Groundwater recirculation can increase the effectiveness and speed of in-situ remediation activities at contaminated sites! Many sites with groundwater contamination require an in-situ remedial approach that can treat difficult or hard to reach contaminants in the subsurface. Excavating these impacts
Activated Carbon: New to In-Situ Remediation
In the past couple of years in Canada, specially formulated activated carbon (AC) based remedial amendments have effectively contained and treated petroleum hydrocarbon and chlorinated solvent plumes. Three brief case studies are presented in this article showcasing the power of
Activated Carbon – What It Is and How It Works
Charcoal is produced by heating wood or other organic materials in the absence of oxygen at temperatures above 300⁰C. Early methods consisted of constructing earthen kilns over stacked wood. The wood is partially burned to generate heat. Heating continues
Treating a Plume with One Injection
A single injection has been used to effectively contain and treat petroleum hydrocarbon and chlorinated solvent plumes using a specially formulated activated carbon (AC) based technology. This result has been documented at hundreds of sites. It’s a welcome result over
How Do You Spell Remediation Success? C-O-M-B-I-N-E
Consider this brief, but typical summary of contaminated site remediation options: Approach Cost Result Dig & Disposal (D&D) Only $1M No site closure due to contaminant rebound in groundwater Pump & Treat (P&T) Only $100K No site closure due to
Wait, Don’t Throw That Out! The Beneficial Reuse of Soils Just May Be A Better Way To Go
When contaminated soils are an obstacle to a property transaction or redevelopment, the fastest approach is usually to dig out the soil and then haul it away. But that last step might be rash – and costly. And it unnecessarily
Finally, We Have Permeable Reactive Barriers for Petroleum Hydrocarbons!
When environmental practitioners hear the term Permeable Reactive Barrier (PRB), likely an “iron wall” most often comes to mind. This is not surprising since iron PRBs have a long history – they were installed as early as 1995 to treat
Canadian Know-How Helps Move Remediation Projects Ahead All Winter Long
As Canadians, we love to talk about the weather. It changes dramatically across the seasons and directly impacts our work and play time. Three feet of blowing snow may tend to force us indoors for Netflix marathons. But work still
The Dirt on Dry Cleaners
Or…Removing a Stain on the Environment For decades tetrachloroethylene (a.k.a. perchloroethylene, PCE or perc) was favoured as a dry cleaning fluid due to its strong degreasing power, relatively gentle action on fabrics, and non-flammable nature. In time, scientists came to
Why ISCO is More Useful in 2016 Than Ever
People have been aware of the process of oxidation for millennia: ever since we learned to fashion tools and weapons from copper, iron and other metals. Much later, once we started to understand the underlying chemistry, the word oxidation was used to
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