Highly Efficient Cationic Surfactant Functionalized Alginate Hydrogel for Perfluorooctanoic Acid Adsorption: Optimization through Response Surface Methodology and Performance Evaluation for Aqueous Media

ACS ES&T Water, Год журнала: 2024, Номер 4(7), С. 3078 - 3088

Опубликована: Июнь 29, 2024

This study presents a sustainable treatment of perfluoroalkyl or polyfluoroalkyl substances in aquatic environments, focusing on perfluorooctanoic acid (PFOA), through adsorption. The employs response surface methodology to assess the influence adsorbent's synthesis parameters─specifically, quantities calcium, sodium alginate, and cetyltrimethylammonium bromide (CTAB)─on adsorption efficiency alginate hydrogel. optimally synthesized hydrogel exhibits an average PFOA removal 94.8 ± 2.1% at 50 mg/L concentration. experimental data for closely align with pseudo-second-order rate kinetic model (R2 = 0.97) Sips isotherm 0.99), maximum possible capacity 382.1 mg/g. Hydrogen bonding electrostatic hydrophobic interactions are identified as primary mechanisms driving by high values selectivity parameters, indicative its preference even presence background river water matrix. A regenerant solution 50% ethanol 0.25% ammonium hydroxide demonstrates ∼80% regeneration capability, although it falls ∼70% after three adsorption–desorption cycles. provides insights into performance CTAB-functionalized hydrogel, showcasing uptake PFOA.

Язык: Английский

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Fate, distribution, and transport dynamics of Per- and Polyfluoroalkyl Substances (PFASs) in the environment

Journal of Environmental Management, Год журнала: 2024, Номер 371, С. 123163 - 123163

Опубликована: Ноя. 7, 2024

Язык: Английский

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Mechanistic insights into adsorption-desorption of PFOA on biochars: Effects of biomass feedstock and pyrolysis temperature, and implication of desorption hysteresis

The Science of The Total Environment, Год журнала: 2024, Номер 957, С. 177668 - 177668

Опубликована: Ноя. 23, 2024

Язык: Английский

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Regeneration of biochars (pristine and modified/engineered) and economic analysis of their use in the removal of per- and polyfluoroalkyl substances (PFAS) from water/wastewater

Frontiers of Environmental Science & Engineering, Год журнала: 2024, Номер 19(2)

Опубликована: Ноя. 23, 2024

Язык: Английский

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Removal of per- and polyfluoroalkyl substances in environmental matrices by biochars: mechanisms, fate, and research needs

Elsevier eBooks, Год журнала: 2025, Номер unknown, С. 215 - 240

Опубликована: Янв. 1, 2025

Язык: Английский

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