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Optimizing Remedial Product Vendors’ Products with Common Sense Chemistry
For over 15 years Innovative Environmental Technologies, Inc. (IET) has looked toward optimization and maximization of commercially available remedial products using common sense chemistry.
Simple Optimization of Geochemistry: In general remedial products fall into four categories: Oxidation, Reduction, Bio-enhancement and Augmentation. Each of these segments can be easy optimized for significant cost savings and efficiencies.
Oxidation: Many oxidation processes are burdened with overcoming the half-life of the oxidation reaction. Frequently, the sorbed mass of the targeted compound will result in a “rebound” equal to or greater than the starting groundwater concentration of the compound of interest. In the worst case, IET has seen numerous sites in which an oxidative technology has simply oxidized the Natural Organic Demand (NOD) of a site resulting in significant increases in dissolved concentrations of targeted compounds. Vendors of oxidants, rather than offer chemistry compatible with the geochemistry, simply anticipate subsequent oxidation events. How often has an oxidation based solution required a half-dozen or more applications?
Reduction: The number of suppliers of “organic hydrogen donors” is ever increasing, these providers supply a wide range of fermentable products, ranging from vegetable oils, plant based products, esters etc. All of these products, if applied into an oxidizing environment, rely on aerobic bacterial to consume the oxygen while utilizing the fermentable product as a growth substrate. There are even suppliers who sell bacterial cultures which are purported to facilitate the degradation of chlorinated solvents in-situ which are actually just turning the environment anoxic due to their respiration. The use of an inexpensive oxygen scavenger such as sodium sulfite, rapidly converts the in-situ environment reducing without the associated costs of additional substrate while minimizing a “lag” phase seen with the application of these products in accordance with their manufacturer’
This press release is the first in a series in which the discussion of remedial process optimization will be discussed.
Innovative Environmental Technologies, Inc.
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