EN Rx Reagent Stabilized and Activated HP

Powerfully Efficient Simply Effective

EN Rx Reagent activated by Synergist has remarkable qualities outcompeting most of the current market products.

  • Stabilized and used at low concentrations for safe injection
  • Cost efficient in price per mole
  • Potent capable of oxidizing the most difficult constituents
  • Easy to mix solution
  • Longevity to counteract adsorption
  • Low viscosity and less volatile to ease injection

It is one of a kind in the market and its unique qualities are preferred by our many clients.

I have been very impressed with the EN Rx reagent. Compared to other chemical oxidants; it is relatively safe to handle, does not introduce secondary contaminants, has the consistency/density of water, is effective for up to 90 days, and can be applied through multiple methods/platforms. This provides the necessary delivery/contact requirements for in-situ remediation.
Jim Clarke,
PG, (Wood Environmental)

What is EN Rx Reagent and How is it a Different ISCO Strategy?

For 20 years we have been doing things different. Our reagent has long been the longest lasting most potent product on the market, and this allowed us to treat the sites differently. To explain all of the benefits we would need to bore you with a book of details, so let’s just summarize it for you to show you how it’s superior.

  • Activated by Synergist-D. This amazing activator boosts the activation energy while simultaneously stabilizing the hydrogen peroxide. This still produces hydroxyl radicals for reduction of the most recalcitrant compounds out there.
  • Electrons from Hydrogen Peroxide. The Reagent uses Hydrogen Peroxide for electrons, a common commodity offering the best-in-class cost. More electrons per $. See the next section to see how this cost effectiveness clearly outperforms sodium persulfate.
  • Together Synergist and HP provide a controlled reduction (reactions over days and weeks).
    • This means no dangerous heat generation (controlled exotherm).
    • This minimizes vapor locks and provides easy injection.
    • This allows for desorption and back diffusion.
  • Uses water as transport. Unlike others, we use low concentrations and do not add suspended solids. This allows safe and easy activation in a single mix injectate. No chasing, buffering, or other tricks out there. It’s just easy. Ample water is added for great natural ROI. Nothing is forced.

Why change a great thing? For consistent injection, control and power, using EN Rx Reagent is too good to bother changing, for 20 years now.

The Unique Ability for EN Rx Reagent to be Both Activated and Stabilized at the Same Time

The stability is the most unique feature. How does it simultaneously activate and stabilize? Well, that’s the secret. But check out this graph that shows both features: 1,4 Dioxane is oxidized slowly over 90 days, showing the potential to oxidize a difficult compound, but 90 days of reactivity showing the stability.

An In-Depth Examination of the Chemistry and Economics

You made it this far and believe it’s easy to use and very safe, but does it work? Let’s look at the comparative efficacy and cost. (Spoiler Alert, EN Rx Reagent is less expensive!)

To do this we must first look at the stoichiometry of the reactions and evaluate the required dosages for equivalent impact on the contaminants of concern. In this case we will use benzene (C6H6) as a common representative contaminant. Therefore:

For Sodium Persulfate: Need 15 Moles of oxidant to destroy 1 Mole of benzene.
15 Na2S2O8 + 1 C6H6🡪 6 CO2 + 3 H2O + 30 Na + 30 SO4: Note undesirable mineral residues.
For EN Rx Reagent: Need 15 Moles of oxidant to destroy 1 Mole of benzene.
15 H2O2 + 1 C6H6🡪 6 CO2 + 18 H2O: Note no mineral residues.

Table 1 takes all the key factors into account including the weight of various activator chemicals, which is a critical feature. This is due to the fact that our activator is only needed at 2.5% by weight to hydrogen peroxide versus multiples of that for other activators. In that regard, we then use a low estimate of activator for persulfate at 10%. Multiplying the stoichiometric coefficient by the adjusted total weight we get the actual mass of oxidant and activator needed to oxidize a Mole of contaminant. From this we can derive an Efficiency Ratio among the three options as follows.

Table 1

Molar Weight
Activator Weight Factor
Adjusted Total Weight
Na Persulfate
1.1 X
15 to 1
EN Rx Reagent
1.025 X
15 to 1

Table 2

Ratio of Need to EN Rx Reagent
Approx. Cost Difference
Na Persulfate
EN Rx Reagent
Because pricing is a function of many factors, these are ballpark relationships, but they certainly create a sense of what the savings can be. What the Table represents is that for every dollar spent on EN Rx Reagent, $2.52 would have to be spent on Na persulfate. Over and above this feature is the fact that there are significant operational costs that favor the use of EN Rx Reagent

In summary, if we were to compare the total mass delivered to the site EN Rx Reagent would be as effective as 7.51 X sodium persulfate on a weight basis. This has huge implications not only in direct cost, but also for shipping and application times. Further, with a highly stabilized hydrogen peroxide, other benefits include reduced infrastructure requirements and safety factors given the relative behavior of each oxidant.

Back on the economics. The rough bulk price for EN Rx Reagent is $4.77 per lb. For persulfate, which as noted is variable, we will use $1.60 a pound, including the cost of an iron salt activator. The cost differences is 2.98 X. Taking this ratio and factoring the efficiency calculation we can see the true comparative values of these products.
If we convert the efficiency ratios to cost differences, we can see the following in Table 2.

The choice is as clear as the Reagent (see photo), it is cost effective, strong, yet safe.

Powerfully Efficient Simply Effective