A：Oxygen release compound, commonly known as magnesium peroxide (MgO₂), raises the dissolved oxygen concentration of aquifers, thereby creating conditions which may stimulate indigenous, petrophilic microbes to aerobically degrade petroleum contamination to carbon dioxide and water. 

• Oxygen generation: Magnesium peroxide, when hydrated, releases oxygen per the following reaction: MgO₂+H₂O -> 1/2 O₂+ Mg(OH)₂

•  Application methods: Magnesium peroxide can be introduced to an aquifer by either the retrievable filter sock method or by direct-push injection as a slurry. In situations where there is an open excavation as a result of either an underground storage tank removal, or remediation via excavation, magnesium peroxide as a dry powder can be mixed with low level contaminated soil before backfilling. Typically, the amount of compound applied to the soil is at least about 100 grams per metric ton of soil and preferably from about one to ten kilograms of compound per metric ton of soil.

• Uses: Some noteworthy uses of magnesium peroxide in the remediation of petroleum are: 

（1）At sites where adequate nutrients for bioremediation already exist in an aquifer, and dissolved oxygen is all that is needed to accelerate the rate of contaminant biodegradation

（2）As an oxygen barrier for groundwater contamination plume control 

（3）As a polishing step to meet target rehabilitation contaminant levels when active site remediation, such as pump-and-treat or other physical methods, is no longer cost-effective

（4） As the oxygen supplier, in combination with other injected bioremediation products that directly introduce either nutrients and/or microbes into aquifers