Controlling Factors Affecting NAPL Residuals in Aquifers Containing Low-Permeability Lens Bodies DOI Open Access
Weichao Sun, Shuaiwei Wang,

Lin Sun

и другие.

Sustainability, Год журнала: 2025, Номер 17(7), С. 3205 - 3205

Опубликована: Апрель 3, 2025

The presence of residual non-aqueous phase liquid (NAPL) in low-permeability lens aquifers ten results a “tailing” effect, ecological deterioration and poor sustainability, which is primary factor contributing to remediation failures at NAPL-contaminated sites. This issue largely due the poorly understood mechanisms by NAPL residuals interact with aquifers. To elucidate these mechanisms, this study conducted series column experiments, varying permeability contrast (Kmn), sizes (ϕ), hydraulic gradients (I). Complementary techniques such as mercury intrusion porosimetry particle size analysis were employed characterize aquifer materials. data obtained include saturation (Sr), groundwater flow velocity (V), pore distribution, size, gradation under different experimental conditions. Sensitivity analyses using range variance identified following order effect on aquifers: Kmn > ϕ I. Correlation further suggest that governing are predominantly mediated changes average macroporosity (pores 60 μm), mesoporosity = 30~60 microporosity 2~30 well abrupt interface between aquifer, addition V. can provide theoretical basis for green, low-carbon, sustainable development, pollution environment security.

Язык: Английский

Global Priority Antibiotics Integrated with Their Environmental Occurrence and the Health Risks of Antibiotic Resistance Genes DOI

Fuyang Huang,

Dinna Zhou, B.H. Yan

и другие.

Journal of Cleaner Production, Год журнала: 2025, Номер unknown, С. 144778 - 144778

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

1

Occurrence and distribution of atrazine in groundwater from agricultural areas in China DOI

Shengpin Li,

Fuyang Huang,

Hai-Tao Piao

и другие.

The Science of The Total Environment, Год журнала: 2024, Номер 955, С. 177161 - 177161

Опубликована: Окт. 30, 2024

Язык: Английский

Процитировано

5

Reshuffling the risk values of pesticides in surface-groundwater systems: Evidence from mining intensity and hydrogeological vulnerabilities DOI

Jinlong Hou,

Nan Wang, HU Chang-qin

и другие.

The Science of The Total Environment, Год журнала: 2025, Номер 967, С. 178755 - 178755

Опубликована: Фев. 12, 2025

Язык: Английский

Процитировано

0

Mechanisms of Non-Aqueous Phase Liquid Retention in Low-Permeability Aquifer Lenses: Effects on Contaminant Remediation DOI Open Access
Weichao Sun, Shuaiwei Wang, Jin Yu

и другие.

Water, Год журнала: 2025, Номер 17(4), С. 573 - 573

Опубликована: Фев. 17, 2025

The residual non-aqueous phase liquid (NAPL) within low-permeability lenses of aquifers is a major contributor to “tailing”, phenomenon that complicates the remediation NAPL-contaminated sites. A fundamental challenge in addressing this issue lack understanding primary controlling factors and underlying effects NAPL residuals these aquifer lenses. This study aims identify key mechanisms affecting through series experimental approaches. These include soil column simulation experiments on various lenses, adsorption lens particles, pore mercury intrusion testing, particle size distribution analysis. provided valuable data saturation SR, capacity, size, gradation, different Using mass conservation approach, contributed less than 0.5% total residuals, while retention accounted for more 99.5%, highlighting dominant mechanism governing persistence result was further clarified an analysis characteristics. Correlation conducted examine relationships between macropore porosity (nmax, diameter > 60 μm), mesopore (nmid, = 30~60 small (nmin, < 30 μm). results demonstrated mesopores exhibited strongest correlation with retention, due their pronounced capillary action sufficient storage capacity NAPL.

Язык: Английский

Процитировано

0

Which Pollutants Should Be Prioritized for Control in Multipollutant Complex Contaminated Groundwater of Chemical Industrial Parks? DOI
Futian Ren, Peng Wang, Danhua Mei

и другие.

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Март 17, 2025

Increasing chemical pollutants in groundwater within industrial parks pose a critical environmental challenge, necessitating innovative strategies to address contaminants with the highest risks health and ensure sustainable management. Herein, we investigated 277 from 367 sampling points across 10 rounds, totaling 1,016,590 measured data points. An prioritization index (EHPI) was proposed applied integrate multiple criteria: occurrence, migration, persistence, bioaccumulation, acute chronic toxicity, effects rank target for priority control. Thirty were classified as top-priority group 81 high-priority, metals, polycyclic aromatic hydrocarbons, haloalkanes ranking highest, while emerging of concern ranked lower. The top 6 beryllium, benzo(g,h,i)perylene, nickel, benzo(a)pyrene, chrysene, arsenic. EHPI method compared against five other weighting schemes, including AHP (analytic hierarchy process), entropy, AHP-entropy, AHP-TOPSIS (technique order preference by similarity ideal solution), entropy-TOPSIS. effectively captured integrated results more simplistic schemes. Overall, 38 are recommended inclusion control list, focusing on high detection exceedance categories. This framework provides guidance focused monitoring, assessment, highest-risk pollutants, supporting effective human protection.

Язык: Английский

Процитировано

0

Assessment of Physical Parameters and Potentially Toxic Elements in Municipal Water Distribution Systems DOI Creative Commons

Nida Gul,

Taufiq Nawaz, H. Ahmad

и другие.

Journal of Hazardous Materials Advances, Год журнала: 2025, Номер unknown, С. 100694 - 100694

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0

Controlling Factors Affecting NAPL Residuals in Aquifers Containing Low-Permeability Lens Bodies DOI Open Access
Weichao Sun, Shuaiwei Wang,

Lin Sun

и другие.

Sustainability, Год журнала: 2025, Номер 17(7), С. 3205 - 3205

Опубликована: Апрель 3, 2025

The presence of residual non-aqueous phase liquid (NAPL) in low-permeability lens aquifers ten results a “tailing” effect, ecological deterioration and poor sustainability, which is primary factor contributing to remediation failures at NAPL-contaminated sites. This issue largely due the poorly understood mechanisms by NAPL residuals interact with aquifers. To elucidate these mechanisms, this study conducted series column experiments, varying permeability contrast (Kmn), sizes (ϕ), hydraulic gradients (I). Complementary techniques such as mercury intrusion porosimetry particle size analysis were employed characterize aquifer materials. data obtained include saturation (Sr), groundwater flow velocity (V), pore distribution, size, gradation under different experimental conditions. Sensitivity analyses using range variance identified following order effect on aquifers: Kmn > ϕ I. Correlation further suggest that governing are predominantly mediated changes average macroporosity (pores 60 μm), mesoporosity = 30~60 microporosity 2~30 well abrupt interface between aquifer, addition V. can provide theoretical basis for green, low-carbon, sustainable development, pollution environment security.

Язык: Английский

Процитировано

0