Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Preferential flow path development and its influence on long-term PRB performance: column study.

W Kamolpornwijit1, L Liang, O R West

  • 1Environmental Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37830-6036, USA.

Journal of Contaminant Hydrology
|October 22, 2003
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

[Ethical challenges and prospective strategies in orthopedic robotic-assisted surgery].

Zhonghua wai ke za zhi [Chinese journal of surgery]·2026
Same author

Impact of a short-term stress management protocol on physiologic biofeedback measures of stress and mood in people with multiple sclerosis.

Multiple sclerosis and related disorders·2026
Same author

[Application and pregnancy outcomes analysis of hysteroscopy combined with hysterosalpingo-contrast sonography in intrauterine insemination].

Zhonghua fu chan ke za zhi·2025
Same author

Walking elicits muscle functional changes in the pectoral fin of Polypterus senegalus.

The Journal of experimental biology·2025
Same author

Experimental Observation of the Motion of Ions in a Resonantly Driven Plasma Wakefield Accelerator.

Physical review letters·2025
Same author

Gain-loss inhomogeneity sensing by dielectric metasurfaces operated on the trapped mode.

Optics letters·2025
Same journal

Multi-scale landscapes influence seasonal water quality variations in a semi-arid basin: Mechanistic insights and threshold-based management.

Journal of contaminant hydrology·2026
Same journal

Monsoon-driven spatio-temporal dynamics of microplastics in Brahmaputra riverbank sediments: Quantification using spectroscopic, pollution index and multivariate analysis.

Journal of contaminant hydrology·2026
Same journal

A robust Sentinel-2-based high-frequency optical sensing framework for understanding asymmetric turbidity responses to hydrological regulation in deep reservoirs.

Journal of contaminant hydrology·2026
Same journal

Microplastic transport in meandering open-channel flows: Coupled effects of sinuosity and particle density.

Journal of contaminant hydrology·2026
Same journal

Hydrochemical evolution rate response to pumping-induced hydrodynamic changes in an urban aquifer: A case study from Chifeng City, China.

Journal of contaminant hydrology·2026
Same journal

Visualization of the influence of sodium citrate on iron and uranium precipitation in a 2D laboratory scale tank.

Journal of contaminant hydrology·2026
See all related articles

Mineral precipitation, not gas production, primarily limits the lifespan of iron permeable reactive barriers (PRBs). Monitoring pH early on is crucial for predicting performance changes and preventing groundwater bypass.

Area of Science:

  • Environmental Engineering
  • Geochemistry
  • Hydrogeology

Background:

  • Permeable reactive barriers (PRBs) using iron (Fe(0)) are effective for groundwater remediation.
  • The operational lifespan of Fe(0) PRBs is constrained by various degradation pathways.
  • Uncertainty exists regarding the dominant mechanisms limiting PRB performance.

Purpose of the Study:

  • To investigate the primary mechanisms of performance degradation in Fe(0)-based PRBs.
  • To quantify the impact of mineral precipitation, gas production, and microbial activity on PRB function.
  • To establish early indicators for monitoring PRB hydraulic changes.

Main Methods:

  • Controlled field study using large-volume, flow-through columns.
  • Treatment of nitrate-rich groundwater with Fe(0) media.

Related Experiment Videos

  • Monitoring of chemical and hydraulic parameters, including tracer tests and ionic profiles.

    • Main Results:

    • Mineral precipitation and accumulation identified as the main cause of pore clogging at the column inlet.
    • Nitrogen gas (N(2)) production from biotic processes contributed secondarily to hydraulic effects.
    • Significant porosity reduction (up to 45.3%) observed near the inlet within 72 days under accelerated flow.
    • Preferential flow is predicted within approximately 1 year for similar site conditions.

    Conclusions:

    • Mineral precipitation is the dominant factor limiting Fe(0) PRB longevity.
    • pH serves as a critical early indicator of hydraulic residence time changes and heterogeneity development.
    • Groundwater bypass can occur if PRB media becomes clogged and less conductive than surrounding soil, compromising treatment efficacy.