Interaction of λ-cyhalothrin with chitosan and quartz sand: Attachment, transport, and cotransport in porous media

IF 4 2区环境科学与生态学 Q1 WATER RESOURCES

Advances in Water Resources Pub Date : 2025-03-29 DOI:10.1016/j.advwatres.2025.104965

Evangelia A. Xenou , Anastasios A. Malandrakis , Vasileios E. Katzourakis , Constantinos V. Chrysikopoulos

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Abstract

The insecticide λ-cyhalothrin a type II synthetic parathyroid. It is a hydrophobic and highly effective broad-spectrum insecticide commonly used in pest management. However, its presence in subsurface formations poses environmental toxicity risks and potentially may have adverse effects on humans. Chitosan, a polymer with unique physicochemical and absorption properties, is utilized in numerous various industrial applications. In this study, the interactions of λ-cyhalothrin with chitosan in the presence and absence of quartz sand were investigated under static, dynamic (batch), and column transport conditions at 25 °C. The experimental adsorption data were effectively modeled using a pseudo-second-order adsorption kinetic model, while the transport experiments were simulated with an advection dispersion model incorporating two-site linear or nonlinear particle attachment. The results indicate that the observed λ-cyhalothrin adsorption onto either Chitosan or quartz sand is governed by chemisorption. Cotransport experiments revealed bidirectional interactions, where chitosan forms aggregates with λ-cyhalothrin, enhancing chitosan attachment and significantly reducing λ-cyhalothrin retention. This, highlights chitosan's potential as a remediation agent for mitigating pesticide contamination in porous media.

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来源期刊

Advances in Water Resources 环境科学-水资源

CiteScore

9.40

自引率

6.40%

发文量

171

审稿时长

36 days

期刊介绍： Advances in Water Resources provides a forum for the presentation of fundamental scientific advances in the understanding of water resources systems. The scope of Advances in Water Resources includes any combination of theoretical, computational, and experimental approaches used to advance fundamental understanding of surface or subsurface water resources systems or the interaction of these systems with the atmosphere, geosphere, biosphere, and human societies. Manuscripts involving case studies that do not attempt to reach broader conclusions, research on engineering design, applied hydraulics, or water quality and treatment, as well as applications of existing knowledge that do not advance fundamental understanding of hydrological processes, are not appropriate for Advances in Water Resources. Examples of appropriate topical areas that will be considered include the following: • Surface and subsurface hydrology • Hydrometeorology • Environmental fluid dynamics • Ecohydrology and ecohydrodynamics • Multiphase transport phenomena in porous media • Fluid flow and species transport and reaction processes