It is one of a kind in the market and its unique qualities are preferred by our many clients.
As noted, all the oxidants of relevance, with the exception of ozone that has a more complex infrastructure requirement, need to be catalyzed. We have established that EN Rx Reagent is a superior oxidizer, by the nature of the hydrogen peroxide component which is very powerful, universal in its application, versus say sodium permanganate that is only effective on certain double bonds, e.g., chlorinated ethenes. Also, a significant benefit is that the activator is “clean” resulting in no impurities left behind, which in some cases and interfere with secondary biological activity. To this set of qualifications, we then add the fact that we have the controlled exotherm and all of the value which that adds. With that said, let’s look at the comparative efficacy and cost.
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.
Oxidant | Molar Weight | Activator Weight Factor | Adjusted Total Weight | Stoichiometry | |
---|---|---|---|---|---|
Na Persulfate | 238 | g/mol | 1.1 X | 261.8 | 15 to 1 |
EN Rx Reagent | 34 | g/mol | 1.025 X | 34.85 | 15 to 1 |
Oxidant | Ratio of Need to EN Rx Reagent | Approx. Cost Difference |
---|---|---|
Na Persulfate | 7.51 | 2.98 |
EN Rx Reagent | 1.0 | 1.0 |
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.
3218 River Road, Tampa, FL 33598
Offices in Florida, Texas, California, and Colorado
info@enrxinc.com
1-877-747-ENRX (3679)
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