腐植酸对氧化钒纳米颗粒在水饱和填料柱中迁移的影响

IF 11.3 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials Pub Date : 2025-07-19 DOI:10.1016/j.jhazmat.2025.139306

Cong Tan, Baogang Zhang, Wei Zhang, Yang Tang, Xinzhao Luo

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引用次数: 0

摘要

钒氧化物纳米颗粒在生产和应用过程中会释放到环境中。然而，人们对它们的环境行为知之甚少，特别是在无处不在的有机物（OM）的影响下。本文研究了在腐植酸（HA）存在的情况下，饱和含水层中V2O5、VO2和V2O3 NPs的运移。腐植酸是水环境中主要溶解有机质。低浓度的HA （0.1 mg C/L）可阻断VOx NPs的迁移，特别是对VO2 NPs的迁移。当HA浓度增加到0.5 mg C/L和1 mg C/L时，VOx NPs的迁移率增加。当添加0.5 mg C/L的HA时，VOx-NPs在实际含水层介质中的迁移也加快了。通过XDLVO计算粒子-粒子和粒子-介质的能垒变化，验证了实验结果。用MMS方程量化了平流、弥散、结合力、重力的相对贡献。利用HYDRUS-1D的两点动态附着模型确定了石英砂中VOx NPs输运速率系数。粒子轨迹模型揭示了VOx NPs的迁移路径。这些发现有助于全面了解VOx NPs在环境中的迁移，有助于制定其风险管理策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Effect of Humic Acid on the Transport of Vanadium Oxides Nanoparticles in Water Saturated Packed Columns

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Effect of Humic Acid on the Transport of Vanadium Oxides Nanoparticles in Water Saturated Packed Columns

Abundant vanadium oxides nanoparticles (VOx NPs) release to environment during their production and application. However, little is known on their environmental behaviors, especially under the influence of ubiquitous organic matter (OM). This study investigated the transport of V₂O₅, VO₂, and V₂O₃ NPs in saturated aquifer in the presence of humic acid (HA), the main dissolved OM in aqueous environment. HA at lower concentration (0.1 mg C/L) blocked the migration of VOx NPs, especially for VO₂ NPs. With the increase of HA concentration to 0.5 mg C/L and 1 mg C/L, the mobility of VOx NPs increased. VOx-NPs migration also accelerated in actual aquifer medium with the addition of HA at 0.5 mg C/L. The experimental results were verified by XDLVO calculation of particle-particle and particle-medium energy barrier changes. The relative contributions of advection, dispersion, binding force, gravity, were quantified by MMS equation. The rate coefficient of VOx NPs transport in quartz sand was determined by the two-point dynamic attachment model of HYDRUS-1D. The particle trajectory model revealed the migration path of VOx NPs. These findings contribute to a comprehensive understanding of the migration of VOx NPs in environment, which is helpful to develop strategies for their risks management.

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来源期刊

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.