Nutrisulfateā¢
Enhanced aerobic bioremediation technologies such as the iSOCĀ® gas inFusion technology or the use of oxygen releasing compounds such as TersOxā¢ are commonly used to accelerate naturally occurring in situ bioremediation of petroleum hydrocarbons, and fuel oxygenates such as MTBE and TBA, by indigenous microorganisms in the subsurface. However, these indigenous microorganisms do not function well in the high contaminant concentrations of the source area. Moreover, the oxygen technologies have to overcome the anaerobic conditions of the source area and often the presence of iron.
What is Nutrisulfateā¢?
Sulfate reduction and methanogenesis is the dominate natural degradation processes at most sites; and therefore, adding oxygen to the anaerobic portion of the plume may be disadvantageous.
Nutrisulfateā¢ (U.S. Patent No. 7,138,060) stimulates biodegradation by providing a soluble, readily available electron acceptor solution. In the presence of elevated sulfate, anaerobic groundwater bacteria use BTEX, MTBE and other petroleum hydrocarbons for carbon and energy while mineralizing the hydrocarbons to carbon dioxide and water. Sulfate addition enhances natural conditions and reduces the carbon footprint when compared to conventional remediation.
Nutrisulfateā¢ is a high sulfate metabolic supplement designed to enhance the kinetics and efficiency of microbial systems specifically related to bioremediation of BTEX, MTBE, TBA and other petroleum hydrocarbons. The increase in kinetics and efficiency decreases the remediation time and reduces the amount of substrate / amendment required.
Sulfate Enhanced Bioremediation (SEB)
Petroluem Hydrocarbon + Nutrisulfateā¢ + Dissolved Iron ā Iron Sulfide + H2O + MgCO3 + CO2
Nutrisulfateā¢ increases activity, abundance, and fecundity of anaerobic heterotrophic bacteria.
Benefits of Nutrisulfateā¢
- Enhances abiotic bioremediation
- Increases bioremediation kinetics
- Decreases remediation time
- Reduces the amount of substrate required
- Remedy will be faster, better and cheaper
- Clean, low-cost, non-disruptive application (e.g., direct-push, wells and excavations)
- Green sustainable chemistry
Features
| Parameter | Nutrisulfateā¢ |
| Total Carbon* | 1.2% |
| Total Nitrogen (N)* | 0.09% |
| Carbon/Nitrogen ratio (C/N)* | 13.1 |
| Total Kjeldahl Nitrogen (TKN)* | 587 mg/kg |
| Chemical Oxygen Demand (COD)* | 29,575 mg/l |
| Total Phosphorus* | 218 ppm |
| Sulfate* | 127,250 mg/l |
| Other Constituents |
|
| Modified Culture Media | Oligosacharides; Peptides |
| Yeast Cells | Proteins; Amino Acids; Peptides; Vitamins; Minerals; Proteinates; Nucleic Acids; Beta-Glucans; Lysine; Leucine |
| Extracellular Metabolites | Peptides; Organic Acids; Oligosaccharides; Nucleotides; Amino Acids; Esters; Alcohols |
*Approximate Value
Cost-Savings
The Nutrisulfateā¢ technology has the potential to offer significant cost savings to the groundwater remediation industry. The passive nature of Nutrisulfateā¢ eliminates the large capital and operations/maintenance costs associated with active engineered systems. Nutrisulfateā¢ offers a faster and lower cost alternative to drawn out natural attenuation approach