Groundwater Remediation
Groundwater Remediation - Related Videos
08:27
Sampling and Identification of Microplastics in Groundwater
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2025
Here, we provide a detailed description of sampling groundwater from a borehole for microplastics analysis using a patented sampling system developed for this purpose. The protocol details the methods for sampling microplastics from boreholes, as well as the separation and chemical identification of microplastics.
05:40
Comparison of Scale in a Photosynthetic Reactor System for Algal Remediation of Wastewater
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Cited by 3 •
2017
An experimental methodology is presented to compare the performance of small (100 L) and large (1,000 L) scale reactors designed for algae remediation of landfill wastewater. System characteristics, including surface area to volume ratio, retention time, biomass density, and wastewater feed concentrations, can be adjusted based on application.
09:39
Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites
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Cited by 26 •
2014
Biochar is a carbon-rich material used as a soil amendment with the ability to sustainably sequester carbon, improve substrate quality and sorb contaminants. This protocol describes the 17 analytical methods used for the characterization of biochar, which is required prior to large scale implementation of these amendments in the environment.
08:32
Ultrasound Images of the Tongue: A Tutorial for Assessment and Remediation of Speech Sound Errors
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Cited by 41 •
2017
Ultrasound imaging can be used to display the shape and movements of the tongue in real time during speech. The images can be used to determine the nature of speech sound errors. Visual feedback of the tongue can be used to facilitate improvements in speech sound production in clinical populations.
08:30
A Complete Method for Evaluating the Performance of Photocatalysts for the Degradation of Antibiotics in Environmental Remediation
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Cited by 5 •
2022
Presented here is a protocol to explore a universal set of experimental procedures for comprehensive laboratory evaluation of photocatalysts in the field of environmental purification, using the example of photocatalytic removal of antibiotic organic pollutant molecules from water by phthalocyanine sensitized silver phosphate composites.
FAQs
Microorganisms transform contaminants through metabolic processes, using them in reactions that alter or break down pollutants. In groundwater remediation, practitioners may stimulate native microbial communities or support their activity by changing oxygen availability, supplying nutrients, or adding electron donors. The resulting biological activity can reduce contaminant concentrations and help limit movement through the subsurface, depending on site conditions.
Oxygen availability shapes which microbial processes can occur in contaminated groundwater. Adjusting it can stimulate or support microorganisms whose metabolic activity contributes to contaminant transformation. Because the suitable condition depends on the contaminant and site, oxygen management is not a universal recipe. It is one controllable variable used to guide bioremediation and assess whether conditions favor pollutant reduction.
Nutrients and electron donors can support microbial activity in the subsurface. Adding them is intended to create conditions that promote biological transformation rather than simply moving contaminated water. Their use connects site management with microbial ecology: practitioners modify the environment, then evaluate whether degradation is occurring and whether contaminant movement is being reduced. Results remain dependent on contaminant and site conditions.
Monitored natural attenuation relies on observing microbial degradation and related contaminant changes over time rather than emphasizing active additions or engineered treatment. It therefore requires long-term environmental monitoring to determine whether natural processes are reducing pollution and limiting movement. This approach is relevant when the site's biological activity and conditions support continued transformation, but the overview does not specify universal thresholds or timelines.
A biological groundwater remediation plan begins with understanding the contaminant and site conditions, then selecting a supported biological strategy. Depending on the situation, practitioners may adjust oxygen availability, add nutrients or electron donors, use plants, or establish an engineered treatment zone. They subsequently monitor microbial degradation, contaminant movement, and aquifer conditions to judge whether restoration goals are being approached.
Plants or engineered treatment zones can complement microbial approaches when site conditions call for a structured way to support treatment in the subsurface. Plants represent a biological intervention, while engineered zones provide a designed setting for pollutant reduction. Their relevance extends beyond contaminant transformation: these approaches can help protect ecosystems and drinking-water supplies while controlling contaminant movement.
Long-term monitoring can show whether microbial degradation continues, whether pollutant levels are being reduced, and whether contaminants remain controlled within the subsurface. It also links biological activity to practical protection goals, including limiting contaminant movement and safeguarding aquifers, ecosystems, drinking-water supplies, and public health. Monitoring is therefore part of evaluating outcomes, not merely a final check.