61% fermentable blend containing lactate and other fermentable materials and water-soluble nutrients including B vitamins and yeast factors.
98% fermentable blend containing both quick-release ethyl lactate and slow-release long-chain oleaginous materials.
The proprietary nutrient blend of yeast metabolites including B-vitamins and other soluble nutrients.
100% natural product that is comprised of chitin (a natural polysaccharide), proteinaceousmaterial, and calcium carbonate.
98% fermentable electron donor for sites where sodium and metals are a concern.
A readily soluble food grade 60% sodium or potassium lactate solution.
WilkeyWhey™ can be stored for extended periods of time if kept dry.
It contains up to 95% fermentable material.
• Solid material that provides both a readily soluble carbon substrate as well as a slow-release carbon source.
• Perfect for open excavations, direct push applications, acid mine drainage and low alkalinity halogenated solvent sites.
PERFECT FOR EXCAVATIONS AND ACID MINE DRAINAGE
Our approach to substrate dosing is based on site conditions.
JRW Bioremediation L.L.C. provides substrates and nutrients for anaerobic bioremediation. The substrates provided include highly soluble materials such as WILCLEAR® sodium and potassium lactate, SoluLac® ethyl lactate, and Wilke Whey® whey powder and slowly soluble substrates including LactOil® soy microemulsion, and ChitoRem® chitin complex.
The Case For Chitin. Mark R. Harkness and Rachel Farnum (GE Global Research), Brent Weesner and Damian Foti (GE Power Systems), Wayne Wilke (Wilke Int’l), and Donovan Smith (JRW Bioremediation). Seventh Int’l In Situ and On-Site Bioremediation Symposium, Orlando, FL; 2003.
Assessment of Chitin and Fracture Propagation During Bio-Fracing™. Gordon H. Bures (Frac Rite), Kent S. Sorenson, Jr., and Jennifer P. Martin (North Wind), and Richard F. Reinke (Eco Scan). Fourth Int’l Conference on Remediation of Chlorinated and Recalcitrant Compounds. Monterey, CA 2004
Remediation of Mine-Impacted Water Using Crabshell Chitin as an Electron Donor and Alkalinity Source. Mary Ann Robinson-Lora and Rachel A. Brennan (Penn State university) Tenth Int’l In Situ and On-Site Bioremediation Symposium. Baltimore, MD; 2009
Enhanced Bioremediation Using ChitoRem™. Steven D. Buser, Mark J. Jordana, and Robert J. Lu (Golder Associates). Seventh Int’l Remediation of Chlorinated and Recalcitrant Compounds.
Monterey, CA; 2010
ChitoRem® is a complex of materials that includes calcium carbonate for buffering and organics to promote microbial growth. This unique combination of materials allows ChitoRem® to be used for the remediation of multiple types of environmental concerns including the destruction of organics in the dissolved phase to the removal of metals.
CHITOREM® has been used successfully at PCE sites with low pH aquifers.
At a field site with pH in the range of 4 -5.5, addition of CHITOREM® to the open excavation resulted in contaminant concentrations below MCLs in less than two years.
Enhanced reductive dechlorination is based on attaining and maintaining control of an aquifer for a period of time sufficient to degrade all constituents of concern and their daughter products. Attaining and maintaining control of an aquifer is highly dependent on the hydrogeology and geochemistry of the site along with the microbial populations present. Since the hydrogeology and geochemistry is different for every site, a blanket cost can not be given for any specific site. In general, enhanced reductive dechlorination will cost less than $10 per cubic yard of media treated on most non-DNAPL sites. This compares with about $60 per cubic yard for excavation (without disposal) and about $90 per cubic yard for chemical oxidation.
In some cases, MCLs can be attained with enhanced reductive dechlorination. Much more frequently, reductions in contaminant mass of one to two orders of magnitude are common.
Because freight is costed from a warehouse to a delivery point, freight costs are quoted separately. Unless otherwise stated, due to the volatility of the fuels market, freight costs are generally valid for 30 days. Consideration should be given to the receiving facility’s capacity to off load a truck. In situations where the product is delivered to a facility without the capacity to off-load a delivery vehicle, arrangements can be made (for an additional charge) for delivery on a vehicle with a lift gate and pallet jack.
Reinjection schedules should be based on the geochemistry of an aquifer and not on a calendar schedule. In many cases, multiple injections can be spaced further apart over time.
Since the main goal of adding a substrate to an aquifer is to attain and maintain anaerobic conditions for an extended period of time, because of the limited flows clay sites should be ideal for enhanced reductive dechlorination. In practice, clay sites with adequately spaced injection points usually show very rapid response to substrate addition.
Injection spacing should be sufficient to promote robust reductive dechlorination throughout the treatment zone for a time sufficient to attain complete reductive dechlorination. Injection spacing is dependent upon the dissolution rate of the substrate, the dosage, aquifer velocity, and competing electron acceptor and contaminant flux.