Posted on 10/14/2006 12:30:24 PM PDT by neverdem
| Naturally and Safely Treat Contaminated Soil and Water with Natural Enviro 8000 Bioremediation Natural Environmental Systems, LLC announces the addition of Natural Enviro 8000 Bioremediation, for use in the removal of petroleum hydrocarbons and chlorinated solvents from soil and water, to its existing line of all natural microbial products. (PRWEB) October 2, 2006 -- Natural Environmental Systems, LLC (www.naturalenviro.com)announces the addition of Natural Enviro 8000 Bioremediation, for use in the removal of petroleum hydrocarbons and chlorinated solvents from soil and water, to its existing line of all natural microbial products.
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I'm not a schill. I posted this thread. This sounds like a better idea than dredging.
Been there, done that, doesn't work.
I like the idea of bio remediation. Spray the oil slick owith bacteria, or introduce the bacteria in the contaminated sediment, let them chow down, recycle the bacteria in the food chain.
Since we know about the law of unintended consequences, I wonder about the types of by products these bacteria produce? I also wonder what happens when you spray them on blacktop. Do they digest the asphalt that holds the blacktop together?
Links please?
You don't appear to understand. According to the article mercury is a driver for the remediation. Bioremediation is targeted at organic contamination, not inorganic contaminants such as mercury. Furthermore, sediment is anaerobic, and petroleum hydrocarbon degradation such as that in the advertisement you've posted is an aerobic process. The two are incompatible.
Bioremediation does work, and quite effectively in some cases, but it is not a cure-all and it needs to be carefully tailored to the situation at hand.
Where did the article imply that? From the article linked in comment# 1:
"Much of the pollution was caused by Allied-Signal, a former chemical company that manufactured caustic soda, soda ash, chlorinated benzenes, and other products at a site near the lake from 1917 through 1986. The company's operations released mercury, solvents, calcium and other pollutants into nearby streams and soil as well as Onondaga Lake."
--snip--
"An investigation into the extent of the contamination was completed in 2002 and found mercury contamination throughout the 4.6-square mile lake, as well as elevated levels of benzene, toluene, PCBs and polychlorinated dioxins."
The thread of that link had comments mentioning the proposed dredging of the Hudson River for PCB remediation.
Bioremediation is targeted at organic contamination, not inorganic contaminants such as mercury. Furthermore, sediment is anaerobic, and petroleum hydrocarbon degradation such as that in the advertisement you've posted is an aerobic process. The two are incompatible.
The news release doesn't mention what type of bacteria is/are being used "in the removal of petroleum hydrocarbons and chlorinated solvents from soil and water."
If you want to reply with professional references, I would appreciate it.
"Links please?"
Bioremediation doesnt work acceptably on highly chlorinated or hydrophobic compounds or on compounds that do not serve as carbon or energy sources. The other problem is a phenomenon called biosorption, in which the compound is absorbed into the organic matrix and does not desorb rapidly enough to be degraded. Trust me, I know about this stuff. People have been working on this for decades and virtually all of them have given it up.
You better report Natural Environmental Systems, LLC to the Better Business Bureau, EPA and the Justice Dept.
"You better report Natural Environmental Systems, LLC to the Better Business Bureau, EPA and the Justice Dept."
For a while there were dozens of companies making the exact same claims as this outfit. They can degrade everything to CO2 and water with their special combination of wonder bugs. Trouble is it never works except for some easily degradable compounds that are water soluble. My advice is to give them a sample of your material and let them try it before giving them a dime. Have the samples independently analyzed before and after treatment to test efficacy.
My wife used to do research in soil contaminant removal, and in one case of "bioremediation", they were trying "bugs" that would eat chlorinated hydrocarbons. And the bugs were indeed eating the chlorinated hydrocarbons. The only problem is that they were also converting fully saturated chlorocarbons (like perchloroethane) into vinyl chloride---which is far MORE toxic than the original material.
Oh, it's not quite as bad as that. There are two possible solutions. Use a different species of bacteria that doesn't produce the vinyl chloride, but still eats the perchorinated stuff, or find a species that selectively eats vinyl chloride and add it to the "mix", so that the VC gets removed as it is formed.
Bioremediation is certainly possible, but since it is very much in its infancy, there is still a lot of science that has to be done to understand all the variables that need to be controlled to make it as safe and efficient as possible.
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