликована: Апрель 1, 2025

Язык: Английский

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Scalable and facile fabrication of sulfonic-acid-functionalized porous hypercrosslinked polymers for efficient recovery of rare earth elements from tailing wastewater

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 155850 - 155850

Опубликована: Сен. 1, 2024

Язык: Английский

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Hyper-Cross-Linked Polyindole for Selective Adsorption and Resource Utilization of Organic Pollutants in Water

Langmuir, Год журнала: 2024, Номер 40(37), С. 19493 - 19505

Опубликована: Сен. 3, 2024

Efficient treatment and utilization of organic pollutants in water are difficult for environmental remediation. A new hyper-cross-linked polymer (PIn-HCP) with high specific surface area was constructed via polyindole (PIn) as building blocks. Rich pore structures abundant adsorption sites PIn-HCP were obtained by hyper-cross-linking. The enhanced from 14.85 to 431.89 m

Язык: Английский

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New Wine in Old Bottles: The Sustainable Application of Slow Sand Filters for the Removal of Emerging Contaminants, a Critical Literature Review

Sustainability, Год журнала: 2024, Номер 16(23), С. 10595 - 10595

Опубликована: Дек. 3, 2024

The current treatment of wastewater has unintended negative environmental impacts. Conventional methods frequently involve the use harmful chemicals, generate disinfectant by-products, consume significant amounts energy, and produce wastes requiring additional efforts for safe disposal. Water stress exacerbated by contaminants emerging concern (CECs) climate change, is further straining aging systems. A slow sand filter (SSF), with ligno-cellulosic layers, offers a novel, promising, economic alternative reclamation. This review examines key SSF characteristics, obtained from recent studies, explores sustainable materials such as ligno-cellulose, companion. optimal design includes bed depth >0.6 m, particle effective size (D10) between 0.15 mm 0.40 mm, uniformity coefficient (CU grain ratio) ≤2.0. It established that SSF’s characteristic biolayer microorganisms enhances contaminant removal via biodegradation. While biofilm-based micropollutants proven mechanism, research needed to address CEC challenges. For example, inclusion sawdust in layers can reduce energy consumption compared conventional be recycled through thermal conversion, aligning circular economy principles. approach potential improve economies, contributing achievement UN Sustainability Goals.

Язык: Английский

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Construction of a platform to develop 3D ionic porous organic polymers via a post-modification strategy for efficient adsorption of charged organic pollutants

Separation and Purification Technology, Год журнала: 2024, Номер unknown, С. 131124 - 131124

Опубликована: Дек. 1, 2024

Язык: Английский

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