Looking for viable options for remediation of pesticide-contaminated water-logged soils.
Anaerobic soils are a complex matrix. Normally the accumulation of a specific compounds results in an equal increase in digestive organisms.
Our work in innoculative organisms has been thwarted by the complexity of the matrix, the pH and ionic solution values.
Time has been the best answer for anaerobic conditions and aeration the best fast method for breaking down complex hydrocarbons in an anaerobic condition.
However, in our experience: there is no "universal" organism that works in both aerobic & anaerobic conditions. None. Zero. The cellular pathways are so completely different in each environment and no organism has the ability to have both pathways. Or they would have long since dominated the earth!
When someone says they have this "universal" organism and offer "proof" of it working then the conditions of the testing equalize the environment to, normally, aerobic and that is where the success occurs.
Dig?
Dear Dr Richard Lasker
You have explained well professionally, this is not my field but may I ask, there are fungus those are equally surviving in anaerobic and an aerobic environment, what is your experience with such organisms
M.Farhanullah Kha: they favor one environment over another. They do not excel in both but can "cross-over" as is necessary for short-terms. Yeast, technically not a fungi, for example, can exist for short periods in aerobic but are technically anaerobic.
Pestalotiopsis microspora can exist under both conditions for periods of time but again function reproductively better in anaerobic conditions than aerobic. This is some excellent work identifying them: http://aem.asm.org/content/77/17/6076.full
Yes but it totally depends upon type of pesticide present in soil accordingly you can use microbial strain/assemblages
Perhaps that is true, however the limiting factor is anaerobic, not the type of pesticide I think.
Sebastian R. Sørensen: Normally carbon is the target element of degradation.
You are correct in stating that removing a carbon ring from a pesticide is not the same as "neutralizing the toxicity." We have in fact found that simple reactions heighten toxicity, pesticide residue in plant-food products, upon microwaving, create new cross-linked compounds far more toxic than the residue compounds. And are less likely to be detoxified in the normal pathways, liver for example.
Here I can suggest bioelectrochemical system (BES) for the treatment of the recalcitrant and toxic compounds. This is the novel system where the complex mechanisms works for the degradation of organic molecules. Microbial fuel cells (MFCs), one of the applications of BES that treats organic pollutants and simultaneusly generates bioelectricity. Many recalcitrant organic pollutants including, chemical wastewater, distillery wastewater, dye wastewater, pesticide wastewater, phenol related wastewaters were stuided for the suitability to use as substrates. A large array of articles can be find in literature.
As the MFCs were found to perform very good in sediments and water-logged soils, MFCs is best option to work for the pesticides degradation.
Even though, the energy/bioelectricity produced is less, when the major aim is pollutant degradation, MFCs perform good. The energy input for MFC operation is minimum.
Few articles that cited below can give youbasic information
https://www.researchgate.net/publication/271275482_Bioelectrochemical_Systems_%28BES%29_for_Microbial_Electroremediation_An_Advanced_Wastewater_Treatment_Technology?ev=prf_pub
https://www.researchgate.net/publication/240167811_Bio-catalyzed_electrochemical_treatment_of_real_field_dairy_wastewater_with_simultaneous_power_generation?ev=prf_pub
https://www.researchgate.net/publication/41012439_Bio-Electrochemical_Treatment_of_Distillery_Wastewater_in_Microbial_Fuel_Cell_Facilitating_Decolorization_and_Desalination_along_with_Power_Generation?ev=prf_pub
https://www.researchgate.net/publication/222826046_Phenol_degradation_in_microbial_fuel_cells._Chem_Eng_J
http://www.ncbi.nlm.nih.gov/pubmed/25864035
Chapter Bioelectrochemical Systems (BES) for Microbial Electroremedi...
Article Bio-catalyzed electrochemical treatment of real field dairy ...
Article Bio-Electrochemical Treatment of Distillery Wastewater in Mi...
Article Phenol degradation in microbial fuel cells
Here I can suggest bioelectrochemical system (BES) for the treatment of the recalcitrant and toxic compounds. This is the novel system where the complex mechanisms works for the degradation of organic molecules. Microbial fuel cells (MFCs), one of the applications of BES that treats organic pollutants and simultaneusly generates bioelectricity. Many recalcitrant organic pollutants including, chemical wastewater, distillery wastewater, dye wastewater, pesticide wastewater, phenol related wastewaters were stuided for the suitability to use as substrates. A large array of articles can be find in literature.
As the MFCs were found to perform very good in sediments and water-logged soils, MFCs is best option to work for the pesticides degradation.
Even though, the energy/bioelectricity produced is less, when the major aim is pollutant degradation, MFCs perform good. The energy input for MFC operation is minimum.
Few articles that cited below can give youbasic information
https://www.researchgate.net/publication/271275482_Bioelectrochemical_Systems_%28BES%29_for_Microbial_Electroremediation_An_Advanced_Wastewater_Treatment_Technology?ev=prf_pub
https://www.researchgate.net/publication/240167811_Bio-catalyzed_electrochemical_treatment_of_real_field_dairy_wastewater_with_simultaneous_power_generation?ev=prf_pub
https://www.researchgate.net/publication/41012439_Bio-Electrochemical_Treatment_of_Distillery_Wastewater_in_Microbial_Fuel_Cell_Facilitating_Decolorization_and_Desalination_along_with_Power_Generation?ev=prf_pub
https://www.researchgate.net/publication/222826046_Phenol_degradation_in_microbial_fuel_cells._Chem_Eng_J
http://www.ncbi.nlm.nih.gov/pubmed/25864035
Chapter Bioelectrochemical Systems (BES) for Microbial Electroremedi...
Article Bio-catalyzed electrochemical treatment of real field dairy ...
Article Bio-Electrochemical Treatment of Distillery Wastewater in Mi...
Article Phenol degradation in microbial fuel cells
Yes it is, but it also depends on the pesticide and its ability to be safely decomposed.
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