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<h3>[[In Situ Chemical Oxidation - ISCO]]</h3>
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<h3>[[In Situ Chemical Reduction - ISCR]]</h3>
 
   
 
   
CONTRIBUTORS: [[Dr. Michelle Crimi]]
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CONTRIBUTORS: [[Dr. Paul Tratnyek]]
 
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ARTICLE SUMMARY  
 
ARTICLE SUMMARY  
Chemical Oxidation is an in situ remediation technology that can be applied to groundwater or soils through the injection or mechanical mixing of strong oxidants into the treatment zone, promoting destructive abiotic degradation reactions. It is commonly used, applicable to many hydrogeologic settings, and relies on well-known technologies for injection and mixing.
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In situ chemical reduction (ISCR) refers to the in situ groundwater remediation approaches that principally involve contaminant treatment by chemical reduction. ISCR can occur via natural bigeochemical processes, catalyzed by in situ microbial activity, or by adding chemical reductants. In this article, we introduce the basic principals and comment on the use of ISCR in remediation activities including outlining the common ISCR technologies available with links to more information.
 
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<h3>[[Molecular Biological Tools - MBTs]]</h3>
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<h3>[[pH Buffering in Aquifers]]</h3>
 
   
 
   
CONTRIBUTORS: [[Dora Ogles-Taggart]]
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CONTRIBUTORS: [[Dr. Miles Denham]]
 
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ARTICLE SUMMARY  
 
ARTICLE SUMMARY  
Molecular Biological Tools (MBTs) are analyses used to estimate biodegradation at contaminated sites. They can provide key evidence about contaminant-degrading microorganisms and biodegradation processes during many phases of remediation projects. Although numerous MBTs exist, being informed about a large swath of the approaches available is critical to choosing the MBT that best aligns with site-specific project objectives and concerns.
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Buffering of pH – the resistance to pH change – in groundwater systems can be an important control on contaminant attenuation or degradation processes. All aquifers have some natural buffering capacity, but in many cases the pH buffering capacity must be augmented to achieve optimum remediation performance. This is particularly true for remedial processes that generate acid such as microbial degradation of chlorinated solvents. Considerations in choosing amendments for enhancing aquifer-buffering capacity are achieving the correct dose, the longevity of it in the aquifer, and any collateral effects.
 
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Revision as of 16:15, 28 June 2016

Welcome to Remediapedia! Your environmental restoration information gateway [ 250 pages in English ]

Health & Environmental Impacts || In Situ Remediation Technologies || Monitoring Technologies || Monitored Natural Attenuation || Munitions Constituents || Regulatory Issues and Site Management || Site Characterization & Assessment Technologies || Soil & Groundwater Contaminants || Transport & Attenuation Processes

ABOUT REMEDIAPEDIA

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Remediapedia aims to be the go-to website for environmental restoration information. US environmental programs (e.g. the Strategic Environmental Research and Development Program (SERDP) and Environmental Security Technology Certification Program (ESTCP) fund cutting-edge environmental projects. Here, articles are written by invited experts (see Contributors), edited by leaders in this field (see Editors), and aim to introduce and summarize current knowledge to environmental project professionals on topics using cross-linked references to reports and technical literature. The library archives summarize and make accessible additional resources relevant to all environmental professionals.

FEATURED ARTICLES (Updated Regularly)

In Situ Chemical Reduction - ISCR

CONTRIBUTORS: Dr. Paul Tratnyek


ARTICLE SUMMARY In situ chemical reduction (ISCR) refers to the in situ groundwater remediation approaches that principally involve contaminant treatment by chemical reduction. ISCR can occur via natural bigeochemical processes, catalyzed by in situ microbial activity, or by adding chemical reductants. In this article, we introduce the basic principals and comment on the use of ISCR in remediation activities including outlining the common ISCR technologies available with links to more information.

pH Buffering in Aquifers

CONTRIBUTORS: Dr. Miles Denham


ARTICLE SUMMARY Buffering of pH – the resistance to pH change – in groundwater systems can be an important control on contaminant attenuation or degradation processes. All aquifers have some natural buffering capacity, but in many cases the pH buffering capacity must be augmented to achieve optimum remediation performance. This is particularly true for remedial processes that generate acid such as microbial degradation of chlorinated solvents. Considerations in choosing amendments for enhancing aquifer-buffering capacity are achieving the correct dose, the longevity of it in the aquifer, and any collateral effects.

LIBRARY (Documents/Reports/References)