Frequently Asked Questions

According to the EPA, bioremediation is a “treatment that uses naturally occurring organisms to break down hazardous substances into less toxic or non toxic substances”. Technologies can be generally classified as in situ or ex situ. In situ bioremediation involves treating the contaminated material at the site, while ex situ involves the removal of the contaminated material to be treated off-site.

 

There are many different methods used to remediate impacted soil or water, each methods has advantages and disadvantages. The effectiveness depends on the situation – the amount and type of oil, the urgency, where the spill is located, cost, meeting E.P.A. standards, and company responsibility.

Bioremediation 

Advantages

○ Bioremediation is a natural process.

○ It is cost effective.

○ Low capital expenditure.

○ Less manual supervision.

○ Less energy is required as compared to other technologies.

○ Chemicals are destroyed/removed from environment and not just merely separated.

 

Disadvantages

○ The process of bioremediation is very slow. (Time required is weeks to months).

○ Heavy metals are not removed.

○ For intuit bioremediation site must have soil with high permeability.

○ Does not remove all quantities of contaminants.

○ Substantial lack of understanding of microbial ecology, physiology of genetic and site expression.

○ Stronger scientific base is required for rational designing of process and success.

Evacuation and Proper Disposal

The quickest and possibly simplest method of reducing the amount of petroleum-contaminated soil is by excavating the contaminated soil and shipping it to an appropriate landfill for disposal or to a facility where the contaminated soil can be incorporated into paving material.

 

Advantages

○ Surest method of reducing human and ecological health risks at the location of the
    release.

○ No operation and maintenance costs.

 

Disadvantages

○ Cost.

○ Requirements for clean material to fill the excavation.

○ Long-term liability associated with disposal of the material.

Absorbents

Used to contain spills preventing spread and contamination of more soil or water.


Advantages

○ Sorbent products do what they are designed to do which is to hold the spill at the point of impact and keeping it contained to that area so that it does not spread and create more damage.

 

Disadvantages

○ Once the product is used for what it was designed to do, it must be picked up, hauled off, and disposed of in a hazardous landfill.

○ While the cost of the absorbents is relatively cheap, if disposed of properly along with soil that was impacted, it can be costly to the owner.

○ If not disposed of, the impacted area will still be black and contain hazardous material.

○ If covered up with new dirt, overtime the absorbent will be squeezed and hydrocarbons will leach from the absorbent. After many cover ups you will have a 
bigger problem than what you started out with and it will cost you more money in the long run.

HydroClean

HydroClean is a mixture of new products that bind to the hydrocarbons through what is called London Dispersion. The polymerization process that takes place when Daystar Pro comes in contact with the hydrocarbon producing a glass bead around the hydrocarbon that can only be broken down in a lab setting with a lot of heat and acid together.


Advantages

 

Saves the owners a substantial amount of money on all their spills.

○ Absorbs the hydrocarbons preventing further contamination.

○ Produces a glass bead around the hydrocarbon, rendering it harmless to the environment.

○ Once impacted soil has been treated with Daystar Pro and has gone through the drying process (usually 24 hrs) it produces a white residue, turning the once black hydrocarbon into a non hazardous silica sand that keeps the appearance of regular dirt. It literally turns the soil from black to the regular looking color of the dirt, making it as though nothing happened.

○ Because of the change in color and being able to render the impacted soil harmless, nothing can be seen, therefore nothing can be reported.

○ Negates the costly need to dig and haul soil that is not contaminated anymore.

 


Disadvantages


○ It works slower when it is colder weather because the temperature slows down the drying process. The hotter it is, the better it works.

○ Because the process of breaking down the soil and applying the product usually takes an average of 1-3 days to dry and to be replace in the hole, it is not always the first choice for first responder situations. Oil spills occurring inside buildings on concrete, this may be used as a first responder type circumstances. works.

 

 

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